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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
Which one of the following metals burns with a brick red flame?
Choose an answer
Sodium
Magnesium
Iron
Calcium
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Question # 2
The reverse of evaporation is:
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Boiling
Diffusion
Condensation
Freezing
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Question # 3
Gold can only be dissolved by:
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Acids
Bases
Aqua Regia
Nil
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Question # 4
At ____________ °C water converts to ice.
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101°
100°
99°C
100.2°C
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Question # 5
Scientist used ___________ method.
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Scientific
Non-scientific
Bot
Non
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Question # 6
________________ proposed that matter is composed of small particles.
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Greek
English's
Russian
Nil
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Question # 7
The no. of Ion pair/pairs in ammonia molecule is / are
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1
2
3
4
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Question # 8
The atomic number is represented by ____________
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A
Y
X
Z
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Question # 9
The no.of neutrons in deutrium is
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1
2
3
4
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Question # 10
Es is symbol of :
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Erbium
Einsteinium
Europium
Fremium
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Question # 11
Mass no is represented by :
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A
B
C
D
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Question # 12
In chemical reaction , the substances that combine are called.
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Reactants
Products
Equlibrium
Numerator
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Question # 13
Water dissolves Non-ionic compounds by:
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Ion-Ion forces
Dipole forces
Dipole - Dipole forces
Hydrogen Bonding
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Question # 14
According to Lewis concept, acid is a substance which.
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Can donate protons
Can donate an electron pair
Can accept protone
Can accept electron pair
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Question # 15
How trace amount of acetylene present in the coat gas.
Choose an answer
0.06%
0.07%
0.08%
0.09%
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Question # 16
On which bases froth floatation process take place?
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Density bases
Concentration basis
Watting basis
None of these
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Question # 17
Which one of the ore of copper?
Choose an answer
Copper glance
Chalcopyrite
Both a and b
None of these
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Question # 18
|Which one is not an Arrhenius acid?
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HCl
H2SO
4
CO
2
HNO
3
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Question # 19
The most important disaccharide is .
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Sucrose
Glucose
Cellulose
None of them
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Question # 20
Which type of reactions take place in both directions?
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Addition reactions
Reversible reactions
Irreversibel reactions
Decomposition reactions
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Question # 21
How many percentage of protein is present in dry weight of animal?
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More then 20%
More then 30%
More then 40%
More then 50%
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Question # 22
Coal gas is mixture of
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CO and CH
4
CO . CH
4
. CO
2
CO, CH
4
, H
2
CO, H
2
and CO
2
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Question # 23
The comparative rates at which the solutes move in paper chromatography, depends on
Choose an answer
The size of paper used
Their R
f
values
Their partition coefficients
The polarity of solvent used
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Question # 24
When an atom reacts chemically and loses one or more electrons it is.
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Decomposed
Reduced
Oxidized
Catalyzed
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Question # 25
Which substances has diffused melting point.
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Crystalline solids
Amorphous solids
Metallic solids
Covalent solids
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Question # 26
The separation of the different isotopes in the mass spectrometer is done on the basis of
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Different amounts of positive changes
Charge e/m value different amounts of negative changes
Different m/e value
Velocities of the ions
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Question # 27
When aqueous NaCl is electrolyzed, which of the following ions gas discharged at anode.
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Cl-
OH-
Na+
H+
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Question # 28
If a strip of Cu metal is placed in a solution of FeSO
4
Choose an answer
Cu will be precipitated out
Fe is precipitated out
Cu and Fe both dissolve
No reaction takes place
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Question # 29
For a gas obeying Boyle's law if pressure is doubled, the volume becomes.
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Double
One half
Four times
Remains constant
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Question # 30
Choose an answer
1
2
3
None of these
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Question # 31
Solvent extraction is an equilibrium process and it is controlled by.
Choose an answer
Law of mass action
The amount of solvent used
Distribution law
The amount of solute
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Question # 32
K
a
and K
b
of a conjugate acid and are related with k
w
as
Choose an answer
K
a
+ K
b
=K
w
K
a
-K
b
=K
w
K
a
.
K
b
= K
w
K
a
/ K
b
= K
w
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Question # 33
When concentration of one product is removed at equilibrium stage, in which direction it moves to reestablish equilibrium.
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Forward
Reverse
Neither forward nor reverse
Equally move in both direction
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Question # 34
Which one of the following compounds will decolorized both acidified KMnO4 and aqueous bromine.
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Benzene
Ethane
Ethene
Methane
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Question # 35
Nylon 6,6 is obtained by the reaction of hexamethylene diamine with
Choose an answer
Acetic acid
Adipic acid
Viny chloride
Acetyl chloride
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Question # 36
Which of the following noble gas is used for arc welding and cutting
Choose an answer
Helium
Argon
Xenon
Radon
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Question # 37
The minimum temperature of troposphere is.
Choose an answer
-2
o
C
-56
o
C
-100
o
C
15
o
C
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Question # 38
Which element has lowest melting point
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Beryllium
Magnesium
Calcium
Barium
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Question # 39
The chemical composition of pyrolusite is.
Choose an answer
KMnO4
K2MnO4
MnO2
MnO
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Question # 40
The pH of unpolluted rain water should be
Choose an answer
5.00
5.60
6.50
7.00
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Question # 41
Which one is metaphosphoric acid
Choose an answer
HPO3
H3PO3
H3PO4
H4P2O7
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Question # 42
Maximum number of unpaired electrons is in
Choose an answer
O
2
O
2
+
O
2
-
O
2
2-
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Question # 43
Which of the following compounds is used to make spray, which has fungicidal action.
Choose an answer
BaSO4
Na2CO3
CaO
CaSO4.2H2O
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Question # 44
Which of these polymers is a synthetic polymer
Choose an answer
Animal fat
Starch
Cellulose
polyester
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