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Online Tests
Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Which of the following mineral does not contain AI?
Choose an answer
Cryolite
Mica
Feldspar
Fluorspar
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Question # 2
Mark the smallest atom
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F
CI
Br
I
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Question # 3
SO
2
and NO
2
pollution by increasing
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Alkalinity
Acidity
Neutrality
Buffer action
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Question # 4
The rate of a reaction that does not involve gases does not depend upon
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Pressure
Temperature
Concentration
Catalyst
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Question # 5
Tollen's reagent is
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Ammonical cuprous chloride
Ammonical cuprous oxide
Ammonical silver bromide
Ammonical silver nitrate
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Question # 6
Galena is an ore of
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Gallium
Lead
Tin
Germanium
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Question # 7
Setting of plaster of paris involves
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Oxidation with atmospheric oxygen
Combination with atmosphere CO
2
Dehydration
Hydration to yield another hydrate.
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Question # 8
Portland cement is manufactured by using
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Limestone,clay and sand
Limestone,gypsum and sand
Limestone,gypsum and alumina
Limestone,clay and gypsum
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Question # 9
The ratio of the ionization energy of H and Be
3+
is
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1 : 1
1 : 3
1 : 9
1 : 16
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Question # 10
Which of the following is not present in RNA?
Choose an answer
Uracil
Thymine
Ribose
Phosphate
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Question # 11
Sodium thiosulfate is used in photography because of its
Choose an answer
Oxidizing behaviour
Reducing behaviour
Complexing behaviour
Photochemical behaviour
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Question # 12
Galena is an ore of
Choose an answer
Gallium
Lead
Tin
Germanium
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Question # 13
Which of the following process is used to separate insoluble particles from liquids?
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Seperation
Filtration
Crystallization
Condensation
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Question # 14
Setting of Plaster of Paris involves
Choose an answer
Oxidation with atmospheric
Combination with atmospheric CO
2
Dehydration
Hydration to yield another hydrate
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Question # 15
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
Choose an answer
Mercury
Lead
Nitrogen oxide
Sulphur oxide
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Question # 16
The pore size of filter paper depends upon
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Nature of the medium
Temperature of the medium
Size of particles
Mass of the particles
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Question # 17
Which of the following cannot be produced by acidic dehydration of alcohols?
Choose an answer
Ethers
Aldehyde
Alkyl Hydrogen sulphate
Alkene
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Question # 18
An electrolyte
Choose an answer
Forms complex ions in solution
Gives ions only when electricity is passed
Possesses ions even in solid state
Gives ions only when dissolved in water
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Question # 19
The valence orbital configuration of an element with atomic number 23 is
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3d
5
3d
3
, 4s
2
3d
3
, 4s
1
, 4p
1
3d
2
, 4s
2
, 4p
1
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Question # 20
Which of the following is directly related to Qualitative analysis?
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Identification
Separation
Measurement
Calculation
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Question # 21
The weight of 11.2 litres of CO
2
at S.T.P. would be
Choose an answer
88 g
44 g
32 g
22 g
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Question # 22
Which one of the following elements occurs free in nature?
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N
P
As
Sb
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