General Knowledge

Chemistry - Section 1

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Chemistry - Section 1

Practice and master this topic with our carefully crafted questions.

9 Questions
14 Minutes
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Question 71
The inherited traits of an organism are controlled by

A
RNA molecules
B
nucleotides
C
DNA molecules
D
enzymes
Correct Answer: Option C

No answer description available for this question.

Question 72
The heat energy produced when the human body metabolises 1 gram of fat is

A
30 KJ
B
1 KJ
C
39 KJ
D
29 KJ
Correct Answer: Option C

No answer description available for this question.

Question 73
What are the number of moles of CO2 which contains 16 g of oxygen?

A
0.5 mole
B
0.2 mole
C
0.2 mole
D
0.25 mole
Correct Answer: Option A

One mole of CO2 has mass of 44 g and 32 g of O2. So 16 g of O2 have 22 g of CO2 or 0.5 moles of it.

Question 74
The nucleus of a hydrogen atom consists of

A
1 proton only
B
1 proton + 2 neutron
C
1 neutron only
D
1 electron only
Correct Answer: Option A

No answer description available for this question.

Question 75
The heat required to raise the temperature of body by 1 K is called

A
specific heat
B
thermal capacity
C
water equivalent
D
None of the above
Correct Answer: Option B

No answer description available for this question.

Question 76
The nuclear particles which are assumed to hold the nucleons together are

A
electrons
B
positrons
C
neutrons
D
mesons
Correct Answer: Option D

No answer description available for this question.

Question 77
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

A
2.05 gram
B
3.05 gram
C
4.05 gram
D
5.05 gram
Correct Answer: Option B

No answer description available for this question.

Question 78
The octane number of zero is assigned to
A
2-methyl octane
B
n-heptane
C
iso-octane
D
3-methyl octane
Correct Answer: Option B

No answer description available for this question.

Question 79
The metal that is used as a catalyst in the hydrogenation of oils is

A
Ni
B
Pb
C
Cu
D
Pt
Correct Answer: Option A

No answer description available for this question.

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