15280 + Interview Questions in Chemistry Page 101 InterviewSolution

5001.	Which of the following is a saturated solution of ammonia in water?
Answer» Which of the following is a saturated solution of ammonia in water?

Discussion

5002.	2.Give the suitable reason for following statements: (i) The crystal of washing soda changed to white powder on exposure to air. (ii) The aqueous solution of sodium chloride is neutral but the solution of sodium carbonate is base.
Answer» 2.Give the suitable reason for following statements: (i) The crystal of washing soda changed to white powder on exposure to air. (ii) The aqueous solution of sodium chloride is neutral but the solution of sodium carbonate is base.

Discussion

5003.	how can we find out a bond is ionic or covalent? for eg in exams they are asking 2 subsantces whether they are having ionic bond or covalent bond? and THNX FOR THE ANSWER
Answer» how can we find out a bond is ionic or covalent? for eg in exams they are asking 2 subsantces whether they are having ionic bond or covalent bond? and THNX FOR THE ANSWER

Discussion

5004.	how to predict the stability of molecules?
Answer» how to predict the stability of molecules?

Discussion

5005.	why in ambidentate ligands only one of the two atoms are used for coordinate bond formation at a time ?
Answer» why in ambidentate ligands only one of the two atoms are used for coordinate bond formation at a time ?

Discussion

5006.	How many cyclic and alkene isomers of C4H8are possible? (Excluding stereoisomers)(1) 3(2) 4 (4) 6 (3) 5
Answer» How many cyclic and alkene isomers of C4H8are possible? (Excluding stereoisomers)(1) 3(2) 4 (4) 6 (3) 5

Discussion

5007.	Write the characteristics of the food chain.
Answer» Write the characteristics of the food chain.

Discussion

5008.	What is n-butane does it applicable to all bonds whether saturated or unsaturated
Answer» What is n-butane does it applicable to all bonds whether saturated or unsaturated

Discussion

5009.	The compound which has only primary and tertiary carbons is?
Answer» The compound which has only primary and tertiary carbons is?

Discussion

5010.	what is the formula for calculating covalency
Answer» what is the formula for calculating covalency

Discussion

5011.	The balanced net ionic equation for the reaction of aluminium sulphate and sodium hydroxide contains which of the following terms?a. 3Al^3+(aq)b. OH^- (aq)c. 3OH^- (aq)d. 2Al^3+ (aq)
Answer» The balanced net ionic equation for the reaction of aluminium sulphate and sodium hydroxide contains which of the following terms? a. 3Al^3+(aq) b. OH^- (aq) c. 3OH^- (aq) d. 2Al^3+ (aq)

Discussion

5012.	Define fossil fuels.
Answer» Define fossil fuels.

Discussion

5013.	While playing in a park, a child was stung by a wasp. Some elders suggested applying a paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?
Answer» While playing in a park, a child was stung by a wasp. Some elders suggested applying a paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?

Discussion

5014.	Give equations to prepare the following as directed:(a) MgCO3 from MgCl2(b) PbCO3 from Pb(NO3)2(c) NaHCO3 from Na2CO3
Answer» Give equations to prepare the following as directed: (a) MgCO₃ from MgCl₂ (b) PbCO₃ from Pb(NO₃)₂ (c) NaHCO₃ from Na₂CO₃

Discussion

5015.	Question 32Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?(a) Diamond(b) Graphite(c) Sulphur(d) Fullerene
Answer» Question 32 Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity? (a) Diamond (b) Graphite (c) Sulphur (d) Fullerene

Discussion

5016.	If Kf value of H2O is 1.86. The value of ∆Tf for 0.1m solution of non-volatile solute is
Answer» If K_f value of H₂O is 1.86. The value of ∆T_f for 0.1m solution of non-volatile solute is

5016.

If Kf value of H2O is 1.86. The value of ∆Tf for 0.1m solution of non-volatile solute is

Answer»

If K_f value of H₂O is 1.86. The value of ∆T_f for 0.1m solution of non-volatile solute is

Discussion

5017.	Question 2A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains:1. NaCl2. HCl 3. LiCl 4. KCl
Answer» Question 2 A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains: 1. NaCl 2. HCl 3. LiCl 4. KCl

Discussion

5018.	Select the correct Baeyer-Villiger oxidation reaction :
Answer» Select the correct Baeyer-Villiger oxidation reaction :

Discussion

5019.	What is a actual meaning of work with formula?
Answer» What is a actual meaning of work with formula?

Discussion

5020.	Question 9.Suggest two alternative arrangements for sewage disposal where there is no sewerage system.
Answer» Question 9. Suggest two alternative arrangements for sewage disposal where there is no sewerage system.

5020.

Question 9.Suggest two alternative arrangements for sewage disposal where there is no sewerage system.

Answer»

Question 9.

