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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
________________ proposed that matter is composed of small particles.
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Greek
English's
Russian
Nil
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Question # 2
The modern periodic table is based on:
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Atomic number
Mass number
Relative mass
Nil
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Question # 3
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 # 4
The branch of chemistry which deals with inter conversion of electrical & chemical energy is:
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Biochemistry
Electrochemistry
Organic chemistry
None of these
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Question # 5
Polyatomic molecules consist of _________ atoms.
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1
More than 1
Less than 1
2
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Question # 6
At ____________ °C water converts to ice.
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101°
100°
99°C
100.2°C
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Question # 7
Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:
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Strong metallic bonding.
Weak metallic bonding
Non- metallic bonding
Moderate metallic bonding
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Question # 8
When an electronegative element combines electropositive element the type of bonding is
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covalent
ionic
polar covalent
coordinate covalent
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Question # 9
Ionic compound are ________________ in water.
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insoluble
Soluble
Covalent
Solvent
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Question # 10
Nelson's cells used to prepare caustic soda along with gases. Which of the following gas is produced at cathode?
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CI
2
H
2
O
3
O
2
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Question # 11
________________ is triangular in shape.
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BCL3
H2O
CO2
NH3
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Question # 12
Margarine is produced by adding hydrogen to vegetable oil at.
Choose an answer
2000
o
C
100
o
C
200
o
C
1000
o
C
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Question # 13
Permanent hardness is removed by adding.
Choose an answer
Na
2
zeolite.
Soda lime
Lime water
Quick lime
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Question # 14
Building and Monuments lose their beauty and shine due to
Choose an answer
U.V radiations
Chlorofluoro carbons
Acid rain
IR radiations.
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Question # 15
the chemical formula of chalcopyrite is:
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Cu
2
S
CuFe
2
S
CuS
FeS
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Question # 16
Which one gas is liberated when alkalies react with ammonium salts?
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O
2
CO
2
H
2
NH3
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Question # 17
Which of the following statement s is not true about fossil fuels?
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they all contain carbon
They are renewable
they produce pollutants when burnt
they cause acid rain
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Question # 18
At dynamic equilibrium:
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The reactions stops to proceed
The amounts of reactants and products are equal
The speed of the forward is reverse reactions are equal
The reaction can no longer be reversed
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Question # 19
Arrhenius presented his concept about acids and bases in.
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1785
1787
1923
1930
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Question # 20
A dynamic equilibrium
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Reaction stops to proceed
Amounts of reactants and products are equal
Rate of forward and reverse reaction are equl
Reaction can no longer be reversed.
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Question # 21
In shoe polished, which chemical is used.
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Ethanol
Methanol
Carbon black
Formaldehyde
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Question # 22
Formula of baking soda is.
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Na
2
CO
3
NaHCO
3
Na
2
SO
4
Na
2
PO
4
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Question # 23
Solubility curve of CaCl26H2O shows
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Decrease in solubility with increase of temperature
Increase in solubility with increase of temperature
Discontinuous increase in solubility with temperature
No effect of temperature on solubility
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Question # 24
Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0
o
C
Choose an answer
546
o
C
200
o
C
546 K
273 K
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Question # 25
Stronger the oxidizing agent, greater is the
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oxidation potential
Reduction potential
Redox potential
E.M.F of cell
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Question # 26
Which is not a molecular ion.
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He+
CH3+
NH3-
CO+
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Question # 27
What happens to the enthalpy change when the coeffficients of a chemical equation are douubled
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It doubles
It becomes half
It does not change
It cannot be predicted
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Question # 28
One mole of Carbon -12 has mass
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0.012 kg
1 kg
0.022 kg
12 kg
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Question # 29
Which of the following will have the same number of molecules at STP
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280 cm
3
of CO
2
and 280 cm
3
of N
2
O
11.2 dm
3
of O
2
and 32 g of O
2
44 g of CO
2
and 11.2 dm
3
of CO
28 g of N
2
and 5.6 dm
3
of oxygen
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Question # 30
The nature of copper crystals is
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Metallic
Ionic
Covalent
Molecular
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Question # 31
12.04 x 10
23
atoms of nitrogen gas is equal to.
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1 mol
2 mol
3 mol
4 mol
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Question # 32
Which properties of liquid is measured by polarimeter
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Conductance
Refractive index
Optical activity
Change in volume
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Question # 33
In lead accumulator cathode is made up of.
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Pb
Pb coated with PbO2
PbSO4
Mixture of Pb and PbO2
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Question # 34
Which form of phosphorus is more stable.
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White
Red
Black
Both a and b
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Question # 35
Which one of the following is not an alkali metal.
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Francium
Cesium
Rubidium
Radium
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Question # 36
Which one of the following species is a nucleophile
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CH3
(CH3)2 C
BF3
OH-
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Question # 37
The substance that retard the activity of enzyme is called.
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Co enzyme
Epo enzyme
Activity
Substrate
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Question # 38
Which is not an ore of iron
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haematite
Magnetite
limonite
Cassiterite
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Question # 39
Vinyl acetylene combines with HCl to form
Choose an answer
Polyacetylene
Benzene
Chloroprene
Divinyl acetylene
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Question # 40
Main source of aromatic compound is
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Petroleum
Coaltar
Living organisms
Dead marine animals
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Question # 41
In which compound, oxidation state of sulphur is +6
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H2S
H2SO4
H2SO3
SO3
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Question # 42
Alcohol obtained by fermentation is only upto
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10%
12%
20%
95%
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Question # 43
The macronutrients are required in quantities ranging from
Choose an answer
4-40 kg per acre
10-100 kg per acre
5-100 kg per acre
5-200 kg per acre
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Question # 44
The general formula for Alkanes is
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C
n
H
2n+1
C
n
H
2n
C
n
H
2n-2
C
n
H
2n+2
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