| 1 |
SI unit of time is. |
- A. S
- B. min
- C. hr
- D. all above
|
| 2 |
The part of the heart which receives blood from lungs. |
- A. Left atrium
- B. Right atrium
- C. Left ventricle
- D. Right ventricle
|
| 3 |
Amount of solute required to saturae 100 g of solvent at a particular temperatur eis called. |
- A. Molarity
- B. Molality
- C. Solubility
- D. Normality
|
| 4 |
The force between two negatively charged particles is. |
- A. Gravitational
- B. Frictional
- C. Repulsion
- D. Attraction
|
| 5 |
The thin transparent membrane around heart is called. |
- A. Pericardium
- B. Atria
- C. Veins
- D. Ventricle
|
| 6 |
Which of the following is the major cause of tides. |
- A. Heating oceans by the Sun
- B. Changein the wind direction
- C. Gravitaational pull of the Moon
- D. Earthquakes on the surface of the ocean floor.
|
| 7 |
Atomic number of element presetnin period 2 and group 15 of the periodic table. |
|
| 8 |
The degreee of hotness or coldness is called. |
- A. Thermal contrction
- B. Heat
- C. Thermal Expansion
- D. Temperature
|
| 9 |
A piece of iron is kept in open air for 5 days. A film of corrosion formed over it is. |
- A. Iron oxide
- B. Iron sulphide
- C. Iron Chloride
- D. Iron Hydride
|
| 10 |
Area around nucleus where electrons are found are called. |
- A. Orbit
- B. Shell
- C. Both a and b
- D. None of these
|