Safety Measures

Q. An accident in a nuclear laboratory resulted in deposition of a certain amount of radioactive material of half-life 18 days inside the laboratory. Tests revealed that the radiation was 64 times more than the permissible level required for safe operation of the laboratory. What is the minimum number of days after which the laboratory can be considered safe for use?

Q. Why should a radioactive substance not be touched by hand?

1. It is very cold
2. It can harm our body
3. None of the above
4. It is hot

Q. Uncontrolled nuclear reaction is used for___.

1. destruction
2. electricity
3. heating
4. mining

Q.

State any two ways to minimize the harmful effects on the human body.

Q. Find the word common to the following that helps in managing waste.

1. 
2. 
3. 
4. 

Q. Two radioactive samples $A$ and $B$ have half lives $T_{1}and{T}_2(T_1>T_2)$ respectively. At $t=0$, the activity of $B$ was twice the activity of $A$. Their activity will become equal after a time

1. $\frac{T_1{T}_2}{T_1-T_2}$
2. $\frac{T_1-T_2}{2}$
3. $\frac{T_1{T}_2}{T_1+T_2}$
4. $\frac{T_1+T_2}{2}$

Q.

Household waste disposal is mainly done by?

Q. Currently, nuclear power provides approximately ___ of the world's energy.

1. About 11%
2. Nearly 75%
3. About one-third
4. Less than 1%

Q. State the precautions to be taken, while handling nuclear reaction materials.

Q. What percentage of energy requirement of India is met by nuclear power stations?

1. 3%
2. 5%
3. 10%
4. 20%

Q. Fill in the blank.
__________ arises from the 'burning' of uranium fuel in a nuclear reactor.

1. Low-level- waste
2. High-level waste
3. Intermediate level waste
4. Very low level waste

Q.

Which of the following nation is the worlds leading user of nuclear electricity?

1. USA

2. India

3. Luthuania

4. Germany

Q. What was the installation at Chernobyl where the disaster took place? What, according to you, was the cause of this disaster?

Q.

What percentage of energy requirement of India is met by nuclear power stations?

1. $3\%$

2. $5\%$

3. $10\%$

4. $20\%$

Q. How should the spent fuel of a nuclear reactor be disposed?

Q. Which type of bag is general waste put into?

1. Containers lined with black bags
2. Containers lined with clear bags
3. Sharp containers
4. Containers lined with yellow bags

Q. The various types of nuclear reactors that have been constructed to furnish heat for the production of steam differ from each other in what ways?

1. In what kind of moderator is used
2. How the heat energy is used to generate steam
3. How the reactor core is cooled
4. They can differ in all of the above ways

Q. Spent fuel rods and obsolete nuclear weapons are examples of

1. decommissioned waste
2. high-level nuclear waste
3. low-level nuclear waste
4. recycled nuclear waste
5. itinerant nuclear waste

Q. PPE is

1. equipments for handling radioactive waste.
2. equipments for handling radioactive substance.
3. Personal Protective Equipment
4. none of the above