Suggest two alternative arrangements for sewage disposal where there is no sewerage system.

Discussion

5021.	Why there is colours were seen on the TV (television) screen when we put the magnet closer? And why those colours are green and red only?
Answer» Why there is colours were seen on the TV (television) screen when we put the magnet closer? And why those colours are green and red only?

Discussion

5022.	58. A concentrated aqueous solution of sulfuric acid has 98% H2SO4 and its density is 1.86 gmL-1. Find the volume of acid required to make 1L 0.1(M) H2SO4.
Answer» 58. A concentrated aqueous solution of sulfuric acid has 98% H2SO4 and its density is 1.86 gmL-1. Find the volume of acid required to make 1L 0.1(M) H2SO4.

Discussion

5023.	Why the colour of litmus paper changes??
Answer» Why the colour of litmus paper changes??

Discussion

5024.	Statements: All hammers are stones. No stone is ring. Some rings are doors. All doors are windows. Conclusions: I. Some windows are hammers. II. Some windows are rings. III. No window is hammer. IV. Some rings are hammers.
Answer» Statements: All hammers are stones. No stone is ring. Some rings are doors. All doors are windows. Conclusions: I. Some windows are hammers. II. Some windows are rings. III. No window is hammer. IV. Some rings are hammers.

5024.

Statements: All hammers are stones. No stone is ring. Some rings are doors. All doors are windows. Conclusions: I. Some windows are hammers. II. Some windows are rings. III. No window is hammer. IV. Some rings are hammers.

Answer»

Statements:

All hammers are stones.

No stone is ring.

Some rings are doors.

All doors are windows.

Conclusions:

I. Some windows are hammers.

II. Some windows are rings.

III. No window is hammer.

IV. Some rings are hammers.

Discussion

5025.	Pentan- 2- one and 3- methylbutan- 2- one are a pair of
Answer» Pentan- 2- one and 3- methylbutan- 2- one are a pair of

Discussion

5026.	The compound formed due to the transfer of electrons from a metal to a non-metal is known as:
Answer» The compound formed due to the transfer of electrons from a metal to a non-metal is known as:

Discussion

5027.	Can Bauxite be extracted from Aluminium
Answer» Can Bauxite be extracted from Aluminium

Discussion

5028.	About electrophilic
Answer» About electrophilic

Discussion

5029.	Which of the following compounds is a meso compound?
Answer» Which of the following compounds is a meso compound?

Discussion

5030.	A cubic container is filled with a liquid whose refractive index increases linearly from top to bottom. Which of the following graphs correctly represent the path of a ray of light inside the liquid?
Answer» A cubic container is filled with a liquid whose refractive index increases linearly from top to bottom. Which of the following graphs correctly represent the path of a ray of light inside the liquid?

Discussion

5031.	how can equimolar solution of non-electrolyte in the same solvent have same bp and fp when their value depends on their respective molal constants?
Answer» how can equimolar solution of non-electrolyte in the same solvent have same bp and fp when their value depends on their respective molal constants?

Discussion

5032.	Why we use CO2 in fire extinguisher?
Answer» Why we use ${CO}_{2}$ in fire extinguisher?

Discussion

5033.	Eggshells are composed of which reacts with to produce a gas that turns limewater milky.
Answer» Eggshells are composed of which reacts with to produce a gas that turns limewater milky.

Discussion

5034.	By drawing an electron dot diagram, show the lone pair effect leading to the formation of ammonium ion from ammonia gas and hydrogen ion.
Answer» By drawing an electron dot diagram, show the lone pair effect leading to the formation of ammonium ion from ammonia gas and hydrogen ion.

Discussion

5035.	What is the freezing pt of solution containing 8.1gHBr in 100g water assuming the acid to be 90% ionised?(Kf for HBr is1.86K/mol)
Answer» What is the freezing pt of solution containing 8.1gHBr in 100g water assuming the acid to be 90% ionised?(Kf for HBr is1.86K/mol)

Discussion

5036.	Question 140(ii)Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression 3−t.After how many half-lives will the fraction be 1243 of the original?
Answer» Question 140(ii) Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression $3^{- t}$ . After how many half-lives will the fraction be $\frac{1}{243}$ of the original?

5036.

Question 140(ii)Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression 3−t.After how many half-lives will the fraction be 1243 of the original?

Answer»

Question 140(ii)

Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression $3^{- t}$ .

After how many half-lives will the fraction be $\frac{1}{243}$ of the original?

Discussion

5037.	How to find the n Factor of mohar salt?
Answer» How to find the n Factor of mohar salt?

Discussion

5038.	What are hyperfine levels of ground state?
Answer» What are hyperfine levels of ground state?

Discussion

5039.	The reaction in which energy is absorbed is called _____________.
Answer» The reaction in which energy is absorbed is called _____________.

