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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Which of the following alkali metal hydroxides is the strongest base?
Choose an answer
LiOH
NaOH
KOH
CsOH
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Question # 2
Causticisation process is used for the preparation of
Choose an answer
Caustic soda
Caustic potash
Baryata solution
Slaked lime
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Question # 3
Which of the following statements is most appropriate about effective nuclear charge? It depends upon
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The shielding constant
The atomic number
The charge on the nucleus
Both the nuclear charge and the shielding
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Question # 4
Which metal is protected by a layer of its own oxide?
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Al
Ag
Au
Fe
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Question # 5
Which one of the following elements occurs free in nature?
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N
P
As
Sb
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Question # 6
Inert pair effect plays an important role in case of
Choose an answer
F
Al
Si
Tl
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Question # 7
On heating acetaldehyde with ammonical silver nitrate solution, we get
Choose an answer
CH
3
OH
Silver acetate
HCHO
Silver mirror
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Question # 8
The carbon atoms in calcium carbide are held by
Choose an answer
Ionic bonds
Sigma bonds
2 covalent, one co-ordinate bond
2
π
and one
α bond
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Question # 9
Which of the following has least mass?
Choose an answer
2 gram atom of nitrogen
3 x 10
23
atoms of C
1 mole of S
7.0 g of Ag.
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Question # 10
Which of the following nitrogen fertilizer contain more nitrogen
Choose an answer
NaNO
3
KNO
3
NH
4
NO
3
Urea
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Question # 11
Which of the following does not reflect the periodicity of elements?
Choose an answer
Bonding begaviour
Electronegativity
Ionisation potential
Neutron/proton ratio
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Question # 12
Which has largest radius?
Choose an answer
CO
3+
Mn
3+
Fe
3+
Cr
3+
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Question # 13
The unit rate of a reaction can be increased in general by all the factors except by
Choose an answer
Using a catalyst
Increasing temperature
Increasing the activation energy
Increasing the conc. of reactants
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Question # 14
Which of the following imparts violet colouration to non-luiminous flame of Bunsen burner?
Choose an answer
NaCl
2
BaCl
2
CaCl
2
KCl
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Question # 15
The number of oxygen atoms in 4.4 g of CO
2
is approximately
Choose an answer
1.2 x 10
23
6 x 10
22
6 x 10
23
12 x 10
23
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Question # 16
Benezene is obtained by fractional distillation of
Choose an answer
Heavy oil
Anthracene oil
Middle oil
Light oil
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