Chemistry MCQS

361. What is the boiling point of argon in Celsius?
a) -269°C
b) -196°C
c) -162°C
d) -112°C

362. What is the boiling point of krypton in Celsius?
a) -269°C
b) -196°C
c) -162°C
d) -112°C

363. Entropy of the universe is?
(A) Decreasing
(B) Constant
C) Always increasing
(D) None of the above

364. Heterogeneous catalysis is based on?
(A) Absorption
B) Adsorption
(C) Sorption
(D) Desorption

365. Least soluble in water among the following is?
(A) Benzoic acid
B) Benzene
(C) Ethanol
(D) Phenol

366. Who gave the cyclic structure of benzene?
(A) Doberiener
(B) Amedo
C) Kekule
(D) None of the above

367. Temperature of the system decreases in?
(A) Adiabatic convergence
B) Adiabatic expansion
(C) Adiabatic compression
(D) None of the above

368. Isothermal system is one in which?
A) ΔT=0
(B) ΔE=W
(C) V=0
(D) E=0

369. Which equation is not affected by a change in pressure?
(A) 1/2N2 + 1/2O2 → NO
B) P2O5 → P2O + O2
(C) N2 + 3H2 → 2NH3
(D) None of the above

370. The gas which shows deviation from ideal behaviour is known as?
(A) Hydrogen
B) Ammonia
(C) Helium
(D) Trichloro Methane