MCQOPTIONS
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MCQOPTIONS
This section includes 532 Mcqs, each offering curated multiple-choice questions to sharpen your Grade8 knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
A region of darkness which is formed when the path of light is blocked is called |
| A. | shadow |
| B. | opaque image |
| C. | inverted picture |
| D. | pinhole |
| Answer» B. opaque image | |
| 252. |
Non-parallel rays of light will produce |
| A. | converging rays |
| B. | diverging rays |
| C. | reflected rays |
| D. | all of them |
| Answer» E. | |
| 253. |
A form of energy which can be detected by our eyes is |
| A. | heat |
| B. | light |
| C. | force |
| D. | electric current |
| Answer» C. force | |
| 254. |
The materials which allow all light to pass through them are called |
| A. | transparent |
| B. | translucent |
| C. | opaque |
| D. | semi-absorbent |
| Answer» B. translucent | |
| 255. |
The change in a direction or bending of light when it is travelling from one transparent medium to another medium is called |
| A. | reflection |
| B. | refraction |
| C. | transmission |
| D. | incident |
| Answer» C. transmission | |
| 256. |
An Antarctic ice fish has specialized feature which enables it to withstand sub-freezing temperatures which is |
| A. | anti-freeze protein |
| B. | hemoglobin |
| C. | chlorophyll |
| D. | amino-acids |
| Answer» B. hemoglobin | |
| 257. |
Some predators and prey use technique to hide themselves called |
| A. | camouflage |
| B. | mimicry |
| C. | inflating |
| D. | blending |
| Answer» B. mimicry | |
| 258. |
Bats can hunt in dark by help of their |
| A. | wings |
| B. | eyes |
| C. | long ears |
| D. | vibrations |
| Answer» D. vibrations | |
| 259. |
Pompeii can withstand temperatures up to |
| A. | 80 °C |
| B. | 50 °C |
| C. | 20 °C |
| D. | 10 °C |
| Answer» B. 50 °C | |
| 260. |
Marine organism survive in the pH of |
| A. | 2 |
| B. | 7 |
| C. | 8 |
| D. | 5 |
| Answer» D. 5 | |
| 261. |
Colorado river moving through layers of sandstone, shale and limestone after million years have formed |
| A. | statues |
| B. | canyon |
| C. | pyramid |
| D. | wall of China |
| Answer» C. pyramid | |
| 262. |
Granite chip on exposure to extreme temperature will be |
| A. | broken |
| B. | stronger |
| C. | weaker |
| D. | stable |
| Answer» B. stronger | |
| 263. |
Repetition in expansion and contractions in rocks give rise to |
| A. | stress |
| B. | heat |
| C. | volume |
| D. | force |
| Answer» B. heat | |
| 264. |
While transportation sediments are sorted according to their |
| A. | size |
| B. | volume |
| C. | color |
| D. | chemical properties |
| Answer» B. volume | |
| 265. |
Sedimentary layers over a period of time are compacted and cemented to form |
| A. | sedimentary rocks |
| B. | mountains |
| C. | deserts |
| D. | hills |
| Answer» B. mountains | |
| 266. |
A muscular organ which walls secretes gastric juice is |
| A. | stomach |
| B. | esophagus |
| C. | rectum |
| D. | esophagus |
| Answer» B. esophagus | |
| 267. |
Large fat droplets are broken down in to smaller droplets by help of |
| A. | proteases |
| B. | bile |
| C. | amylase |
| D. | gastric juice |
| Answer» C. amylase | |
| 268. |
When food leaves the stomach it is termed as |
| A. | bolus |
| B. | chyme |
| C. | waste material |
| D. | ammonia |
| Answer» C. waste material | |
| 269. |
Vitamin A, D,E and K are stored in |
| A. | fat tissue |
| B. | nerve cells |
| C. | epidermal cells |
| D. | muscular cells |
| Answer» B. nerve cells | |
| 270. |
To regulate fluids in our body we need |
| A. | sodium |
| B. | iodine |
| C. | iron |
| D. | calcium |
| Answer» B. iodine | |
| 271. |
The state of organism by being inactive or dormant during hot and dry period is called |
| A. | activation |
| B. | adaptation |
| C. | aestivation |
| D. | deactivation |
| Answer» D. deactivation | |
| 272. |
Bats, owls and fireflies are active at night and called as |
| A. | wild animals |
| B. | nocturnal animals |
| C. | pets |
| D. | smart animals |
| Answer» C. pets | |
| 273. |
Animal which can survive without drinking water for weeks in deserts is |
| A. | camel |
| B. | horse |
| C. | lion |
| D. | elephant |
| Answer» B. horse | |
| 274. |
Many populations which are living together in a particular habitat is called |
