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. |
Iodine can be separated from a mixture of Iodine and Potassium Chloride by ? |
| A. | Filtration |
| B. | Sublimation |
| C. | Distillation |
| D. | Sedimentation |
| Answer» C. Distillation | |
| 2. |
The most malleable metal is |
| A. | platinum |
| B. | silver |
| C. | gold |
| D. | iron |
| Answer» D. iron | |
| 3. |
The luster of a metal is due to : |
| A. | high polishing |
| B. | high density |
| C. | chemical inertness |
| D. | presence of free electrons |
| Answer» E. | |
| 4. |
The ore which is found in abundance in India is |
| A. | monazite |
| B. | bauxite |
| C. | magnetite |
| D. | fluorspar |
| Answer» B. bauxite | |
| 5. |
The most abundant rare gas in the atmosphere is ? |
| A. | He |
| B. | Ne |
| C. | Ar |
| D. | Xe |
| Answer» D. Xe | |
| 6. |
The most abundant element in the earth's crust is ? |
| A. | Aluminium |
| B. | Nitrogen |
| C. | Silicon |
| D. | Oxygen |
| Answer» E. | |
| 7. |
The metal that is used as a catalyst in the hydrogenation of oils is ? |
| A. | Pb |
| B. | Ni |
| C. | Cu |
| D. | Pt |
| Answer» C. Cu | |
| 8. |
The nuclear particles which are assumed to hold the nucleons together are ? |
| A. | positrons |
| B. | neutrons |
| C. | electrons |
| D. | mesons |
| Answer» E. | |
| 9. |
Which of the following gas is used in cigarette lighters ? |
| A. | Butane |
| B. | Propane |
| C. | Methane` |
| D. | Ethane |
| Answer» B. Propane | |
| 10. |
Which of the following is produced during the formation of photochemical smog ? |
| A. | Nitrogen Oxides |
| B. | Hydrocarbons |
| C. | Methane |
| D. | Ozone |
| Answer» E. | |
| 11. |
The metallurgical process in which a metal is obtained in a fused state is called ? |
| A. | roasting |
| B. | calcinations |
| C. | smelting |
| D. | froth floatation |
| Answer» D. froth floatation | |
| 12. |
Which gas is used in fire extinguishers ? |
| A. | Carbon dioxide |
| B. | Nitrogen oxide |
| C. | Carbon monoxide |
| D. | Sulpher dioxide |
| Answer» B. Nitrogen oxide | |
| 13. |
The metal used to recover copper from a solution of copper sulphate is ? |
| A. | Na |
| B. | Ag |
| C. | Hg |
| D. | Fe |
| Answer» E. | |
| 14. |
Which of the primary component of natural gas? |
| A. | Ethane |
| B. | Propane |
| C. | Methane |
| D. | Butane |
| Answer» D. Butane | |
| 15. |
Atomic number is equal to |
| A. | Number of electrons |
| B. | Number of nutron |
| C. | Number of protons |
| D. | Total number of protons and neutrons |
| Answer» D. Total number of protons and neutrons | |
| 16. |
The most electronegative element among the following is |
| A. | sodium |
| B. | bromine |
| C. | fluorine |
| D. | oxygen |
| Answer» D. oxygen | |
| 17. |
Which one of the following metals does not react with water to produce Hydrogen? |
| A. | Cadmium |
| B. | Lithium |
| C. | Potassium |
| D. | Sodium |
| Answer» B. Lithium | |
| 18. |
The oxide of Nitrogen used in medicine as anaesthetic is ? |
| A. | Nitrogen pentoxide |
| B. | Nitrous oxide |
| C. | Nitric oxide |
| D. | Nitrogen dioxide |
| Answer» B. Nitrous oxide | |
| 19. |
Aspirin is |
| A. | acetyl salicylic acid |
| B. | sodium salicylate |
| C. | methyl salicylate |
| D. | ethyl salicylate |
| Answer» B. sodium salicylate | |
| 20. |
Water drops are spherical because of ? |
| A. | viscosity |
| B. | density |
| C. | polarity |
| D. | surface tension |
| Answer» E. | |
| 21. |
The chemical used as a fixer in photography is ? |
| A. | sodium thiosulphate |
| B. | sodium sulphate |
| C. | borax |
| D. | ammonium sulphate |
| Answer» B. sodium sulphate | |
| 22. |
Which is also called Stranger Gas ? |
| A. | Xenon |
| B. | Neon |
| C. | Argon |
| D. | Nitrous oxide |
| Answer» B. Neon | |
| 23. |
Which one of the following gas is readily soluble in water at room temperature ? |
| A. | chlorine |
| B. | nitrogen |
| C. | ammonia |
| D. | carbon dioxide |
| Answer» E. | |
| 24. |
