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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Detergents are surfactants and they reduce the
Choose an answer
B.P. of water
Surface tension of water
Wetting ability of water
None of these
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Question # 2
which of the following is a typical transition metal?
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Sc
Y
Ra
Co
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Question # 3
Nylon 6, 6 is a condensation polymer of
Choose an answer
Phthalic acid and hexa ethylene diamine
Adipic acid and hexaethylene diamine
Phthalic acid and glycerol
Adipic acid and glycerol
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Question # 4
The alkaline hydrolysis of bromoethane shown below gives alcohol as the product: H3C-CH2-Br-------H3C-CH2-OH
The reagent and the condition used in this reaction may be:
Choose an answer
H20 at room temperature
KOH in alcohol
Ethanol. heat
Dilute NaOH(aq) warm
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Question # 5
If the four tubes of a car are filled to the same pressure with N
2
, O
2
, H
2
and helium separately,then which one will be filled first.
Choose an answer
N
2
O
2
H
2
He
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Question # 6
Cooling happens under the Joule Thomson Effect due to sudden:
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Contraction.
Absorption.
Expansion.
All of above.
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Question # 7
Which of the statement is applicable for both ideal and real gases molecules?
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Have no forces of attraction
Collisions between the molecules is elastic
Molecules are in random movement
The actual volume of gas is negligible as compared to the volume of gas
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Question # 8
In a period the atomic radii
Choose an answer
increase
decrease
remain same
first increase, then decreased
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Question # 9
When two ice cubes are pressed together they unite to form one cube. which of the following forces is responsible for holding them together?
Choose an answer
H-bonding
Covalent bonding
van der waal's forces
dipole-dipole interaction
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Question # 10
The density of methane at 2.0 atmosphere pressure at 27°C is
Choose an answer
0.13 gL
-1
0.26 gL
-1
1.30 gL
-1
26.0 gL
-1
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Question # 11
The enthalpies of all elements in their standard states are
Choose an answer
Unity
always +ve
always -ve
zero
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Question # 12
Soil remediation means
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To make it suitable for cultivation of crops
To make it acidic
To make it alkeline
To add manure into it
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Question # 13
Which of the following statement about electron affinity of two elements is correct
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Carbon has greater than oxygen
Sulphur has less than oxygen
Iodine has greater than bromine
Bromine has less than chlorine
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Question # 14
Which of the following is halo form
Choose an answer
CHBr
3
CHCI
3
CHI
3
All of these
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Question # 15
Neutron was discovered by:
Choose an answer
Chadwick.
Bohr.
Rutherford.
Plank.
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Question # 16
The formula of lime stone is
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CaCl
2
MgCO
3
Na
2
CO
3
CaCO
3
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Question # 17
Nitroalkane are used in
Choose an answer
Fuel
Solvents
Organic synthesis
All of them
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Question # 18
Compounds having same molecular formula but different structures are said to be
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Monomers
Isomers
Metamers
Tautomers
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Question # 19
Coal heated in the absence of air of about 500 - 1000
°C is converted to
Choose an answer
Coke
Coal gas
Coal tar
All above
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Question # 20
The reaction between fat and NaOH is called:
Choose an answer
Esterification
Hydrogenolysis
Fermentation
Sponification
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Question # 21
The charge over mass ratio of electron is:
Choose an answer
1.6 x 10
-1
C Kg
-1
9.1 x 10
-31
C Kg
-1
1.7588 x 10
11
C Kg
-1
6.62 x 10
-34
C Kg
-1
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Question # 22
The amount of oxygen in the lithosphere is about
Choose an answer
35.50%
40.60%
56.60%
50.50%
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