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MCQOPTIONS
This section includes 2268 Mcqs, each offering curated multiple-choice questions to sharpen your Grade7 knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
The symbol of 'sulphur' is |
| A. | Fe |
| B. | Su |
| C. | S |
| D. | Ti |
| Answer» D. Ti | |
| 1202. |
To make flexible items a substance is added to PVC. This substance is known as |
| A. | ester |
| B. | ketone |
| C. | halo alkane |
| D. | plasticizer |
| Answer» E. | |
| 1203. |
'Ethene' is composed of |
| A. | two carbon and three hydrogen atoms |
| B. | one carbon and one hydrogen atom |
| C. | two carbon and four hydrogen atoms |
| D. | three carbon and six hydrogen atoms |
| Answer» D. three carbon and six hydrogen atoms | |
| 1204. |
'Ethene' is a also known as |
| A. | ethane |
| B. | methane |
| C. | ethylene |
| D. | bromothane |
| Answer» D. bromothane | |
| 1205. |
Solids that flow like liquids are |
| A. | glass |
| B. | plastic |
| C. | gel |
| D. | all of above |
| Answer» B. plastic | |
| 1206. |
The strongest force of attraction is found in |
| A. | fluids |
| B. | liquids |
| C. | gases |
| D. | solids |
| Answer» E. | |
| 1207. |
Particles are packed closely and tightly in |
| A. | solids |
| B. | semi solids |
| C. | liquids |
| D. | gases |
| Answer» B. semi solids | |
| 1208. |
The moon which appears, after disappearance on completion of lunar month is called |
| A. | half moon |
| B. | full moon |
| C. | new moon |
| D. | crescent |
| Answer» D. crescent | |
| 1209. |
The heavenly bodies which revolve around the sun are called |
| A. | asteroids |
| B. | planets |
| C. | stars |
| D. | galaxies |
| Answer» C. stars | |
| 1210. |
A system which is made up of planets, asteroids and other objects orbitting the sun, is known as |
| A. | lunar system |
| B. | space |
| C. | solar system |
| D. | galaxy |
| Answer» D. galaxy | |
| 1211. |
When sun is entirely or partially blocked out by moon, it is termed as |
| A. | solar eclipse |
| B. | lunar eclipse |
| C. | regular eclipse |
| D. | irregular eclipse |
| Answer» B. lunar eclipse | |
| 1212. |
The objects which give out light are called |
| A. | luminous objects |
| B. | non luminous objects |
| C. | super luminous |
| D. | luminous space |
| Answer» B. non luminous objects | |
| 1213. |
The atmosphere of earth is very rich in |
| A. | nitrogen |
| B. | oxygen |
| C. | ozone |
| D. | both a and b |
| Answer» E. | |
| 1214. |
The moonlight is a reflected light of |
| A. | stars |
| B. | galaxy |
| C. | sun |
| D. | moon |
| Answer» D. moon | |
| 1215. |
The optical instruments that are used to explore and observe celestial objects include |
| A. | binoculars |
| B. | artificial satellites |
| C. | space probes |
| D. | all of above |
| Answer» E. | |
| 1216. |
A huge mass of very hot gases is called |
| A. | stars |
| B. | planets |
| C. | asteroid |
| D. | meteorite |
| Answer» B. planets | |
| 1217. |
The hemisphere of earth faced towards sun, experiences |
| A. | day |
| B. | night |
| C. | noon |
| D. | evening |
| Answer» B. night | |
| 1218. |
Jupiter, Saturn, Uranus and Neptune are regarded as |
| A. | inner planets |
| B. | outer planets |
| C. | bigger planets |
| D. | smaller planets |
| Answer» C. bigger planets | |
| 1219. |
The unmanned space crafts which are used to explore celestial bodies are called |
| A. | satellites |
| B. | rockets |
| C. | thunder aircraft |
| D. | Robotic space |
| Answer» E. | |
| 1220. |
At poles sun does not rise or set for about |
| A. | a year |
| B. | half a year |
| C. | one month |
| D. | two years |
| Answer» C. one month | |
| 1221. |
The natural satellites of a planet is |
| A. | moon |
| B. | sun |
| C. | spacecraft |
| D. | hover craft |
| Answer» B. sun | |
| 1222. |
Eclipses do not occur every month because the orbit of moon is |
| A. | round |
| B. | tilted |
| C. | straight |
| D. | angled |
| Answer» C. straight | |
| 1223. |
"The percentage of total mass of sun" as compare to "the total mass of solar system" is |
| A. | 0.99 |
| B. | 0.45 |
| C. | 0.9 |
| D. | 0.1 |
| Answer» B. 0.45 | |
| 1224. |
A greenhouse gas is |
| A. | nitrogen |
| B. | oxygen |
| C. | carbon dioxide |
| D. | helium |
| Answer» D. helium | |
| 1225. |
The average temperature of earth is |
| A. | 15 °C |
| B. | 25 °C |
| C. | 75 °C |
| D. | 45 °C |
| Answer» B. 25 °C | |
| 1226. |
The planet which is the nearest to sun is |
| A. | Mercury |
| B. | Venus |
| C. | Earth |
| D. | Mars |
