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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What are the products produced due to the combustion of coal? [2 MARKS] |
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Answer» What are the products produced due to the combustion of coal? [2 MARKS] |
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| 2. |
Which of these factors affect the rate of diffusion? |
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Answer» Which of these factors affect the rate of diffusion? |
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| 3. |
With C4 explosives set, Tom proceeded into the structure. After he retrieves the chip, he needs to activate the C4 and bring the building down.Tom needs to reach the apex [top] of the structure, where the chip was hidden. He had a jetpack which can propel him to reach the height. However, there wasn’t enough fuel in it. Tom needs 12m amount of fuel for the jetpack – he had only 3m amount of fuel left. What is the amount of fuel he needs to multiply to the existing fuel to reach the apex? |
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Answer» With C4 explosives set, Tom proceeded into the structure. After he retrieves the chip, he needs to activate the C4 and bring the building down.Tom needs to reach the apex [top] of the structure, where the chip was hidden. He had a jetpack which can propel him to reach the height. However, there wasn’t enough fuel in it. Tom needs 12m amount of fuel for the jetpack – he had only 3m amount of fuel left. What is the amount of fuel he needs to multiply to the existing fuel to reach the apex? |
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| 4. |
What will happen to the boiling point of a liquid, when we increase the pressure: |
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Answer» What will happen to the boiling point of a liquid, when we increase the pressure: |
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| 5. |
Why is electronic configuration? |
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Answer» Why is electronic configuration? |
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| 6. |
Sodium metal reacts vigorously with water. (a) Name the gas evolved when sodium reacts with water. (b) State whether the solution formed by the reaction of sodium with water is acidic or basic. |
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Answer» Sodium metal reacts vigorously with water. (a) Name the gas evolved when sodium reacts with water. (b) State whether the solution formed by the reaction of sodium with water is acidic or basic. |
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| 7. |
In an experiment, sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water. Which of the following correctly represents the balanced equation (with physical states) for this experiment? |
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Answer» In an experiment, sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water. Which of the following correctly represents the balanced equation (with physical states) for this experiment? |
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| 8. |
Give reasons for the following : (a) Sodium and potassium are stored in kerosene. (b) Copper cannot displace zinc from its salt solution (zinc sulphate solution). |
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Answer» Give reasons for the following : (a) Sodium and potassium are stored in kerosene. (b) Copper cannot displace zinc from its salt solution (zinc sulphate solution). |
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| 9. |
Which material is called 'black gold' ? Why ? |
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Answer» Which material is called 'black gold' ? Why ? |
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| 10. |
Two solid spheres are of equal volumes, but of different densities dA and dB and are connected by a string. They are fully immersed in a fluid of density dF. They get arranged into an equilibrium state as shown in the figure with a tension in the string. The arrangement is possible only if |
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Answer» Two solid spheres are of equal volumes, but of different densities dA and dB and are connected by a string. They are fully immersed in a fluid of density dF. They get arranged into an equilibrium state as shown in the figure with a tension in the string. The arrangement is possible only if |
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| 11. |
What is the most abundant element in the universe by mass? |
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Answer» What is the most abundant element in the universe by mass? |
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| 12. |
Work done by car is 250000 J in 10 seconds. then power developed by the engine is___ KW. |
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Answer» Work done by car is 250000 J in 10 seconds. then power developed by the engine is |
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| 13. |
In carbon dioxide, the ratio of carbon atoms to oxygen atoms is always: |
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Answer» In carbon dioxide, the ratio of carbon atoms to oxygen atoms is always: |
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| 14. |
Why Silver articles become black when exposed to air ? |
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Answer» Why Silver articles become black when exposed to air ? |
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| 15. |
Products formed when platinum wire is heated |
| Answer» Products formed when platinum wire is heated | |
| 16. |
Matter is anything that has ___ and occupies ___. |
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Answer» Matter is anything that has |
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| 17. |
What happens when aluminium metal is added to the solution of magnesium chloride? |
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Answer» What happens when aluminium metal is added to the solution of magnesium chloride? |
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| 18. |
A magnesium ribbon is burnt in air. A student made the following observations: i. Magnesium ribbon undergoes oxidation reaction. ii. Magnesium reacts with air to form magnesium oxide. iii. Magnesium ribbon undergoes decomposition reaction. Which of the following statements is correct? |
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Answer» A magnesium ribbon is burnt in air. A student made the following observations: i. Magnesium ribbon undergoes oxidation reaction.
