MCQOPTIONS
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MCQOPTIONS
This section includes 30 Mcqs, each offering curated multiple-choice questions to sharpen your GK knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which of the following chlorine has + 1 oxidation number? |
| A. | Zinc chloride |
| B. | Chlorine |
| C. | Hypochlorous acid |
| D. | Hydrochloric acid |
| Answer» D. Hydrochloric acid | |
| 2. |
The air is the example of: |
| A. | The solution of solid in the gas |
| B. | The solution of gas in the gas |
| C. | The solution of liquid in the gas |
| D. | The solution of liquid in the solid |
| Answer» C. The solution of liquid in the gas | |
| 3. |
Chemically " Plaster of Paris " is |
| A. | Calcium oxide |
| B. | Calcium oxalate |
| C. | Calcium Sulphate |
| D. | Calcium Carbonate |
| Answer» D. Calcium Carbonate | |
| 4. |
Which gas is known as 'noble gas' ? |
| A. | Helium |
| B. | Carbon dioxides |
| C. | Hydrogen |
| D. | Oxygen |
| Answer» B. Carbon dioxides | |
| 5. |
Which acid is used in lemons? |
| A. | Acetic acid |
| B. | Nitric acid |
| C. | Citric acid |
| D. | All of the above |
| Answer» D. All of the above | |
| 6. |
Gasohol is |
| A. | Any gas dissolved in alcohol |
| B. | Ethyl alcohol + Kerosene oil |
| C. | Ethyl alcohol + Petrol |
| D. | Natural Gas + Ethyl alcohol |
| Answer» D. Natural Gas + Ethyl alcohol | |
| 7. |
The substances used for artificial rain is |
| A. | Silver iodide |
| B. | Silver bromide |
| C. | Ammonium nitrate |
| D. | All of the above |
| Answer» B. Silver bromide | |
| 8. |
A pungent small often present near the urinals is due to |
| A. | Ammonia |
| B. | Urea |
| C. | Sulphur- di-oxide |
| D. | Chlorine |
| Answer» B. Urea | |
| 9. |
Atomic number of which of the following elements is greater than that of Copper? |
| A. | Zinc |
| B. | Manganese |
| C. | Iron |
| D. | Chromium |
| Answer» B. Manganese | |
| 10. |
Curie is the unit of: |
| A. | Heat |
| B. | Energy |
| C. | Radioactivity |
| D. | Temperature |
| Answer» D. Temperature | |
| 11. |
Water gas is the mixture of |
| A. | carbon dioxide and hydrogen |
| B. | carbon monoxide and hydrogen |
| C. | carbon dioxide and nitrogen |
| D. | carbon monoxide and nitrogen bear |
| Answer» C. carbon dioxide and nitrogen | |
| 12. |
Which is the purest form of iron? |
| A. | Steel |
| B. | Cast iron |
| C. | Pig iron |
| D. | Wrought iron |
| Answer» E. | |
| 13. |
German silver used for making utensils is an alloy of |
| A. | copper silver nickel |
| B. | copper zinc nickel |
| C. | copper zinc aluminum |
| D. | copper nickel aluminum |
| Answer» C. copper zinc aluminum | |
| 14. |
What is the main raw material in glass? |
| A. | Copper |
| B. | Zink |
| C. | Cadmium |
| D. | Silica |
| Answer» E. | |
| 15. |
Percentage of lead in lead pencil is: |
| A. | zero |
| B. | 20 |
| C. | 80 |
| D. | 7 |
| Answer» B. 20 | |
| 16. |
What is the mass number of an element, the atom of which contains two Protons, two neutrons and two electrons? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 17. |
Which one of the following is also known as ' wood spirit s? |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Ethylene glycol |
| D. | Glycerol |
| Answer» B. Ethyl alcohol | |
| 18. |
The anode in a dry cell consists of |
| A. | Cadmium |
| B. | Graphite |
| C. | Copper |
| D. | Zinc |
| Answer» E. | |
| 19. |
Which of the following is used as a lubricant in heavy machines? |
| A. | Phosphorus |
| B. | Graphite |
| C. | Bauxite |
| D. | Sulphur |
| Answer» C. Bauxite | |
| 20. |
Table salt gets moist during rainy season because - |
| A. | sodium chloride contains some quantity of sodium iodide |
| B. | sodium chloride contains hygroscopic impurities like - magnesium chloride |
| C. | sodium chloride Is hygroscopic |
| D. | sodium chloride is deliquescent |
| Answer» C. sodium chloride Is hygroscopic | |
| 21. |
Which one of the following is not a plant product? |
| A. | Nicotine |
| B. | Saccharin |
| C. | Caffeine |
| D. | Piperine |
| Answer» C. Caffeine | |
| 22. |
Which one of the following polymer is used in making bullet - proof vest? |
| A. | Teflon |
| B. | Polyurethane |
| C. | Bakelite |
| D. | Polyamide |
| Answer» E. | |
| 23. |
Potassium nitrate is used in |
| A. | medicine |
| B. | salt |
| C. | glass |
| D. | fertiliser |
| Answer» E. | |
| 24. |
Which of the following is the lightest element in the universe? |
| A. | Nitrogen |
| B. | Silicon |
| C. | Helium |
| D. | Hydrogen |
| Answer» E. | |
| 25. |
Lightest metal is___ |
| A. | Potassium |
| B. | Lithium |
| C. | Sodium |
| D. | Aluminum |
| Answer» C. Sodium | |
| 26. |
Which of the following gases is used in cigarette lighter? |
| A. | Propane |
| B. | Radon |
| C. | Butane |
| D. | Methane |
| Answer» D. Methane | |
| 27. |
The gas used for artificial fruit ripening of green fruit is |
| A. | Ethane |
| B. | Ethylene |
| C. | Methane |
| D. | Acetylene |
| Answer» E. | |
| 28. |
What is the role of a positive catalyst in a chemical reaction? |
| A. | It increases the rate of reaction |
| B. | It decreases the rate of reaction |
| C. | It increases the yield of the products |
| D. | It provides better purity of the products |
| Answer» B. It decreases the rate of reaction | |
| 29. |
Milk is a natural |
| A. | Solution |
| B. | Mixture |
| C. | Suspension |
| D. | Emulsion |
| Answer» E. | |
| 30. |
Impure camphor is purified by |
| A. | sublimation |
| B. | fractional crystallization |
| C. | fractional distillation |
| D. | steam distillation |
| Answer» B. fractional crystallization | |