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Cbse Class 7 Science Questions & Answers

Welcome to GKSchools, your trusted educational portal for competitive exam preparation. This page is dedicated to Cbse Class 7 Science, a crucial segment under the CBSE Study Notes syllabus. Understanding Cbse Class 7 Science is essential for students and aspirants aiming to secure high ranks in competitive examinations. In this detailed study guide, we break down the core principles, solve practice questions, and share expert preparation strategies to help you gain mastery over this topic. Why is this topic important? Questions on Cbse Class 7 Science are frequently asked in major exams like SSC CGL, UP Police Constable, Railway (RRB) NTPC, Bank PO, and State PSC Exams. Examiners test your logical understanding, speed, and accuracy in this segment. Scoring well here requires a combination of conceptual clarity and regular mock test practice. On this page, you will find curated study materials, solved examples, and interactive quizzes designed by our editorial board to meet the latest 2026 exam standards. To get the maximum benefit from this guide, we recommend starting with the fundamental concepts, followed by attempting the quiz questions at the bottom of the page. Do not forget to bookmark this resource and check back regularly as we update our daily current affairs and subject notes to reflect the latest notification and syllabus updates. Start your learning journey today and elevate your exam preparation to the next level!

Practice high-quality solved questions, preparation strategies, and mock papers designed for competitive exams.

📅 Last Updated: July 15, 2026 ⏱ 5 mins read 👤 GKSchools Editorial Board

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Welcome to GKSchools, your trusted educational portal for competitive exam preparation. This page is dedicated to Class GK Questions, a crucial segment under the School Curriculum and NCERT Solutions syllabus. Understanding Class GK Questions is essential for students and aspirants aiming to secure high ranks in competitive examinations. In this detailed study guide, we break down the core principles, solve practice questions, and share expert preparation strategies to help you gain mastery over this topic. Why is this topic important? Questions on Class GK Questions are frequently asked in major exams like SSC CGL, UP Police Constable, Railway (RRB) NTPC, Bank PO, and State PSC Exams. Examiners test your logical understanding, speed, and accuracy in this segment. Scoring well here requires a combination of conceptual clarity and regular mock test practice. On this page, you will find curated study materials, solved examples, and interactive quizzes designed by our editorial board to meet the latest 2026 exam standards. To get the maximum benefit from this guide, we recommend starting with the fundamental concepts, followed by attempting the quiz questions at the bottom of the page. Don't forget to bookmark this resource and check back regularly as we update our daily current affairs and subject notes to reflect the latest notification and syllabus updates. Start your learning journey today and elevate your exam preparation to the next level!

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🔬 CBSE Class 7 Science – Important Questions & Answers

1. Photosynthesis क्या है?

Plants खाना कैसे बनाते हैं?

Answer: Photosynthesis वह प्रक्रिया है जिसमें पौधे सूर्य के प्रकाश, CO₂ और पानी का उपयोग करके भोजन (glucose) बनाते हैं।

2. Why is water called a universal solvent?

पानी को Universal Solvent क्यों कहते हैं?

Answer: क्योंकि पानी में ज्यादातर पदार्थ आसानी से घुल जाते हैं, इसलिए इसे Universal Solvent कहते हैं।

3. Acid rain क्या है?

Acid rain कैसे बनती है और क्यों हानिकारक है?

Answer: Acid rain तब बनती है जब हवा में SO₂ और NO₂ गैसें पानी के साथ मिलकर अम्ल बना देती हैं। यह फसलों, इमारतों और पर्यावरण को नुकसान पहुँचाती है।

4. Respiration और Breathing में क्या अंतर है?

दोनों में कोई दो अंतर लिखिए।

Answer:
  • Breathing: हवा अंदर-बाहर लेना।
  • Respiration: कोशिकाओं में food का energy में बदलना।

5. Ozone layer क्यों महत्वपूर्ण है?

Ozone layer की एक महत्वपूर्ण भूमिका लिखिए।

Answer: Ozone layer सूर्य की हानिकारक UV किरणों को रोकती है और पृथ्वी पर जीवन की रक्षा करती है।

6. Fibres के दो प्रकार बताएं।

Natural और Synthetic fibres के उदाहरण लिखिए।

Answer:
  • Natural: Cotton, Wool, Silk
  • Synthetic: Nylon, Polyester, Rayon

7. Soil erosion क्या है?

यह कैसे होता है?

Answer: हवा और पानी द्वारा मिट्टी का बह जाना Soil erosion कहलाता है।

8. Digestive system का मुख्य काम क्या है?

एक लाइन में लिखिए।

Answer: Digestive system भोजन को छोटे-छोटे पोषक तत्वों में बदलकर शरीर को energy देता है।

9. Nutrition के दो प्रकार कौन-से हैं?

Autotrophic और Heterotrophic का अर्थ लिखिए।

Answer:
  • Autotrophic: अपना भोजन स्वयं बनाते हैं (Plants)
  • Heterotrophic: दूसरों पर निर्भर रहते हैं (Animals)

10. Light के दो मुख्य प्रकार कौन से हैं?

Natural और Artificial light का उदाहरण लिखिए।

Answer:
  • Natural: सूरज
  • Artificial: Bulb, Tube light

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📖 Guide & Exam Strategy: Cbse Class 7 Science

Welcome to GKSchools comprehensive educational portal. This page is dedicated to Cbse Class 7 Science, a crucial segment under the CBSE Study Notes syllabus. Understanding Cbse Class 7 Science is essential for students and aspirants aiming to secure high ranks in competitive examinations. In this detailed study guide, we break down the core principles, solve practice questions, and share expert preparation strategies to help you gain mastery over this topic.

Why is this topic important? Questions on Cbse Class 7 Science are frequently asked in major exams like SSC CGL, UP Police Constable, Railway (RRB) NTPC, Bank PO, and State PSC Exams. Examiners test your logical understanding, speed, and accuracy in this segment. Scoring well here requires a combination of strong foundational concepts and regular practice. By studying the questions and solutions listed below, you can identify typical patterns and avoid common mistakes during the actual exam.

💡 Preparation Tips & Methods

Here are some valuable preparation tips for Cbse Class 7 Science:

🚀 Benefits of Regular Practice

Key benefits of practicing this topic on GKSchools:

In conclusion, mastering Cbse Class 7 Science is a step-by-step journey that requires dedication. Use this study notes dashboard as your revision hub. Share this resource with your fellow aspirants, and bookmark the page for quick access before your exams. Let's begin the practice test below!

❓ Frequently Asked Questions (FAQs)

What is the best way to study Cbse Class 7 Science for competitive exams?

The best way is to learn the basic concepts, review step-by-step solved questions on GKSchools, and then attempt daily mock tests to build speed.

How many questions from Cbse Class 7 Science can we expect in the exam?

Typically, you can expect 3 to 5 questions from this topic in the Reasoning or Quantitative Aptitude section, depending on the specific exam.

Are the practice questions on GKSchools free?

Yes, all Q&A sets, study notes, and mock tests on GKSchools are 100% free for all students.

Does Cbse Class 7 Science require memorizing complex formulas?

Most questions test your logical reasoning and analytical abilities rather than complex formulas. However, practicing diverse patterns helps you recognize solutions faster.

Can I download these study materials in PDF format?

Yes, you can use the 'Print' button on our page to save the complete solved questions list as a clean, printer-friendly PDF file.

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