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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 4551. |
What did Rutherford conclude from his experiment regarding the central part of an atom? |
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Answer» What did Rutherford conclude from his experiment regarding the central part of an atom? |
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| 4552. |
Write the full form of PCRA. |
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Answer» Write the full form of PCRA. |
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| 4553. |
Question 13 Terrycot is made by mixing two types of fibres. Write the names of the fibres. |
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Answer» Question 13 Terrycot is made by mixing two types of fibres. Write the names of the fibres. |
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| 4554. |
Why sun is hot? What makes it hot? |
| Answer» Why sun is hot? What makes it hot? | |
| 4555. |
Some examples which are not the part of matter |
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Answer» Some examples which are not the part of matter |
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| 4556. |
The substance W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. When W is subjected to a process called Y, then a number of different products are collected at different temperature ranges which are put to different uses. A special grade of product Z obtained in this way is used as aviation fuel in jet aeroplanes. (a) What are (i) W, and (ii) X ? (b) What is the physical state of (i) W, and (ii) X ? (c) Name the process Y. (d) Name the product Z. |
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Answer» The substance W is a fossil fuel. It occurs deep below the ground in certain areas of the earth. Another fossil fuel X is found trapped above the deposits of W. When W is subjected to a process called Y, then a number of different products are collected at different temperature ranges which are put to different uses. A special grade of product Z obtained in this way is used as aviation fuel in jet aeroplanes. (a) What are (i) W, and (ii) X ? (b) What is the physical state of (i) W, and (ii) X ? (c) Name the process Y. (d) Name the product Z. |
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| 4557. |
Glass is chemically ___ in nature. |
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Answer» Glass is chemically |
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| 4558. |
When fast moving gaseous particles slows down we might witness the following things ___________ |
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Answer» When fast moving gaseous particles slows down we might witness the following things ___________ |
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| 4559. |
Is water conservation necessary? Give reasons. [2 MARKS] |
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Answer» Is water conservation necessary? Give reasons. [2 MARKS] |
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| 4560. |
Match the following elements with their atomic mass. (i) Magnesium (ii) Carbon (iii) Oxygen (iv) Sulphur (a) 32 (b) 16 (c) 12 (d) 24 |
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Answer» Match the following elements with their atomic mass. (i) Magnesium (ii) Carbon (iii) Oxygen (iv) Sulphur (a) 32 (b) 16 (c) 12 (d) 24 |
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| 4561. |
A purple coloured non-metal forms a brown solution in alchohol which is applied on wounds as an antiseptic. Name the non-metal. |
| Answer» A purple coloured non-metal forms a brown solution in alchohol which is applied on wounds as an antiseptic. Name the non-metal. | |
| 4562. |
Identify the term that is generally used to express the quality of a gasoline. |
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Answer» Identify the term that is generally used to express the quality of a gasoline. |
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| 4563. |
What happens when a piece of copper metal is placed in iron sulphate solution? |
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Answer» What happens when a piece of copper metal is placed in iron sulphate solution? |
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| 4564. |
Why does a protective layer form only on aluminium after corrosion? Why does it not happen for other metals too? |
| Answer» Why does a protective layer form only on aluminium after corrosion? Why does it not happen for other metals too? | |
| 4565. |
Which is the best fire extinguisher for fires involving electrical equipment and inflammable materials like petrol ? |
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Answer» Which is the best fire extinguisher for fires involving electrical equipment and inflammable materials like petrol ? |
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| 4566. |
What is an electrolytic conductor? |
| Answer» What is an electrolytic conductor? | |
| 4567. |
Name the metallic property due to which metal bells works. |
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Answer» Name the metallic property due to which metal bells works. |
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| 4568. |
Why is sodium stored in kerosene in a laboratory? |
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Answer» Why is sodium stored in kerosene in a laboratory? |
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| 4569. |
Atomic mass of an element is 1. This element has _______ present in the nucleus of its atom. |
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Answer» Atomic mass of an element is 1. This element has _______ present in the nucleus of its atom. |
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| 4570. |
Match Column-I with Colum –II and select the correct answer using the codes given below the columns. Column−1Column−II(Fraction of petroleum)(Main uses)A.KeroseneP.Road constructionsB.DieselQ.Cooking stovesC.Paraffin WaxR.Generation of electricityD.BitumenS.Manufacture of candles |
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Answer» Match Column-I with Colum –II and select the correct answer using the codes given below the columns. |
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| 4571. |
Q70. Consider the following statements about Tar sands. 1. It is a combination of clay, water and bitumen. 2. Open Pit Mining technique is used for mining Tar sands. 3. The processing of Tar sands involve minimal environmental impacts. Which of the above statement(s) is/are correct? |
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Answer» Q70. Consider the following statements about Tar sands. 1. It is a combination of clay, water and bitumen. 2. Open Pit Mining technique is used for mining Tar sands. 3. The processing of Tar sands involve minimal environmental impacts. Which of the above statement(s) is/are correct? |
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| 4572. |
Name two places in India where coal is found. |
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Answer» Name two places in India where coal is found. |
