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.
| 1. |
Air, water, light, temperature and pH makes up the |
| A. | biotic environment |
| B. | abiotic environment |
| C. | ecosystem |
| D. | food chain |
| Answer» C. ecosystem | |
| 2. |
The sleep like state which an animal adopt to lower metabolic rates is called |
| A. | transpiration |
| B. | shedding of leaves |
| C. | hibernating |
| D. | migration |
| Answer» D. migration | |
| 3. |
Wide variety of living things is called |
| A. | diversity |
| B. | biodiversity |
| C. | habitat |
| D. | population |
| Answer» C. habitat | |
| 4. |
The type of aquatic animals that can survive in particular water is determined by analyzing its |
| A. | pH |
| B. | temperature |
| C. | volume |
| D. | turbidity |
| Answer» B. temperature | |
| 5. |
Vultures and Hyenas are |
| A. | herbivores |
| B. | carnivores |
| C. | omnivores |
| D. | scavengers |
| Answer» E. | |
| 6. |
The energy which is stored in food that we eat is only released in cells of body by process of |
| A. | respiration |
| B. | digestion |
| C. | excretion |
| D. | elimination |
| Answer» B. digestion | |
| 7. |
Compounds which are needed in very small amount but their deficiency lead to scurvy and rickets are |
| A. | vitamins |
| B. | proteins |
| C. | carbohydrates |
| D. | fats |
| Answer» B. proteins | |
| 8. |
Digestive enzymes includes |
| A. | lipase |
| B. | proteases |
| C. | carbohydrates |
| D. | all of them |
| Answer» E. | |
| 9. |
A disease Kwashiorkor is caused by the deficiency of |
| A. | vitamins |
| B. | proteins |
| C. | carbohydrates |
| D. | fats |
| Answer» C. carbohydrates | |
| 10. |
Vitamin E is important for |
| A. | protecting cells |
| B. | vital tissues protection |
| C. | both a and b |
| D. | development of bones |
| Answer» D. development of bones | |
| 11. |
The most important group of decomposers include |
| A. | bacteria |
| B. | fungi |
| C. | both a and b |
| D. | virus |
| Answer» D. virus | |
| 12. |
A food chain starts with a |
| A. | producer |
| B. | consumers |
| C. | decomposer |
| D. | scavengers |
| Answer» B. consumers | |
| 13. |
A debris from rotting matter is called |
| A. | detritus |
| B. | dirt |
| C. | waste material |
| D. | fertilizer |
| Answer» B. dirt | |
| 14. |
Detritus is eaten by |
| A. | earthworm |
| B. | millipede |
| C. | both a and b |
| D. | birds |
| Answer» D. birds | |
| 15. |
Decomposers help in |
| A. | breaking dead waste |
| B. | recycle nutrients |
| C. | both a and b |
| D. | spreading decay |
| Answer» D. spreading decay | |
| 16. |
An instrument which enables us to see things which are too small to be seen with naked eye is called |
| A. | microscope |
| B. | telescope |
| C. | kaleidoscope |
| D. | periscope |
| Answer» B. telescope | |
| 17. |
Angle between incident ray and normal ray is called angle of |
| A. | reflection |
| B. | refraction |
| C. | transmission |
| D. | incident |
| Answer» E. | |
| 18. |
The way of light is always in a |
| A. | bend path |
| B. | straight line |
| C. | convergent path |
| D. | divergent path |
| Answer» C. convergent path | |
| 19. |
Reflection obtained from a smooth surface is called a |
| A. | regular reflection |
| B. | irregular reflection |
| C. | both a and b |
| D. | none |
| Answer» B. irregular reflection | |
| 20. |
Cyan, yellow and magenta are |
| A. | primary colors |
| B. | white colors |
| C. | secondary colors |
| D. | tertiary colors |
| Answer» D. tertiary colors | |
| 21. |
Water freezes at |
| A. | 98 °C |
| B. | 100 °C |
| C. | 97 °C |
| D. | 0 °C |
| Answer» E. | |
| 22. |
A solar panel is kept black surface so that it absorbs more |
| A. | heat |
| B. | water |
| C. | air |
| D. | oxygen |
| Answer» B. water | |
| 23. |
Materials trapped air by fur, feathers, wool and sawdust are heat |
| A. | insulators |
| B. | conductors |
| C. | gainers |
| D. | losers |
| Answer» B. conductors | |
| 24. |
A very good conductors of heat contains |
| A. | metals |
| B. | non-metals |
| C. | liquids |
| D. | gases |
| Answer» B. non-metals | |
| 25. |
In SI unit of temperature is |
| A. | °C |
| B. | F |
| C. | K |
| D. | Ampere |
| Answer» D. Ampere | |
| 26. |
The rock of material which attract is termed as |
| A. | magnet |
| B. | magnetite |
| C. | magnesia |
| D. | magnetic |
| Answer» C. magnesia | |
| 27. |
To make powerful magnets there is use of alloy called |
| A. | Alnico |
| B. | aluminum |
| C. | cobalt |
| D. | ferrites |
| Answer» B. aluminum | |
| 28. |
The pole which points towards north is called |
| A. | N-pole |
| B. | S-pole |
| C. | W-pole |
| D. | E-pole |
| Answer» B. S-pole | |
| 29. |
Magnets was found in a place called |
| A. | Asia |
| B. | Magnesia |
| C. | Europe |
| D. | Denmark |
| Answer» C. Europe | |
| 30. |
Magnets nowadays are made of |
| A. | iron |
| B. | steel |
| C. | both a and b |
| D. | copper |
| Answer» D. copper | |
| 31. |
If untreated waste water will be directly spill in to rivers, sea and lakes it may |
| A. | contaminate |
| B. | polluted |
| C. | spread diseases |
| D. | all of them |
| Answer» E. | |
| 32. |
Fertilizers supports growth of |
| A. | algae |
| B. | fruit plants |
| C. | vines |
| D. | pines |
| Answer» B. fruit plants | |
| 33. |
Environment can be kept clean and green by using |
| A. | less energy |
| B. | environment friendly technology |
| C. | protecting wildlife |
| D. | all of them |
| Answer» E. | |
| 34. |
Smoke particles and harmful gases released in air produces a |
| A. | smoke |
| B. | haze |
| C. | fog |
| D. | smog |
| Answer» C. fog | |
| 35. |
The dodo became extinct in |
| A. | 1681 |
| B. | 1961 |
| C. | 1896 |
| D. | 1861 |
| Answer» B. 1961 | |
| 36. |
The circulatory system of human is composed of |
| A. | heart |
| B. | blood |
| C. | blood vessels |
| D. | all of them |
| Answer» E. | |
| 37. |
Platelets help in blood |
| A. | producing |
| B. | rejuvenating |
| C. | clotting |
| D. | purifying |
| Answer» D. purifying | |
| 38. |
The special organ in mammals, birds and reptiles is |
| A. | lungs |
| B. | air sacs |
| C. | stomata |
| D. | spiracles |
| Answer» B. air sacs | |
| 39. |
More than half of total blood volume is the |
| A. | red and blood cells |
| B. | plasma |
| C. | platelets |
| D. | all of them |
| Answer» C. platelets | |
| 40. |
The ribs moves upwards and outwards when we |
| A. | inhale |
| B. | exhale |
| C. | digestion |
| D. | defecate |
| Answer» B. exhale | |
| 41. |
The use of organisms specially micro-organisms in the manufacture or industrial processes is called |
| A. | biotechnology |
| B. | bioengineering |
| C. | chemical process |
| D. | genetic engineering |
| Answer» B. bioengineering | |
| 42. |
Transfusion of infected blood is main reason for spread of diseases like |
| A. | AIDS |
| B. | Hepatitis B |
| C. | both a and b |
| D. | Polio |
| Answer» D. Polio | |
| 43. |
Viruses are made up of |
| A. | DNA |
| B. | RNA |
| C. | protein coat |
| D. | all of them |
| Answer» E. | |
| 44. |
A medicine which contain dead or weakened germs is used to prevent infectious disease is called a |
| A. | antiseptic |
| B. | antibodies |
| C. | antibiotics |
| D. | vaccine |
| Answer» E. | |
| 45. |
Diseases which are caused by micro-organisms are called |
| A. | contagious |
| B. | venereal |
| C. | infectious |
| D. | incurable |
| Answer» D. incurable | |
| 46. |
Marble is transformed from |
| A. | sandstone |
| B. | limestone |
| C. | igneous rock |
| D. | shale |
| Answer» C. igneous rock | |
| 47. |
Obsidian is rich in |
| A. | silica |
| B. | iron |
| C. | cobalt |
| D. | calcium |
| Answer» B. iron | |
| 48. |
A crystalline or glassy rock formed when magma or lava cools down and solidifies is called |
| A. | sedimentary rocks |
| B. | metamorphic rocks |
| C. | igneous rocks |
| D. | morphic rocks |
| Answer» D. morphic rocks | |
| 49. |
A rock which has been transformed from shale is |
| A. | slate |
| B. | marble |
| C. | gneiss |
| D. | quartzite |
| Answer» B. marble | |
| 50. |
Limestone's are very rich in |
| A. | calcium |
| B. | carbonate |
| C. | calcium carbonate |
| D. | magnesium carbonate |
| Answer» D. magnesium carbonate | |