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Online Tests
Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
For a gas obeying Boyle's law if pressure is doubled, the volume becomes.
Choose an answer
Double
One half
Four times
Remains constant
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Question # 2
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 # 3
A filtration process could be very time consuming if it were not aided by a gentle suction, which is developed.
Choose an answer
If the paper covers the funnel up to its circumference
If the paper has got small sized pores in it
If the stem of the funnel is large so that it dips into the filtrate
If the paper fits tightly
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Question # 4
The rate of reaction
Choose an answer
Increases
Decreases
Remains the same
May decrease of increase
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Question # 5
Kw for water at 0 oc is 0.1 x 10
-34
and at 100
o
C 7.5 x 10
-14
, How many times dissociation of water increase from 0
o
Cto 100
o
C
Choose an answer
7.5 times
50 times
75 times
100 times
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Question # 6
The molecules of CO2 i dry ice form the.
Choose an answer
Ionic crystals
Molecular crystals
Amorphous
Covalent crystals
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Question # 7
The nature of bond in diamond is
Choose an answer
Electrovalent
Metallic
Coordinate covalent
Covalent
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Question # 8
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 # 9
Diamond is a bad conductor because.
Choose an answer
It has tight structure.
It has a high density
There is no free electron present in the crystal of diamond to conduct electricity
None of the above
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Question # 10
In azeotropic mixture showing positive deviation from Raoult's law the volume of the mixture is
Choose an answer
Slightly more than the total volume of the components
Slightly less than the total volume of the components
Equal to the total volume of the components
None of these
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Question # 11
The molecule of CO2 in dry ice form the.
Choose an answer
Ionic crystals
Covalent crystals
Molecular crystals
Any type of crystals
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Question # 12
The best reducing agent is
Choose an answer
F
-1
CI
-1
Br
-1
I
-1
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Question # 13
The number of H2O molecules in 9 grams of ice is
Choose an answer
3.01 x 10
23
6.02 x 10
23
6.02 x 10
8
12.04 x 10
23
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Question # 14
"The components of which mixture can be separated by filtration".
Choose an answer
NaCl and CaCl2
Calcium carbonate and NaCl
Blue and green inks
Sand and naphthalene
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Question # 15
The molarity of 2% w/v NaOH solution is
Choose an answer
2
0.25
0.05
0.5
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Question # 16
Which one of the following salts dissolved in water to form a solution with a pH lesser than 7
Choose an answer
NaCl
CuSO4
Na2CO3
NH4Cl
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Question # 17
Borax has the chemical formula.
Choose an answer
KNO3
Na2B3O7.10H2O
Na2CO3
NaNO3
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Question # 18
Heat of solution of an ionic compound is equal to.
Choose an answer
Hydration energy
Lattice energy
Slum of both 'a' and 'b'
Difference of both a and b
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