A gas deviates from ideal behaviour at a high pressure because its molecules

114.    A gas deviates from ideal behaviour at a high pressure because its molecules

(A) attract one another

(B) show the Tyndall effect

(C) have kinetic energy

(D) are bound by covalent bonds

Answer:: (A)

115.    A gaseous mixture was prepared by taking equal mole of CO and N2. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is

(A) 1 atm

(B) 0.5 atm

(C) 0.8 atm

(D) 0.9 atm

Answer:: (B)

116.    A ligand can also be regarded as

(A) Lewis acid

(B) Bronsted base

(C) Lewis base

(D) Bronsted acid

Answer:: (C)

117.    A metal present in insulin is

(A) copper

(B) iron

(C) zinc

(D) aluminium

Answer:: (C)

118.   A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is ______.

(A) 30.6

(B) 75

(C) 69.4

(D) 25

Answer:: (B)

119.    Which of the following compound would not evolve CO2 when treated with NaHCO3 solution?

(A) salicylic acid

(B) phenol

(C) benzoic acid

(D) 4-nitro benzoic acid

Answer:: (B)