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.
| 401. |
A liquid which is used to test fats is called |
| A. | ethanol |
| B. | ethylene |
| C. | methanol |
| D. | glycol |
| Answer» B. ethylene | |
| 402. |
Biuret solution is used to test for |
| A. | vitamins |
| B. | proteins |
| C. | carbohydrates |
| D. | fats |
| Answer» C. carbohydrates | |
| 403. |
Ruminants is referred to |
| A. | cow |
| B. | sheep |
| C. | goat |
| D. | all of them |
| Answer» E. | |
| 404. |
If vitamins are taken in excess they can lead to |
| A. | healthy growth |
| B. | fast growth |
| C. | toxicity |
| D. | cell development |
| Answer» D. cell development | |
| 405. |
The compounds which are made up of long chains of amino acids is called |
| A. | proteins |
| B. | sugars |
| C. | lipids |
| D. | fats |
| Answer» B. sugars | |
| 406. |
The expansion and contraction among solid, liquids and gases the one which has greater tendency to expand is |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | molten |
| Answer» D. molten | |
| 407. |
A metal ball which is passing through metal ring will not pass after |
| A. | heating |
| B. | freezing |
| C. | constant conditions |
| D. | accelerating |
| Answer» B. freezing | |
| 408. |
When the substance cool off there is a decrease in |
| A. | size of substance |
| B. | vibrations |
| C. | temperature |
| D. | all of them |
| Answer» E. | |
| 409. |
If one end of metal rod is heated the whole rod becomes hot due to |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | expansion |
| Answer» B. convection | |
| 410. |
The instruments which are used to measure temperature are called |
| A. | barometer |
| B. | mercury |
| C. | spectrometer |
| D. | thermometer |
| Answer» E. | |
| 411. |
When energy is passed from one particle to another through a medium is called |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | expansion |
| Answer» B. convection | |
| 412. |
The measure of hotness of an object is known as |
| A. | volume |
| B. | density |
| C. | temperature |
| D. | heat |
| Answer» D. heat | |
| 413. |
A breeze which is produced at night time when land loses more heat quickly is |
| A. | land breeze |
| B. | sea breeze |
| C. | sand storm |
| D. | thunderstorm |
| Answer» B. sea breeze | |
| 414. |
The poor conductors of heat are also termed as |
| A. | heat insulators |
| B. | thermal insulators |
| C. | both a and b |
| D. | heat conductors |
| Answer» D. heat conductors | |
| 415. |
Dull and black surfaces are heat's good |
| A. | radiator |
| B. | conductors |
| C. | insulators |
| D. | convectors |
| Answer» B. conductors | |
| 416. |
A street lamp is example of |
| A. | extended light source |
| B. | point source light |
| C. | both a and b |
| D. | none |
| Answer» B. point source light | |
| 417. |
A mirror which have reflected surface bugles outwards is called a |
| A. | convex mirror |
| B. | concave mirror |
| C. | plane mirror |
| D. | cosmetic mirror |
| Answer» B. concave mirror | |
| 418. |
Mirrors which have curved surfaces are |
| A. | concave |
| B. | convex |
| C. | both a and b |
| D. | plane |
| Answer» D. plane | |
| 419. |
Fluid which reflects all the colors of white light is |
| A. | water |
| B. | milk |
| C. | orange juice |
| D. | vinegar |
| Answer» C. orange juice | |
| 420. |
The bouncing off or returning of light after striking a surface is called |
| A. | reflection |
| B. | refraction |
| C. | transmission |
| D. | mirror |
| Answer» B. refraction | |
| 421. |
The sources of proteins includes |
| A. | fish |
| B. | poultry |
| C. | eggs |
| D. | all of them |
| Answer» E. | |
| 422. |
An average person should consume water in a day equal to |
| A. | 2-4 glasses |
| B. | 2-4 gallons |
| C. | 6-8 glasses |
| D. | 10-12 liters |
| Answer» D. 10-12 liters | |
| 423. |
Constipation is mainly because of less in take of |
| A. | fiber |
| B. | vitamins |
| C. | carbohydrates |
| D. | fats |
| Answer» B. vitamins | |
| 424. |
Vitamin B1 and Vitamin C are |
| A. | water soluble |
| B. | fat soluble |
| C. | both a and b |
| D. | ethanol soluble |
| Answer» B. fat soluble | |
| 425. |
Fats provide twice the energy more than |
| A. | vitamins |
| B. | carbohydrates |
| C. | minerals |
| D. | proteins |
| Answer» C. minerals | |
| 426. |
