• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

In which of the following processes entropy increases

A.  A liquid evaporates to vapour.

B. Temperature of a crystalline solid lowered from 130 K to 0 K.

C. 2NaHCO3(s)→Na2CO3(s)+CO2(g)+H2O(g)

D. Cl2(g)→2Cl(g)

Choose the correct answer from the options given below:                 [2024]
1 A and C  
2 A, B and D  
3 A, C and D  
4 C and D  

Ans.

(3)

A.  Molecules in gaseous phase have greater freedom of movement, i.e.,have greater randomness than those in liquid phase, hence entropy increases.

B.  On decreasing temperature of a solid, entropy decreases.

C.  As number of gaseous products increases, randomness increases.

D.  The products have larger number of gaseous particles, hence entropy increases.