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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
When light is exposed to transtion element, then electrons jump from lower orbitals to higher orbitals in
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Orbitals of s-subshell
Orbitals of d-subshell
Orbitals of p-subshell
between different shells
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Question # 2
Real gases deviate at low temperature from ideal behaviour due to
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there is transitional motion of molecule
the collissions between the molecules are decreased
volume of gas is decreased
the inter molecular attractive forces become significant
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Question # 3
The suspended particles in the raw water can be removed by the
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Coagulation
Aeration
Hydration
Dehydration
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Question # 4
How many kinds of space lattices are possible in a crystal?
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23
7
230
14
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Question # 5
The crystal of K
2
SO
4
and K
2
CrO
4
are orthorhombic. These are isomrophs due to
Choose an answer
same physical properties
their cations identical
number of O atms is equal
same shape of SO
4
-2
and CrO
4
-2
tetrahedral
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Question # 6
The pH range of the acid rain is
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7 - 6.5
6.5 - 6
6 - 5.6
Less than 5
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Question # 7
Structure of CrO4(-2) is'
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triclinic
cubic
octahedral
tetrahedral
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Question # 8
Large molecule formed by combination of smaller units these smaller units are called:
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Polymers
Macromolecule
Micromolecule
a & b
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Question # 9
Steroids belong to the class
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Waxes
Glycosides
Phospholipids
Lipids
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Question # 10
The value of critical temperature of a gas depends upon its:
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Size
Intermolecular forces in it
Shape
All of above
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Question # 11
Which one of the following is an appropriate indication of positive iodoform test?
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Formation of H2O
Brick red precipitate
Release of H2 gas
Yellow precipitate
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Question # 12
If the radius of first Bohr orbit be a
o
, then the radius of third Bohr orbit would be
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3 x a
o
6 x a
o
9 x a
o
1/2 x a
o
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Question # 13
The classify the elements, Newland gave the idea of
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Octaves
Triads
Atomic volume
Atomic mass
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Question # 14
Isopropyl alcohol on oxidation gives
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Acetone
Ether
Ethylene
Acetaldehyde
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Question # 15
Homogenous catalysis is that in which catalyst and reactants are in same phase. Which one of the following reaction is a homogenous catalysis
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Question # 16
Which one of the following is not air pollutant gas
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CO
CO
2
NO
SO
2
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Question # 17
Which of the following is not a fatty acid
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Propanoic acid
Acetic acid
Phthalic acid
Butanoic acid
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Question # 18
Isotonic solutions have same
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Molar concentration
Molality
Normality
None of these
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Question # 19
The element which has a simple cubic lattice in solid state is
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Se
Te
Po
None of these
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Question # 20
Oceans cove ______ percent of the surface of the earth
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60
70
80
97
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Question # 21
The method involved for electrolysis of Na or K salts of carboxylic acids
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Sabatier's sendrens reaction
Kolbe's method
Clemmensen
Wolf kishner reduction
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Question # 22
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2-bromonitrobenzene
2-nitrobromobenzene
1-bromonitrobenzene
1-nitrobromobenzene
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