Multiple Choice QuestionsAssertion (A) : AlCl3 exists as a dimer through halogen bridged bonds.
Reason (R) : AlCl3 gets stability by accepting electrons from the bridged halogen.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true, but (H) is false.
(A) is false, but (R) is true.
The vapour pressure of pure benzene and toluene are 160 and 60 mmHg respectively. The mole fraction of benzene in vapour phase in contact with equimolar solution of benzene and toluene is
0.073
0.027
0.27
0.73
6 g of a non-volatile, non-electrolyte X dissolved in 100 gm of water freezes at -0.93°C. The molar mass of X in g mol-1 is (Kf of H2O = 1.86 K kg mol-1).
60
140
180
120
The products obtained at the cathode and anode respectively during the electrolysis of aqueous K2SO4 solution using platinum electrodes are
O2, H2
H2, O2
H2, SO2
K2, SO2
Which of the following statements is not correct inrespect of chemisorption?
Highly specific adsorption
Irreversible adsorption
Multilayered adsorption
High enthalpy of adsorption
Which of the following statements regarding sulphur is not correct?
At about 1000 K, it mainly consists of S, molecules.
The oxidation state of sulphur is never less than + 4 in its compounds.
S2 molecule is paramagnetic.
Rhombic sulphur is readily soluble in CS2.
Select the correct IUPAC name [Co(NH3)5(CO)3]Cl.
Penta ammonia carbonate cobalt (III) chloride
Pentammine carbonate cobalt chloride
Pentammine carbonato cobalt (III) chloride
Cobalt (III) pentammine carbonate chloride
Which of the following characteristics of the transition metals is associated with their catalytic activity?
Colour of hydrated ions
Diamagnetic behaviour
Paramagnetic behaviour
Variable oxidation states
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