Chemistry (2018) | Study Mode

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Question 11
A

Fractional distillation

B

Filtration followed by distillation

C

Neutralization with sodium hydroxide followed by distillation

D

Neutralization with sodium hydroxide followed by filtration

E

esterification with ethanol followed by distillation

Explanation

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Correct option: D
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Question 12
A
2.7 g
B
1.2 g
C
0.9 g
D
0.3 g
Explanation

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Correct option: D
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Question 13
A
sodium dioxonitrate (III) and ammonium chloride
B
sodium trioxonitrate (V) and ammonium chloride
C
sodium chloride and ammonium trioxonitrate (V)
D
sodium chloride and ammonium diozonitrate (III).
Explanation

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Correct option: A
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Question 14
A
1
B
2
C
3
D
4
Explanation

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Correct option: D
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Question 15
A

10cm3

B

12cm3

C

14cm3

D

16cm3

Explanation

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Correct option: D
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Question 16
A
lead oxide
B
Magnesium oxide
C
Copper oxide
D
Tin oxide
Explanation

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Correct option: B
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Question 17
Chemistry (2018) Q 17 image
A

1 -methylpentane

B

3-methylbutane

C

2-methylbutane

D

1 -dimethylpropane

Explanation

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Correct option: C
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Question 18
A
Zn2+
B
Ca2+
C
Al3+
D
Pb2+
Explanation

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Correct option: A
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Question 19
A
0.40 mol dm-3
B
0.50 mol dm-3
C
0.05 mol dm-3
D
0.30 mol dm-3
Explanation

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Correct option: B
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Question 20
A
1.20 x 1022
B
2.41 x 1022
C
1.51 x 1023
D
3.02 x 1023
Explanation

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Correct option: C

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