| 1 |
The process in which heat is transfer due to actual movement of molecule is called. |
- A. Conduction
- B. radiation
- C. Convection
- D. All of these
|
| 2 |
Which of the following is a good radiator of heat? |
- A. A shining slivered surface
- B. A dull black surface
- C. A white surface
- D. A green coloured surfaced
|
| 3 |
Anything kept in thermos : |
- A. In temperature remain constant
- B. Its temperature decrease
- C. Its temperature increase
- D. None of these
|
| 4 |
The mathematical formula of thermal conductivity is |
- A. k =Q/t x L/A (T1 - T2)
- B. k =Q/t x L/A (T1 + T2)
- C. k =t/Q x L/A (T1 - T2)
- D. k =2Q/t x L/A (T1 + T2)
|
| 5 |
In thermo flask radiation is stopped by using : |
- A. Green color
- B. Transparent
- C. Silver color
- D. Nil
|
| 6 |
The bad conductor of heat is: |
- A. Iron
- B. Copper
- C. Air
- D. Aluminum
|
| 7 |
Heat is an important form of |
- A. Matter
- B. Energy
- C. Wind
- D. Force
|
| 8 |
In large building central heating system worms on the principle of |
- A. conduction
- B. convection
- C. radiation
- D. waves
|
| 9 |
Both metals and non-metals transfer: |
- A. Electricity
- B. Heat
- C. Both A and B
- D. None of these
|
| 10 |
What of the following is a god radiator of heat? |
- A. a Shinning silvered surface
- B. a dull black surface
- C. a white black surface
- D. a shinning colored surface
|
