Health Hazards from Radiations

Q.

Do Using Smartphones or Mobile Phones have any Bad Effect on our BRAIN?

Q.

Cancer is caused by:

1. UV rays

2. Chemicals like colchicine

3. X-rays

4. All the above

Q.

Frequent X-rays exposures may cause serious health hazards.

1. True

2. False

Q. Identify the natural sources of radiations.

1. SE<S<PE<DE
2. SE<PE<S<DE
3. PE<S<SE<DE
4. S<DE>PE<SE

Q. UV rays are non-ionising type and are lethal because they damage

1. proteins
2. pigments
3. nucleic acid
4. all of these

Q.

Radioactive pollution can cause

1. Dehydration of ponds

2. All the above

3. Genetic mutations

4. Myopia

Q. Choose the correct statement(s) regarding background radiations.

1. It is the small level of radioactive radiation present in the environment
2. It originates from both natural and artificial sources
3. Diagnostic imaging applications like x-rays are CT - scan and gamma rays are sources of background radiations
4. Naturally occurring radioactive elements like radon also contribute to background radiations.
5. Nuclear weapons and nuclear sites do not contribute to background radiations

Q.

What are the harmful effects of sunrays on animals and plants