HOTS Questions for Class 9 Science. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
Answers opened: 0
Practice set
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Matter in Our Surroundings”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Matter in Our Surroundings. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Matter has mass and occupies space”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: Matter has mass and occupies space. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Solid, liquid, gas differ in particle arrangement”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: Solid, liquid, gas differ in particle arrangement. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Latent heat”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: Latent heat. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Evaporation causes cooling”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: Evaporation causes cooling. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “SI unit of temperature is kelvin; 0°C = 273 K”, what mistake could they make while solving a question from Matter in Our Surroundings?
Answer
They would use the wrong term or the reverse relation. Remember: SI unit of temperature is kelvin; 0°C = 273 K. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Matter in Our Surroundings · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Is Matter Around Us Pure?”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Is Matter Around Us Pure?. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “A pure substance has uniform composition”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: A pure substance has uniform composition. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Mixtures are homogeneous or heterogeneous”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: Mixtures are homogeneous or heterogeneous. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Solution = solute + solvent”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: Solution = solute + solvent. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Concentration as mass by mass percent”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: Concentration as mass by mass percent. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Colloids show Tyndall effect”, what mistake could they make while solving a question from Is Matter Around Us Pure??
Answer
They would use the wrong term or the reverse relation. Remember: Colloids show Tyndall effect. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Is Matter Around Us Pure? · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Atoms and Molecules”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Atoms and Molecules. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Law of conservation of mass”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Law of conservation of mass. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Law of constant proportions”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Law of constant proportions. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Atom is the smallest unit of an element that takes part in a reaction as taught here”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Atom is the smallest unit of an element that takes part in a reaction as taught here. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Molecule of an element or compound”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Molecule of an element or compound. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Chemical formula uses symbols and valency”, what mistake could they make while solving a question from Atoms and Molecules?
Answer
They would use the wrong term or the reverse relation. Remember: Chemical formula uses symbols and valency. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Atoms and Molecules · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Structure of the Atom”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Structure of the Atom. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Electron is negative; proton positive; neutron neutral”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Electron is negative; proton positive; neutron neutral. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Atomic number Z = number of protons”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Atomic number Z = number of protons. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Mass number A = protons + neutrons”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Mass number A = protons + neutrons. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Bohr–Bury rules for shells as in NCERT”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Bohr–Bury rules for shells as in NCERT. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Valence electrons decide combining capacity”, what mistake could they make while solving a question from Structure of the Atom?
Answer
They would use the wrong term or the reverse relation. Remember: Valence electrons decide combining capacity. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Structure of the Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from The Fundamental Unit of Life”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from The Fundamental Unit of Life. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Cell is the basic unit of life”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Cell is the basic unit of life. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Plasma membrane is selectively permeable”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Plasma membrane is selectively permeable. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Nucleus holds genetic material”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Nucleus holds genetic material. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Plant cells have cell wall and usually chloroplasts”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Plant cells have cell wall and usually chloroplasts. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Prokaryotes lack a true nucleus”, what mistake could they make while solving a question from The Fundamental Unit of Life?
Answer
They would use the wrong term or the reverse relation. Remember: Prokaryotes lack a true nucleus. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: The Fundamental Unit of Life · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Tissues”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Tissues. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Meristematic tissue divides”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Meristematic tissue divides. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Xylem and phloem are complex permanent tissues”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Xylem and phloem are complex permanent tissues. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Epithelial, connective, muscular, nervous in animals”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Epithelial, connective, muscular, nervous in animals. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Blood is a connective tissue”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Blood is a connective tissue. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Function follows structure”, what mistake could they make while solving a question from Tissues?
Answer
They would use the wrong term or the reverse relation. Remember: Function follows structure. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Tissues · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Motion”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Motion. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Distance is scalar; displacement is vector”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Distance is scalar; displacement is vector. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Speed = distance/time”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Speed = distance/time. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Velocity = displacement/time”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Velocity = displacement/time. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Acceleration = change in velocity / time”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Acceleration = change in velocity / time. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Equations of motion for uniform acceleration as retained in your book”, what mistake could they make while solving a question from Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Equations of motion for uniform acceleration as retained in your book. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Force and Laws of Motion”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Force and Laws of Motion. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “First law: inertia”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: First law: inertia. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Second law: F = ma”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Second law: F = ma. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Third law: action–reaction”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Third law: action–reaction. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Momentum p = mv”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: Momentum p = mv. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “SI unit of force is newton”, what mistake could they make while solving a question from Force and Laws of Motion?
Answer
They would use the wrong term or the reverse relation. Remember: SI unit of force is newton. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 9 · Subject: Science · Chapter: Force and Laws of Motion · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-9/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “HOTS Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Today's 3-step path
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
