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Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
The principle constituent of pyrex glass is
Choose an answer
Zn
B
Pb
CI
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Question # 2
Atmosphere of big/metropolitan cities is polluted most by
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Automobile exhausts
Pesticide residue
Household waste
Radio-active fall out
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Question # 3
Cheif air pollutant which is likely to deplete ozone layer
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Sulphure dioxide
Carbon dioxide
Carbon dioxide
Nitrogen oxides and chloro fluorocarbons
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Question # 4
In crystal structure of sodium chloride the arrangement of CI
-
ions is
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Fee
Both fee and bcc
Bee
None of these
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Question # 5
A cell constant is generally found by measuring the conductivity of aqueous solution of
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BaCI
2
KCI
NaCI
MgCI
2
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Question # 6
Which one of the halogen acid is a liquid?
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HF
HCI
HBr
HI
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Question # 7
Benzene + Ozone → Y. in this sequence Y is
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Benzene monoozonide
Benzene diozonide
Benzene triozonide
Succinic acid
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Question # 8
In N.W.F.P the phosphate fertilizer are produced at
Choose an answer
D.I.Khan
Haripur
Nowshera
Dargai
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Question # 9
For the carbylamine reaction we need hot alc.KOH and
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Any amin and chloroform
Chloroform and Ag powder
A primary amine and chloroform
A mono alkyl amine and trichlorom-ethane
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Question # 10
The number of atoms in 0.0004 g of magnesium is close to
Choose an answer
24
2 x 10
20
10
20
6.02 x 10
23
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Question # 11
The most reactive compound for electrophilic nitration will be
Choose an answer
Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 12
Acid rains are produced by
Choose an answer
Excess NO
2
and SO
2
from burning fossil fuels
Excess production of NH
3
by industry and coal gas
Excess release of carbon monoxide by incomplete combustion
Excess formation of CO
2
by combustion and animal respiration
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Question # 13
A current of 9.65 ampere flowing ofr 10 minutes deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is
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10
50
30
96.5
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Question # 14
1-Chloropropane has two isomers. It is an example of
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Chain isomerism
Position isomerism
Function group isomerism
Meramerism
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Question # 15
The number of atoms in 0.004 g of magnesium is close to
Choose an answer
24
2 x 10
20
10
20
6.02 x 10
23
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Question # 16
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh
4
or LiAH
4
?
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1-Propanol
2-Propanol
2-Methyl2-Proponal
Ethanol.
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Question # 17
A zero order reaction is one whose rate is independent of
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Temperature of the reaction
The concentration of the reactants
The concentration of the products
The material of the vessel in which the reaction is carried out
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Question # 18
Gooch Crucible used to filter the solution of
Choose an answer
H
2
SO
4
HCI
KMnO
4
Both B & C
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Question # 19
The rate of a reaction that does not involves gases, does not depend upon
Choose an answer
Pressure
Temperature
Concentration
Catalyst
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Question # 20
What quantity of limestone (CaCO
3
) on heating will give 56 kg of CaO?
Choose an answer
1000 kg
56 kg
44 kg
100 kg
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Question # 21
Which of the following elements is most electronegative?
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Oxygen
Chlorine
Nitrogen
Fuorine
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Question # 22
What happens when CCl
4
is treated with AgNO
3
solution?
Choose an answer
NO
2
will be evolved
A white ppt. of AgCl will form
CCl
4
will dissolve in AgNO
3
solution
Nothing will happen
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