HARD
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Consider the following substances

1. Heavy water   

2. Graphite

Which of the substances given above is/are used as a moderator in a nuclear reactor?

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Important Questions on Chemistry

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 15
In an atomic explosion, enormous energy is released which is due to the:
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 16
Which of the following has the least penetrating power?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 17
By which one of the following an old written material which cannot be read easily, can be read?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 18

What is the correct ascending order for frequencies of the following radiations?
1. Visible
2. X-rays
3. Ultraviolet
4. Radio waves

HARD
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 19
In spontaneous beta particle (β-1) emission, what is the source of emitted electron?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 20
Which of the following is used as a coolant in nuclear reactors?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 21
Which of the following is good nuclear fuel?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 3>Q 22
The isotope R86222n disintegrates by a decay series of α and β emissions to its conclusion at P82206b. What are the numbers of α and β particles lost respectively?