One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then, kinetic energy of O2 < kinetic energy of SO2.

265.    One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then,

(A) kinetic energy of O2 > kinetic energy of SO2 .

(B) kinetic energy of O2 < kinetic energy of SO2.

(C) kinetic energy of both are equal.

(D) None of these

Answer:: (B)

266.    One mole of which of the following has the highest entropy?

(A) liquid nitrogen

(B) hydrogen gas

(C) mercury

(D) diamond

Answer:: (B)

267.    Paracetamol is a/ an

(A) antimalarial

(B) antipyretic

(C) analgesic

(D) both 2 and 3

Answer:: (D)

268.    Peroxide ion ______.

a) is diamagnetic.

b) has five completely filled antibonding molecular orbitals.

c) is isoelectronic with neon.

d) has bond order one.

Which one of these is correct?

(A) a), b) and d)

(B) d) and c)

(C) a) and d)

(D) a), b) and c)

Answer:: (C)

269.    pH value of which one of the following is not equal to one?

(A) 0.05 M H2SO4

(B) 0.1 M HNO3

(C) 50cm3 of 0.4 M HCI +50 cm3 of 0.2M NaOH

(D) 0.1 M CH3 COOH

Answer:: (D)

270.    Phenol  forms a tribromo derivative "X" is ______.

(A) bromine in water

(B) bromine in benzene

(C) bromine in carbon tetrachloride at 0°C.

(D) potassium bromide solution

Answer:: (A)