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| 4573. |
What is a chemical equation? |
| Answer» What is a chemical equation? | |
| 4574. |
Which of the following is being used as a source of hydrogen gas needed to manufacture fertilisers ?(a) Biogas(b) Natural gas(c) Coal gas(d) Petroleum gas |
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Answer» Which of the following is being used as a source of hydrogen gas needed to manufacture fertilisers ? (a) Biogas (b) Natural gas (c) Coal gas (d) Petroleum gas |
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| 4575. |
Water is used to cool radiators of engines, because _______ |
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Answer» Water is used to cool radiators of engines, because _______ |
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| 4576. |
Do all flameshave the same temperature |
| Answer» Do all flameshave the same temperature | |
| 4577. |
Give the important uses of nylon. |
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Answer» Give the important uses of nylon. |
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| 4578. |
The chemical formulae for carbon monoxide is |
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Answer» The chemical formulae for carbon monoxide is |
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| 4579. |
Consider the following: 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain? |
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Answer» Consider the following: 1. Oxides of Hydrogen 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above causes/cause acid rain? |
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| 4580. |
Why do different metals produce flames of different colours? |
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Answer» Why do different metals produce flames of different colours? |
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| 4581. |
Why solid, liquid and gas have different properties? |
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Answer» Why solid, liquid and gas have different properties? |
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| 4582. |
What is OTEC? How does it work? [3 MARKS] |
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Answer» What is OTEC? How does it work? [3 MARKS] |
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| 4583. |
What is the mass ratio of nitrogen to hydrogen in a NH3 molecule? |
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Answer» What is the mass ratio of nitrogen to hydrogen in a NH3 molecule? |
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| 4584. |
What is the symbol of manganese? |
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Answer» What is the symbol of manganese? |
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| 4585. |
Why don,t we use hydrogen as a fuel? |
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Answer» Why don,t we use hydrogen as a fuel? |
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| 4586. |
Question 1 Air is a mixture of various gases. One of the gases constitutes 21% part of the air and is essential for the survival of human beings. This gas is: (a) Nitrogen (b) Oxygen (c) Ozone (d) Argon |
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Answer» Question 1 |
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| 4587. |
Energy is neither created nor destroyed. |
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Answer» Energy is neither created nor destroyed. |
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| 4588. |
Both petroleum and coal are fossil fuels. Then why do they differ in their method of formation? |
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Answer» Both petroleum and coal are fossil fuels. Then why do they differ in their method of formation? |
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| 4589. |
Define the following 1)atom 2)atomic number 3)valency |
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Answer» Define the following 1)atom 2)atomic number 3)valency |
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| 4590. |
The apparatus in which electrolysis of an electrolyte takes place is known as ___. |
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Answer» The apparatus in which electrolysis of an electrolyte takes place is known as |
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| 4591. |
By looking at the formula of SO2 compound, could you identify the more electronegative of the two elements? |
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Answer» By looking at the formula of SO2 compound, could you identify the more electronegative of the two elements? |
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| 4592. |
Are synthetic fibres filaments? |
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Answer» Are synthetic fibres filaments? |
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| 4593. |
Which one of the following set of non-metals has shining lustrous surfaces? |
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Answer» Which one of the following set of non-metals has shining lustrous surfaces? |
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| 4594. |
A substance X burns vigorously in a jar of oxygen with a brick red flame to form its oxide 'Y' which is a white powder. Which substance is X ? |
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Answer» A substance X burns vigorously in a jar of oxygen with a brick red flame to form its oxide 'Y' which is a white powder. Which substance is X ? |
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| 4595. |
2000 J of heat is required to melt 40 Kg of substance, then the specific latent heat of substance is |
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Answer» 2000 J of heat is required to melt 40 Kg of substance, then the specific latent heat of substance is |
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| 4596. |
Which of the following is used in pencils? |
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Answer» Which of the following is used in pencils? |
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| 4597. |
What is the formula of ferric oxide |
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Answer» What is the formula of ferric oxide |
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| 4598. |
Fill in the blanks: Metals are good conductors of heat and___. |
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Answer» Fill in the blanks: Metals are good conductors of heat and |
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| 4599. |
What is tightness? |
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Answer» What is tightness? |
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| 4600. |
Question 10 A pond contains clean water. Which of the following activities will produce least pollution of water? (a) washing clothes in the pond (b) animals bathing in the pond (c) washing motor vehicles in the pond (d) swimming in the pond |
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Answer» Question 10 |
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