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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.
| 1301. |
24 why aqueous solution of H2O2 is weakly acidic? |
| Answer» 24 why aqueous solution of H2O2 is weakly acidic? | |
| 1302. |
Why is 2nd ip of copper higher than zinc? |
| Answer» Why is 2nd ip of copper higher than zinc? | |
| 1303. |
Positive kernel and mobile electron |
| Answer» Positive kernel and mobile electron | |
| 1304. |
What is nucleofugacity? |
| Answer» What is nucleofugacity? | |
| 1305. |
Write three uses of bases. [3 MARKS] |
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Answer» Write three uses of bases. [3 MARKS] |
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| 1306. |
what is alkaline solution |
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Answer» what is alkaline solution |
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| 1307. |
Mention two man-made and two natural sources of air pollution. |
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Answer» Mention two man-made and two natural sources of air pollution. |
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| 1308. |
Boiling point is the temperature at which _________ is converted into ____________at one atmospheric pressure? |
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Answer» Boiling point is the temperature at which _________ is converted into ____________at one atmospheric pressure? |
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| 1309. |
How we place elements on periodic table?? |
| Answer» How we place elements on periodic table?? | |
| 1310. |
Question 2How can you help in reducing the problem of waste disposal? Give any two methods. |
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Answer» Question 2 |
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| 1311. |
The sum of "number of filled orbitals" and "number of vacant orbitals" upto valence shell of Fe is |
| Answer» The sum of "number of filled orbitals" and "number of vacant orbitals" upto valence shell of Fe is | |
| 1312. |
Which of these substances is/are present in impure water? |
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Answer» Which of these substances is/are present in impure water? |
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| 1313. |
Question 21You are given two samples of water labelled as 'A' and 'B'. Sample 'A' boils at 100∘C and sample 'B' boils at 102∘C. Which sample of water will not freeze at 0∘C? |
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Answer» Question 21 You are given two samples of water labelled as 'A' and 'B'. Sample 'A' boils at 100∘C and sample 'B' boils at 102∘C. Which sample of water will not freeze at 0∘C? |
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| 1314. |
Name any four useful products other than wood, which we get from forests. |
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Answer» Name any four useful products other than wood, which we get from forests. |
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| 1315. |
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.(a) Do you think rust is different from iron?(b) Can you change rust back into iron by some simple method?(c) Do you think the formation of rust on iron is a chemical change? |
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Answer» If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust. (a) Do you think rust is different from iron? (b) Can you change rust back into iron by some simple method? (c) Do you think the formation of rust on iron is a chemical change? |
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| 1316. |
Explain what are double displacement reactions with an example? |
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Answer» Explain what are double displacement reactions with an example? |
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| 1317. |
What is the percentage of water vapour present in the earth’s atmosphere? |
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Answer» What is the percentage of water vapour present in the earth’s atmosphere? |
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| 1318. |
N2(g)+3H2(g)→2NH3(g);ΔH=−22kcalActivation energy, Ea for the given reaction is 70 kcal. Find the activation energy for 2NH3(g)→N2(g)+3H2(g) in kcal. |
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Answer» N2(g)+3H2(g)→2NH3(g);ΔH=−22kcal Activation energy, Ea for the given reaction is 70 kcal. Find the activation energy for 2NH3(g)→N2(g)+3H2(g) in kcal. |
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| 1319. |
Which one of the following can be considered as 'pure'? |
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Answer» Which one of the following can be considered as 'pure'? |
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| 1320. |
Two radioactive nuclides A and B have half life 100 and 50 min respectively. A fresh sample contains nuclides of B to be 16 times that of A. The time required by nuclide A to become 4 times that of B is x hours. Find the value of x/5. |
| Answer» Two radioactive nuclides A and B have half life 100 and 50 min respectively. A fresh sample contains nuclides of B to be 16 times that of A. The time required by nuclide A to become 4 times that of B is x hours. Find the value of x/5. | |
| 1321. |
Describe the steps involved in getting clarified water from wastewater. |
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Answer» Describe the steps involved in getting clarified water from wastewater. |
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| 1322. |
How to find the number of electrons/ions ? |
| Answer» How to find the number of electrons/ions ? | |
| 1323. |
Which method, according to you, is the most promising in raising the water table in a city? |
| Answer» Which method, according to you, is the most promising in raising the water table in a city? | |
| 1324. |
To get her house whitewashed, an officer bought 10 kg of quicklime from the market and dissolved it in 30 litres of water.She noticed that the solution warmed up even when it was not being heated.What is the corresponding product formed and the type of reaction involved? |
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Answer» To get her house whitewashed, an officer bought 10 kg of quicklime from the market and dissolved it in 30 litres of water. |
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| 1325. |
Fluorine molecule is formed by sharing a pair of electrons by fluorine atoms. What kind of bond is formed? |
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Answer» Fluorine molecule is formed by sharing a pair of electrons by fluorine atoms. What kind of bond is formed? |
