1.A. The most familiar baryons are the protons and neutrons.

B. Electrons are leptons.

Which of the above statement is/are correct?

1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

2.What is sonic boom?

1. A common name for the loud noise that is created by the ‘shock wave’ produced by the air-plane that is traveling at speeds greater than that of sound.
2. It is a technique which has provided a new dimension to genome editing.
3. It will witness the formation and destruction of star-forming clouds.
4. It reduces carbon dioxide to carbon monoxide with sunlight.

3.Recently tens of millions of people worldwide suffering from neurodegenerative diseases. It causes;

1. Eyesight
2. Leprosy
3. Malaria
4. Typhoid

4. Recently Bhabha Atomic Research Centre has designed Advanced Heavy Water Reactor for utilisation of:

1. Baryon
2. Leptons
3. Thorium
4. Fluoride

5.With reference to coalbed methane, which of the following statements is/are wrong?

1. It is also called as ‘sweet gas’.
2. Coalbed methane lacks hydrogen sulfide.
3. Coalbed methane contains very little heavier hydrocarbons.

Choose the correct option:

1. Only A and C
2. Only B and C
3. All of the above
4. None of the above

6. A. Baryon is a composite subatomic particle made up of three quarks.

B. Baryons and mesons belong to the hadron family of particles, which are the quark-based particles.

C. Baryons are quark based particles whereas leptons are not quark-based.

Choose the correct option:

1. Only A and C
2. Only B and C
3. Only C
4. All of the above

7. With reference to arsenic sulphide, which of the following statement is/are correct?

1. The chemical is mostly used in firecrackers and was used to make a pressure cooker bomb.
2. A drug to reduce cholesterol levels.
3. It is made of gas that is around 250 times purer than the Moon.
4. A pure elemental crystal.

8.Which of the following is/are correct with reference to CRISPR-Cas9?

1. It is a technique which has provided a new dimension to genome editing.
2. India has not permitted trials of CRISPR-Cas9 technology to edit the human germline.

Choose the correct option:

1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

9. Which of the following statement in the context of carbon monoxide is/are correct?

1. Burning fuel – such as carbon monoxide – produces carbon dioxide and releases energy.
2. Turning carbon dioxide back into fuel requires at least the same amount of energy.

Choose the correct option:

1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

Which of the following disease is caused by consumption of contaminated drinking water?

1. Cholera
2. Diarrhoea
3. Enteric Fever
4. Hepatitis A & E

Choose the correct option:

1. Only A and D
2. Only A and C
3. A, B and D
4. All of the above

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