Organisms which directly feed on producers are |
| A. | primary consumer |
| B. | secondary consumer |
| C. | decomposer |
| D. | carnivores |
| Answer» B. secondary consumer | |
| 427. |
There occurs the diminishing along food chain in amount of |
| A. | energy |
| B. | heat |
| C. | food |
| D. | temperature |
| Answer» B. heat | |
| 428. |
A series of organism through which energy is transferred in the form of food is called |
| A. | food web |
| B. | food chain |
| C. | food cycle |
| D. | ecosystem |
| Answer» C. food cycle | |
| 429. |
Organisms which feed on secondary consumers are called |
| A. | primary consumer |
| B. | tertiary consumers |
| C. | producers |
| D. | decomposers |
| Answer» C. producers | |
| 430. |
Voice is produced by the vibrations of |
| A. | vocal cords |
| B. | trachea |
| C. | lungs |
| D. | heart |
| Answer» B. trachea | |
| 431. |
The division of windpipe is done in two |
| A. | bronchioles |
| B. | alveoli |
| C. | nostril |
| D. | bronchi |
| Answer» E. | |
| 432. |
Exhaled air is the air which we |
| A. | breath in |
| B. | breath out |
| C. | transport in body |
| D. | use under water |
| Answer» C. transport in body | |
| 433. |
The life span of red blood cells is |
| A. | 2 months |
| B. | 45 days |
| C. | 4 months |
| D. | 12 days |
| Answer» D. 12 days | |
| 434. |
The transport system of blood by special organ heart constitutes |
| A. | circulatory system |
| B. | respiratory system |
| C. | digestion system |
| D. | nervous system |
| Answer» B. respiratory system | |
| 435. |
The composition of red blood cells have specialized protein called |
| A. | iron |
| B. | chlorophyll |
| C. | copper |
| D. | silver |
| Answer» B. chlorophyll | |
| 436. |
A rainbow colored disc was given by |
| A. | Newton |
| B. | Einstein |
| C. | Thomson |
| D. | Steve jobs |
| Answer» B. Einstein | |
| 437. |
Shadows are formed due to way of light which always travel in |
| A. | straight line |
| B. | divergent line |
| C. | convergent line |
| D. | clusters |
| Answer» B. divergent line | |
| 438. |
Diamond is a |
| A. | transparent |
| B. | translucent |
| C. | opaque |
| D. | semi-absorbent |
| Answer» B. translucent | |
| 439. |
If light ray strikes a surface at right angle, it is reflected along |
| A. | same path |
| B. | opposite direction |
| C. | reflected acutely |
| D. | obtuse reflected |
| Answer» B. opposite direction | |
| 440. |
A tube containing two or more plane mirrors inclined at certain angles to each other is called a |
| A. | microscope |
| B. | telescope |
| C. | kaleidoscope |
| D. | periscope |
| Answer» D. periscope | |
| 441. |
In plants proteins are made by using |
| A. | carbonates |
| B. | nitrates |
| C. | sulfates |
| D. | chlorates |
| Answer» C. sulfates | |
| 442. |
A parasitic plant which grows on host tree and kills slowly host tree is called |
| A. | stranger fig |
| B. | pine tree |
| C. | snobar tree |
| D. | mango tree |
| Answer» B. pine tree | |
| 443. |
Strong jaws, sharp teeth and claws are features of |
| A. | predator |
| B. | prey |
| C. | scavenger |
| D. | wild animal |
| Answer» B. prey | |
| 444. |
Deer protect themselves while grazing in groups called |
| A. | flock |
| B. | herd |
| C. | pack |
| D. | crowd |
| Answer» C. pack | |
| 445. |
Organisms which are found in pond community includes |
| A. | tubifex worm |
| B. | terrapin |
| C. | damselfly |
| D. | all of them |
| Answer» E. | |
| 446. |
Surplus carbohydrates are converted in our body in the form of |
| A. | proteins |
| B. | sugars |
| C. | lipids |
| D. | fats |
| Answer» E. | |
| 447. |
Complex sugars includes |
| A. | lactose |
| B. | maltose |
| C. | sucrose |
| D. | all of them |
| Answer» E. | |
| 448. |
The special type of proteins which are produced by our body to bring about or speed up chemical reaction in body is called |
| A. | enzyme |
| B. | catalyst |
| C. | macro proteins |
| D. | initiator |
| Answer» B. catalyst | |
| 449. |
The process of removal of undigested food from body is known as |
| A. | defecation |
| B. | egestion |
| C. | both a and b |
| D. | excretion |
| Answer» D. excretion | |
| 450. |
A small narrow tube which has strong muscles in its walls is called |
| A. | esophagus |
| B. | intestine |
| C. | rectum |
| D. | stomach |
| Answer» B. intestine | |