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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.
| 3301. |
Nitric oxide gas at2.0atm and oxygengas at 1atm are injected simultneusly through pin hole of identical area of crooss section at the opposite end of a circular glass tube the length of tube is 1.0and gassesare kept at same temp. Determine the distnce from o2 end at which first flash of brown fume wolud be observsd |
| Answer» Nitric oxide gas at2.0atm and oxygengas at 1atm are injected simultneusly through pin hole of identical area of crooss section at the opposite end of a circular glass tube the length of tube is 1.0and gassesare kept at same temp. Determine the distnce from o2 end at which first flash of brown fume wolud be observsd | |
| 3302. |
Apart from heat and fuel, which other component is essential to start a fire ? |
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Answer» Apart from heat and fuel, which other component is essential to start a fire ? |
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| 3303. |
What are metallic bonds? |
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Answer» What are metallic bonds? |
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| 3304. |
What products are formed when iron(Fe) react with dilute hydrochloric acid (HCl)? |
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Answer» What products are formed when iron(Fe) react with dilute hydrochloric acid (HCl)? |
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| 3305. |
Name the form of polyester which is replacing materials like glass and used for making bottles and jars. |
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Answer» Name the form of polyester which is replacing materials like glass and used for making bottles and jars. |
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| 3306. |
Question 6A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron? |
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Answer» Question 6 A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron? |
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| 3307. |
Identify the product that is produced by baking coal in a heated oven. |
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Answer» Identify the product that is produced by baking coal in a heated oven. |
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| 3308. |
Question 63Of the three metals X, Y and Z, X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity. |
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Answer» Question 63 |
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| 3309. |
Pressure exerted by a perfect gas is equal to |
| Answer» Pressure exerted by a perfect gas is equal to | |
| 3310. |
What is meant by refining of a metal? Name the most widely used methods of refining impure metals produced by various reduction processes. Describe with the help of a labelled diagram how this method may be used for refining of copper. |
| Answer» What is meant by refining of a metal? Name the most widely used methods of refining impure metals produced by various reduction processes. Describe with the help of a labelled diagram how this method may be used for refining of copper. | |
| 3311. |
efficiency of a heat engine working between a given source and sink is 0.5 coefficient of performance of the refrigerator working between the same source and the sink will be |
| Answer» efficiency of a heat engine working between a given source and sink is 0.5 coefficient of performance of the refrigerator working between the same source and the sink will be | |
| 3312. |
When carbon burns in air, carbon dioxide is formed. What type of reaction is that? |
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Answer» When carbon burns in air, carbon dioxide is formed. What type of reaction is that? |
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| 3313. |
How to balance chemical equations? |
| Answer» How to balance chemical equations? | |
| 3314. |
Explain value of km with respect to temperature change |
| Answer» Explain value of km with respect to temperature change | |
| 3315. |
Identify the measures which could be taken to stop a fire. |
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Answer» Identify the measures which could be taken to stop a fire. |
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| 3316. |
Which of the following statement is wrong in case of sodium chloride? |
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Answer» Which of the following statement is wrong in case of sodium chloride? |
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| 3317. |
What do we understand by activation energy? |
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Answer» What do we understand by activation energy? |
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| 3318. |
Bakelite and polythene are both plastics. However, there is one major difference in their nature. What is the difference? |
| Answer» Bakelite and polythene are both plastics. However, there is one major difference in their nature. What is the difference? | |
| 3319. |
where are the imaginary numbers used? |
| Answer» where are the imaginary numbers used? | |
| 3320. |
Metals are ___________ of electricity. |
| Answer» Metals are ___________ of electricity. | |
| 3321. |
19.The rate constant varies as logk=10-9.6×10 2/T then the activation energy of the reaction |
| Answer» 19.The rate constant varies as logk=10-9.6×10 2/T then the activation energy of the reaction | |
| 3322. |
Where is dilute hydrochloric acid present in the human body? |
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Answer» Where is dilute hydrochloric acid present in the human body? |
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| 3323. |
Suggest a method to liquefy atmospheric gases. |
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Answer» Suggest a method to liquefy atmospheric gases. |
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| 3324. |
Give a case study on gangs action plan |
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Answer» Give a case study on gangs action plan |
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| 3325. |
Explain the difference between polythene and bakelite. [3 MARKS] |
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Answer» Explain the difference between polythene and bakelite. [3 MARKS] |
