| 1 |
Which one box is used to keep food hot and ice cream cold for long period? |
- A. Iron box
- B. Aluminium Box
- C. Styrofoam box
- D. Plastic box
|
| 2 |
More radiation is reflected by the surface: |
- A. White
- B. Coloured
- C. Black
- D. Rough
|
| 3 |
The example of bad conductor is: |
- A. Wool
- B. Copper
- C. Gold
- D. Iron
|
| 4 |
The direction of momentum is |
- A. opposite to motion
- B. Along the velocity
- C. Perpendicular to motion
- D. None of these
|
| 5 |
If the mass of moving body in a circle is doubled then centripetal force wil be: |
- A. Doubled
- B. Half
- C. 4 times
- D. Same
|
| 6 |
What flower is known as natural thermometer? |
- A. Rose
- B. Barasicca
- C. Crocus
- D. Tulip
|
| 7 |
The insulator of heat is: |
- A. Cork
- B. Cotton
- C. Wood
- D. All
|
| 8 |
The least count of vernier callipers is. |
- A. .01 mm
- B. 0.1 mm
- C. .001 mm
- D. .01 m
|
| 9 |
Kilowatt - hour is unit of _____________ |
- A. Power
- B. Energy
- C. Work
- D. K.e
|
| 10 |
Heat radiation obey the laws of: |
- A. Absorption
- B. Reflection
- C. Both A and B
- D. None
|