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| 1326. |
Which of the following is not a base? |
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Answer» Which of the following is not a base? |
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| 1327. |
Why iron pillar in qutub minar has not rusted? |
| Answer» Why iron pillar in qutub minar has not rusted? | |
| 1328. |
Question 22Write two important uses of coke. |
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Answer» Question 22 Write two important uses of coke. |
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| 1329. |
The percentage by weight of carbon in ethane is: |
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Answer» The percentage by weight of carbon in ethane is: |
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| 1330. |
Hand pumps and deep boring pipes were installed in an area to cater to the water scarcity there. Is this a good practice? Name some alternative measures which ensure enough water supply? [3 MARKS] |
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Answer» Hand pumps and deep boring pipes were installed in an area to cater to the water scarcity there. Is this a good practice? Name some alternative measures which ensure enough water supply? [3 MARKS] |
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| 1331. |
WHAT IS CHEMICAL DECOMPOSITION |
| Answer» WHAT IS CHEMICAL DECOMPOSITION | |
| 1332. |
What is soil erosion? How it can be prevented? |
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Answer» What is soil erosion? How it can be prevented? |
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| 1333. |
19.Which of the following pairs of compound illustrate law of multiple proportions? (2) H2O, D20(1) KOH, CSOH(3) Ethane, benzene(4) KCI, KBr how option 3 is correct |
| Answer» 19.Which of the following pairs of compound illustrate law of multiple proportions? (2) H2O, D20(1) KOH, CSOH(3) Ethane, benzene(4) KCI, KBr how option 3 is correct | |
| 1334. |
Identify the regions in India where vast reserves of natural gas are found. |
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Answer» Identify the regions in India where vast reserves of natural gas are found. |
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| 1335. |
What happens to the heat energy when a substance changes from solid to liquid? |
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Answer» What happens to the heat energy when a substance changes from solid to liquid? |
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| 1336. |
The force of attraction between two bodies is F. If the distance between them is doubled, the force will be: |
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Answer» The force of attraction between two bodies is F. If the distance between them is doubled, the force will be: |
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| 1337. |
Trees have crowns of different types and sizes, this creates different horizontal layers in the forest, these are known as __. |
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Answer» Trees have crowns of different types and sizes, this creates different horizontal layers in the forest, these are known as |
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| 1338. |
Classify the following substances as acidic, basic and neutral. HCl, NaCl, MgO, KCl, CaO, H2SO4, HNO3, H2O, Na2CO3 |
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Answer» Classify the following substances as acidic, basic and neutral. HCl, NaCl, MgO, KCl, CaO, H2SO4, HNO3, H2O, Na2CO3
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| 1339. |
What is the chemical equation and chemical reaction for magnesium ribbon? |
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Answer» What is the chemical equation and chemical reaction for magnesium ribbon? |
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| 1340. |
25. An organic compound is composed of 4.58% H,40.92% C and 54.50% oxygen. What would be theempirical formula of the compound? |
| Answer» 25. An organic compound is composed of 4.58% H,40.92% C and 54.50% oxygen. What would be theempirical formula of the compound? | |
| 1341. |
What is the chemical name for lime water |
| Answer» What is the chemical name for lime water | |
| 1342. |
Look at Figure which shows three situations (a) a burning candle (b) an extinguished candle (c) melting wax. Which of these shows a reversible change and why? |
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Answer» Look at Figure which shows three situations (a) a burning candle (b) an extinguished candle (c) melting wax. Which of these shows a reversible change and why?  |
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| 1343. |
What is the approximate half life pf a substance if 87.5 % complete in 69 min . If it follows zero order kinetics |
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Answer» What is the approximate half life pf a substance if 87.5 % complete in 69 min . If it follows zero order kinetics |
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| 1344. |
What are the advantages of boiling water for drinking? |
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Answer» What are the advantages of boiling water for drinking? |
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| 1345. |
The tastes of vinegar and soap respectively are: |
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Answer» The tastes of vinegar and soap respectively are: |
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| 1346. |
Which of the following is/are not true for an acid? |
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Answer» Which of the following is/are not true for an acid? |
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| 1347. |
The total number of electrons in a neutral calcium atom is: |
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Answer» The total number of electrons in a neutral calcium atom is: |
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| 1348. |
What is the value of 1 amu in kg?? |
| Answer» What is the value of 1 amu in kg?? | |
| 1349. |
Which of the following solution is not likely to create a burning sensation on our skin? |
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Answer» Which of the following solution is not likely to create a burning sensation on our skin? |
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| 1350. |
What would happen when a blue litmus paper is treated with a solution containing HNO3? [2 MARKS] |
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Answer» What would happen when a blue litmus paper is treated with a solution containing HNO3? [2 MARKS] |
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