Question

Match the transformations in column I with appropriate options in column II
Column-I
(A) $CO_2(s) \rightarrow CO_2 (g)$
(B) $CaCO_3(s) \rightarrow CaO(s) +CO_2(g)$
(C) $2H^{ \ldotp } \rightarrow H_2 (g)$
(D) $P_{(white, solid)} \rightarrow P_{(red, solid)}$

Column-II
(p) phase transition
(q) allotropic change
(r) $\Delta H$ is positive
(s) $\Delta S$ is positive
(t) $\Delta S$ is negative

Answer 1

your answer is a-t,b-s,c-r,d-p