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| 3326. |
If we increase the polarity of the solvent how will it affectp the rate of S_N 1 & S_N2 reaction |
| Answer» If we increase the polarity of the solvent how will it affectp the rate of S_N 1 & S_N2 reaction | |
| 3327. |
How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water? |
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Answer» How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water? |
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| 3328. |
Question 1 (iii)Which metal is the best conductor of heat? |
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Answer» Question 1 (iii) Which metal is the best conductor of heat? |
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| 3329. |
Look at Fig. 5.1 where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer? |
Answer» Look at Fig. 5.1 where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer? |
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| 3330. |
Define water of crystallisation. Give an example. |
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Answer» Define water of crystallisation. Give an example. |
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| 3331. |
When water solidifies to ice, then heat is ___. |
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Answer» When water solidifies to ice, then heat is ___. |
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| 3332. |
What is meant by solute and solvent? Explain with example. [3 MARKS] |
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Answer» What is meant by solute and solvent? Explain with example. [3 MARKS] |
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| 3333. |
Which dangerous pollutant is given off if a fuel while burning does not get sufficient air? |
| Answer» Which dangerous pollutant is given off if a fuel while burning does not get sufficient air? | |
| 3334. |
What is Shielding effect. |
| Answer» What is Shielding effect. | |
| 3335. |
The evaporation of a liquid would be fastest in: |
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Answer» The evaporation of a liquid would be fastest in: |
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| 3336. |
Write briefly about deodorant and mention its harmful effect. |
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Answer» Write briefly about deodorant and mention its harmful effect. |
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| 3337. |
Water cannot be used to extinguish |
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Answer» Water cannot be used to extinguish |
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| 3338. |
Sir/madam please explain me about reduction and oxidation and also explain briefly about the rate of chemical reaction and the factors influencing rate of chemical reaction |
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Answer» Sir/madam please explain me about reduction and oxidation and also explain briefly about the rate of chemical reaction and the factors influencing rate of chemical reaction |
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| 3339. |
Explain how CO2 is able to control fires. |
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Answer» Explain how CO2 is able to control fires. |
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| 3340. |
Does eq wt of some compounds depend on formula |
| Answer» Does eq wt of some compounds depend on formula | |
| 3341. |
What are Cryogenic Fuels? |
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Answer» What are Cryogenic Fuels? |
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| 3342. |
, Na & K on heating in excess of air form oxide respectively :-(1)Li2O, Na2O2 & KO2(2)LiO2, Na2O2 & K2O(3)Li2O, N2O & K2O(4)Li2O2, Na2O2 & K2O2 |
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Answer» , Na & K on heating in excess of air form oxide respectively :- (1) Li2O, Na2O2 & KO2 (2) LiO2, Na2O2 & K2O (3) Li2O, N2O & K2O (4) Li2O2, Na2O2 & K2O2 |
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| 3343. |
20. Conjugate acid of Zn(OH)2 is (1) Zn(OH)+ (2) Zn(OH)3 (3) Zn2+ (4) Zn(H2O)+ |
| Answer» 20. Conjugate acid of Zn(OH)2 is (1) Zn(OH)+ (2) Zn(OH)3 (3) Zn2+ (4) Zn(H2O)+ | |
| 3344. |
Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason. |
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Answer» Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason. |
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| 3345. |
Which of the following is/are the properties of a colloid? |
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Answer» Which of the following is/are the properties of a colloid? |
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| 3346. |
If the masses of Cr and O are in ratio 13:12 in CrO3 then the ratio if O that combinrs with the same mass of Cr in Cr2O3 and Cr2 O7 is ? |
| Answer» If the masses of Cr and O are in ratio 13:12 in CrO3 then the ratio if O that combinrs with the same mass of Cr in Cr2O3 and Cr2 O7 is ? | |
| 3347. |
Question1Why does the colour of copper sulphate solution change when an iron nail is dipped in it? |
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Answer» Question1 Why does the colour of copper sulphate solution change when an iron nail is dipped in it? |
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| 3348. |
The atoms or molecules of a solid are always arranged in a regular pattern. Do you agree? Give reasons. |
| Answer» The atoms or molecules of a solid are always arranged in a regular pattern. Do you agree? Give reasons. | |
| 3349. |
Name two industrial air pollutant. |
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Answer» Name two industrial air pollutant. |
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| 3350. |
91 An atom has 2K , 8L and 5M electrons.Choose the correct statement regarding it A A trivalent atom of this atom will have 12 protons in its nucleus B Trivalent cation of this atom will have six-p electrons in it C These atoms form an amphoteric oxide of formula X2O3 D One of its allotrope is tetra atomic (X4) |
| Answer» 91 An atom has 2K , 8L and 5M electrons.Choose the correct statement regarding it A A trivalent atom of this atom will have 12 protons in its nucleus B Trivalent cation of this atom will have six-p electrons in it C These atoms form an amphoteric oxide of formula X2O3 D One of its allotrope is tetra atomic (X4) | |