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Online Tests
Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Which of the following govern the diffusion of gases
Choose an answer
Dalton's law
Avogadro's law
Graham's law
Newton's law
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Question # 2
An excellent source of energy without causing pollution is
Choose an answer
Fossil fuel
Sun
Petroleum
Nuclear reactor
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Question # 3
Which of the following carbohydrates is used in silvering of mirrors
Choose an answer
Sucrose
Cellulose
Fructose
Glucose
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Question # 4
Photochemical smog consists of higher concentration of:
Choose an answer
Oxidants
Ozone
a & b
NO
3
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Question # 5
Which property is associated with ionic solids?
Choose an answer
Solubility in polar solvents
Low melting points
Good conductivity in solid state
High vapour pressure
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Question # 6
Ozone is usually produced in the
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South polar region
North pole region
Tropical region
Thermosphere zone
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Question # 7
The highest temperature at which a substance can exist as a liquid is called its:
Choose an answer
Critical temperature
Zero temperature
Absolute temperature
None of above
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Question # 8
The simplest separating unit of a polymer is called:
Choose an answer
Monomer
Dimer
Trimer
Macromer
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Question # 9
Under which condition CO has the maximum molar volume.
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high T and P
Low T and High p
high T and low pressure
Low T and low P
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Question # 10
choose the best example of diffusion of gases:
Choose an answer
vapour condensing on moist surface
spreading of small from a scent bottle
hot air rising above a candle
bubbling in soda bottle
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Question # 11
Graham s law refers to
Choose an answer
Boiling point of gases
Gas compression problems
Gaseous diffusion
Volume changes of gases due to change in temperature
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Question # 12
How does the ionization energy of 1st group elements vary?
Choose an answer
Increases down the group
Decreases down the group
Remains unchanged
Variation is not regular
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Question # 13
A compound contains one atom of oxygen and % of O 34.78, then molecular mass of compound is
Choose an answer
46
78
110
180
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Question # 14
Which is not a component of environment
Choose an answer
Biosphere
Lithospahre
Hydrosphere
None of these
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Question # 15
A solutiion of 0.5 mole camphor in 100 grmas chloroform (K
b
= 0.322) has rise in boiling point than that of chloroform by
Choose an answer
0.81°C
1.61°C
1.81°C
0.61°C
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Question # 16
Which of the following is lighter
Choose an answer
Li
k
Na
Ca
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Question # 17
Macromolecules or polymers are large molecules built up from small molecules called monomers. This hypothesis put forward by
Choose an answer
Schrodixger
Standinger
Lewis
Newton
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Question # 18
Chloroform is carcinogenic:
Choose an answer
Heart
Lungs
Liver
Kidney
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Question # 19
The chemical reactivity of glass is reduced by the use of
Choose an answer
Fluxes
Formers
Stabilizers
None of these
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Question # 20
Which of the following is not a synthetic polymer?
Choose an answer
Polyethylene
PVC
Nylon
Cellophane
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Question # 21
The difference between amount of heat actually released and that of calculated is called
Choose an answer
Bonding energy
Activation energy
Resonance energy
Transition energy
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Question # 22
Which of the following compounds gives red precipitate with AgNO
3
?
Choose an answer
Kl
K
2
CrO
4
NaBr
NaNO
3
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