Which have the maximum density ? |
| A. | Water |
| B. | Benzene |
| C. | Ice |
| D. | Chloroform |
| Answer» B. Benzene | |
| 25. |
Which one of the following is the softest? |
| A. | sodium |
| B. | iron |
| C. | aluminium |
| D. | lithium |
| Answer» B. iron | |
| 26. |
pH of water is |
| A. | 5 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» D. 8 | |
| 27. |
pH of blood is ? |
| A. | 10.4 |
| B. | 9 |
| C. | 7.4 |
| D. | 4 |
| Answer» D. 4 | |
| 28. |
Who proposed first atomic theory ? |
| A. | E.Rutherford |
| B. | De Broglie |
| C. | John Dalton |
| D. | D.I.Mendeleef |
| Answer» D. D.I.Mendeleef | |
| 29. |
Washing soda is ? |
| A. | sodium sulphite |
| B. | sodium bicarbonate |
| C. | sodiun carbonate |
| D. | sodium biosulphite |
| Answer» D. sodium biosulphite | |
| 30. |
Air contains maximum amount of |
| A. | oxygen |
| B. | nitrogen |
| C. | hydrogen |
| D. | carbon dioxide |
| Answer» C. hydrogen | |
| 31. |
Homo nuclear molecules contain ? |
| A. | polar bond |
| B. | covalent bond |
| C. | ionic bond |
| D. | coordinate bond |
| Answer» C. ionic bond | |
| 32. |
Human bone does not contain |
| A. | calcium |
| B. | carbon |
| C. | oxygen |
| D. | phosphorous |
| Answer» D. phosphorous | |
| 33. |
The isotope atoms differ in ? |
| A. | number of neutrons |
| B. | atomic number |
| C. | number of electrons |
| D. | atomic weight |
| Answer» B. atomic number | |
| 34. |
What nucleus of atom contains ? |
| A. | protons |
| B. | electrons |
| C. | electrons and protons |
| D. | protons and neutrons |
| Answer» E. | |
| 35. |
What is a mixture of potassium nitrate powdered charcoal and sulphur called? |
| A. | paint |
| B. | aluminium |
| C. | brass |
| D. | gun powder |
| Answer» E. | |
| 36. |
Which metal is heaviest ? |
| A. | osmium |
| B. | mercury |
| C. | iron |
| D. | nickle |
| Answer» B. mercury | |
| 37. |
Bleaching action of chlorine is by |
| A. | decomposition |
| B. | hydrolysis |
| C. | reduction |
| D. | oxidation |
| Answer» B. hydrolysis | |
| 38. |
What is Calcium sulphate ? |
| A. | epsom salt |
| B. | blue vitriol |
| C. | gypsum salt |
| D. | potash alum |
| Answer» D. potash alum | |
| 39. |
Which is used in preparation of dynamite ? |
| A. | glycerol |
| B. | ethyl alcohol |
| C. | methyl alcohol |
| D. | glycol |
| Answer» B. ethyl alcohol | |
| 40. |
Oil of vitriol is |
| A. | nitric acid |
| B. | sulphuric acid |
| C. | hydrochloric acid |
| D. | phosphoric acid |
| Answer» C. hydrochloric acid | |
| 41. |
What among following is used to produce artificial rain ? |
| A. | copper oxide |
| B. | carbon monoxide |
| C. | silver iodide |
| D. | silver nitrate |
| Answer» D. silver nitrate | |
| 42. |
The term PVC used in the plastic industry stands for |
| A. | polyvinyl chloride |
| B. | polyvinyl carbobate |
| C. | phosphor vanadiu chloride |
| D. | phosphavinyl chloride |
| Answer» B. polyvinyl carbobate | |
| 43. |
Rare gases are |
| A. | mono atomic |
| B. | di atomic |
| C. | tri atomic |
| D. | None of above |
| Answer» B. di atomic | |
| 44. |
Identify the wrong statement in the following |
| A. | Atomic radius of the elements increases as one moves down the first group of the periodic table |
| B. | Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the |
| C. | Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius |
| D. | Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius |
| Answer» D. Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius | |
| 45. |
Which acid is present in lemon ? |
| A. | marlic acid |
| B. | citric acid |
| C. | lactic acid |
| D. | tartaric acid |
| Answer» C. lactic acid | |
| 46. |
Which is not a type of elements ? |
| A. | Metals |
| B. | Non Metals |
| C. | Metalloids |
| D. | Gases |
| Answer» E. | |
| 47. |
Who is regarded as father of modern chemistry ? |
| A. | Ruterford |
| B. | Einstein |
| C. | Lavoisier |
| D. | C.V. Raman |
| Answer» D. C.V. Raman | |