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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.
| 1. |
O2 is a gas but sulphur is a solid.Explain. |
| Answer» O2 is a gas but sulphur is a solid.Explain. | |
| 2. |
two moles of n2 and two moles of h2 are taken in a vessel of 5 l capacity and suitabke conditions are provided for the reaction . when the equillibreium is reached , it is found that a half mole of n2 is used up . the equillibrium concenteration of nh3 ishere it is written half mole OF N2. wouldn't it be 0.5x2 because 2 moles of n2 are there |
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Answer» two moles of n2 and two moles of h2 are taken in a vessel of 5 l capacity and suitabke conditions are provided for the reaction . when the equillibreium is reached , it is found that a half mole of n2 is used up . the equillibrium concenteration of nh3 is here it is written half mole OF N2. wouldn't it be 0.5x2 because 2 moles of n2 are there |
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| 3. |
12. The following figure shows a siphon in action .The liquid flowing through the siphon has a density of 1.5 g/cc. Calculate the pressure difference between A) Points A and D B) Points C and B |
| Answer» 12. The following figure shows a siphon in action .The liquid flowing through the siphon has a density of 1.5 g/cc. Calculate the pressure difference between A) Points A and D B) Points C and B | |
| 4. |
How can you obtain pure water from a salt-water mixture (or salt-solution)? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from salt-water mixture (or salt-solution). |
| Answer» How can you obtain pure water from a salt-water mixture (or salt-solution)? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from salt-water mixture (or salt-solution). | |
| 5. |
Which is the smallest particle of an element that can take part in a chemical reaction? |
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Answer» Which is the smallest particle of an element that can take part in a chemical reaction? |
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| 6. |
The equivalent mass of a certain bivalent metal is 25 g. The gram molar mass of its anhydrous chloride is: |
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Answer» The equivalent mass of a certain bivalent metal is 25 g. The gram molar mass of its anhydrous chloride is: |
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| 7. |
Can a gas be converted to a liquid by compressing it? |
| Answer» Can a gas be converted to a liquid by compressing it? | |
| 8. |
Explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance |
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Answer» Explain why sodium chloride solution is regarded as a mixture while sodium chloride itself is a pure substance |
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| 9. |
Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms.a. Sodium chloride b. Potassium fluoridec.Water d. Hydrogen chloride |
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Answer» Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms. a. Sodium chloride b. Potassium fluoride c.Water d. Hydrogen chloride |
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| 10. |
Identify the solutions among the following mixtures. a. Soil b. Sea water c. Air d. Coal e. Soda water |
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Answer» Identify the solutions among the following mixtures. a. Soil b. Sea water c. Air d. Coal e. Soda water |
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| 11. |
4.wateris added to quick lime the suspension is filtered co2 is passed through the filtrate what change will observe during different stage |
| Answer» 4.wateris added to quick lime the suspension is filtered co2 is passed through the filtrate what change will observe during different stage | |
| 12. |
34 g of Ammonia decomposes to _________ g of Nitrogen and _____ g of Hydrogen. _____ is the ratio of nitrogen to hydrogen by mass. The correct options in the blanks are respectively |
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Answer» 34 g of Ammonia decomposes to _________ g of Nitrogen and _____ g of Hydrogen. _____ is the ratio of nitrogen to hydrogen by mass. The correct options in the blanks are respectively |
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| 13. |
What is the maximum number of hydrogen atoms required to attain the octet configuration by carbon? |
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Answer» What is the maximum number of hydrogen atoms required to attain the octet configuration by carbon? |
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| 14. |
Which of the following is not an emulsifier? |
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Answer» Which of the following is not an emulsifier? |
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| 15. |
How to write log[e]secx to the form log[e]cosx ? |
| Answer» How to write log[e]secx to the form log[e]cosx ? | |
| 16. |
