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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
____________ of copper is done by electrolysis.
Choose an answer
Production
Refining
Both
Nil
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Question # 2
The forces of attraction present between the molecules of a substance are called ____________ forces.
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Intermolecular forces
Covalent
Ionic
Nil
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Question # 3
Half life of C-14 ________________ years.
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5800
5700
5600
5500
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Question # 4
How many time liquids are denser than gases?
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100 times
1000 times
10,000 times
100,000 times
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Question # 5
The no. of electrons in the valence shell of alkali metals is
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1
2
4
7
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Question # 6
Along the period which one of the following decrease:
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Atomic radius
ionization energy
electron affinity
electronegative
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Question # 7
4th & 5th consist of ________________ elements.
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8
18
32
infinite
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Question # 8
The atomic number of sodium is ............... .
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9
10
11
12
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Question # 9
biology bis classified as ___________ science.
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Engineering
Physical
Natural
Chemical
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Question # 10
_________ elements naturally occurring.
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92
118
93
117
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Question # 11
If the solute-solute forces are strong enough than those of solute- solvent force, The solute:
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dissolves readily
does not dissolve
dissolve slowly
dissolves and precipitates
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Question # 12
The % age of carbon in peat is :
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60%
70%
80%
90%
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Question # 13
The carbon contents in lignite is.
Choose an answer
80%
50%
60%
70%
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Question # 14
Which disease cause when humans use water of industrial effluents.
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Cancer
Asthma
Jaundice
cholera
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Question # 15
Froth flotation process is used to concentrate the ore on:
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Density basis
Concentration basis
Wetting basis
Magnetic basis
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Question # 16
A salt always
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Contain ions
Contains water of crystallization
Dissolves in water
Forms crystals which conduct electricity
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Question # 17
In an irreversible reaction dynamic equilibrium:
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Never establishes
Established before the completion of reaction
Establishes after the completion of reaction
Establishes readily
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Question # 18
99% of atmosphere consists of .
Choose an answer
N
2
and H
2
N
2
and O
2
N
2
and CO
2
O
2
and CO
2
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Question # 19
Higher concentration of CO causes.
Choose an answer
Fatique
Headache
Both of them
None of them
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Question # 20
50% dextrose contains approximate amount of energy.
Choose an answer
250 calories
16 Calories
170 calories
120 calories
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Question # 21
Clark's method is used to remove the hardness of water, in this method which is used.
Choose an answer
Ca(HCO
3
)
2
Na-Zeolite
Ca-Zeolite
Ca(OH)
2
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Question # 22
At dynamic equilibrium state:
Choose an answer
Rate of forward reaction≠Rate of reverse reaction
Rate of forward reaction > Rate of reverse reaction
Rate of forward reaction = Rate of reverse reaction
Rate of forward reaction < rate of reverse reaction
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Question # 23
Anode rays were discovered by
Choose an answer
J. Stoney
Rutherford
J.J. Thomson
Goldstein
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Question # 24
Solvent extraction method is a particularly useful technique for separation when the product to be separated is.
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Non volatile or thermally unstable
Volatile or thermally stable
Non volatile or thermally stable
Volatile or thermally unstable
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Question # 25
One mole of Carbon -12 has mass
Choose an answer
0.012 kg
1 kg
0.022 kg
12 kg
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Question # 26
NH3 shows a maximum boiling point among the hydrides of V-A group elements due to.
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Very small size of nitrogen
Lone pair of electron present on nitrogen
enhanced electronegative character of nitrogen
Pyramidal structure of NH3
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Question # 27
Exceptionally low acidic strength of HF is due to.
Choose an answer
Strong polar bond between H and F
Smaller size of fluorine
Strong hydrogen bonding
electronegativity of fluorine
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Question # 28
The molecules of a gas show more deviation from ideal behaviour at low temperature, because
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Attractive force dominate at low temperature
Kinetic energies are increased
Collisions become less frequent
Densities of the gases increase
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Question # 29
Which is not use of liquid crystals.
Choose an answer
Temperature sensor
Liquid crystal display
Skin thermography
Energy supply in electrical devices.
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Question # 30
Allotropy is the property of.
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Compound
Element
Atom
Mixtuer
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Question # 31
Azeotropic mixture can be separated into pure components by
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Distillation
Fractional distillation
Vacuum distillation
None
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Question # 32
Le-Chatelier Braun principle is sometimes known as
Choose an answer
Law of mass action
Law of mobile equilibrium
Law of active mass
All of these above
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Question # 33
An aqueous solution of ethanol is water has vaporu pressure.
Choose an answer
Equal to the of water
Equal to that of ethanol
More than that of H2O
Less than that of water
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Question # 34
The amount of free fatty acid in fats and oil is determined by
Choose an answer
Iodine number
Acid number
Saponification number
Gold number
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Question # 35
During nitration of benzene, the active nitrating agent is
Choose an answer
NO
3
NO
2
+
NO
2
-
HNO
3
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Question # 36
Which halogen occurs naturally in a positive oxidation state.
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Fluorine
Chlorine
Bromine
Iodine
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Question # 37
Which one of the following products is not formed when acetic acid reacts with PCl5
Choose an answer
C2H5Cl
HCl
POCl3
CH3COCl
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Question # 38
Cholesterol is a
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Glyceride
Wax
Steroid
Fat
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Question # 39
Saturated hydrocarbon are also called.
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Olefins
Acetylenes
Paraffins
Alicyclic
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Question # 40
In Down's cell anode is made up of.
Choose an answer
Iron
Copper
Graphite
Platinum
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Question # 41
Boric acid cannot be used
Choose an answer
As antiseptic in medicine
For washing eyes
In soda bottles
For Enamals and Glazes
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Question # 42
The crystals of caustic soda, NaOH, are hygroscopic when these crystals are exposed to air.
Choose an answer
Gain water and remains solid
Gain water and becomes liquid
Lose mass and remain solid
Remain unchanged on heating.
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Question # 43
Which one of the following sets has coinage metaals is it.
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Cu, Hg, Au
Cu, Ag, Au
Ag, Au, Hg
Cu, Fe, Au
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Question # 44
Which compound is least reactive
Choose an answer
CH3-CH3
CH2=CH2
CH=CH
C6H6
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