| 1. | Which of the following laws is associated with the heating effect of electric current ? | |
|
Joule's law
|
||
|
Ohm's law
|
||
|
Faraday's law
|
||
|
Newton's law
|
||
View Answer
Discuss in Forum
Report Question| 2. | The value of acceleration due to gravity ‘g’ depends on: 1. Constant of Gravitation ‘G’ 2. Mass of the earth ‘M’ 3. Mass of the falling object ‘m’ 4. Radius of the earth ‘R’ ? | |
|
a, c, d
|
||
|
b, c, d
|
||
|
a, b, c
|
||
|
a, b, d
|
||
| 3. | Which element in the periodic table forms maximum number of compounds ? | |
|
H
|
||
|
O
|
||
|
S
|
||
|
C
|
||
| 4. | A body at rest can have ? | |
|
Speed
|
||
|
Velocity
|
||
|
Momentum
|
||
|
Energy
|
||
| 5. | A solid metallic hemisphere with radius r is melted and cast into a solid right circular cone with the radius of the base = r. What is the ratio of their curved surface areas ? | |
|
5/?2
|
||
|
2/?5
|
||
|
3/2
|
||
|
5/2
|
||
| 6. | How much work is done in moving a charge of 5 C across two points having a potential difference of 16 V ? | |
|
65 J
|
||
|
45 J
|
||
|
40 J
|
||
|
80 J
|
||
| 7. | Which of the following statements is true ? | |
|
Carbon monoxide diffuses from lungs into blood and oxygen diffuses from blood into lungs
|
||
|
Carbon dioxide diffuses from lungs into blood and oxygen diffuses from blood into lungs
|
||
|
Oxygen diffuses from lungs into blood and carbon dioxide diffuses from blood into lungs
|
||
|
Oxygen diffuses from lungs into blood and carbon monoxide diffuses from blood into lungs
|
||
| 8. | Mendeleev could not assign a correct position to which of the following elements in his table ? | |
|
Lithium
|
||
|
Potassium
|
||
|
Hydrogen
|
||
|
Helium
|
||
| 9. | The atmospheric pressure at sea level is ........ atm ? | |
|
0.001
|
||
|
1
|
||
|
0
|
||
|
0.1
|
||
| 10. | Who demonstrated that objects of different masses would reach the ground together when dropped from the same height ? | |
|
Isaac Newton
|
||
|
Archimedes
|
||
|
Robert Boyle
|
||
|
Galileo Galilei
|
||