| 1 |
Which of the following is a natural fiber: |
- A. Teflon
- B. Cotton
- C. Acrylic
- D. Nylon
|
| 2 |
The rays which are liberated from metal due to collision of fast moving electrons: |
- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. x - rays
|
| 3 |
Element having atomic numebr greater than.......... go on emitting radiations. |
|
| 4 |
The Phenomenon of emission of radiations from radioactive elements is called: |
- A. Doping
- B. Allotropy
- C. Radioactivity
- D. Induction
|
| 5 |
Emission of ratiations from nucleus is said to be |
- A. Chemical reaction
- B. Atomic reaction
- C. Radioactivity
- D. Nuclear fission
|
| 6 |
Frequency of ultrasound is. |
- A. Less than 20 Hz
- B. 20 KHz
- C. 30 KHz
- D. More than 20 khn
|
| 7 |
What discovered radioactivity? |
- A. Einstein
- B. Newton
- C. J.J. Thomson
- D. Henry Becquerel
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| 8 |
When a ray of light passes from a denser to a rare medium it; |
- A. bends away form the normal to the interface
- B. bends towards the normal
- C. does no bend
- D. non of the above
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| 9 |
The process of manufacturing food in pants; |
- A. Respiration
- B. Digestion
- C. Fermentation
- D. Photosynthesis
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| 10 |
In engineering department besides heavy machinery the role of ....... industry is examplary. |
- A. Cottage
- B. Steel
- C. Electrical
- D. Paper
|