SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Artificial radioactivity was discovered by ______.

In which of the following, no change in mass number of the daughter nuclei takes place

1. α decay
2. β decay
3. γ decay
4. neutron decay

Gamma radiations are dangerous because

________ aprons are used to protect us from gamma radiations.

Positron is an ________.

Abbreviation of ICRP______.

_______ is used to measure exposure rate of radiation in humans.

The radio isotope of ________ helps to increase the productivity of crops.

If the radiation exposure is 100 R, it may cause ______.

Match: III

Use the analogy to fill in the blank

Spontaneous process: Natural Radioactivity, Induced process: _______.

A cobalt specimen emits induced radiation of 75.6 millicurie per second. Convert this disintegration in to becquerel (one curie = 3.7 × 10¹⁰ Bq)

Mark the correct choice as

1. Assertion: In a β - decay, the neutron number decreases by one.
2. Reason: In β - decay atomic number increases by one.

Who discovered natural radioactivity?

If A is a radioactive element which emits an α - particle and produces ₁₀₄Rf ²⁵⁹. Write the atomic number and mass number of the element A

Give the SI unit of radioactivity.

Which material protects us from radiation?

Mr. Ramu is working as an X-ray technician in a hospital. But, he does not wear the lead aprons. What suggestion will you give to Mr. Ramu?

Cell phone towers should be placed far away from the residential area – why?

The forelimbs of bat and human are examples of ______ organs.