cbse class 12 mcq

Important Questions Class 12 Chemistry Chapter 7 The p-Block Elements 1 Mark Questions

by

1. Write the elements of group 15? Ans. The elements of group 15 are Nitrogen (N), Phosphorous (P) , Arsenic (As) , Antimony (Sb) and Bismuth (Bi). 2.  Write chemical name & formulae of a) Chile saltpetre b) Indian saltpetre Ans. (a) Chile saltpetre – Sodium nitrate –  (b) Indian saltpetre – Potasium nitrate –  3.  … Read more

Important Questions Class 12 Chemistry Chapter 4 Chemical Kinetics 1 Mark Questions

by

1. Is rate of reaction always constant? Ans. No. rate of a reaction is not always constant. It depends on many factors such as concentration, temperature etc. 2. Can order of reaction be zero? Give example. Ans. Yes, decomposition of ammonia on a hot platinum surface is a zero order of reaction at high pressure. 3. What … Read more

Join Telegram Channel

Editable Study Materials for Your Institute - CBSE, ICSE, State Boards (Maharashtra & Karnataka), JEE, NEET, FOUNDATION, OLYMPIADS, PPTs

Download Now!