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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
O3, Ozone is _________ molecules.
Choose an answer
Homoatomic
Hetroatomic
Monoatomic
Nil
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Question # 2
Mass no is represented by :
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A
B
C
D
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Question # 3
________________ is triangular in shape.
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BCL3
H2O
CO2
NH3
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Question # 4
Half life of C-14 ________________ years.
Choose an answer
5800
5700
5600
5500
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Question # 5
The atomic number of potassium is:
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11
15
18
19
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Question # 6
Which gas will diffuse faster than others?
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Hydrogen
Oxygen
Chlorine
Nitrogen
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Question # 7
The No. of atoms in 1 mole of carbiton is
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6.02 x 1021
6.02 x 1022
6.02 x 1023
6.02 x 1024
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Question # 8
One atmospheric pressure is equal to how many pascals?
Choose an answer
101325
10325
106075
10523
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Question # 9
________________ proposed that matter is composed of small particles.
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Greek
English's
Russian
Nil
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Question # 10
Non-metals are generally soft, but which one of the following is extremely hard?
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Graphite
Phosphorus
Iodine
Diamond
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Question # 11
Which one metal is least reactive?
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K
Fe
Cu
AI
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Question # 12
Stearic acid present in
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Apple
Fats
Urine
Grapes
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Question # 13
Main component of natural gas is
Choose an answer
Methane
Propane
Butane
Propene
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Question # 14
Which one of the following does ot contain protein
Choose an answer
Pulses
Potatoes
Beans
eggs
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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
We exhale gas in the atmosphere during respiration.
Choose an answer
Carbon dioxide
Oxygen
Nitrogen
Water
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Question # 17
The number of carbon atoms present in petroleum gas.
Choose an answer
1-2
1-3
1-4
1-5
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Question # 18
Hook worm infects.
Choose an answer
Liver
Small intestine
Large intestine
Stomach
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Question # 19
Which ion cause water hardness?
Choose an answer
Al
2
Mg
2
Fe
2
Na
2
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Question # 20
The most important disaccharide is .
Choose an answer
Sucrose
Glucose
Cellulose
None of them
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Question # 21
Which one of the following is testeless?
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Sucrose
Glucose
Fructose
Starch
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Question # 22
Petroleum is refined by
Choose an answer
Destructive distillation
Fractional distillation
Simple distillations
Dry distillation
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Question # 23
Orbitals having same energy are called.
Choose an answer
Hybrid orbitals
Valance orbitals
Degenerate orbitals
d- orbitals
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Question # 24
A solution of glucose is 10% The volume in which 1 g mole of it dissolved will be.
Choose an answer
1 dm3
1.8 dm3
900 cm3
200 cm3
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Question # 25
If salt bridge is not used between two half cells, than the voltage.
Choose an answer
Decreases rapidly
Decreases slowly
Does not change
Drops of zero
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Question # 26
The voltage Nickel Cadmium cell is
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1 V
1.2 V
1.4 V
1.6 V
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Question # 27
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 # 28
Gases of air, always remains in the random motion and do not settle due to.
Choose an answer
Elastic collision of gas molecules
Unequal number of different gas molecules
Difference impartial pressure of gas molecules
Difference in molecular masses of air gases
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Question # 29
The volume of a gas at 0 oC is 273 dm3, the pressure remaining constant. At which temperature its volume will be doubled.
Choose an answer
273 K
273
o
C
546
o
C
316 K
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Question # 30
Hund's rule state that when electrons enter to the same sub levels they are.
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Singly occupied with same spin
Doubly occupy with same spin
Singly occupied with different spin
Doubly occupied with different spin
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Question # 31
The rate of reaction
Choose an answer
Increases
Decreases
Remains the same
May decrease of increase
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Question # 32
After 3 half life of a chemical reaction, amount of reactant un reactive will be.
Choose an answer
50%
25%
12.5%
6.25%
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Question # 33
Which of the following orbitals is not possible.
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3p
4s
2d
Is
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Question # 34
The state of hybridization of "C" in ethane is
Choose an answer
SP
sp
2
dsp
2
sp
3
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Question # 35
Which one of the following polymers has no peptide linkage in it.
Choose an answer
Terlene
Nylon -6,6
Protein
None of these
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Question # 36
A carbohydrate that cannot be acid hydrolysed is called.
Choose an answer
Monosaccharides
Di saccharides
Poly saccharides
Starch
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Question # 37
Fluorine is in group VII A of periodic table. Its chemistry will most closely resembles that of.
Choose an answer
Argon
Boron
Iodine
Sulphur
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Question # 38
P2O5 is usually used as
Choose an answer
Drying agent only
Reducing agent
Both drying and reducing agent
Both drying agent and oxidizing agent.
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Question # 39
Which compound is called universal solvent
Choose an answer
CH
3
OH
C
2
H
5
OH
CH
3
O CH
3
H
2
O
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Question # 40
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 # 41
Which one of the following species is a nucleophile
Choose an answer
CH3
(CH3)2 C
BF3
OH-
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Question # 42
Sulphur is essential constituent for plants. Which is not role of sulphur
Choose an answer
Chlorophyll development
Development of root system
Constituents of some proteins
Increase transpiration force
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Question # 43
Alkali metal whose carbonate is is relatively less stable and decomposes giving its oxides is.
Choose an answer
Li
Ba
K
Rb
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Question # 44
Phenol after reduction with hydrogen changes to
Choose an answer
Picric acid
Benzene
Cyclohexane
Cyclohexanol
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