15280 + Interview Questions in Chemistry Page 8 InterviewSolution

351.	What is diference between base,basic oxide and basic hydroxide?
Answer» What is diference between base,basic oxide and basic hydroxide?

Discussion

352.	(a) Define isomerism.(b) Give the IUPAC name of the isomer C4H10 which has a branched chain.
Answer» (a) Define isomerism. (b) Give the IUPAC name of the isomer C₄H₁₀ which has a branched chain.

Discussion

353.	For electroplating of an object with silver, which of the following electrolytes is/are used?
Answer» For electroplating of an object with silver, which of the following electrolytes is/are used?

Discussion

354.	Which element is commonly used in catalytic converters due to its property of a reducing agent?
Answer» Which element is commonly used in catalytic converters due to its property of a reducing agent?

Discussion

355.	Nylon - 4 is synthesized from which of the following lactams?
Answer» Nylon - 4 is synthesized from which of the following lactams?

Discussion

356.	In which of the following molecules/ions all bonds are not equal? a.sf4 b.sif4 c.xef4 d.bf4-
Answer» In which of the following molecules/ions all bonds are not equal? a.sf4 b.sif4 c.xef4 d.bf4-

Discussion

357.	How to calculate the wavelength of a sound wave ??
Answer» How to calculate the wavelength of a sound wave ??

Discussion

358.	How many spectral line are seen for hydrogen atom when electron jump from n2 = 5 to n1 = 1 in visible region ? (1) 2 (2) 3 (3) 4 (4) 5
Answer» How many spectral line are seen for hydrogen atom when electron jump from n2 = 5 to n1 = 1 in visible region ? (1) 2 (2) 3 (3) 4 (4) 5

Discussion

359.	6 Iupac name of [Co(NH3)4Cl2][Cr(CN)6]
Answer» 6 Iupac name of [Co(NH3)4Cl2][Cr(CN)6]

Discussion

360.	find out pH of solution having 2 × 10^{-3} moles of OH^- ions in 2 litre solutio
Answer» find out pH of solution having 2 × 10^{-3} moles of OH^- ions in 2 litre solutio

Discussion

361.	State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.
Answer» State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.

Discussion

362.	the activation energy of a reaction whose reaction rate get doubled when temperature raised from 10C^° to60C^° is
Answer» the activation energy of a reaction whose reaction rate get doubled when temperature raised from 10C^° to60C^° is

Discussion

363.	Give balanced equation: (a) Dilute sulphuric acid reacts with Aluminium powder (b) Potassium carbonate reacts with hydrochloric acid (c) Potassium hydroxide reacts with nitric acid (d) Zinc reacts with sodium hydroxide solution
Answer» Give balanced equation: (a) Dilute sulphuric acid reacts with Aluminium powder (b) Potassium carbonate reacts with hydrochloric acid (c) Potassium hydroxide reacts with nitric acid (d) Zinc reacts with sodium hydroxide solution

Discussion

364.	Calculate the pH of N÷1000 sodium hydroxide (NaOH) solution assuming complete ionisation
Answer» Calculate the pH of N÷1000 sodium hydroxide (NaOH) solution assuming complete ionisation

Discussion

365.	Allotropes of fullerene contains how many carbon atom?60
Answer» Allotropes of fullerene contains how many carbon atom? 60

Discussion

366.	Give the IUPAC name of following compounds.(1) CH3CH2CH2OH(2) HCOOH
Answer» Give the IUPAC name of following compounds. (1) CH₃CH₂CH₂OH (2) HCOOH

366.

Give the IUPAC name of following compounds.(1) CH3CH2CH2OH(2) HCOOH

Answer»

Give the IUPAC name of following compounds.

(1) CH₃CH₂CH₂OH

(2) HCOOH

Discussion

367.	38 If P is member of ketone family then (1)R is ethane gas (2)Q is used as anasthetic (3)P has IUPAC name butanone (4)formation of R involves carbanion intermediate
Answer» 38 If P is member of ketone family then (1)R is ethane gas (2)Q is used as anasthetic (3)P has IUPAC name butanone (4)formation of R involves carbanion intermediate

Discussion

368.	Two substances A and B react to give a salt. It is also given that substance A has sour taste. Which of the following is true?
Answer» Two substances A and B react to give a salt. It is also given that substance A has sour taste. Which of the following is true?

