Thursday, May 16, 2013

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)

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