Chemistry Past Paper Questions

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Q 711:Depending upon temperature variation, atmosphere has been divided into number if region / d.
A
4
B
3
C
2
D
1
Sahiwal, 2018
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Q 712:Formula of urea is:
A
NH2CONH2
B
NH2CONH4
C
NH2COONH2
D
NH2COONH4
Sahiwal, 2018
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Q 713:Guldberg and Waag put forward the law of mass action in:
A
1989 AD
B
1979 AD
C
1869 AD
D
1859 AD
Sahiwal, 2018
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Q 714:In equilibrium state Kc is equal to:
A
Rf / Kf
B
Rf / Rr
C
Kf / Kr
D
Kr / Kf
Sahiwal, 2018
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Q 715:Permanent hardness of water is removed by adding.......
A
Soda lime
B
Quicklime
C
Lime water
D
Sodium zeolite
Sahiwal, 2018
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Q 716:Long form of periodic table consists of how many horizontal lines
A
32
B
18
C
7
D
8
Sahiwal, 2018
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Q 717:Mist is an example of solution.
A
Liquid in gas
B
Gas in liquid
C
Solid in gas
D
Gas in solid
Sahiwal, 2018
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Q 718:Molarity is the number of moles of solute dissolved in
A
1 kg of solution
B
100 g of solvent
C
1 dm3 solvent
D
1 dm3 of solution
Sahiwal, 2018
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Q 719:One atmospheric pressure is equal to how many torrs?
A
101325
B
765
C
760
D
10325
Sahiwal, 2018
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Q 720:Deuterium is used to make
A
light water
B
Heavy water
C
Soft water
D
Hard water
Sahiwal, 2018
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Total MCQs: 1548Page 72 of 155
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