| 1 |
<p class="MsoNormal">The value or current I passing through a conductor is
inversely proportional to:<o:p></o:p></p> |
- A. <p class="MsoNormal">Temperature<o:p></o:p></p>
- B. <p class="MsoNormal">Potential difference<o:p></o:p></p>
- C. <p class="MsoNormal">e.m.f.<o:p></o:p></p>
- D. <p class="MsoNormal">resistance<o:p></o:p></p>
|
| 2 |
<p class="MsoNormal">By keeping resistance constant if we double the voltage then
current will be:<o:p></o:p></p> |
- A. <p class="MsoNormal">Double<o:p></o:p></p>
- B. <p class="MsoNormal">4 times<o:p></o:p></p>
- C. <p class="MsoNormal">¼ times<o:p></o:p></p>
- D. <p class="MsoNormal">Half<o:p></o:p></p>
|
| 3 |
Which element is used to locate the ulcer in brain? |
- A. Iodine-131
- B. Phosphorus-32
- C. Carbon-14
- D. Potassium-40
|
| 4 |
Which among the following radiation has more penetrating power? |
- A. A beta pareticle
- B. A gamma particle
- C. An alpha particle
- D. None of these
|
| 5 |
When 1 kg of Uranium -235 is fused then energy released is |
- A. 67 x 10<sup>10</sup> J
- B. 67 x 10<sup>7</sup>J
- C. 67 J
- D. 7 J
|
| 6 |
The half life of Lead Pb is |
- A. 10 hour
- B. 10.10 hours
- C. 10.6 hours
- D. 1 year
|
| 7 |
The reason carbon dating work is that. |
- A. Plants and animals are such strong emitters of carbon 14
- B. After a plant or animal dies, it stops in fresh carbon
- C. There is so much non radioactive carbon dioxide in the air
- D. When a plant or animal dies.
|
| 8 |
The half life of plutonium<sup> 236</sup>Pu<sub>94 </sub>is: |
- A. 2.00 years
- B. 2.35 years
- C. 2.79 years
- D. 2.85 years
|
| 9 |
Release of energy by the sun is due to |
- A. Nuclear fission
- B. Nuclear fusion
- C. Burning of gases
- D. Chemical reaction
|
| 10 |
One of the isotopes of uranium is<sup> 238</sup>U<sub>92</sub>the number of neutrons in the isotopes is. |
- A. 92
- B. 146
- C. 238
- D. 330
|
