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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.
| 2201. |
Materials that are insulators when cold and conductors when hot are known as |
| A. | semi insulators |
| B. | semi conductors |
| C. | semi electrolytes |
| D. | electrolytes |
| Answer» C. semi electrolytes | |
| 2202. |
The electrons move from |
| A. | positive to negative terminal |
| B. | negative to positive terminal |
| C. | both a and b |
| D. | positive to positive terminal |
| Answer» C. both a and b | |
| 2203. |
On track magnetic levitation trains |
| A. | clip |
| B. | float |
| C. | ride |
| D. | skid |
| Answer» C. ride | |
| 2204. |
In non luminous flame, the air holes in Bunsen burner are |
| A. | open |
| B. | close |
| C. | partially open |
| D. | partially closed |
| Answer» B. close | |
| 2205. |
Types of fuel include |
| A. | kerosene |
| B. | charcoal |
| C. | firewood |
| D. | all of above |
| Answer» E. | |
| 2206. |
The energy of running water is exploited to run turbines in |
| A. | hydroelectric power stations |
| B. | railway stations |
| C. | oceans |
| D. | rural area |
| Answer» B. railway stations | |
| 2207. |
Rubbish is buried underground to produce |
| A. | methane |
| B. | biogas |
| C. | oxygen |
| D. | carbon dioxide |
| Answer» C. oxygen | |
| 2208. |
'Fossils fuel' is regarded as an energy resource which is |
| A. | renewable |
| B. | non renewable |
| C. | generating |
| D. | producing |
| Answer» C. generating | |
| 2209. |
A material which loses electrons, becomes |
| A. | positively charged |
| B. | negatively charged |
| C. | neutral |
| D. | both positively and negatively charged |
| Answer» B. negatively charged | |
| 2210. |
Iron bar is pulled back to its original position by |
| A. | electromagnet |
| B. | magnet |
| C. | electricity |
| D. | spring |
| Answer» E. | |
| 2211. |
If one bulb goes out in parallel circuit, the others will |
| A. | stay on |
| B. | also turn off |
| C. | blow up |
| D. | heat up |
| Answer» B. also turn off | |
| 2212. |
"ELCB" switches off when current in the earth wire is greater than |
| A. | 30 micro ampere |
| B. | 30 nano ampere |
| C. | 30 kilo ampere |
| D. | 30 milli ampere |
| Answer» E. | |
| 2213. |
Resistors can be connected in |
| A. | parallel only |
| B. | series only |
| C. | both parallel and series |
| D. | none of these ways |
| Answer» D. none of these ways | |
| 2214. |
A component which can stick to the magnet is |
| A. | iron |
| B. | sulphur |
| C. | both a and b |
| D. | lead |
| Answer» B. sulphur | |
| 2215. |
A component without which fertilizer is incomplete, is |
| A. | ammonia |
| B. | nitrogen |
| C. | methane |
| D. | ethene |
| Answer» C. methane | |
| 2216. |
Physical change only effects the |
| A. | arrangement of particles |
| B. | energy of particles |
| C. | arrangement and energy of particles |
| D. | size of particles |
| Answer» D. size of particles | |
| 2217. |
The world's first successful plastic was made in |
| A. | 1770 |
| B. | 1870 |
| C. | 1970 |
| D. | 1980 |
| Answer» C. 1970 | |
| 2218. |
At first slightly different form of 'polythene' was discovered in |
| A. | 1733 |
| B. | 1833 |
| C. | 1933 |
| D. | 1953 |
| Answer» E. | |
| 2219. |
The body of a fish is |
| A. | flat |
| B. | streamlined |
| C. | curved |
| D. | bi-muscular |
| Answer» C. curved | |
| 2220. |
To find water, cactus plants have |
| A. | thick roots |
| B. | hairy roots |
| C. | long roots |
| D. | thick shoots |
| Answer» D. thick shoots | |
| 2221. |
Plants can make their own food so they are called |
| A. | primary consumers |
| B. | secondary consumers |
| C. | producers |
| D. | heterotrophs |
| Answer» D. heterotrophs | |
| 2222. |
Fish have gills to absorb |
| A. | water |
| B. | carbon dioxide |
| C. | aquatic plant waste |
| D. | oxygen |
| Answer» E. | |
| 2223. |
The shape of mole is |
| A. | flat |
| B. | streamlined |
| C. | curved |
| D. | bi-muscular |
| Answer» C. curved | |
| 2224. |
To study the changes that occur during photosynthesis, |
| A. | carbon-12 is added to carbon dioxide |
| B. | carbon-13 is added to carbon dioxide |
| C. | carbon-14 is added to carbon dioxide |
| D. | carbon-14 is added to carbon monoxide |
| Answer» D. carbon-14 is added to carbon monoxide | |
| 2225. |
All bonding involve |
| A. | protons |
| B. | neutrons |
| C. | electrons |
| D. | positrons |
| Answer» D. positrons | |
| 2226. |
