InterviewSolution
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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.
| 51. |
How can we save petrol/diesel while driving? |
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Answer» How can we save petrol/diesel while driving? |
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| 52. |
What steps would you suggest for the judicious use of fossil fuels? |
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Answer» What steps would you suggest for the judicious use of fossil fuels? |
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| 53. |
1.25.5 g of H2O2 solution on decomposition gave 1.68 l O2 at STP the percentage strength by weight of the solution is |
| Answer» 1.25.5 g of H2O2 solution on decomposition gave 1.68 l O2 at STP the percentage strength by weight of the solution is | |
| 54. |
Why is it essential to wash fruits well before eating them? |
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Answer» Why is it essential to wash fruits well before eating them? |
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| 55. |
Question 2Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions(a) Low temperature, low pressure(b) High temperature, low pressure(c) Low temperature, high pressure(d) High temperature, high pressure |
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Answer» Question 2 Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions (a) Low temperature, low pressure (b) High temperature, low pressure (c) Low temperature, high pressure (d) High temperature, high pressure |
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| 56. |
Untreated sewage is discharged into the rivers. How will it affect the population of aquatic animals in the river? |
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Answer» Untreated sewage is discharged into the rivers. How will it affect the population of aquatic animals in the river? |
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| 57. |
What should we do in case of accidental contact with a dangerous chemical? |
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Answer» What should we do in case of accidental contact with a dangerous chemical? |
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| 58. |
calculate the weight of calcium in calcium nitride having 7g of nitrogen?Can we use law of equivalence for molecule also? |
| Answer» calculate the weight of calcium in calcium nitride having 7g of nitrogen?Can we use law of equivalence for molecule also? | |
| 59. |
Explain coordinate dative bonds? |
| Answer» Explain coordinate dative bonds? | |
| 60. |
What will be the volume of air required to completely burn 12 g of carbon at STP (air contains 21% oxygen by volume)? |
| Answer» What will be the volume of air required to completely burn 12 g of carbon at STP (air contains 21% oxygen by volume)? | |
| 61. |
When treated with dilute hydrochloric acid, which of the following gives a gas which does not turn lime water milky?(1) sodium sulphate(2) sodium carbonate (3) copper metal(4) zinc metal |
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Answer» When treated with dilute hydrochloric acid, which of the following gives a gas which does not turn lime water milky? (1) sodium sulphate (2) sodium carbonate (3) copper metal (4) zinc metal |
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| 62. |
What is the significance of 6 and 10 in Nylon 6 10? |
| Answer» What is the significance of 6 and 10 in Nylon 6 10? | |
| 63. |
“The new HitItFar driver is the only golf club that uses space-age Titanium-Kryptonium alloy to strengthen its head. This driver is SO good, the last 12 winners of the major tour championships have all recently switched to it! Isn’t it time for you to add power to your swing and distance to your drives? Trade in your old driver today — and HitItFar tomorrow!” All of the following claims are either implied or made explicitly in the above advertisement EXCEPT: |
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Answer» “The new HitItFar driver is the only golf club that uses space-age Titanium-Kryptonium alloy to strengthen its head. This driver is SO good, the last 12 winners of the major tour championships have all recently switched to it! Isn’t it time for you to add power to your swing and distance to your drives? Trade in your old driver today — and HitItFar tomorrow!” All of the following claims are either implied or made explicitly in the above advertisement EXCEPT: |
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| 64. |
State two uses of melamine. |
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Answer» State two uses of melamine. |
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| 65. |
Do liquids show compressibility?if not why? |
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Answer» Do liquids show compressibility?if not why? |
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| 66. |
Give scientific reasons.(a) Buttermilk is churned to get butter .(b) In chromatography, the ingredients of a mixture rise up to a limited height water rises up to upper end of the paper .(c) A wet cloth is wrapped around a water storage container in summer . |
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Answer» Give scientific reasons. (a) Buttermilk is churned to get butter . (b) In chromatography, the ingredients of a mixture rise up to a limited height water rises up to upper end of the paper . (c) A wet cloth is wrapped around a water storage container in summer . |
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| 67. |
Which of the following pair will give displacement reaction? |
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Answer» Which of the following pair will give displacement reaction? |
