MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called: |
| A. | Suspension |
| B. | Colloids |
| C. | Solution |
| D. | Alloy |
| Answer» C. Solution | |
| 2. |
A homogeneous mixture of two or more substances is called: |
| A. | Solution |
| B. | Suspension |
| C. | Colloid |
| D. | Metal |
| Answer» B. Suspension | |
| 3. |
A homogeneous mixture of two or more substances in called: |
| A. | Solution |
| B. | Suspension |
| C. | Colloid |
| D. | Metal |
| Answer» B. Suspension | |
| 4. |
A substance made up of two or more elements chemically combined in a fixed proportion by mass is called: |
| A. | Mixture |
| B. | Compound |
| C. | Solution |
| D. | Suspension |
| Answer» C. Solution | |
| 5. |
An elements that is neither malleable nor ductile, and does not conduct electricity is called: |
| A. | Solution |
| B. | Alloy |
| C. | Mixture |
| D. | Colloids |
| Answer» D. Colloids | |
| 6. |
What is an element that is malleable and ductile, and conducts electricity called? |
| A. | Non-metals |
| B. | Metals |
| C. | Metalloids |
| D. | Ions |
| Answer» C. Metalloids | |
| 7. |
A substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electric energy is called: |
| A. | Element |
| B. | Atom |
| C. | Nucleus |
| D. | Matter |
| Answer» B. Atom | |
| 8. |
The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called: |
| A. | Diffusion |
| B. | Condensation |
| C. | Vaporisation |
| D. | Sublimation |
| Answer» E. | |
| 9. |
What is the process called in which gas is changed into liquid by cooling? |
| A. | Condensation |
| B. | Vaporisation |
| C. | Melting |
| D. | Boiling |
| Answer» B. Vaporisation | |
| 10. |
The process in which a liquid substance change into gas rapidly on heating is called: |
| A. | Vaporisation |
| B. | Boiling |
| C. | Freezing |
| D. | Condensation |
| Answer» C. Freezing | |
| 11. |
The process by which solid substance changes into liquid is called: |
| A. | Boiling |
| B. | Diffusion |
| C. | Melting |
| D. | Condensation |
| Answer» D. Condensation | |
| 12. |
The spreading out and mixing of a substance with another substance due to motion of its particles is called: |
| A. | Diffusion |
| B. | Vaporisation |
| C. | Condensation |
| D. | Heating |
| Answer» B. Vaporisation | |
| 13. |
Which of the following gas is directly respondent for the depletion of ozone layer? |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Nitrous oxide |
| D. | Chlorofluorocarbon (CFC) |
| Answer» E. | |
| 14. |
Which of the following when passes through the alkaline solution of the pyrogalol then ground nut coloured solution is formed? |
| A. | Oxygen |
| B. | Nitrogen |
| C. | Hydrogen |
| D. | Carbon dioxide |
| Answer» B. Nitrogen | |
| 15. |
0xygen and Ozone are: |
| A. | Allotropes |
| B. | Isotopes |
| C. | Isomers |
| D. | Isobars |
| Answer» B. Isotopes | |
| 16. |
Which of the following is a paramagnetic substance? |
| A. | Iron |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Nitrogen, |
| Answer» D. Nitrogen, | |
| 17. |
Which of the following is the most abundantly occurring element in the earth-crust? |
| A. | Oxygen |
| B. | Nitrogen |
| C. | Manganese |
| D. | Silicon |
| Answer» B. Nitrogen | |
| 18. |
Tear gas is: |
| A. | Ammonia |
| B. | Chlorine |
| C. | Hydrogen chloride |
| D. | Hydrogen sulphide |
| Answer» C. Hydrogen chloride | |
| 19. |
Usually the coolant which is used as domestic coolant: |
| A. | Neon |
| B. | Ammonia |
| C. | Nitrogen |
| D. | Freon |
| Answer» C. Nitrogen | |
| 20. |
The chemical substance which is easily soluble in water: |
| A. | Carbon |
| B. | Nitrogen |
| C. | Ammonia |
| D. | Iodine |
| Answer» D. Iodine | |
| 21. |
The laughing gas utilized in the form of anaesthesia by the doctors is: |
| A. | Nitrogen |
| B. | Nitrogen oxide |
| C. | Nitrous oxide |
| D. | Nitrogen dioxide |
| Answer» D. Nitrogen dioxide | |
| 22. |
Quartz is composed of: |
| A. | Calcium sulphate |
| B. | Calcium silicate |
| C. | Sodium sulphate |
| D. | Sodium silicate |
| Answer» C. Sodium sulphate | |
| 23. |
Dry ice is: |
| A. | Solid water |
| B. | Solid CO2 |
| C. | Dehydrated ice |
| D. | Solid H2O2 |
| Answer» C. Dehydrated ice | |
| 24. |
Which of the following gas pollutes the most to the air? |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Sulphur dioxide |
| D. | Hydrocarbon |
| Answer» C. Sulphur dioxide | |
| 25. |
The polluted gas emitted from the vehicles is mainly: |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Marsh gas |
| D. | Nitrogen oxide |
| Answer» C. Marsh gas | |
| 26. |
The ordinary and general type of coke is : |
| A. | Anthracite |
| B. | Lignite |
| C. | Bituminous |
| D. | Peat |
| Answer» D. Peat | |
| 27. |
The percentage content of carbon is more than other coal in: |
| A. | Bituminous |
| B. | Lignite |
| C. | Peat |
| D. | Anthracite |
| Answer» E. | |
| 28. |
Which of the following is the most hard? |
| A. | Diamond |
| B. | Glass |
| C. | Quartz |
| D. | Platinum |
| Answer» B. Glass | |
| 29. |
In all bio compounds the most necessary fundamental element is: |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Carbon |
| D. | Sulphur |
| Answer» E. | |
| 30. |
The heavy water is a type of: |
| A. | Coolant |
| B. | Moderator |
| C. | Ore |
| D. | Fuel |
| Answer» D. Fuel | |
| 31. |
In which of the following carbon is not present? |
| A. | Diamond |
| B. | Graphite |
| C. | Coal |
| D. | None of these |
| Answer» C. Coal | |
| 32. |
The permanent hardness of water appears due to the: |
| A. | Carbonates of calcium and magnesium |
| B. | Bicarbonates of calcium and magnesium |
| C. | Chloride and sulphate of the calcium and magnesium |
| D. | None of these |
| Answer» D. None of these | |
| 33. |
The boiling point and freezing point of the water on mixing edible salt would: |
| A. | Increase |
| B. | Increase and then decrease |
| C. | Decrease |
| D. | Decrease and then increase |
| Answer» D. Decrease and then increase | |
| 34. |
The maximum density of the water exists at : |
| A. | 100°C |
| B. | #ERROR! |
| C. | O°C |
| D. | -4°C |
| Answer» C. O°C | |
| 35. |
The colours of the fire crackers are extracted from the elements of the salt of: |
| A. | Zn and S |
| B. | K and Hg |
| C. | Sr and Ba |
| D. | Cr and Ni |
| Answer» D. Cr and Ni | |
| 36. |
The gas emancipating through paddy field is : |
| A. | Ethane |
| B. | Methane |
| C. | Nitrogen |
| D. | All of these |
| Answer» C. Nitrogen | |
| 37. |
Which of the following metal is the hardest one? |
| A. | Gold |
| B. | Iron |
| C. | Platinum |
| D. | Lead |
| Answer» D. Lead | |
| 38. |
Which of the following metal is used in the accumulator cell? |
| A. | Copper |
| B. | Lead |
| C. | Aluminium |
| D. | Zinc |
| Answer» C. Aluminium | |
| 39. |
The substance employed and frequently used in the fluorescent tube is: |
| A. | Sodium oxide and argon |
| B. | Sodium vapour and neon |
| C. | Mercury vapour and argon |
| D. | Mercury oxide and argon |
| Answer» D. Mercury oxide and argon | |
| 40. |
Which of the following metal is liquid at ordinary temperature? |
| A. | Lead |
| B. | Mercury |
| C. | Nickel |
| D. | Tin |
| Answer» C. Nickel | |
| 41. |
Which of the following metal is the heaviest? |
| A. | Silver |
| B. | Copper |
| C. | Gold |
| D. | Lead |
| Answer» D. Lead | |
| 42. |
The substance which is useful for the photography: |
| A. | Silver Nitrate |
| B. | Silver bromide |
| C. | Sulphuric acid |
| D. | Citric acid |
| Answer» C. Sulphuric acid | |
| 43. |
Which of the following metal is the best conductor of the electricity? |
| A. | Gold |
| B. | Silver |
| C. | Copper |
| D. | Zinc |
| Answer» C. Copper | |
| 44. |
The sharp (bitter) smell of the substance which is found in the colouration or painting is: |
| A. | CaOH |
| B. | Al2 (S04)3 |
| C. | CaC03 |
| D. | Zn3(P04)2 |
| Answer» E. | |
| 45. |
The coating of thin layer of the zinc on the steel or iron utensils is called: |
| A. | Heat feeding |
| B. | Material plating |
| C. | Lamination |
| D. | Electro plating |
| Answer» D. Electro plating | |
| 46. |
Blue Vitriol is: |
| A. | Copper sulphate |
| B. | Iron sulphate |
| C. | Calcium sulphate |
| D. | Sodium sulphate |
| Answer» B. Iron sulphate | |
| 47. |
To provide stern hardness which of the following is mixed up? |
| A. | Carbon |
| B. | Manganese |
| C. | Silicon |
| D. | Chromium |
| Answer» E. | |
| 48. |
Which of the following element is mixed up for making steel which can resist high temperature and which has high level hardness and anti-frictional resistivity? |
| A. | Aluminium |
| B. | Chromium |
| C. | Nickel |
| D. | Tungsten |
| Answer» C. Nickel | |
| 49. |
What will be the change when iron get rusted? |
| A. | Its weight is increased |
| B. | Its weight is decreased |
| C. | No changes take place |
| D. | Its weight change |
| Answer» B. Its weight is decreased | |
| 50. |
From which of the following ore, iron is extracted? |
| A. | Lime stone |
| B. | Pinch blend |
| C. | Monazite sand |
| D. | Haematite |
| Answer» E. | |