Chemistry Past Paper Questions

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Q 331:Amount of carbon in lignite coal is:
A
60%
B
70%
C
80%
D
90%
Sargodha, 2019
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Q 332:At which temperature density of water is maximum?
A
0oC
B
4oC
C
100oC
D
120oC
Sargodha, 2019
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Q 333:Concentration is a:
A
Mixing technique
B
Separating technique
C
Boiling technique
D
Cooling technique
Sargodha, 2019
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Q 334:Crude oil is heated in the furnace upto:
A
300oC
B
350oC
C
400oC
D
450oC
Sargodha, 2019
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Q 335:Depending upon temperature variation, atmosphere is divided into how many regions?
A
One
B
Two
C
Three
D
Four
Sargodha, 2019
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Q 336:d-block elements are also named as:
A
Alkali metals
B
Halogens
C
Transition Metals
D
Alkaline earth metals
Sargodha, 2019
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Q 337:Atoms react with each other because:
A
They are attracted to each other
B
They want to attain stability
C
They are short of electrons
D
They want to disperse
Sargodha, 2019
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Q 338:Colour of flame of sodium is:
A
Violet
B
Brick red
C
Golden yellow
D
White
Sargodha, 2019
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Q 339:6th and 7th period of long form of periodic table are called:
A
Short periods
B
Long periods
C
Very long periods
D
Normal periods
Sargodha, 2019
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Q 340:A bond pair in covalent molecules usually has:
A
One electron
B
Two electrons
C
Three electrons
D
Four electrons
Sargodha, 2019
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Total MCQs: 1548Page 34 of 155
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