Student Corner

1. Which of the following is not the isotope of hydrogen?

A. Protium

B. Deuterium

C. Iterium

D. Tritium

2. ₈O¹⁶, ₈O¹⁷, ₈O¹⁸ are called:

A. Isotopes

B. Isotones

C. Isobars

D. Isoneutrons

3. What is the radioactive isotope of hydrogen is called?

A. Deuterium

B. Rotium

C. Radium

D. Tritium

4. Which isotope is used through the radioactive age estimation technique to obtain (determine) the age of rocks?

A. Uranium isotope

B. Plutonium isotope

C. Thorium isotope

D. Carbon isotope

5. The radio isotope used to control the disease like blood cancer (Leukaemia) is:

A. Phosphorus-32

B. Cobalt-60

C. Iodine-131

D. Sodium-24

6. Isotones are those which have:

A. Equal number of protons

B. Equal number of neutrons

C. Equal number of nucleons

D. None of these

7. The iso electronic of AI⁺³ is:

A. CI-

B. AI

C. S-

D. F-

8. The element which has same mass number but different atomic number is called:

A. Isotope

B. Isobar

C. Isoneutronic

D. Isoelectronic

9. By the emission of which isomers are produced:

A. Alpha-ray

B. Beta-ray

C. Gama-ray

D. X-ray

10. How many molecules have the methane?

A. Double bond

B. Triple bond

C. Single covalent bond

D. None of these