1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In which case change in entropy is negative?
A
Sublimation of solid to gas
B
2H(g) $$ \to $$ H2(g)
C
Evaporation of water
D
Expansion of a gas at temperature
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is [Given that 1 L bar = 100 J]
A
25 J
B
30 J
C
-30 J
D
5 kJ
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is :
A
0.125 × 10–15
B
0.5 × 10–10
C
0.5 × 10–15
D
0.25 × 10–10
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Which will make basic buffer?
A
100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OH
B
100 mL of 0.1 M HCl + 100 mL of 0.1 M NHOH
C
50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOH
D
100 mL of 0.1 M CH3COOH + 100 mL of 0.1 M NaOH
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12