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| 68. |
The radius of the nucleus of an atom is approximately |
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Answer» The radius of the nucleus of an atom is approximately |
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| 69. |
If expose copper in water for a long time will it react with it |
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Answer» If expose copper in water for a long time will it react with it |
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| 70. |
People usually keep Angethi/burning coal in their closed rooms during the winter season. Why is it advised to keep the door open? |
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Answer» People usually keep Angethi/burning coal in their closed rooms during the winter season. Why is it advised to keep the door open? |
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| 71. |
What exactly is phase or phase difference? |
| Answer» What exactly is phase or phase difference? | |
| 72. |
Why CaCl2 reacts with Al to form AlCl3 and Ca if Aluminum is less reactive then Calcium? |
| Answer» Why CaCl2 reacts with Al to form AlCl3 and Ca if Aluminum is less reactive then Calcium? | |
| 73. |
Why bitumen is used nowadays instead of coal tar ? |
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Answer» Why bitumen is used nowadays instead of coal tar ? |
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| 74. |
What is precipitate? Briefly explain. |
| Answer» What is precipitate? Briefly explain. | |
| 75. |
181 There are two radio nuclei A and B. A is an alpha emitter and B is a beta emitter. Their disintegration constants are in the ratio of 1:2. What should be the ratio of number of atoms of A snd B at sny time so that probabilities of getting alpha and beta particles are same at that instant. |
| Answer» 181 There are two radio nuclei A and B. A is an alpha emitter and B is a beta emitter. Their disintegration constants are in the ratio of 1:2. What should be the ratio of number of atoms of A snd B at sny time so that probabilities of getting alpha and beta particles are same at that instant. | |
| 76. |
To make a saturated solution, 30 grams of sodium chloride is dissolved in 100 grams of water at 293K. Find its concentration (mass by mass percentage) at this temperature. |
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Answer» To make a saturated solution, 30 grams of sodium chloride is dissolved in 100 grams of water at 293K. Find its concentration (mass by mass percentage) at this temperature. |
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| 77. |
What would be the gravitational potential energy of an object whose mass is 1 kg and is at a height of 10 meters? |
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Answer» What would be the gravitational potential energy of an object whose mass is 1 kg and is at a height of 10 meters? |
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| 78. |
Equal moles of hydrogen and oxygen are placed in container with a pin hole through which both can escape What fraction of oxygen escapes in the time required for one half of the hydrogen to escape |
| Answer» Equal moles of hydrogen and oxygen are placed in container with a pin hole through which both can escape What fraction of oxygen escapes in the time required for one half of the hydrogen to escape | |
| 79. |
संस्मरण में आए अंग्रेज़ी के शब्दों को छाँटकर लिखो और उनके हिंदी अर्थ जानो। |
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Answer»
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| 80. |
Is principal of multiple proportion is applicable for compound having more than two contituent atom? |
| Answer» Is principal of multiple proportion is applicable for compound having more than two contituent atom? | |
| 81. |
Which among the given options is the use of oxygen? |
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Answer» Which among the given options is the use of oxygen? |
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| 82. |
Distinguish between a. Manmade material and natural material b. Thermoplastic and thermosetting plastic. |
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Answer» Distinguish between a. Manmade material and natural material b. Thermoplastic and thermosetting plastic. |
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| 83. |
Question 54An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved. |
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Answer» Question 54 |
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| 84. |
Which of the following metals on reacting with sodium hydroxide solution produce hydrogen gas?A. Cu B. AlC. Fe D. Zn |
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Answer» Which of the following metals on reacting with sodium hydroxide solution produce hydrogen gas? A. Cu B. Al C. Fe D. Zn |
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| 85. |
54. Find the total no. Of atoms when 17 g of NH_3 is added to 90g of water. |
| Answer» 54. Find the total no. Of atoms when 17 g of NH_3 is added to 90g of water. | |
| 86. |
Explain differentiation with with respect to new variable in detail. |
| Answer» Explain differentiation with with respect to new variable in detail. | |
| 87. |
Match the following. ‘A’ ‘B’ (a) Melting point 1. Separating common salt and water from their mixture. (b) Boiling point 2. Obtaining diesel from crude oil (c) Fractional distillation 3. Change of state of a liquid into a gas. (d) Distillation 4. Change of state from solid to liquid. |
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Answer» Match the following.
