(Paper) Chemistry Objective Type Questions with Answers for the preparation of Engineering Entrance Test : AIEEE, IIT-JEE, CET
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Chemistry Objective Type Questions with Answers for the preparation of
Engineering Entrance Test : AIEEE, IIT-JEE, CET
(Important For 10+1 & 10+2 Science Students)
Test 6
(1) Based on lattice energy and other
considerations which one of the following alkali metal chlorides is expected to
have the highest melting point.
(a) LiCl
(b) NaCl
(c) KCl
(d) RbCl
Answer (b) NaCl
(2) Heating mixture of Cu2O and Cu2S will give
(a) Cu + SO2
(b) Cu + SO3
(c) CuO + CuS
(d) Cu2SO3
Answer (a) Cu + SO2
(3) The molecular shapes of SF4, CF4 and XeF4
are
(a) the same with 2,0 and 1 lone pairs
of electrons on the central atom, respectively
(b) the same with 1, 1 and 1 lone pair
of electrons on the central atoms, respectively
(c) different with 0, 1 and 2 lone pair
of electrons on the central atoms, respectively
(d) different with 1, 0 and 2 lone pairs
of electron on the central atoms respectively
Answer (d) different with 1, 0 and 2
lone pairs of electron on the central atoms respectively
(4) The number and type of bonds between two
carbon atoms in calcium carbide are
(a) One sigma, one pi
(b) One sigma, two pi
(c) Two sigma, one pi
(d) Two sigma, two pi
Answer (b) One sigma, two pi
(5) The oxidation state of chromium in the
final product formed by the reaction between KI and acidified potassium
dichromate solution is
(a) +4
(b) +6
(c) +2
(d) +3
Answer (d) +3
(6) The number of hydrogen atom(s) attached to phosphorus atom in
hypophosphorous acid is
(a) zero
(b) two
(c) one
(d) three
Answer (b) two
(7) The lanthanide contraction is responsible
for the fact that
(a) Zr and Y have about the same radius
(b) Zr and Nb have similar oxidation
state
(c) Zr and Hf have about the same radius
(d) Zr and Zn have the same oxidation
Answer (c) Zr and Hf have about the same
radius
(8) The IUPAC name of the coordination compound
K3[Fe(CN)6] is
(a) Potassium hexacyanoferrate (II)
(b) Potassium hexacyanoferrate (III)
(c) Potassium hexacyanoiron (II)
(d) tripotassium hexcyanoiron (II)
Answer (b) Potassium hexacyanoferrate
(III)
(9) 2 methylbutane on reacting with bromine in
the presence of sunlight gives mainly
(a) 1 – bromo -2 - methylbutane
(b) 2 – bromo -2 - methylbutane
(c) 2 – bromo -3 - methylbutane
(d) 1 – bromo -3 – methylbutane
Answer (b) 2 – bromo -2 - methylbutane
(10) The best reagent to convert pent -3-
en-2-ol into pent -3-en-2-one is
(a) Acidic permanganate
(b) Acidic dichromate
(c) Chromic anhydride in glacial acetic
acid
(d) Pyridinium chloro – chromate
Answer (c) Chromic anhydride in glacial
acetic acid