Which oxide of nitrogen is not a common pollutant
introduced into the atmosphere both due to natural
and human activity ?
(1) ``\ce N2O5``
(2) ``NO_2``
(3) ``N_2O``
(4) NO

For the redox reaction
``\ce MnO4^-
+ C2O4^{2-}+ H^+
\longrightarrow Mn^{2+} +CO2 + H2O``
the correct coefficients of the reactants for the
balanced equation are
``MnO_4^{-}`` ``C_2O_4^{2-}`` `` H^+``
(1) 16 5 2
(2) 2 5 16
(3) 2 16 5
(4) 5 16 2

Which one of the following conditions will favour
maximum formation of the product in the reaction,
``A_2(g) + B_2(g) \leftrightarrows X_2(g) \triangle_r``H = -X kJ ?
(1) Low temperature and high pressure
(2) Low temperature and low pressure
(3) High temperature and high pressure
(4) High temperature and low pressure

The correction factor 'a' to the ideal gas equation
corresponds to
(1) density of the gas molecules
(2) volume of the gas molecules
(3) electric field present between the gas molecules
(4) forces of attraction between the gas molecules

When initial concentration of the reactant is doubled,
the half-life period of a zero order reaction
(1) is halved (2) is doubled
(3) is tripled (4) remains unchanged

The bond dissociation energies of ``X_2, Y_2 and XY``
are in the ratio of 1 : 0.5 : 1.
``\triangle``H for the formation
of XY is -200 kJ ``mol^{-1}``. The bond dissociation
energy of ``X_2`` will be
(1) 200 kJ ``mol^{-1}``
(2) 100 kJ ``mol^{-1}``
(3) 800 kJ ``mol^{-1}``
(4) 400 kJ ``mol^{-1}``

Identify the major products P, Q and R in the
following sequence of reaction :

(1)
(2)
(3)
(4)

Which of the following compounds can form a
zwitterion ?
(1) Aniline
(2) Acetanilide
(3) Benzoic acid
(4) Glycine

The type of isomerism shown by the complex
[``CoCl_2(en)_2``] is
(1) Geometrical isomerism
(2) Coordination isomerism
(3) Ionization isomerism
(4) Linkage isomerism

Which one of the following ions exhibits d-d
transition and paramagnetism as well ?
(1) ``CrO^{2-}_4``
(2) ``Cr_2O^{2-}_7``
(3) ``MnO_4^{-}``
(4) ``MnO_4^{2-}``

The geometry and magnetic behaviour of the
complex [``Ni(CO)_4``] are
(1) square planar geometry and diamagnetic
(2) tetrahedral geometry and diamagnetic
(3) square planar geometry and paramagnetic
(4) tetrahedral geometry and paramagnetic

Iron carbonyl, ``Fe(CO)_5`` is
(1) tetranuclear
(2) mononuclear
(3) trinuclear
(4) dinuclear

Match the metal ions given in Column I with the spin
magnetic moments of the ions given in Column II
and assign the correct code :
Column I Column II
a.`` Co^{3+}`` i. ``\sqrt8`` B.M.
b. ``Cr^{3+}`` ii. ``\sqrt35`` B.M.
c. ``Fe^{3+}`` iii. ``\sqrt3`` B.M.
d. ``Ni^{2+}`` iv. ``\sqrt24`` B.M.
v. ``\sqrt24`` B.M.
a b c d
(1) iv v ii i
(2) i ii iii iv
(3) iv i ii iii
(4) iii v i ii

Which of the following is correct with respect to
-I effect of the substituents ? (R = alkyl)
(1)``\ce - NH2 < - OR < - F``
(2) ``\ce -NR2 < - OR < - F``
(3) ``\ce - NH2 > - OR > - F``
(4) ``\ce - NR2 > - OR > - F``

Which of the following carbocations is expected to
be most stable ?
(1)
(2)
(3)
(4)