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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
Bucky balls was discovered in ________________
Choose an answer
1965
1975
1985
1995
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Question # 2
There are ____________ types of solids.
Choose an answer
1
2
6
4
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Question # 3
Which one of the following pair has the same mass?
Choose an answer
1 mole of CO and 1 mole of N
2
1 mole of CO and 1 mole of CO
2
1 mole of O
2
and 1 mole of N
2
1 mole of O
2
and 1 mole of CO
2
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Question # 4
Fog is an example of ____________ in gas.
Choose an answer
Solid
Liquid
Gas
Plasma
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Question # 5
Electron _____________ energy when thy jump from higher to lower level.
Choose an answer
Absorb
Radiate
Nothing
Nil
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Question # 6
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 # 7
The formula of rust is:
Choose an answer
Fe
2
O
3
,nH
2
o
Fe
2
O
3
Fe(OH)
3
-nH
2
O
Fe(OH)
3
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Question # 8
Half life of C-14 ________________ years.
Choose an answer
5800
5700
5600
5500
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Question # 9
It is a triatomic molecule
Choose an answer
Sodium chloride
Water
Chalk
Glucose
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Question # 10
In period, ionization energy of elements
Choose an answer
Increases
Decreases
Remains constant
None of these
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Question # 11
A binary solution consists of:
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One component
Two components
Three components
Many components
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Question # 12
The reaction goes from left to right , if:
Choose an answer
Qc = Kc
Qc > kc
Qc<Kc
Qc = 0
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Question # 13
Which one of the following is manufactured by Solvar's process:
Choose an answer
caustic soda
washing soda
urea
sulphuric acid
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Question # 14
Word "acid" derived from:
Choose an answer
Urdu
English
Latin
Greek
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Question # 15
According to Arrhenius concept acid is a substance which dissociates in aqueous solution to give.
Choose an answer
Hydrogen ions
Hydroxide ions
Both a and b
None of these
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Question # 16
Which acid is present in our stomach.
Choose an answer
Nitric acid
Hydrochloric acid
Sulphuric acid
All of these
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Question # 17
According to Bronsted and Lowry concept an acid is a substance that can donate.
Choose an answer
Proton
Electron pair
Neutron
Electron
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Question # 18
Normaily rain water is weakly acidic because.
Choose an answer
SO
3
CO
2
CO
3
NO
2
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Question # 19
the removal of which ion causes water softening.
Choose an answer
Na
+
Mg
2
Li
+
K
+
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Question # 20
Rapid growth of algae in water bodies in because of detergent having.
Choose an answer
Carbonat salt
Sulphonic acid
Sulphat salt
Phosphate salt
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Question # 21
Wood contain the amount of carbon.
Choose an answer
70%
80%
60%
40%
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Question # 22
Which one of the following salts makes the water permanent hard.
Choose an answer
NaCO
3
NaHCO
3
Ca(HCO
3
)
2
CaSO
4
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Question # 23
Rate of diffusion of CO and N
2
are same at room temperature due to the reason, that
Choose an answer
Both are diatomic molecules
Both have same multiple bond in them
Both have lone pairs in them
Both have same molar masses
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Question # 24
Stronger the oxidizing agent greater is the
Choose an answer
Oxidation potential
Reduction potential
Redox potential
E.M.F of cell
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Question # 25
The spreading of fragrance of a rose or scent in air is due to.
Choose an answer
Effusion
Diffusion
Osmosis
Evaporation
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Question # 26
When i
2
present in the aquous layer in the form of I
-1
3
foes to CCI
4
layer, then the change in colour is from
Choose an answer
Purple to brown
Purple to green
Green to brown
Brown to purple
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Question # 27
Which of the following molecule has zero dipole moment.
Choose an answer
NH3
CHCl3
H2O
BF3
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Question # 28
If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.
Choose an answer
Remain unchanged
Increase four times
Reduce to 1/4
Be doubled
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Question # 29
One of the following substances is not used as a drying reagent in a desiccator
Choose an answer
Cons. H
2
SO
4
P
2
O
5
Silica gel
50% KOH
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Question # 30
If we want to change O
2
to O
2
-1
The electron is to be placed in
Choose an answer
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Question # 31
The gain of electron is known as.
Choose an answer
Oxidation
Reduction
Dehydration
Dehydrogenation
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Question # 32
The largest number of molecules are present in
Choose an answer
3.6 of H2O
4.6 g of C2H5OH
2.8 g of CO
5.4 g of N2O5
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Question # 33
Which one of the following relationship is correct about energy and frequency.
Choose an answer
E = hv
E = h/v
E = v/h
h = v/E
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Question # 34
The structure of Benzene is
Choose an answer
Hexagonal irregular
Tetrahedral
Trigonal planner
Hexagonal planner
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Question # 35
On heating aldehydes with Fehling's solution we get a precipitate whose colour is
Choose an answer
Pink
Black
Yellow
Brick red
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Question # 36
Which element forms on ion wiht charge 3+
Choose an answer
Beryllium
Aluminium
Carbon
silicon
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Question # 37
Water is disinfected by a substance to avoid toxification
Choose an answer
KMnO
4
Alums
O
3
Cl
2
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Question # 38
In which substance phosphorus is not present.
Choose an answer
Yolk of egg
Bones
Apatite
Galena
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Question # 39
Corundum is
Choose an answer
Al2O3
Na2AlF6
Quartz
Calcium
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Question # 40
Which one of the following complexes is chelate.
Choose an answer
Potassium hexacyanoferrate (II)
Diammine silver (I) Chloride
Tetracarbonylnikel (0)
Sodium dioxalatoplatinate (II)
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Question # 41
Maximum number of unpaired electrons is in
Choose an answer
O
2
O
2
+
O
2
-
O
2
2-
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Question # 42
Synthetic rubber is made by polymerization of
Choose an answer
Vinylaecetate
Acetylene
Divinylacetylene
Chloroprene
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Question # 43
Oxides of alkaline earth metal are
Choose an answer
Acidic
Basic
Neutral
Amphoteric
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Question # 44
In which ore carbon is present
Choose an answer
Magnesite
Epsom salt
Barite
Sylvite
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