NCERT Solutions for Class 12 Chemistry (Rasayan Vigyan) - Test 2
Download NCERT Solutions for Class 12 Chemistry (Rasayan Vigyan) updated for 2022-23. Our solutions cover key chapters like Surface Chemistry, Solid State, and other essential topics in chemistry. These study materials are designed to help students excel in their UP Board and CBSE exams.
Que 1: सोना धातु (Au) का ऑक्सीकरण संख्या होता है
[A] +1
[B] 0
[C] -1
[D] इनमें से सभी
Show Answer
Correct Answer :
[A] +1
Que 2: किसी संक्रमण तत्त्व X का +3 ऑक्सीकरण अवस्था में विन्यास 3d4 है तो X का परमाणु संख्या है
[A] 25
[B] 26
[C] 22
[D] 19
Show Answer
Correct Answer :
[A] 25
Que 3: निम्न में कौन उभयधर्मी ऑक्साइड है?
[A] Cr2O3
[B] Mn2O7
[C] V2O3
[D] CrO
Show Answer
Correct Answer :
[A] Cr2O3
Que 4: मरक्यूरस आयन का सूत्र है
[A] Hg+
[B] Hg2+
[C] Hg2+
[D] इनमें से कोई नहीं
Show Answer
Correct Answer :
[C] Hg2+
Que 5: उपधातु है –
[A] S
[B] Sb
[C] P
[D] B
Show Answer
Correct Answer :
[B] Sb
Que 6: निम्न में d-ब्लॉक तत्त्व है
[A] Gd
[B] Hs
[C] Es
[D] Cs
Show Answer
Correct Answer :
[B] Hs
Que 7: स्मेल्टींग में धातु के ऑक्साइड के अपचयन में संयुक्त है-
[A] A1
[B] C
[C] Mg
[D] CO
Show Answer
Correct Answer :
[B] C
Que 8: नाइट्रिक ऑक्साइड का वायु द्वारा ऑक्सीकरण करने पर प्राप्त लाल-भूरे गैस का सूत्र है
[A] N2O5
[B] N2O
[C] NO2
[D] N2O3
Show Answer
Correct Answer :
[C] NO2
Que 9: बिस्मथ की सबसे स्थाई ऑक्सीकरण अवस्था है-
[A] +3
[B] +5
[C] +3 और +5 दोनों
[D] कोई नहीं
Show Answer
Correct Answer :
[A] +3
Que 10: अमलगम का आवश्यक अवयव है
[A] Fe
[B] Pb
[C] Hg
[D] Cr
Show Answer
Correct Answer :
[C] Hg
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