Which of the following are uses for radiation and radioactivity that are of benefit to us?
i. Nuclear waste
ii. Radioisotopes
iii. Excess exposure

i only

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ii only

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iii only

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i and ii only

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i and iii only

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Solution

The correct option is B ii only
ii. Radioisotopes are used for radiation and radioactivity that are of benefit to us
On the other hand, i. Nuclear waste and iii. Excess exposure
are not useful to us.
Note: Some of the applications of the radioisotopes includes
(i) carbon dating (ii) rock dating (iii) in medicines such as use of I-131 in treatment of thyroid and and the use of Co - 50 to check cancer growth

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Similar questions

Q. The nuclear radiations produced during natural radioactivity are only gamma rays.

Q. How many of the following statements is/are correct?
I. Safe disposal of radioactive wastes is an inherent problem with the use of nuclear energy
II. Accidental leakage of radioactive energy happened during the Bhopal Gas tragedy
III. Nuclear radiations can lower the rate of occurrence of mutations in our genomes
IV. Cancer is one of the most commonly caused disorders due to exposure to harmful radiations

Q. (i) What is meant by Radioactivity?
(ii) What is meant by nuclear waste?
(iii) Suggest one effective way for the safe disposal of nuclear waste.

Q. Consider the following statements:

1.

Radioactivity tracers are commonly used in the medical field and also in the study of plants and animals.

2.

Radiation is used and produced in nuclear reactors, which controls fission reactions to produce energy and new substances from the fission products.

3.

Radiation is also used to sterilize medical instrument and food.
Which of the statement given above are correct?

Which of the following statements are true?
(i) In case of microbial enzymatic reactions, elimination and decomposition of waste materials are avoided.
(ii) Microbial enzymes are active only at high temperature.
(iii) MIcrobial enzymes are eco-friendly.

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Which of the following are uses for radiation and radioactivity that are of benefit to us?i. Nuclear wasteii. Radioisotopesiii. Excess exposure

Which of the following are uses for radiation and radioactivity that are of benefit to us?
i. Nuclear waste
ii. Radioisotopes
iii. Excess exposure