| Answer» B. Venus | |
| 1227. |
The huge rocks which revolve around a star are called |
| A. | meteorites |
| B. | asteroids |
| C. | stars |
| D. | meteors |
| Answer» C. stars | |
| 1228. |
The photographs taken by the device "Thermograph" are known as |
| A. | thermal photos |
| B. | heat graphical pictures |
| C. | thermograms |
| D. | all of above |
| Answer» D. all of above | |
| 1229. |
In medicine thermograph is used to |
| A. | identify bacteria |
| B. | identify infected tissues |
| C. | kill infected cells |
| D. | identify damaged parts of an organ |
| Answer» C. kill infected cells | |
| 1230. |
An instrument that measures how much hot or cold an object is, is known as |
| A. | barometer |
| B. | thermometer |
| C. | galvanometer |
| D. | ohm-meter |
| Answer» C. galvanometer | |
| 1231. |
Sun emits |
| A. | low ultraviolet rays |
| B. | high ultraviolet rays |
| C. | low infrared waves |
| D. | high infrared waves |
| Answer» E. | |
| 1232. |
Heat is a form of |
| A. | energy |
| B. | force |
| C. | power |
| D. | resistance |
| Answer» B. force | |
| 1233. |
Heat doesn't flow through |
| A. | wind |
| B. | air |
| C. | vacuum |
| D. | energy |
| Answer» C. vacuum | |
| 1234. |
'Air' is |
| A. | thermal conductor |
| B. | thermal insulator |
| C. | electrical conductor |
| D. | an electrolyte |
| Answer» C. electrical conductor | |
| 1235. |
The objects those are warmer than their surroundings |
| A. | gain heat |
| B. | lose heat |
| C. | transfer heat |
| D. | share heat |
| Answer» C. transfer heat | |
| 1236. |
In hot countries, most of the buildings are painted with |
| A. | white color |
| B. | black color |
| C. | blue color |
| D. | brown color |
| Answer» B. black color | |
| 1237. |
Birds trap air between the spaces of their feathers because they are |
| A. | thermal conductor |
| B. | thermal insulator |
| C. | electrical conductor |
| D. | electricical insulator |
| Answer» C. electrical conductor | |
| 1238. |
In a thermograph, heat is identified by |
| A. | different sizes of lines on a photograph |
| B. | different shapes on a photograph |
| C. | different colors on a photograph |
| D. | different images on a photograph |
| Answer» D. different images on a photograph | |
| 1239. |
In cold climates, building gets cold because of excessive escape of |
| A. | heat |
| B. | radiations |
| C. | waves |
| D. | rays |
| Answer» B. radiations | |
| 1240. |
'Thermos' is also known as |
| A. | temperature flask |
| B. | heat flask |
| C. | thermal flask |
| D. | vacuum flask |
| Answer» E. | |
| 1241. |
Trees help in making environment |
| A. | cool |
| B. | warm |
| C. | hot |
| D. | clean |
| Answer» B. warm | |
| 1242. |
Infected tissues are mostly |
| A. | warmer than normal ones |
| B. | cooler than normal ones |
| C. | big in size |
| D. | irregular in shape |
| Answer» B. cooler than normal ones | |
| 1243. |
A hot object emits thermal energy in the form of |
| A. | waves |
| B. | rays |
| C. | energy |
| D. | radiations |
| Answer» E. | |
| 1244. |
In common use, thermal imaging cameras can |
| A. | identify temperature of roads |
| B. | identify heat distribution in buildings |
| C. | cool down the temperature of roads |
| D. | identify the heat released by each car |
| Answer» C. cool down the temperature of roads | |
| 1245. |
Heat is not allowed to pass through by a |
| A. | metalloids |
| B. | transition metals |
| C. | non metals |
| D. | metals |
| Answer» D. metals | |
| 1246. |
An example of good insulator of heat is |
| A. | iron |
| B. | wood |
| C. | gold |
| D. | zinc |
| Answer» C. gold | |
| 1247. |
One of the medical use of thermal imaging cameras is that, they can |
| A. | identify cancer cells deep in the body |
| B. | identify bacteria in the vessels |
| C. | identify viruses in skin tissues |
| D. | identify diseases of heart |
| Answer» B. identify bacteria in the vessels | |
| 1248. |
To date, the most common type of galaxies found in universe, are |
| A. | spiral galaxy |
| B. | elliptical galaxy |
| C. | peculiar galaxy |
| D. | none of above |
| Answer» C. peculiar galaxy | |
| 1249. |
After the drainage of center, the sun will start to |
| A. | cool down |
| B. | heat up |
| C. | grow bigger |
| D. | shrink |
| Answer» B. heat up | |
| 1250. |
If a large star with a mass more than that of sun dies, its core collapses so quickly that it could |
| A. | explode |
| B. | vanish |
| C. | form a new star |
| D. | form a galaxy due to explosion |
| Answer» B. vanish | |