Actually, the particle that makes difference in atoms is |
| A. | neutron |
| B. | proton |
| C. | electron |
| D. | photon |
| Answer» C. electron | |
| 2227. |
Carbon dioxide contains |
| A. | ionic bonding |
| B. | covalent bonding |
| C. | metallic bonding |
| D. | dative bonding |
| Answer» C. metallic bonding | |
| 2228. |
The symbol of 'magnesium' is |
| A. | Ne |
| B. | Na |
| C. | N |
| D. | Mg |
| Answer» E. | |
| 2229. |
The name of English scientist who invented first practical motor is |
| A. | Isaac Newton |
| B. | Thomas Silva Edison |
| C. | William Sturgeon |
| D. | Vander Waal |
| Answer» D. Vander Waal | |
| 2230. |
Neutral wire is a wire which has |
| A. | voltage |
| B. | current |
| C. | no current or voltage |
| D. | both current and voltage |
| Answer» D. both current and voltage | |
| 2231. |
Electroplating is used for objects which are likely to |
| A. | corrode |
| B. | get dull |
| C. | get weak |
| D. | get corrosive |
| Answer» B. get dull | |
| 2232. |
If two cells are connected in series, the bulb will glow more |
| A. | brightly |
| B. | dimly |
| C. | sharply |
| D. | colorfully |
| Answer» B. dimly | |
| 2233. |
Compared to short thin wire of silver, the long but thin wire would have |
| A. | more resistivity |
| B. | less resistivity |
| C. | equal resistivity |
| D. | no resistivity |
| Answer» B. less resistivity | |
| 2234. |
The density of liquids is |
| A. | lower than solids but higher than gases |
| B. | lower than solids and gases both |
| C. | higher than solids and gases both |
| D. | higher than solids but lower than gases |
| Answer» B. lower than solids and gases both | |
| 2235. |
The first thing that happens during chemical reaction is that |
| A. | a new substance is formed |
| B. | a substance is reversed to its components |
| C. | energy is given out |
| D. | atoms remain same |
| Answer» B. a substance is reversed to its components | |
| 2236. |
One or more new substances are formed due to |
| A. | physical change |
| B. | chemical change |
| C. | biological change |
| D. | state variation |
| Answer» C. biological change | |
| 2237. |
To make high temperature for formation of ammonia, the substance which is used, is |
| A. | steel |
| B. | iron |
| C. | aluminum |
| D. | copper |
| Answer» C. aluminum | |
| 2238. |
When the liquid is cooled down, it changes into solid, this process is known as |
| A. | melting |
| B. | freezing |
| C. | condensation |
| D. | sublimation |
| Answer» C. condensation | |
| 2239. |
The hormone which converts glucose to glycogen is known as |
| A. | glucagon |
| B. | insulin |
| C. | adrenaline |
| D. | blood |
| Answer» C. adrenaline | |
| 2240. |
Arteries carry blood |
| A. | towards the heart |
| B. | away from the heart |
| C. | away from liver |
| D. | to the liver |
| Answer» C. away from liver | |
| 2241. |
The biggest vein in a human body is known as |
| A. | principal vein |
| B. | vena cava |
| C. | major vein |
| D. | main blue vessel |
| Answer» C. major vein | |
| 2242. |
The task of pacemaker is to |
| A. | pump heart |
| B. | produce electricity |
| C. | help chambers to push blood |
| D. | open the valves |
| Answer» C. help chambers to push blood | |
| 2243. |
The fluid in blood is known as |
| A. | tissue fluid |
| B. | plasma |
| C. | hemoglobin |
| D. | fibrinogen |
| Answer» C. hemoglobin | |
| 2244. |
Any solution in which solvent is water, is called |
| A. | aqueous solution |
| B. | hydrated solution |
| C. | anhydrous |
| D. | water solution |
| Answer» B. hydrated solution | |
| 2245. |
Neutral substances have pH |
| A. | 3 |
| B. | 1 |
| C. | 0 |
| D. | 7 |
| Answer» E. | |
| 2246. |
A tincture of iodine is made by dissolving iodine in alcohol which is |
| A. | antiseptic |
| B. | anti inflammatory |
| C. | anti viral |
| D. | anti fungal |
| Answer» B. anti inflammatory | |
| 2247. |
'Carbonates' react with dilute acids to produce |
| A. | oxygen |
| B. | carbon dioxide |
| C. | hydrogen |
| D. | water |
| Answer» C. hydrogen | |
| 2248. |
A substance which has a bitter taste, soapy to touch and turns red litmus into blue is called |
| A. | alkali |
| B. | acid |
| C. | solution |
| D. | solvent |
| Answer» B. acid | |
| 2249. |
Small 'amperes' are measured by |
| A. | giga amperes |
| B. | mega amperes |
| C. | mill amperes |
| D. | kilo amperes |
| Answer» D. kilo amperes | |
| 2250. |
The number of charges an atom contains, is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |