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MCQOPTIONS
This section includes 760 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
To push the ground backwards and walk, the force needed is |
| A. | gravitational force |
| B. | friction |
| C. | retarding force |
| D. | resultant force |
| Answer» C. retarding force | |
| 152. |
If zero line of Vernier scale is on the right of zero line of main scale the zero error is |
| A. | zero |
| B. | positive |
| C. | negative |
| D. | neutral |
| Answer» C. negative | |
| 153. |
Digital stop watches have least count upto |
| A. | 0.1 seconds |
| B. | 0.01 seconds |
| C. | 0.5 seconds |
| D. | 0.9 seconds |
| Answer» C. 0.5 seconds | |
| 154. |
Mechanical stop watches have least count upto |
| A. | 0.1 seconds |
| B. | 0.01 seconds |
| C. | 0.5 seconds |
| D. | 0.9 seconds |
| Answer» B. 0.01 seconds | |
| 155. |
1.35 can be rounded to |
| A. | 1.5 |
| B. | 1.3 |
| C. | 1.4 |
| D. | 1.6 |
| Answer» D. 1.6 | |
| 156. |
The study of the properties and behavior of nuclei and the particles within the nuclei is called |
| A. | mechanics |
| B. | plasma physics |
| C. | nuclear physics |
| D. | atomic physics |
| Answer» D. atomic physics | |
| 157. |
A boat of 8 meters and 40 meter long floats on water. If 125000 N of cargo is added, it will sink |
| A. | 10 cm |
| B. | 4 cm |
| C. | 15 cm |
| D. | 20 cm |
| Answer» C. 15 cm | |
| 158. |
The force acting on the unit area on the surface is called |
| A. | strain |
| B. | pressure |
| C. | stress |
| D. | density |
| Answer» D. density | |
| 159. |
(Density/mass) is equal to |
| A. | power |
| B. | area |
| C. | energy |
| D. | volume |
| Answer» E. | |
| 160. |
The Earth is surrounded by a cover of air called |
| A. | gravity |
| B. | energy |
| C. | ozone |
| D. | atmosphere |
| Answer» E. | |
| 161. |
The property of a body to restore its original size and shape as the deforming force ceases to act is called |
| A. | energy |
| B. | floating |
| C. | elasticity |
| D. | density |
| Answer» D. density | |
| 162. |
In terms of velocity, the symbol vi is used for |
| A. | initial velocity |
| B. | negative velocity |
| C. | total velocity |
| D. | final velocity |
| Answer» B. negative velocity | |
| 163. |
If a car is moving at a velocity of 30 ms−-1 then slows down uniformly to 20ms−1 in 6s. Its retardation will be |
| A. | 5 ms−2 |
| B. | 2.33 ms−2 |
| C. | 1.67 ms−2 |
| D. | 4 ms−2 |
| Answer» D. 4 ms−2 | |
| 164. |
If the velocity of a body increases with time, then its acceleration is |
| A. | zero |
| B. | positive |
| C. | negative |
| D. | neutral |
| Answer» D. neutral | |
| 165. |
A passenger John is sitting in a moving car, so with respect to other passengers he is at |
| A. | rest |
| B. | motion |
| C. | displacement |
| D. | position |
| Answer» B. motion | |
| 166. |
The rate of change of velocity of a body is called its |
| A. | displacement |
| B. | acceleration |
| C. | speed |
| D. | distance |
| Answer» C. speed | |
| 167. |
When the liquid is heated there is change in volume of |
| A. | liquid only |
| B. | container only |
| C. | air |
| D. | liquid and container |
| Answer» E. | |
| 168. |
Kinetic energy of an atom or molecule is due to its motion which depends upon the |
| A. | size |
| B. | temperature |
| C. | location |
| D. | surface area |
| Answer» C. location | |
| 169. |
A thermometric liquid's boiling point should be |
| A. | low |
| B. | high |
| C. | same |
| D. | constant |
| Answer» C. same | |
| 170. |
Degree of hotness and coldness of a body is called |
| A. | heat |
| B. | temperature |
| C. | density |
| D. | coldness |
| Answer» C. density | |
| 171. |
Quantities on basis of which other ones are expressed are called |
| A. | derived quantities |
| B. | physical quantities |
| C. | base quantities |
| D. | scalar quantities |
| Answer» D. scalar quantities | |
| 172. |
Derived quantities can be expressed in form of |
| A. | base quantities |
| B. | physical quantities |
| C. | non measurable quantities |
| D. | all of above |
| Answer» B. physical quantities | |
| 173. |
In laboratories, a one meter long tool to measure length of an object or distance between two points is called |
| A. | physical balance |
| B. | screw gauge |
| C. | Vernier calipers |
| D. | meter rule |
| Answer» E. | |
| 174. |
Volume, area, speed, electric charge, force and work are the examples of |
| A. | quartile quantities |
| B. | base quantities |
| C. | derived quantities |
| D. | prefixes |
| Answer» D. prefixes | |
| 175. |
By converting 30,000 grams into kilograms, we get |
| A. | 30 kg |
| B. | 3 kg |
| C. | 300 kg |
| D. | 0.3 kg |
| Answer» B. 3 kg | |
