By how much would the electrode potential of Couple change if the H ion concentration is decreased 1 — NEET Chemistry Past Papers Chemistry Question

Question

By how much would the electrode potential of Couple change if the H ion concentration is decreased 100 times at 25°C. (A) increases by 189 mV (B) decreases by 189 mV (C) increases by 19 mV (D) decreases by 19 mV MnO− 4|Mn2+ + + MnO− 4|Mn2+ Which of the following compound has peroxide linkage ? (1) CrO (2) H S O (3) N O (4) (1) and (2) both 5 2 2 8 2 5 (1) CrO (2) H S O (3) N O 5 2 2 8 2 5 Assertion (A) : For exothermic reaction, on increasing temperature only rate of backward reaction increases. Reason (R) : On increasing temperature, exothermic reaction shifts in backward direction. (1) Both (A) and (R) are correct but (R) is not correct explanation of (A) (2) (A) is correct but (R) is not correct (3) (A) is not correct but (R) is correct (4) Both (A) and (R) are correct and (R) is correct explanation of (A) Lassaigne test shown by set of elements :- (1) N, S, P (2) N, S, H (3) N, S, C (4) C, H, N (1) N, S, P (2) N, S, H (3) N, S, C (4) C, H, N Statement-I : On the treatment with aq. NaOH, Benzyl chloride gives Benzyl alcohol. Statement-II : Aqueous medium promotes formation of carbocation. (1) Statement-I & Statement-II, Both are correct. (2) Statement-I & Statement-II, Both are false. (3) Statement-I is false & Statement-II is true. (4) Statement-I is true & Statement-II is false. 1001OMD303029230151 PHASE - MOCK TEST-1