Discussion

369.	The pH of 0.0 1M NaOH(aq) solution will be:
Answer» The pH of $0.0 1 M N a O H (a q)$ solution will be:

Discussion

370.	If one electron has been removed from an atom, it becomes increasingly difficult to remove the second and subsequent electrons from the resulting positively charged ions on account of electrostatic attraction. The numerical value of energy involved in the given process K→K− is less than that of which of the following processes?
Answer» If one electron has been removed from an atom, it becomes increasingly difficult to remove the second and subsequent electrons from the resulting positively charged ions on account of electrostatic attraction. The numerical value of energy involved in the given process $K \to K^{-}$ is less than that of which of the following processes?

Discussion

371.

Look at the two pictures. Find four things that are different about these trees and talk about them.Disclaimer: Kindly refer the textbook for the images. Picture 1 I give you all this Picture 2 What do you give me?

Answer» Look at the two pictures. Find four things that are different about these trees and talk about them.

Disclaimer: Kindly refer the textbook for the images.


Picture 1 I give you all this	Picture 2 What do you give me?

Discussion

372.	Define RAM based on hydrogen as well as carbon-12 scale.
Answer» Define RAM based on hydrogen as well as carbon-12 scale.

Discussion

373.	Why carbon compounds do not have strong forces of attraction between their molecules.?Explain in detail
Answer» Why carbon compounds do not have strong forces of attraction between their molecules.? Explain in detail

Discussion

374.	What are the differences and similarities between concentration and solubility? [3 MARKS]
Answer» What are the differences and similarities between concentration and solubility? [3 MARKS]

Discussion

375.	A student measured the pH values of four solutions P, Q, R and S as 10, 6, 0 and 12 respectively. The solution which is the most acidic is likely to be the solution :(1) P (2) Q(3) R(4) S
Answer» A student measured the pH values of four solutions P, Q, R and S as 10, 6, 0 and 12 respectively. The solution which is the most acidic is likely to be the solution : (1) P (2) Q (3) R (4) S

Discussion

376.	49. How the alpha is calculated here. Give the steps and also the formula involved.
Answer» 49. How the alpha is calculated here. Give the steps and also the formula involved.

Discussion

377.	69 A compound MX2 has observed and normal molecular masses 65.6 and 164 respectively. calculate percentage of ionization of MX2
Answer» 69 A compound MX2 has observed and normal molecular masses 65.6 and 164 respectively. calculate percentage of ionization of MX2

Discussion

378.	Give an experiment to differentiate b/w saturated and unsaturated compounds?
Answer» Give an experiment to differentiate b/w saturated and unsaturated compounds?

Discussion

379.	Calculate the mass of 2.5g atom of oxygen.
Answer» Calculate the mass of 2.5g atom of oxygen.

Discussion

380.	Give at least two functions of HCl in stomach.
Answer» Give at least two functions of HCl in stomach.

Discussion

381.	What do you understand by lone pair and shared pair?
Answer» What do you understand by lone pair and shared pair?

Discussion

382.	What is the relation between Kh ( Henry's law constant) and molecular weight?
Answer» What is the relation between Kh ( Henry's law constant) and molecular weight?

Discussion

383.	Chemical formula of blue vitrol and caustic potash are respectively:
Answer» Chemical formula of blue vitrol and caustic potash are respectively:

Discussion

384.	Criss cross method of hydrogen peroxide
Answer» Criss cross method of hydrogen peroxide

Discussion

385.	What is meant by the term chemical bond and chemical bonding?
Answer» What is meant by the term chemical bond and chemical bonding?

Discussion

386.	Which of the following term is used to define earthly impurities associated with the ore?
Answer» Which of the following term is used to define earthly impurities associated with the ore?

Discussion

387.	By the addition of only one solution how would you distinguish between dilute hydrochloric acid and dilute nitric acid?
Answer» By the addition of only one solution how would you distinguish between dilute hydrochloric acid and dilute nitric acid?

Discussion

388.	(i) Which compound should be heated with soda lime to obtain ethane gas in the laboratory?(ii) Write the equation for the reaction involved in the above question.(iii) Write a balanced equation for the complete combustion of ethane.(iv) Name a solid which can be used, instead of conc. H2SO4 to prepare ethylene by dehydration of ethanol.(v) Name a reagent which can be used to distinguish between ethane and ethene.(vi) Ethylene forms and addition product with chlorine. Name this addition product and write its structural formula.
Answer» (i) Which compound should be heated with soda lime to obtain ethane gas in the laboratory? (ii) Write the equation for the reaction involved in the above question. (iii) Write a balanced equation for the complete combustion of ethane. (iv) Name a solid which can be used, instead of conc. H₂SO₄ to prepare ethylene by dehydration of ethanol. (v) Name a reagent which can be used to distinguish between ethane and ethene. (vi) Ethylene forms and addition product with chlorine. Name this addition product and write its structural formula.