Question 11In a sample of ethyl ethanoate (CH3COOC2H5) the two oxygen atoms have the same number of electrons but different number of neutrons; which of the following is the correct reason for it?(a) One of the oxygen atoms has gained electrons(b) One of the oxygen atoms has gained two neutrons(c) The two oxygen atoms are isotopes(d) The two oxygen atoms are isobars. |
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Answer» Question 11 In a sample of ethyl ethanoate (CH3COOC2H5) the two oxygen atoms have the same number of electrons but different number of neutrons; which of the following is the correct reason for it? (a) One of the oxygen atoms has gained electrons (b) One of the oxygen atoms has gained two neutrons (c) The two oxygen atoms are isotopes (d) The two oxygen atoms are isobars. |
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| 17. |
50 How many mole of electrons are needed to convert one mole of nitrate ion to hydrazine ? (1) 8 (2) 7 (3) 5 (4) 3 |
| Answer» 50 How many mole of electrons are needed to convert one mole of nitrate ion to hydrazine ? (1) 8 (2) 7 (3) 5 (4) 3 | |
| 18. |
Question 1 (f) Classify the following as chemical or physical changes: f. Dissolving common salt in water |
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Answer» Question 1 (f) Classify the following as chemical or physical changes: f. Dissolving common salt in water |
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| 19. |
what is atomic number |
| Answer» what is atomic number | |
| 20. |
2 Predict the highest and lowest oxidation state of (a) Ti and (b) Tl in combined state: (1) a[0,+3] b[0,+2] (2) a[+3,0] b[+4,0] (3) a[+4,0] b[+4,0] (4) a[+4,+2] b[+3,+1] |
| Answer» 2 Predict the highest and lowest oxidation state of (a) Ti and (b) Tl in combined state: (1) a[0,+3] b[0,+2] (2) a[+3,0] b[+4,0] (3) a[+4,0] b[+4,0] (4) a[+4,+2] b[+3,+1] | |
| 21. |
Good evening mentor define electronic configuration Thank you With definition |
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Answer» Good evening mentor define electronic configuration Thank you With definition |
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| 22. |
What is the difference between the rate of the reaction of a highly reactive metal and the less reactive metal? |
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Answer» What is the difference between the rate of the reaction of a highly reactive metal and the less reactive metal? |
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| 23. |
In 2S_2O_3^{2- }the oxidation no. of 1 atom of S is +6. How did its oxidation state become +8? |
| Answer» In 2S_2O_3^{2- }the oxidation no. of 1 atom of S is +6. How did its oxidation state become +8? | |
| 24. |
Why was Rutherford adamant that the electrons were constantly revolving around the atom? |
| Answer» Why was Rutherford adamant that the electrons were constantly revolving around the atom? | |
| 25. |
Which of the following is the correct electronic configuration of a sodium atom? |
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Answer» Which of the following is the correct electronic configuration of a sodium atom? |
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| 26. |
1 gram of hydrogen at 30 degree celsius is mixed with 14 g of Nitrogen at 40 degree Celsius neglating the vibrational mode the temperature of the mixture will be |
| Answer» 1 gram of hydrogen at 30 degree celsius is mixed with 14 g of Nitrogen at 40 degree Celsius neglating the vibrational mode the temperature of the mixture will be | |
| 27. |
State whether the pH of water is >7 or |
| Answer» State whether the pH of water is >7 or<7 or=7 a: a)80^° C b)-80^° C State why? | |
| 28. |
IS FIRE A STATE OF MATTER? |
| Answer» IS FIRE A STATE OF MATTER? | |
| 29. |
How covalent character is present in ionic compound |
| Answer» How covalent character is present in ionic compound | |
| 30. |
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom? |
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Answer» An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom? |
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| 31. |
Differentiate between the crystalline form of carbon and the non-crystalline form of carbon. |
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Answer» Differentiate between the crystalline form of carbon and the non-crystalline form of carbon. |
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| 32. |
The molecule that deviates from octet rule is |
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Answer» The molecule that deviates from octet rule is |
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| 33. |
According to __________, during a chemical reaction, the total mass of the products remains equal to that of reactants |
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Answer» According to __________, during a chemical reaction, the total mass of the products remains equal to that of reactants |
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| 34. |
11. how to calculate the total mass of one mole of electron |
| Answer» 11. how to calculate the total mass of one mole of electron | |
