‹ Back to the paper
Select the correct alternative from the choices given: (i) The cell reaction is spontaneous or…
Select the correct alternative from the choices given:
(i) The cell reaction is spontaneous or feasible when emf of the cell is:
(1) negative
(2) positive
(3) zero
(4) either positive or negative
(ii) Which, among the following polymers, is a polyester:
(1) melamine
(2) bakelite
(3) terylene
(4) polythene
(iii) The correct order of increasing acidic strength of the oxoacids of chlorine is:
(1) $\text{HClO}_3 < \text{HClO}_4 < \text{HClO}_2 < \text{HCl}$
(2) $\text{HClO} < \text{HClO}_2 < \text{HClO}_3 < \text{HClO}_4$
(3) $\text{HClO}_2 < \text{HClO} < \text{HClO}_4 < \text{HClO}_3$
(4) $\text{HClO}_3 < \text{HClO}_4 < \text{HClO} < \text{HClO}_2$
(iv) A catalyst is a substance which:
(1) changes the equilibrium constant of the reaction.
(2) increases the equilibrium constant of the reaction.
(3) supplies energy to the reaction.
(4) shortens the time to reach equilibrium.
Answer
No answer yet.
From ISC 2019 Chemistry Paper 1, question 1(b).