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| 88. |
Mark(&mnTick;)the correct answer.Rayon isdifferent from synthetic fibres because(a) it hasa silk-like appearance.(b) it isobtained from wood pulp.(c) itsfibres can also be woven like those of natural fibres. |
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Answer» Mark Rayon is (a) it has (b) it is (c) its |
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| 89. |
Question 5Which of the following statements about Rutherford's model of atom are correct?(i) Considered the nucleus as positively charged.(ii) Established that the a-particles are four times as heavy as a hydrogen atom.(iii) Can be compared to solar system.(iv) Was in agreement with Thomson's model. (a) (i) and (iii)(b) (ii) and (iii)(c) (i) and (iv)(d) only (i) |
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Answer» Question 5 Which of the following statements about Rutherford's model of atom are correct? (i) Considered the nucleus as positively charged. (ii) Established that the a-particles are four times as heavy as a hydrogen atom. (iii) Can be compared to solar system. (iv) Was in agreement with Thomson's model. (a) (i) and (iii) (b) (ii) and (iii) (c) (i) and (iv) (d) only (i) |
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| 90. |
If a body is raised to a height then it gains potential energy so if the body goes at a very big height and gains a high pe then when escapes into space where there is no gravity where does the pe goes I got the answer in byjus before also but can you give the answer with a example |
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Answer» If a body is raised to a height then it gains potential energy so if the body goes at a very big height and gains a high pe then when escapes into space where there is no gravity where does the pe goes I got the answer in byjus before also but can you give the answer with a example |
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| 91. |
Heating of coal in the absence of air is known as: |
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Answer» Heating of coal in the absence of air is known as: |
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| 92. |
Fossils are common in which type of rocks? |
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Answer» Fossils are common in which type of rocks? |
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| 93. |
A mixture of N2 and H2 is caused to react in a closed container to form Nh3. Reaction ceases before any reactant has been totally consumed.At this stage 2 moles each of N2, H2 and Nh3 are present. Weight of N2 and H2 present originally were |
| Answer» A mixture of N2 and H2 is caused to react in a closed container to form Nh3. Reaction ceases before any reactant has been totally consumed.At this stage 2 moles each of N2, H2 and Nh3 are present. Weight of N2 and H2 present originally were | |
| 94. |
Does rearrangement in carbocation take place in Markonikofs rule? |
| Answer» Does rearrangement in carbocation take place in Markonikofs rule? | |
| 95. |
75 What is the hybridisation of of Nickel in [Ni(CO)4] |
| Answer» 75 What is the hybridisation of of Nickel in [Ni(CO)4] | |
| 96. |
What are the methods of reducing air pollution? [5 MARKS] |
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Answer» What are the methods of reducing air pollution? [5 MARKS] |
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| 97. |
Question 7.4Write the balanced chemical equation for the following reaction:Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride |
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Answer» Question 7.4 Write the balanced chemical equation for the following reaction: Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride |
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| 98. |
The temporary hardness of water can be removed by Clark's Method using _____. |
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Answer» The temporary hardness of water can be removed by Clark's Method using _____. |
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| 99. |
Shamli took a piece of burning charcoal and collected the gas evolved in a test tube. The gas settled at the bottom of the test tube. Which of the following observations is correct? |
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Answer» Shamli took a piece of burning charcoal and collected the gas evolved in a test tube. The gas settled at the bottom of the test tube. Which of the following observations is correct? |
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| 100. |
What is the difference between the smallest particle of an element and the smallest particle of a compound? |
| Answer» What is the difference between the smallest particle of an element and the smallest particle of a compound? | |