Question

A. Choose the best answer 1. Atoms of the same element having same atomic number but different number are called (wisotopes (b) isobars (c) isotones (d) isomerism 2. Deuterium nucleus consists of (a) 2 protons only (b) one neutron (c) one proton and one neutron (d) 2 protons and one neutron 3. Deuterium with oxygen gives (a) oxydeuterium (b) water (c) heavy water (d) all the above 4. Tritium is prepared by bombarding lithium with (a) deutrons (b) mesons (c) slow neutrons (d) all helium nucleus 5. At room temperature ordinary hydrogen consists of about (a) 25% para and 75% ortho (b) 75% para and 25% ortho (c) 99% para and 1% ortho (d) 1% para and 99% ortho 6. DO reacts with P20, and gives (a) DPO4 (b) D,PO (c) D PO (d) D.PO is used for the preparation of deuterium (a) deuterium oxide (b) heavy water (c) both a and b (d) deuterium peroxide 7.​

Answer 1

Answer:

1. (c) isotones

2. (c) one proton and one neutron

3. (d) all of the above

4. (a) deutrons

5. (a) 25% para and 75% ortho

6. (c) D PO

7. (b) heavy water