cbsc chemistry pyq 2023 56 B Chemistry for Visually Impaired
1. For an electrolyte undergoing dissociation in an aqueous (a) is always less than one. (b) is always greater than one. (c) has zero value. (d) has negative value. 2. Which of the following cells has a constant voltage throughout its life ? (a) Dry cell (b) Electrolytic cell (c) Mercury cell (d) Daniell cell 3. How many Faradays are required to reduce one mole of Sn 4+ to Sn 2+ ? (a) 2.0 (b) 4.0 (c) 1.0 (d) 6.0 4. For the reaction A + 2B → 3C + D, d[C]/dt is equal to : (a) -d[A]/dt (b) -d[B]/ dt (c) + 3d[A]/ dt (d) -3/2 d[b]/dt 5. The unit of rate constant and rate of reaction are identical for a : (a) zero order reaction (b) first order reaction (c) second order reaction (d) third order reaction 6. Which of the following transition metals do not show variable oxidation states ? (a) Cu (b) Ti (c) Mn (d) Sc ...