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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
The molar volume of CO
2
is maximum at:
Choose an answer
S.T.P. (0
∘
C and 1 atm)
127
∘
C and 1 atm
0
∘
C and 2 atm
273
∘
C 2atm
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Question # 2
Which of the following molecules has angel of 120°
Choose an answer
BeCl2
BF3
CH4
NH3
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Question # 3
Chloroethene, CH
2
= CHC/ is the monomer of PVC.
What are the C-C-C bond angles along the polymeric chain in PVC?
Choose an answer
They are all 109.5°
half are 109.5° and half are 120°
They are all 120°
They are all 180°
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Question # 4
The origin ofacidic nature of alkyne is?
Choose an answer
small size of C
Small size of H
polarity of triple bond
sp hybridization
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Question # 5
Amount of heat absorbed when one mole of a solid melts into liquid form at its melting point is called:
Choose an answer
heat of vaporization
latent heat of fusion
molar heat of fusion
molar heat of sublimation
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Question # 6
Molar volume of CO
2
is maximum at
Choose an answer
NTP
0°C and 2.0 atm
127°C and 1 atm
273°C and 2.0 atm
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Question # 7
Ozone in stratosphere extends upto km:
Choose an answer
0-15 km
10-15 km
15-40 km
15-25 km
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Question # 8
During the manufacturing process of cement the temperature of the decomposition zone goes up to
Choose an answer
600
°C
800
°C
1000
°C
1200
°C
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Question # 9
Acetone and Chloroform are soluble in each other due to
Choose an answer
intermolecular hydrogen bonding
ion-dipole interaction
instantaneous dipoles
dipole-induced dipole interaction
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Question # 10
NH
3
can form only one hydrogen bond per molecule though it has three partially positively charged hydrogens
Choose an answer
nitrogen in NH
3
has only one ions pair of electrons which can make one H-bond
ammonia is a base
ammonia is a weak acid
it ionizes to give one H
+
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Question # 11
Surfactants are organic compounds used in detergents which reduce the:
Choose an answer
viscosity of water
surface tension of water
boiling points of water
surface ability of water
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Question # 12
96500 C of electricity liberates from CuSO
4
solution
Choose an answer
63.5 g of Cu
31.75 g of Cu
96500 g of Cu
100 g of Cu
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Question # 13
The galvanic or voltaic cells which are rechargeable called as
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Primary cells
Secondary cells
Dry cells
Infinite cells
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Question # 14
Although hydrogen resemble with the elements of group lA, IVA and Vll but it is usually placed in
Choose an answer
Group IA
Group IV A
Group VII
Group VIII
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Question # 15
Acetamide is
Choose an answer
Highly acidic
Highly basic
Neutral
amphoteric
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Question # 16
The general formula of amino acids is
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Question # 17
Which of the following solutions 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 same boiling points.
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Question # 18
Polythene is a polymer of
Choose an answer
Ethane
Ethene
Acetone
Propylene
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Question # 19
The monomeric units of starch is/are
Choose an answer
Glucose
Fructose
Glucose and fructose
Mannose
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Question # 20
Which of the following is a biodegradable polymer?
Choose an answer
Cellulose
Polyethene
Polyvinyl chloride
Nylon-6
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Question # 21
Which of the following was discovered first:
Choose an answer
Charge to mass ratio of electrons.
Mass of electrons.
Charge of electrons.
All of above at same time.
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Question # 22
The chemical formula of Trona is
Choose an answer
KCl . MgCl
2
. 6H
2
O
Na
2
CO
3
. 2NaHCO
3
. 2H
2
O
Na
2
CO
3
. H
2
O
KCl
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