Q19. Reaction occurring at cathode is HgO + H2O + 2e- → Hg (l) + 2 OH- Above reaction is found in: (a) Leclanche cell (b

Q37. A solution of CuSO4 is electrolysed for 10 minutes using a current of 1.5 amperes. (1 mol of Cu = 63 g). How much c

Q39. Out of given options choose a word that can be used as an adjective as well as an adverb.

Select the one which is different from the other three alternatives: 1. 7, 56, 2. 13, 78, 3. 9, 64, 4. 11, 132.

Profit earned by selling an article for Rs.1060 is 20% more than the loss incurred by selling the article for Rs.950. At

Iceland is an example of ___________

Match List-I with List-II List-I (Expressions): (A) Find x (B) Evaluate: , n = 6, r = 2 (C) If , find . (D) List-II (V

In an examination which had 200 questions, students score 4 marks for every correct answer and lose 1 mark for every wro