Discussion

389.	In the presence of platinum at 8000C , ammonia reacts with oxygen to give X and water vapour. X then oxidizes to give reddish brown vapours of Y. What is X and Y?
Answer» In the presence of platinum at $800^{0} C$ , ammonia reacts with oxygen to give X and water vapour. X then oxidizes to give reddish brown vapours of Y. What is X and Y?

Discussion

390.	Two moles of ammonia is introducedi in an evacuated 500 ml vessel at high temperature. The decomposition reaction is : 2NH3 ->N2 +3H2 at the equillibrium NH3 becomes 1 mole then the 'K' would be:-
Answer» Two moles of ammonia is introducedi in an evacuated 500 ml vessel at high temperature. The decomposition reaction is : 2NH3 ->N2 +3H2 at the equillibrium NH3 becomes 1 mole then the 'K' would be:-

Discussion

391.	Question 2(a) What are the uses of products obtained from the chloralkali process?(b) What happens if we pass an electric current through a saturated solution of sodium chloride?
Answer» Question 2 (a) What are the uses of products obtained from the chloralkali process? (b) What happens if we pass an electric current through a saturated solution of sodium chloride?

391.

Question 2(a) What are the uses of products obtained from the chloralkali process?(b) What happens if we pass an electric current through a saturated solution of sodium chloride?

Answer»

Question 2

(a) What are the uses of products obtained from the chloralkali process?

(b) What happens if we pass an electric current through a saturated solution of sodium chloride?

Discussion

392.	If solubility product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then which of the following relation between S and Ksp is correct?
Answer» If solubility product of $Z r_{3} (P O_{4})_{4}$ is denoted by $K_{s p}$ and its molar solubility is denoted by $S$ , then which of the following relation between $S$ and $K_{s p}$ is correct?

Discussion

393.	Complete the following reaction: 2Cu(s) + O2 (g)→
Answer» Complete the following reaction: $2 Cu (s) + O_{2} (g) \to$

Discussion

394.	11 What is the product obtained when 4-nitro aniline is treated with bromine water?
Answer» 11 What is the product obtained when 4-nitro aniline is treated with bromine water?

Discussion

395.	The functional group present in ethanol is
Answer» The functional group present in ethanol is

Discussion

396.	pH indicators are:
Answer» pH indicators are:

Discussion

397.	Electronic configuration of Fe3+ ion is given corrrectly by
Answer» Electronic configuration of $F e^{3 +}$ ion is given corrrectly by

Discussion

398.	17. In a container, 1L of aqueous CH3COOH is present and pH of this solution is 3. Now 2g charcoal is added in this container and pH of CH3COOH solution become 4. the mass of CH3COOH adsorbed per gram of charcoal is
Answer» 17. In a container, 1L of aqueous CH3COOH is present and pH of this solution is 3. Now 2g charcoal is added in this container and pH of CH3COOH solution become 4. the mass of CH3COOH adsorbed per gram of charcoal is

Discussion

399.	Question 20.1 Write the balanced chemical equation for the following reaction and identify the type of reaction. Thermit reaction: Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.
Answer» Question 20.1 Write the balanced chemical equation for the following reaction and identify the type of reaction. Thermit reaction: Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.

399.

Question 20.1 Write the balanced chemical equation for the following reaction and identify the type of reaction. Thermit reaction: Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.

Answer»

Question 20.1

Write the balanced chemical equation for the following reaction and identify the type of reaction.

Thermit reaction: Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.

Discussion

400.	(a) For the reduction of a metal oxide, suggest a reducing agent other than carbon. (b) Explain why an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
Answer» (a) For the reduction of a metal oxide, suggest a reducing agent other than carbon. (b) Explain why an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.

Discussion

Explore topic-wise InterviewSolutions in .

What is diference between base,basic oxide and basic hydroxide?

(a) Define isomerism.(b) Give the IUPAC name of the isomer C4H10 which has a branched chain.

