Chemistry (2016) | Study Mode

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Question 21
A
CH3 -CH2 -CHO2 -COOH
B
CH3 -C = CH
C
CH3 -CH2 -CH2 -CH3
D
CH2 -CH2 -CH3
Explanation

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Correct option: C
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Question 22
A
CH3CH2CHO and H2
B
CH3CHO and CO2
C
CH3CH2COOH and H2
D
CH3COOH and CO2
Explanation

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Correct option: D
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Question 23
A
C1H2n-2
B
C1H2n-1CHO
C
C1H2n-2OH
D
C2H2n+1OH
Explanation

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Correct option: D
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Question 24
A
Ca(OH)2
B
NH3
C
NaOH
D
Al(OH)3
Explanation
Both NH3 and Al(OH)3 are not alkali

Correct option: B
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Question 25
A
Elements in the same group have the same number of electron shells
B
The non-metallic properties of the elements tend to decrease across each period
C
Elements in the same period have the same number of valence electrons
D
The valence electrons of the elements increase progressively across the period
Explanation

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Correct option: D
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Question 26
A
Zn
B
Sn
C
Cn
D
Ca
Explanation

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Correct option: B
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Question 27
A
NO
B
CO
C
SO2
D
CuO
Explanation

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Correct option: C
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Question 28
A
2.0cm 3
B
5.0cm 3
C
6.8cm 3
D
8.3cm 3
Explanation

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Correct option: A
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Question 29
A
In making bicycle chains
B
As abrasives
C
In cutting glass and metals
D
As dies for drawing wires
Explanation

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Correct option: A
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Question 30
A
Carbonyl group
B
Hydroxyl groupd
C
Phenyl group
D
Methyl group
Explanation

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Correct option: B

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