| 35. |
44. An atom of an element is 10.1 times heavier than the mass of a carbon atom. What is |
| Answer» 44. An atom of an element is 10.1 times heavier than the mass of a carbon atom. What is | |
| 36. |
What is the importance of centrifugation? How is it done? |
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Answer» What is the importance of centrifugation? How is it done? |
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| 37. |
Please explain kinetic theory of matter in detail with lucid manner?? |
| Answer» Please explain kinetic theory of matter in detail with lucid manner?? | |
| 38. |
Pure nitrogen is prepared in the laboratory by heating a mixture of: |
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Answer» Pure nitrogen is prepared in the laboratory by heating a mixture of: |
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| 39. |
which of the following is having the least ionic character fecl2 ,zncl2 , mgcl2 ,nacl kindly explai |
| Answer» which of the following is having the least ionic character fecl2 ,zncl2 , mgcl2 ,nacl kindly explai | |
| 40. |
A compund has a cubical unit cell in which A atoms are present at face center(s) and body centre. B atoms are present at 4 corners and at one-sixth of the edge centers . The simplest formula for the compound is : |
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Answer» A compund has a cubical unit cell in which A atoms are present at face center(s) and body centre. B atoms are present at 4 corners and at one-sixth of the edge centers . The simplest formula for the compound is : |
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| 41. |
In a sample of ethyl ethanoate (CH3COOC2H5), the two oxygen atoms have the same number of electrons but the different number of neutrons. Which of the following is the correct reason for it? (a) one of the oxygen atoms has gained electrons (b) one of the oxygen atoms has gained protons (c) the two oxygen atoms are isotopes (d) the two oxygen atoms are isobars |
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Answer» In a sample of ethyl ethanoate (CH3COOC2H5), the two oxygen atoms have the same number of electrons but the different number of neutrons. Which of the following is the correct reason for it? (a) one of the oxygen atoms has gained electrons (b) one of the oxygen atoms has gained protons (c) the two oxygen atoms are isotopes (d) the two oxygen atoms are isobars |
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| 42. |
What is a paste, is it same as toothpaste? What is plasma? |
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Answer» What is a paste, is it same as toothpaste? What is plasma? |
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| 43. |
Question 1How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25∘C), which are miscible with each other? |
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Answer» Question 1 How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25∘C), which are miscible with each other? |
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| 44. |
8.Solution of copper sulphate in which copper rod is dipped is diluted to 10 times the original solution. The reduction potential will be A) less than 0.03 volt B)less than 0.06 volt C) more than 0.03 volt D)more than 0.06 volt |
| Answer» 8.Solution of copper sulphate in which copper rod is dipped is diluted to 10 times the original solution. The reduction potential will be A) less than 0.03 volt B)less than 0.06 volt C) more than 0.03 volt D)more than 0.06 volt | |
| 45. |
Alkaline earth metal compounds are less soluble in water than corresponding alkali metal compounds because the former have |
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Answer» Alkaline earth metal compounds are less soluble in water than corresponding alkali metal compounds because the former have |
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| 46. |
Ionization potential of li is 520 kj/mol. The energy required to convert 70 mg of li atoms in gaseous state into li+ ions is what? |
| Answer» Ionization potential of li is 520 kj/mol. The energy required to convert 70 mg of li atoms in gaseous state into li+ ions is what? | |
| 47. |
why hydrogen is included in reactivity series |
| Answer» why hydrogen is included in reactivity series | |
| 48. |
Write the types of decomposition reactions. |
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Answer» Write the types of decomposition reactions. |
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| 49. |
What is the basic principle involved in the displacement reaction? |
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Answer» What is the basic principle involved in the displacement reaction? |
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| 50. |
Write the comparison of the properties of Electrons, Protons and Neutrons |
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Answer» Write the comparison of the properties of Electrons, Protons and Neutrons |
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