| 1 |
Which one of the following is crystalline solid. |
- A. Zirconia
- B. Glassy solid
- C. Natural rubber
- D. Poly strene
|
| 2 |
A cable breaks if stretched by more than 2mm. It is cut into two equal parts. How much either part can be stretched without breaking? |
- A. 25 m
- B. 1mm
- C. 2mm
- D. 0.5 m
|
| 3 |
Insulators have: |
- A. An empty conduction band
- B. Al full valence band
- C. A large energy gap
- D. All of above
|
| 4 |
The material whose resistivity becomes zero below a certain temperature |
- A. Conductors
- B. Semi conductors
- C. Super conductors
- D. Insulators
|
| 5 |
Which of the modulus of elasticity is involved in compressing a rod to decrease its length ? |
- A. Young's modulus
- B. Bulk modulus
- C. Modulus of elasticity
- D. None of these
|
| 6 |
Very weak magnetic field produced by brain can be detected by |
- A. MRI
- B. CAT scans
- C. Squid
- D. CRO
|
| 7 |
The first superconductor was discovered in: |
- A. 1831
- B. 1911
- C. 1921
- D. 1876
|
| 8 |
Which of the modulus of elasticity is involved in compressing a rod to decrease its length ? |
- A. Young's modulus
- B. Bulk modulus
- C. Modulus of elasticity
- D. None of these
|
| 9 |
At 0 K a piece of silicon is a |
- A. Conductor
- B. Semi-conductor
- C. Insulator
- D. All
|
| 10 |
The ability of a body to return to its original shape is called. |
- A. Strain
- B. Stress
- C. Elasticity
- D. Plasticity
|