For electroplating of an object with silver, which of the following electrolytes is/are used?

Which element is commonly used in catalytic converters due to its property of a reducing agent?

Nylon - 4 is synthesized from which of the following lactams?

In which of the following molecules/ions all bonds are not equal? a.sf4 b.sif4 c.xef4 d.bf4-

How to calculate the wavelength of a sound wave ??

How many spectral line are seen for hydrogen atom when electron jump from n2 = 5 to n1 = 1 in visible region ? (1) 2 (2) 3 (3) 4 (4) 5

6 Iupac name of [Co(NH3)4Cl2][Cr(CN)6]

find out pH of solution having 2 × 10^{-3} moles of OH^- ions in 2 litre solutio

State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory.

the activation energy of a reaction whose reaction rate get doubled when temperature raised from 10C^° to60C^° is

Give balanced equation: (a) Dilute sulphuric acid reacts with Aluminium powder (b) Potassium carbonate reacts with hydrochloric acid (c) Potassium hydroxide reacts with nitric acid (d) Zinc reacts with sodium hydroxide solution

Calculate the pH of N÷1000 sodium hydroxide (NaOH) solution assuming complete ionisation

Allotropes of fullerene contains how many carbon atom?60

Give the IUPAC name of following compounds.(1) CH3CH2CH2OH(2) HCOOH

38 If P is member of ketone family then (1)R is ethane gas (2)Q is used as anasthetic (3)P has IUPAC name butanone (4)formation of R involves carbanion intermediate

Two substances A and B react to give a salt. It is also given that substance A has sour taste. Which of the following is true?

The pH of 0.0 1M NaOH(aq) solution will be:

Look at the two pictures. Find four things that are different about these trees and talk about them.Disclaimer: Kindly refer the textbook for the images. Picture 1 I give you all this Picture 2 What do you give me?

Define RAM based on hydrogen as well as carbon-12 scale.

Why carbon compounds do not have strong forces of attraction between their molecules.?Explain in detail

What are the differences and similarities between concentration and solubility? [3 MARKS]

A student measured the pH values of four solutions P, Q, R and S as 10, 6, 0 and 12 respectively. The solution which is the most acidic is likely to be the solution :(1) P (2) Q(3) R(4) S

49. How the alpha is calculated here. Give the steps and also the formula involved.

69 A compound MX2 has observed and normal molecular masses 65.6 and 164 respectively. calculate percentage of ionization of MX2

Give an experiment to differentiate b/w saturated and unsaturated compounds?

Calculate the mass of 2.5g atom of oxygen.

Give at least two functions of HCl in stomach.

What do you understand by lone pair and shared pair?

What is the relation between Kh ( Henry's law constant) and molecular weight?

Chemical formula of blue vitrol and caustic potash are respectively:

Criss cross method of hydrogen peroxide

What is meant by the term chemical bond and chemical bonding?

Which of the following term is used to define earthly impurities associated with the ore?

By the addition of only one solution how would you distinguish between dilute hydrochloric acid and dilute nitric acid?

In the presence of platinum at 8000C , ammonia reacts with oxygen to give X and water vapour. X then oxidizes to give reddish brown vapours of Y. What is X and Y?

Two moles of ammonia is introducedi in an evacuated 500 ml vessel at high temperature. The decomposition reaction is : 2NH3 ->N2 +3H2 at the equillibrium NH3 becomes 1 mole then the 'K' would be:-

Question 2(a) What are the uses of products obtained from the chloralkali process?(b) What happens if we pass an electric current through a saturated solution of sodium chloride?

If solubility product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S, then which of the following relation between S and Ksp is correct?

Complete the following reaction: 2Cu(s) + O2 (g)→

11 What is the product obtained when 4-nitro aniline is treated with bromine water?

The functional group present in ethanol is

pH indicators are:

Electronic configuration of Fe3+ ion is given corrrectly by

17. In a container, 1L of aqueous CH3COOH is present and pH of this solution is 3. Now 2g charcoal is added in this container and pH of CH3COOH solution become 4. the mass of CH3COOH adsorbed per gram of charcoal is

Question 20.1 Write the balanced chemical equation for the following reaction and identify the type of reaction. Thermit reaction: Iron (III) oxide reacts with aluminium and gives molten iron and aluminium oxide.

(a) For the reduction of a metal oxide, suggest a reducing agent other than carbon. (b) Explain why an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.