| 176. |
The highly conducting state of matter is |
| A. | plasma |
| B. | solid |
| C. | liquid |
| D. | gas |
| Answer» B. solid | |
| 177. |
They have no fixed shape or volume |
| A. | solids |
| B. | liquids |
| C. | gases |
| D. | all of above |
| Answer» D. all of above | |
| 178. |
At an altitude where there is no air, the atmospheric pressure would be |
| A. | high |
| B. | low |
| C. | zero |
| D. | double |
| Answer» D. double | |
| 179. |
Most of the matter that fills the universe is in plasma state |
| A. | gas state |
| B. | liquid state |
| C. | plasma state |
| D. | solid state |
| Answer» D. solid state | |
| 180. |
The up thrust of the body is equal to the |
| A. | weight of liquid |
| B. | mass of liquid |
| C. | weight of liquid displaced |
| D. | density of liquid |
| Answer» D. density of liquid | |
| 181. |
As we gain altitude the density of air |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | none of above |
| Answer» C. remains constant | |
| 182. |
A body is permanently deformed and is unable to restore its original state after stress is removed, when a stress crosses |
| A. | elastic limit |
| B. | tensile limit |
| C. | strain limit |
| D. | pressure limit |
| Answer» B. tensile limit | |
| 183. |
1 newton per meter square (Nm-2) is equal to |
| A. | 1 Pa |
| B. | 1 kg |
| C. | 1 N |
| D. | 1 J |
| Answer» B. 1 kg | |
| 184. |
The applied force that changes shape, volume or length of a substance is called |
| A. | gravitational force |
| B. | potential force |
| C. | kinetic force |
| D. | deforming force |
| Answer» E. | |
| 185. |
In solids, the molecules are held together by |
| A. | strong force of attraction |
| B. | weak force of attraction |
| C. | zero force of attraction |
| D. | none of above |
| Answer» C. zero force of attraction | |
| 186. |
If the density of air is 1.3 kgm-3. The mass of air in a room measuring 8m×5m×4m is |
| A. | 210 kg |
| B. | 208 kg |
| C. | 215 kg |
| D. | 220 kg |
| Answer» C. 215 kg | |
| 187. |
A gradual large increase in the atmospheric pressure predicts |
| A. | intense weather condition |
| B. | no change in weather |
| C. | long spell of pleasant weather |
| D. | none of above |
| Answer» D. none of above | |
| 188. |
The density of air in the atmosphere is |
| A. | uniform |
| B. | not uniform |
| C. | zero |
| D. | none of above |
| Answer» C. zero | |
| 189. |
The ionic state of matter in which the electrons of atom become positive ions is called as |
| A. | gas |
| B. | plasma |
| C. | solid |
| D. | liquid |
| Answer» C. solid | |
| 190. |
The density of 500 g of stone when its volume is 200 cm-3 is |
| A. | 2.5 g cm-3 |
| B. | 2.3 g cm-3 |
| C. | 2.5 g cm-2 |
| D. | 2.6 g cm-3 |
| Answer» B. 2.3 g cm-3 | |
| 191. |
Pressure is a |
| A. | vector quantity |
| B. | scalar quantity |
| C. | base quantity |
| D. | all of above |
| Answer» C. base quantity | |
| 192. |
At sea level the atmospheric pressure is equal to |
| A. | 1 Pa |
| B. | 1000 Pa |
| C. | 101, 300 Pa |
| D. | 2000 Pa |
| Answer» D. 2000 Pa | |
| 193. |
The density of water is |
| A. | 100 kgm-3 |
| B. | 10 kgm-3 |
| C. | 1000 kgm-3 |
| D. | 2000 kgm-3 |
| Answer» D. 2000 kgm-3 | |
| 194. |
The density of 5 lit of water having mass 5 kg is |
| A. | 100 kg m-3 |
| B. | 500 kg m-3 |
| C. | 750 kg m-3 |
| D. | 1000 kg m-3 |
| Answer» E. | |
| 195. |
The hydraulic press works on the principle of |
| A. | Newton's law |
| B. | Avogadro's law |
| C. | Pascal's law |
| D. | Charles's Law |
| Answer» D. Charles's Law | |
| 196. |
In order to make an object float, its weight should be equal to |
| A. | atmospheric pressure |
| B. | up thrust acting on it |
| C. | density |
| D. | weight of liquid |
| Answer» C. density | |
| 197. |
When an object is totally or partially immersed in a liquid, an up thrust acts on it equal to the weight of the liquid it displaces. This statement is called |
| A. | Newton's principle |
| B. | Archimedes principle |
| C. | Einstein principle |
| D. | Pascal's principle |
| Answer» C. Einstein principle | |
| 198. |
The approximate length of a glass tube to construct a water barometer should be |
| A. | 0.5 m |
| B. | 1 m |
| C. | 11 m |
| D. | 5 m |
| Answer» D. 5 m | |
| 199. |
The object will sink if its weight is |
| A. | greater than up thrust on it |
| B. | less than up thrust acting on it |
| C. | equal to up thrust acting on it |
| D. | all of above |
| Answer» B. less than up thrust acting on it | |
| 200. |
The molecules of matter are |
| A. | continuously vibrating |
| B. | remains stationary |
| C. | can travel long distances |
| D. | cannot overcome attractive forces |
| Answer» B. remains stationary | |