MCQOPTIONS
Saved Bookmarks
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.
| 201. |
If an apple is taken to the mountain top then its weight is |
| A. | decreased |
| B. | increased |
| C. | constant |
| D. | infinite |
| Answer» B. increased | |
| 202. |
In the gravitational field of the Earth, the gravitational force per unit mass is called the Earth's |
| A. | gravitational field weakness |
| B. | gravitational field strength |
| C. | zero gravitational field |
| D. | altitude |
| Answer» C. zero gravitational field | |
| 203. |
As we go farther away from the Earth, the gravitational force becomes |
| A. | constant |
| B. | stronger |
| C. | weaker |
| D. | positive |
| Answer» D. positive | |
| 204. |
Moon is a |
| A. | natural satellite |
| B. | artificial satellite |
| C. | not a satellite |
| D. | none of above |
| Answer» B. artificial satellite | |
| 205. |
The force with which everybody attracts every other body is called force of |
| A. | friction |
| B. | retarding |
| C. | gravitation |
| D. | acceleration |
| Answer» D. acceleration | |
| 206. |
A wooden cube of sides 10 cm each dipped in water. The up thrust of water would be |
| A. | 20 N |
| B. | 12 N |
| C. | 10 N |
| D. | 15 N |
| Answer» D. 15 N | |
| 207. |
If a 1 m long steel wire having area 5 * 10-5 is stretched through 1 mm by force of 10, 000 N then young modulus of wire is |
| A. | 2 * 1011 N m-2 |
| B. | 3 N m-4 |
| C. | 4 N m-2 |
| D. | 5 N m-2 |
| Answer» B. 3 N m-4 | |
| 208. |
The bubble is stable because the atmospheric pressure inside and outside is |
| A. | equal |
| B. | different |
| C. | lesser |
| D. | more |
| Answer» B. different | |
| 209. |
At a height of about 30 km, the atmospheric pressure becomes |
| A. | 1200 Pa |
| B. | 1000 Pa |
| C. | 1300 Pa |
| D. | 1500 Pa |
| Answer» C. 1300 Pa | |
| 210. |
The unit of strain is |
| A. | newton |
| B. | joule |
| C. | pascal |
| D. | no unit |
| Answer» E. | |
| 211. |
A brick is dropped from the top of a building. If it hits the ground after 6 seconds, the height of the building will be |
| A. | 120 meters |
| B. | 150 meters |
| C. | 110 meters |
| D. | 180 meters |
| Answer» E. | |
| 212. |
A car is moving at a speed of 36 kmh−1. Its speed expresses in ms−1 is |
| A. | 25 ms−1 |
| B. | 10 ms−1 |
| C. | 20 ms−1 |
| D. | 30 ms−1 |
| Answer» C. 20 ms−1 | |
| 213. |
If a body covers equal distance in equal intervals of time then its speed is |
| A. | variable |
| B. | uniform |
| C. | equal |
| D. | constant |
| Answer» C. equal | |
| 214. |
An athlete completes its 200 meter race in 25 seconds. Its average speed will be |
| A. | 6 ms−1 |
| B. | 10 ms−1 |
| C. | 8 ms−1 |
| D. | 5 ms−1 |
| Answer» D. 5 ms−1 | |
| 215. |
If a body covers equal displacement in equal intervals of time however short the interval may be, then it has |
| A. | uniform velocity |
| B. | uniform speed |
| C. | non-uniform speed |
| D. | uniform acceleration |
| Answer» B. uniform speed | |
| 216. |
The amount of heat absorbed by a body depends upon the |
| A. | color of its surface only |
| B. | nature of its surface only |
| C. | mass of its surface |
| D. | color and nature of its surface |
| Answer» E. | |
| 217. |
Heat transfers in |
| A. | 3 ways |
| B. | 2 ways |
| C. | 4 ways |
| D. | 5 ways |
| Answer» B. 2 ways | |
| 218. |
The mode of transfer of heat from one place to another in the form of electromagnetic waves is called |
| A. | fusion |
| B. | convection |
| C. | radiation |
| D. | conduction |
| Answer» D. conduction | |
| 219. |
Carbon dioxide in atmosphere traps the radiation and causes |
| A. | decrease in temperature |
| B. | greenhouse effect |
| C. | depletion of ozone layer |
| D. | formation of ozone layer |
| Answer» C. depletion of ozone layer | |
| 220. |
When temperature of an object is lower than its surroundings then as compare to absorbing, it is radiating |
| A. | more heat |
| B. | less heat |
| C. | equal heat |
| D. | zero heat |
| Answer» C. equal heat | |
| 221. |
The efficiency of the cyclist when he does 12 J of useful work from every 100 J of food energy he takes is |
| A. | 0.13 |
| B. | 0.14 |
| C. | 0.12 |
| D. | 0.15 |
| Answer» D. 0.15 | |
| 222. |
Fossil fuels are usually |
| A. | ethanol |
| B. | mercuries |
| C. | potassium nitrate |
| D. | hydrocarbons |
| Answer» E. | |
| 223. |
(a required form of output/total input energy)×100 is equal to |
| A. | % power |
| B. | % efficiency |
| C. | % stress |
| D. | % strain |
| Answer» C. % stress | |
| 224. |
The energy that causes water to evaporate from the surface to form water vapors is known as |
| A. | electrical energy |
| B. | thermal energy |
| C. | chemical energy |
| D. | heat energy |
