Atomic and Nuclear Physics Test 01
Total Questions: 23
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A ) atomic mass ✅
B ) atomic number
C ) number of protons
D ) number of electrons
A ) 92
B ) 146 ✅
C ) 238
D ) 330
A ) a beta particle
B ) a gamma ray ✅
C ) an alpha particle
D ) all have the same penetrating ability
A ) increases by 1
B ) stays the same
C ) decreases by 2 ✅
D ) decreases by 1
A ) One half
B ) One quarter ✅
C ) One eighth
D ) none of these
A ) 89 protons
B ) 90 protons
C ) 91 protons
D ) 93 protons ✅
A ) nuclear fission
B ) nuclear fusion ✅
C ) burning of gases
D ) chemical reaction
A ) release nuclear energy ✅
B ) absorb nuclear energy
C ) release chemical energy
D ) absorb chemical energy
A ) Plants and animals are such strong emitters of carbon 14.
B ) After a plant or animal dies, it stops taking in fresh carbon – 14. ✅
C ) There is so much non–radioactive carbon dioxide in the air.
D ) When a plant or animal dies, they absorb fresh C-14.
A ) 10 million K
B ) 20 million K ✅
C ) 30 million K
D ) 35 million K
A ) 10 hour
B ) 10.10 hours
C ) 10.6 hours ✅
D ) 1 year
A ) 5730 years ✅
B ) 5740 years
C ) 5750 years
D ) 5760 years
A ) 6.7 x 10¹¹ J ✅
B ) 6 x 10⁷J
C ) 67 J
D ) 7 J
A ) 36 × 10⁸J
B ) 3.6 ×10¹⁰J ✅
C ) 36J
D ) 36 × 10¹⁰J
A ) 1936
B ) 1937
C ) 1938
D ) 1939 ✅
A ) Cobalt -60
B ) Ph-32
C ) carbon -14 ✅
D ) carbon 20
Explanation:
- Radioactivity was discovered by Becquerel.
- Radioactivity emerges from: Nuclear energy.
- Radioactivity is measured by which device Geiger counter.
- Thorium metal is not only magnetic but also radioactive Radioactive element are Plutonium, Thorium, Uranium.
- Alpha rays is a positively charged particle emitted by a radioactive element.
- A negatively charged particle emitted by a radioactive element during radioactive decay is called a Beta particle.
- Radioactive isotopes are used in medicine for both diagnostic imaging and treatment.
- A 100 g sample of a radioactive element has a half life of 5 days. 12.5grams of radioactive material will remain after 15 days.
- Radioactive elements have atomic number greater than82.
- Weak Nuclear Force is responsible for the radioactive decay of the nucleus.
- The radioactive material must be placed in a box of Lead.
- Radioactive cobalt 60 is used for curing: Cancerous cells.
- Radioactive isotope present in atmosphere is: carbon -14.
- Unstable nuclei are radioactive.When radioactivity rays are passed through air or any gas, they cause it to Ionize.
A ) 1-131
B ) P-32 ✅
C ) Co-60
D ) Ar-40
A ) 1600 years
B ) 1610 years
C ) 1620 years ✅
D ) 1630 years
A ) 1896 ✅
B ) 1895
C ) 1897
D ) 1898
A ) 4 rem
B ) 5 rem ✅
C ) 3 rem
D ) 6 rem
A ) 2× 10⁸ years
B ) 2.2 ×10⁸ years
C ) 2.4 × 10⁸ years ✅
D ) 2.8 × 10⁸ years
A ) 2.00 years
B ) 2.35 years
C ) 2.79 years
D ) 2.85 years ✅
A ) 10 years
B ) 20 years
C ) 30 years ✅
D ) 40 years