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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
A molecule that has polar bonds but is overall non - polar
Choose an answer
IF
CCl4
PCI3
All
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Question # 2
Which of the folowing compound is expected to be colored
Choose an answer
Na2SO4
ZnCl2
MgF
2
CuF
2
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Question # 3
SO
2
makes ___________ acid rains
Choose an answer
carbonic acid
Sulfuric
Nitric acid
All of these
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Question # 4
Which one of the following is a water soluble vitamin?
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niacin
riboflavin
tyrosine
ascorbic acid
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Question # 5
Equal volumes of ideal gases contain equal number of molecules at:
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Same temperature
Same pressure
Same environmental conditions
Both (A) and (B)
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Question # 6
Ozone is an allotropic form of:
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Carbon
Phosphorus
Oxygen
Sulfur
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Question # 7
Two substances that have the same crystal structure are said to be
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isomorphous
anisotropic
isotropic
polymorphous
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Question # 8
The nature of the attractive force in acetone and chloroform are
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dipole-induced dipole forces
dipole-dipole forces
ion-dipole forces
instantaneous forces
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Question # 9
NaNO
3
and CaCO
3
crystals are Rhombohedral isomrophism is due to
Choose an answer
both soluble in water
their cations belong to S block element
same shape of NO
3
-1
and CO
3
-2
ions which is triangular planar
same number of O atoms
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Question # 10
Which of the following substance is not present in acid rain?
Choose an answer
Sulphuric acid
Nitric acid
Sulphurous acid
Acetic acid
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Question # 11
The reason of acid rains is
Choose an answer
Release of CO in excess by in complete combustion
Excess release of NO
2
and SO
2
from buring of fossil fules
Formation of excess CO
2
due to combustion and respiration
Formation of NH
3
in excess from industry and coal gas
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Question # 12
The Electro-negatively difference for ionic bond must be greater than
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1.6
1.7
1.8
1.0
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Question # 13
The amount of heat evolved or absorbed in a chemical reaction indicated by balanced chemical equation at 25° and one atmospheric pressure is called
Choose an answer
Enthalpy of formation
Enthalpy of neutralization
Enthaply of combustion
Enthaply of reaction
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Question # 14
The pressure of vapours when sent to the ionization chamber in mass spectrometer is
Choose an answer
10
-5
to 10
-6
torr
10
-6
to 10
-7
torr
10
-7
to 10
-8
torr
10
-3
to 10
-4
torr
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Question # 15
The boiling point of glycerol is more than propanal because of
Choose an answer
Hybridisation
H-bonding
Resonance
All these factors
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Question # 16
Choose an answer
Elimination Esterification
Elimination Isomerisation
Oxidation Exterification
Oxidation Oxidation
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Question # 17
Carboxyl compounds have functional group:
Choose an answer
R-C-X
R-CH=O
RCOR
All
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Question # 18
Which of the following solution has the highest boiling point
Choose an answer
5.85% solution of sodium chloride
18.0% solution of glucose
6.0% solution of urea
All have the same boiling point
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Question # 19
50 mL of 10 N H
2
SO
4
. 25mL of 12 N Hcl and 40 mL of 5N HNO
3
are mixed and the volume of the mixture is made 100 mL by adding water. The normality of resulting will be
Choose an answer
1 N
2 N
3 N
9 N
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Question # 20
In the manufacture of NH
3
by Haber's process catalyst used is iron its catalytic efficiency is poisoned by
Choose an answer
Presence of Al
2
O
3
Presence of Cr
2
O
3
MnO
2
CO present with H
2
gas
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Question # 21
Compared to a 1.0M aqueous solution of calcium chloride will have
Choose an answer
The same freezing and boiling point
A lower freezing point and lower boiling point
A lower freezing point and higher boiling point
A higher freezing point and higher boiling point
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Question # 22
The product of the reaction between propanone and HCN is hydrolysed under acidic conditions. What is the formula of the final product
Choose an answer
CH
3
CH(OH)COOH
CH
3
CH
2
CH(OH)COOH
(CH
3
)
2
C(OH)COOH
CH
3
CH
2
CH
2
COOH
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