| Answer» C. chemical energy | |
| 225. |
Kinetic energy is the energy possessed by a body due to its |
| A. | position |
| B. | nature |
| C. | motion |
| D. | mass |
| Answer» D. mass | |
| 226. |
An body builder does 15 Joules of useful work from every 60 Joules of food energy which he takes. His efficiency will be |
| A. | 0.15 |
| B. | 0.25 |
| C. | 0.3 |
| D. | 0.35 |
| Answer» C. 0.3 | |
| 227. |
1 horse power is equal to |
| A. | 320 W |
| B. | 100 W |
| C. | 1000 W |
| D. | 746 W |
| Answer» E. | |
| 228. |
Electric generators convert mechanical energy into |
| A. | light energy |
| B. | sound energy |
| C. | electrical energy |
| D. | chemical energy |
| Answer» D. chemical energy | |
| 229. |
The work done will be zero if the angle between the force and distance is |
| A. | 30 ° |
| B. | 90 ° |
| C. | 180 ° |
| D. | 60 ° |
| Answer» C. 180 ° | |
| 230. |
The energy that comes from the Sun is called |
| A. | thermal energy |
| B. | chemical energy |
| C. | solar energy |
| D. | nuclear energy |
| Answer» D. nuclear energy | |
| 231. |
A bus weighing 12kN has speed of 20 ms-1. Its kinetic energy is |
| A. | 210 kJ |
| B. | 230 kJ |
| C. | 240 kJ |
| D. | 250 kJ |
| Answer» D. 250 kJ | |
| 232. |
A force of 250 N acts on a body of mass 30 kg. If velocity is 50 ms-1. The distance will be |
| A. | 200 m |
| B. | 120 m |
| C. | 100 m |
| D. | 130 m |
| Answer» D. 130 m | |
| 233. |
The direction of work done in the direction of |
| A. | friction |
| B. | resistive force |
| C. | applied force |
| D. | acceleration |
| Answer» D. acceleration | |
| 234. |
When angle between force and displacement is 90 ° then work done is |
| A. | 0 J |
| B. | 1 J |
| C. | 10 J |
| D. | 50 J |
| Answer» B. 1 J | |
| 235. |
A worker takes 80 seconds in lifting a load of 200 N through a height of 10 m. His power will be |
| A. | 10 watts |
| B. | 25 watts |
| C. | 35 watts |
| D. | 50 watts |
| Answer» C. 35 watts | |
| 236. |
When we raised up a hammer, the energy possessed is called |
| A. | kinetic energy |
| B. | chemical energy |
| C. | nuclear energy |
| D. | potential energy |
| Answer» E. | |
| 237. |
A solar heating system consists of |
| A. | a collector |
| B. | a storage device |
| C. | a distribution system |
| D. | all of above |
| Answer» E. | |
| 238. |
If the velocity of a body becomes double, then its kinetic energy will |
| A. | remain the same |
| B. | become half |
| C. | become four times |
| D. | become double |
| Answer» D. become double | |
| 239. |
A body of mass 35 kg is raised to a height of 4 m. If g = 10 ms-2, its potential energy will be |
| A. | 1400 J |
| B. | 1500 J |
| C. | 1300 J |
| D. | 1600 J |
| Answer» B. 1500 J | |
| 240. |
Mechanical energy possessed by a body is of |
| A. | 3 types |
| B. | 2 types |
| C. | 4 types |
| D. | 5 types |
| Answer» C. 4 types | |
| 241. |
A metal box of mass 400 kg strikes the ground with the velocity of 30 ms-1. The kinetic energy will be |
| A. | 180 J |
| B. | 150 J |
| C. | 120 J |
| D. | 140 J |
| Answer» B. 150 J | |
| 242. |
The energy use in solar cookers, solar distillation plants, solar power plants is known as |
| A. | chemical energy |
| B. | solar energy |
| C. | thermal energy |
| D. | nuclear energy |
| Answer» C. thermal energy | |
| 243. |
If a pump can lift 200 kg of water through a height of 6 m in 10 seconds, then its power is |
| A. | 1100 watts |
| B. | 1000 watts |
| C. | 1300 watts |
| D. | 1200 watts |
| Answer» E. | |
| 244. |
A temperature rise in the environment that disturbs life is called |
| A. | water pollution |
| B. | nuclear pollution |
| C. | thermal pollution |
| D. | traffic pollution |
| Answer» D. traffic pollution | |
| 245. |
Plant or animal wastes that can be burnt as fuel is called |
| A. | biomass |
| B. | biochemical |
| C. | magma |
| D. | bimetallic |
| Answer» B. biochemical | |
| 246. |
The energy stored in coal is |
| A. | kinetic energy |
| B. | potential energy |
| C. | chemical energy |
| D. | nuclear energy |
| Answer» D. nuclear energy | |
| 247. |
In screw gauge, the distance between consecutive threads on the spindle is |
| A. | 0.5 mm |
| B. | 0.01 mm |
| C. | 0.1 mm |
| D. | 1 mm |
| Answer» E. | |
| 248. |
The prefix for 4800000 W is |
| A. | 48 kW |
| B. | 480 kW |
| C. | 48 W |
| D. | 4800 kW |
| Answer» E. | |
| 249. |
An instrument used to measure small lengths such as internal or external diameter or length of a cylinder, etc. is called |
| A. | Vernier calipers |
| B. | physical balance |
| C. | screw gauge |
| D. | stop watch |
| Answer» B. physical balance | |
| 250. |
An interval of 300µs is equal to |
| A. | 0.3 s |
| B. | 3 × 10-4 s |
| C. | 3 × 10-6 s |
| D. | 0.03 s |
| Answer» C. 3 × 10-6 s | |