Which of the following statements is correct? |
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| 19. |
Why petrol is an exhaustable natural resource where as sunlight is not? Explain . |
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Answer» Why petrol is an exhaustable natural resource where as sunlight is not? Explain . |
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| 20. |
Seperate salt from sand |
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Answer» Seperate salt from sand |
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| 21. |
Why is it necessary to separate the constituents of a mixture ? |
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Answer» Why is it necessary to separate the constituents of a mixture ? |
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| 22. |
Write the molecular formulate for the following compo unds and name of the elements present. (a) Baking soda (b) Common salt (c) Sulphuric acid (d) Nitric acid |
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Answer» Write the molecular formulate for the following compo unds and name of the elements present. (a) Baking soda (b) Common salt (c) Sulphuric acid (d) Nitric acid |
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| 23. |
The use of excessive fertilisers in the fields leads to the deficiency of an important substance in the water of a nearby lake. Name the substance. |
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Answer» The use of excessive fertilisers in the fields leads to the deficiency of an important substance in the water of a nearby lake. Name the substance. |
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| 24. |
Where is natural gas not found in India? |
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Answer» Where is natural gas not found in India? |
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| 25. |
Question 12 In villages, people use wood as fuel because: (a) it is considered to be an ideal fuel (b) Of its easy availability and low cost. (c) it is environment friendly. (d) it catches fire easily. |
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Answer» Question 12 In villages, people use wood as fuel because: (a) it is considered to be an ideal fuel (b) Of its easy availability and low cost. (c) it is environment friendly. (d) it catches fire easily. |
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| 26. |
Which among the following is the best conductor of electricity? |
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Answer» Which among the following is the best conductor of electricity? |
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| 27. |
This reaction is an example of a/an ________ reaction. |
Answer» This reaction is an example of a/an ________ reaction. |
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| 28. |
Select the appropriate option that can relate to the process of refining of petroleum. |
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Answer» Select the appropriate option that can relate to the process of refining of petroleum. |
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| 29. |
What is the precipitate formed when aqueous copper sulphate reacts with aqueous ammonium hydroxide? |
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Answer» What is the precipitate formed when aqueous copper sulphate reacts with aqueous ammonium hydroxide? |
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| 30. |
The non-metal which exists in the liquid state at room temperature is : (a) fluorine (b) chlorine (c) bromine (d) iodine |
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Answer» The non-metal which exists in the liquid state at room temperature is : (a) fluorine (b) chlorine (c) bromine (d) iodine |
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| 31. |
Classify the following as physical and chemical changes: (i) Making sugar solution (ii) Cooking chicken (iii) Formation of clouds (iv) Making ice candy |
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Answer» Classify the following as physical and chemical changes: |
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| 32. |
Metals can be drawn into wires and this property is called ______ . [1 MARK] |
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Answer» Metals can be drawn into wires and this property is called ______ . [1 MARK] |
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| 33. |
Which of the following statement is true? |
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Answer» Which of the following statement is true? |
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| 34. |
Permanent hardness of water can be removed by adding ____. |
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Answer» Permanent hardness of water can be removed by adding ____. |
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| 35. |
Explain combustion. [3 MARKS] |
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Answer» Explain combustion. [3 MARKS] |
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| 36. |
Question 3 (a) Synthetic fibres are also called ________or _________fibres. |
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Answer» Question 3 (a) |
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| 37. |
A coolie raises a box of mass 50 kg to a vertical height of 4 m. Calculate the work done by him if the force of gravity on 1 kg mass is 10 N. |
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Answer» A coolie raises a box of mass 50 kg to a vertical height of 4 m. Calculate the work done by him if the force of gravity on 1 kg mass is 10 N. |
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| 38. |
The temperature at which a gas starts changing into the liquid state is called as ___ |
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Answer» The temperature at which a gas starts changing into the liquid state is called as |
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| 39. |
What are the products of incomplete combustion? |
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Answer» What are the products of incomplete combustion? |
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| 40. |
Sodium – Potassium pump transports |
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Answer» Sodium – Potassium pump transports |
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| 41. |
When we burn a candle it's colour formed is yellow and orange why not in gas stove |
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Answer» When we burn a candle it's colour formed is yellow and orange why not in gas stove |
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| 42. |
what is valency |
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Answer» what is valency |
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| 43. |
What are the combustibles in fuel? |
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Answer» What are the combustibles in fuel? |
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| 44. |
Why do soda acid fire extinguisher contains sodium hydrogen carbonate. |
| Answer» Why do soda acid fire extinguisher contains sodium hydrogen carbonate. | |
| 45. |
Q) We should not try to put out a fire in an electrical appliance by pouring water on it. why? A) This is because water such as tap water , salt water has ions and salts which can conduct electricity (except distilled water ) . Pouring water such as tap water will increase the fire caused by the electrical appliances it increases the flow of electric current which produces more light and heat (fire). It can also cause serious injuries to the person pouring the water which may also lead to his / her death. Could you please check my answer. |
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Answer» Q) We should not try to put out a fire in an electrical appliance by pouring water on it. why? A) This is because water such as tap water , salt water has ions and salts which can conduct electricity (except distilled water ) . Pouring water such as tap water will increase the fire caused by the electrical appliances it increases the flow of electric current which produces more light and heat (fire). It can also cause serious injuries to the person pouring the water which may also lead to his / her death. Could you please check my answer. |
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| 46. |
Atomic number = number of protons and number of protons = number of electrons. So can we say that atomic number = number of electrons |
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Answer» Atomic number = number of protons and number of protons = number of electrons. So can we say that atomic number = number of electrons |
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| 47. |
When did John Kaye invent the ‘Spinning Jenny’? |
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Answer» When did John Kaye invent the ‘Spinning Jenny’? |
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| 48. |
Identify the gas that is generally produced when coal is burnt in the presence of excess air. |
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Answer» Identify the gas that is generally produced when coal is burnt in the presence of excess air. |
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| 49. |
What it the newest element which is found ????????????????????? |
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Answer» What it the newest element which is found ????????????????????? |
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| 50. |
Name the gas/gases when an electric current is passed through water. |
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Answer» Name the gas/gases when an electric current is passed through water. |
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