Chemistry (2016) | Study Mode

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Question 11
A
Red
B
Yellow
C
Pink
D
Blue
Explanation

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Correct option: D
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Question 12
A
Dilute ammonia
B
Benedict's solution
C
Tollen's reagent
D
Sodium hydroxide solution
Explanation

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Correct option: C
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Question 13
A
They have different number of carbon atoms
B
They are members of same homologous series
C
They have the same boiling points
D
They have the same chemical properties
Explanation

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Correct option: D
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Question 14
A
Tanning
B
Bottling
C
Laundry
D
Dyeing
Explanation

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Correct option: B
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Question 15
A
0.05 moldm-3
B
0.30 moldm-3
C
0.50 moldm-3
D
0.40 moldm-3
Explanation
2g NaOH is contained in 100cm3
Xg NaOH is contained in 1000cm3

Xgram = \(\frac{2\times 1000}{100}\) = 20g

Mole = \(\frac{20}{40}\) = 0.50mol/dm3

Correct option: C
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Question 16
A
Phosphorus-32
B
Cobalt-60
C
Carbon-14
D
Iodine-131
Explanation

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Correct option: B
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Question 17
A
Na2CO3
B
Na2O
C
NaNO2
D
NaOH
Explanation

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Correct option: B
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Question 18
A
CFCs
B
NO2
C
SO2
D
CO
Explanation

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Correct option: A
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Question 19
A
Kinetic energy of particles increases from solid to gas
B
Random motion of particles increases from gas to solid
C
Orderliness of particles increases from gas to liquid
D
Random motion of particles increases from liquid to gas
Explanation

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Correct option: B
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Question 20
A
Chains and agricultural implements
B
Iron sheets and retort stand
C
Nails and iron rods
D
Stoves and cookers
Explanation

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Correct option: D

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