| A. | community |
| B. | diversity |
| C. | biodiversity |
| D. | environment |
| Answer» B. diversity | |
| 275. |
Lionesses always hunt together to increase chances of getting |
| A. | prey |
| B. | compete |
| C. | co-operate |
| D. | fight |
| Answer» B. compete | |
| 276. |
A frilled lizard threaten by |
| A. | flaring |
| B. | mimicry |
| C. | inflating |
| D. | blending |
| Answer» B. mimicry | |
| 277. |
Type of symbiosis which involves two kinds of specie the parasite and host is called |
| A. | symbiosis |
| B. | mutualism |
| C. | parasitism |
| D. | food chain |
| Answer» D. food chain | |
| 278. |
Seaweed belong to community of |
| A. | garden |
| B. | field |
| C. | seashore |
| D. | city |
| Answer» D. city | |
| 279. |
In deserts plants prevent loss of water by turning leaves in to |
| A. | spines |
| B. | succulent thick leaves |
| C. | both a and b |
| D. | wither |
| Answer» D. wither | |
| 280. |
A place which is a natural home to animals is called |
| A. | diversity |
| B. | biodiversity |
| C. | habitat |
| D. | population |
| Answer» D. population | |
| 281. |
Water expansion occurs when |
| A. | freezing |
| B. | heating |
| C. | both a and b |
| D. | boiling |
| Answer» B. heating | |
| 282. |
After cooling bimetallic strip bends |
| A. | upwards |
| B. | downwards |
| C. | straight |
| D. | inside |
| Answer» B. downwards | |
| 283. |
The gain or loss of heat affect the state of |
| A. | matter |
| B. | conduction |
| C. | convection |
| D. | radiation |
| Answer» B. conduction | |
| 284. |
On heating the particles of substance expand due to |
| A. | get bigger |
| B. | vibrate faster |
| C. | increase in shape |
| D. | Increase in volume |
| Answer» C. increase in shape | |
| 285. |
A form of energy which flows from hotter region towards cooler region n reach on same temperature is called |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | heat |
| Answer» E. | |
| 286. |
Metamorphic rocks become magma on melting at high |
| A. | temperatures |
| B. | pressures |
| C. | densities |
| D. | energies |
| Answer» B. pressures | |
| 287. |
Magma which flows out to the surface of Earth during a volcanic eruption is called |
| A. | lava |
| B. | magma |
| C. | volcano |
| D. | molten rock |
| Answer» B. magma | |
| 288. |
After eruption of lava a type of rock is obtained called |
| A. | lava rock |
| B. | magma rock |
| C. | volcanic rock |
| D. | molten rock |
| Answer» D. molten rock | |
| 289. |
The rocks which are non-interlocking and porous are |
| A. | sedimentary rocks |
| B. | metamorphic rocks |
| C. | igneous rocks |
| D. | morphic rocks |
| Answer» B. metamorphic rocks | |
| 290. |
A glassy rock having no crystals formed due to less time given is called |
| A. | obsidian |
| B. | pumice |
| C. | basalt |
| D. | granite |
| Answer» B. pumice | |
| 291. |
The carbon dioxide which is present in air produces weak acid in rain called |
| A. | carbonic acid |
| B. | sulphuric acid |
| C. | acetic acid |
| D. | oxalic acid |
| Answer» B. sulphuric acid | |
| 292. |
The top of mountains at night time are |
| A. | hot |
| B. | cold |
| C. | mild |
| D. | temperate |
| Answer» C. mild | |
| 293. |
Weathering and erosion both alter its |
| A. | shape |
| B. | size |
| C. | volume |
| D. | landforms |
| Answer» E. | |
| 294. |
Water expands on |
| A. | room temperature |
| B. | boiling |
| C. | freezing |
| D. | flowing |
| Answer» D. flowing | |
| 295. |
Different appearance of each layer is due to different type of |
| A. | sediments |
| B. | minerals |
| C. | rain water |
| D. | weathering |
| Answer» B. minerals | |
| 296. |
Fireflies attract mates by producing |
| A. | light |
| B. | heat |
| C. | energy |
| D. | food |
| Answer» B. heat | |
| 297. |
Scavengers feed on |
| A. | plants |
| B. | animals |
| C. | birds |
| D. | dead animals |
| Answer» E. | |
| 298. |
Animals ensure their species survival by |
| A. | compete |
| B. | co-operate |
| C. | hunt |
| D. | fight |
| Answer» C. hunt | |
| 299. |
Organisms which feed on plants and animals both are called |
| A. | herbivores |
| B. | carnivores |
| C. | omnivores |
| D. | ovivores |
| Answer» D. ovivores | |
| 300. |
Hydrangea gives of flower in acidic soil with color |
| A. | pink |
| B. | blue |
| C. | yellow |
| D. | white |
| Answer» C. yellow | |