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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
The molar mass of H
2
SO
4
is:
Choose an answer
98 g
98 amu
9.8 g
9.8 amu
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Question # 2
When temperature of water drops to ____________ °C it convert onto ice.
Choose an answer
0
-2
-1
1
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Question # 3
Industrial chemistry deals with the manufacturing of compounds:
Choose an answer
in the laboratory
on micro scale
on commercial scale
on economic scale
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Question # 4
________________ in linear in shape.
Choose an answer
CO+
CO2
H2O
NH3
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Question # 5
Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is:
Choose an answer
Cu
AgNO3
Cu(NO3)2
Ag
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Question # 6
The core of the earth is ____________ than crust.
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LIghter
Heavier
Both
Nil
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Question # 7
Gases produced in Nelson's cell are:
Choose an answer
H
2
and O
2
H
2
and CI
2
H
2
and N
2
CI
2
and O
2
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Question # 8
positive ion hare formed by _________ of electrons.
Choose an answer
Gain
Loss
Sharing
Bonding
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Question # 9
Es is symbol of :
Choose an answer
Erbium
Einsteinium
Europium
Fremium
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Question # 10
_________ elements naturally occurring.
Choose an answer
92
118
93
117
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Question # 11
Protons carry _________ charge.
Choose an answer
+
_
No
Neutral
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Question # 12
The functional group- COOH is found in
Choose an answer
Carboxylic acid
aldehydes
alcohals
easter
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Question # 13
Which one of these is a saturated hydrocarbon?
Choose an answer
C
2
H
4
C
3
H
6
C
4
H
8
C
5
H
12
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Question # 14
A conjugate acid is a specie formed by accepting a.
Choose an answer
Proton
Electron pair
Neutron
Electron
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Question # 15
Main component of natural gas is
Choose an answer
Methane
Propane
Butane
Propene
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Question # 16
Formula of Potassium ferrocyanide.
Choose an answer
K
4
[Fe(CN)
6
]
-4
K
3
[Fe(CN)
4
]
-3
K
2
[Fe(CN)
6
]
-4
K
4
[Fe(CN)
5
]
-4
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Question # 17
Which one is the formula of chloromethane.
Choose an answer
CH
2
Cl
2
CCl
4
CH
Cl
3
CH
3
Cl
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Question # 18
Which acid is found in Ant sting?
Choose an answer
Citric Acid
Formic Acid
Uric Acid
Sulphuric acid
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Question # 19
Urea is nitrogenous fertilizer. It consist of nitrogen.
Choose an answer
26.6 %
36.6%
46.6%
56.6%
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Question # 20
Marsh gas is mostly :
Choose an answer
ethane
methane
butane
propane
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Question # 21
Cause of Night blindness is.
Choose an answer
Deficiency of vitamin B
Deficiency of vitamin A
Deficiency of vitamin D
Deficiency of vitamin E
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Question # 22
Red hair contains compound of.
Choose an answer
Iron
copper
titanium
Molybdenum
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Question # 23
______ Molecule has zero dipole moment.
Choose an answer
CO
H2S
SO2
CH4
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Question # 24
Rutherford's model of atom failed because.
Choose an answer
The atom did not have a nucleus and electron
It did not account for the attraction between protons and neutrons.
It did not account for stability of the atom
There is actually no space between the nucleus and the electrons.
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Question # 25
The molecules of a gas show more deviation from ideal behaviour at low temperature, because
Choose an answer
Attractive force dominate at low temperature
Kinetic energies are increased
Collisions become less frequent
Densities of the gases increase
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Question # 26
Azeotropic mixture can be separated into pure components by
Choose an answer
Distillation
Fractional distillation
Vacuum distillation
None
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Question # 27
With increases of 10 oC temperature the rate of reaction doubles. This increase in rate of reactions is due to.
Choose an answer
Decrease in activation energy of reaction
Decrease in the number of collisions between reactant molecules
Increase in activation energy of reactants
Increase in number of effective collisions
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Question # 28
Percentage ionic character of HF is.
Choose an answer
100%
80%
43%
57%
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Question # 29
During the electrolysis of molten NaCI, the ion which is reduce is
Choose an answer
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Question # 30
If a strips of Cu metal is placed in a solution of FeSO4
Choose an answer
Cu will be precipitated down
Fe is precipitated out
Cu and Fe both dissolve
No reaction takes palce
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Question # 31
If the salt bridge is not used between two half cells, then the voltage
Choose an answer
Decreases rapidly
Decreases slowly
Does not change
Drops to zero
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Question # 32
Azeotropic mixture
Choose an answer
Obey Raoult's law
Do not obey Raoult's law
Boils at low temperature only
Boils at high temperature only
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Question # 33
Which statement is correct about solubility product constant.
Choose an answer
It is applicable at highly soluble substances.
Value of Kap is independent of temperature
It is used for homogeneous aquarium system
It can be used to predict that precipitation will take place or not by combining two ions
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Question # 34
Phenol after reduction with hydrogen changes to
Choose an answer
Picric acid
Benzene
Cyclohexane
Cyclohexanol
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Question # 35
During pulp making, the pH of digester is maintained at.
Choose an answer
1-2
3-5
6-8
7-9
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Question # 36
Structure of benzene is
Choose an answer
Tetrahedral
Trigonal planar
Hexagonal planar
Linear
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Question # 37
Which one of the following gases is prepared by heating a mixture of sodium acetate and sodium hydrozide.
Choose an answer
CH4
CH2-CH3
CO2
CO
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Question # 38
Setting process of cement is based upon
Choose an answer
Hydrolysis
Hydration
Dehydration
Botha a and b
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Question # 39
Which hydroxide decomposes on heating.
Choose an answer
LiOH
NaOH
KOH
CaOH
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Question # 40
Which one of the following alkanes will be formed by the hydrolysis of ethyl magnesium bromide
Choose an answer
Methane
Ethane
Butane
do not hydrolysed
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Question # 41
Chile saltpeter has the chemical formula
Choose an answer
NaNO3
KNO3
Na2B4O7
Na2CO3.H2O
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Question # 42
The chemical formula of Sodium Bromite is.
Choose an answer
NaBrO
NaBrO2
NaBrO3
NaBrO4
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Question # 43
Ammonium nitrate fertilizers is not used for which crop
Choose an answer
Cotton
Wheat
Sugar cane
Paddy rice
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Question # 44
Which of the following will have the highest boiling point.
Choose an answer
Methanal
Ethanal
Propanal
2-Hexanone
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