Discussion

5040.	50. 1.5g of metal nitrate yield 1.28g of metal sulphate.Calculate the equivalent weight of metal.
Answer» 50. 1.5g of metal nitrate yield 1.28g of metal sulphate.Calculate the equivalent weight of metal.

Discussion

5041.	What is the action of acetic acid with litmus paper?
Answer» What is the action of acetic acid with litmus paper?

Discussion

5042.	A compound of lead has following percentage composition, Pb = 90.66%, O = 9.34%. Calculate empirical formula of the compound. [Pb = 207, O = 16]
Answer» A compound of lead has following percentage composition, Pb = 90.66%, O = 9.34%. Calculate empirical formula of the compound. [Pb = 207, O = 16]

Discussion

5043.	Question 5 (a) Draw the electron dot structure for ethanoic acid.
Answer» Question 5 (a) Draw the electron dot structure for ethanoic acid.

Discussion

5044.	What is a chemical equation? Why are chemical equations balanced? Write a balanced chemical equation with state symbols for the following reaction:Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
Answer» What is a chemical equation? Why are chemical equations balanced? Write a balanced chemical equation with state symbols for the following reaction: Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

Discussion

5045.	WHy carbon is versatile in nature
Answer» WHy carbon is versatile in nature

Discussion

5046.	3. If a compound contains 94.11% of S by mass then the minimum molecular mass of compound will be approx equal to?
Answer» 3. If a compound contains 94.11% of S by mass then the minimum molecular mass of compound will be approx equal to?

Discussion

5047.	Pencil lead is made up of a non-metal called:
Answer» Pencil lead is made up of a non-metal called:

Discussion

5048.	1 bar pressure is equal to:
Answer» $1 bar$ pressure is equal to:

Discussion

5049.	___ is the gas formed when Ethanol is treated with hot concentrated sulphuric acid
Answer» ___ is the gas formed when Ethanol is treated with hot concentrated sulphuric acid

Discussion

5050.	38. What is aldehydic substance and it's formula
Answer» 38. What is aldehydic substance and it's formula

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following is a saturated solution of ammonia in water?

2.Give the suitable reason for following statements: (i) The crystal of washing soda changed to white powder on exposure to air. (ii) The aqueous solution of sodium chloride is neutral but the solution of sodium carbonate is base.

how can we find out a bond is ionic or covalent? for eg in exams they are asking 2 subsantces whether they are having ionic bond or covalent bond? and THNX FOR THE ANSWER

how to predict the stability of molecules?

why in ambidentate ligands only one of the two atoms are used for coordinate bond formation at a time ?

How many cyclic and alkene isomers of C4H8are possible? (Excluding stereoisomers)(1) 3(2) 4 (4) 6 (3) 5

Write the characteristics of the food chain.

What is n-butane does it applicable to all bonds whether saturated or unsaturated

The compound which has only primary and tertiary carbons is?

what is the formula for calculating covalency

The balanced net ionic equation for the reaction of aluminium sulphate and sodium hydroxide contains which of the following terms?a. 3Al^3+(aq)b. OH^- (aq)c. 3OH^- (aq)d. 2Al^3+ (aq)

Define fossil fuels.

While playing in a park, a child was stung by a wasp. Some elders suggested applying a paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?

Give equations to prepare the following as directed:(a) MgCO3 from MgCl2(b) PbCO3 from Pb(NO3)2(c) NaHCO3 from Na2CO3

Question 32Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?(a) Diamond(b) Graphite(c) Sulphur(d) Fullerene

If Kf value of H2O is 1.86. The value of ∆Tf for 0.1m solution of non-volatile solute is

Question 2A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains:1. NaCl2. HCl 3. LiCl 4. KCl

Select the correct Baeyer-Villiger oxidation reaction :

What is a actual meaning of work with formula?

Question 9.Suggest two alternative arrangements for sewage disposal where there is no sewerage system.

Why there is colours were seen on the TV (television) screen when we put the magnet closer? And why those colours are green and red only?

58. A concentrated aqueous solution of sulfuric acid has 98% H2SO4 and its density is 1.86 gmL-1. Find the volume of acid required to make 1L 0.1(M) H2SO4.

Why the colour of litmus paper changes??

Statements: All hammers are stones. No stone is ring. Some rings are doors. All doors are windows. Conclusions: I. Some windows are hammers. II. Some windows are rings. III. No window is hammer. IV. Some rings are hammers.

Pentan- 2- one and 3- methylbutan- 2- one are a pair of

The compound formed due to the transfer of electrons from a metal to a non-metal is known as:

Can Bauxite be extracted from Aluminium

About electrophilic

Which of the following compounds is a meso compound?

A cubic container is filled with a liquid whose refractive index increases linearly from top to bottom. Which of the following graphs correctly represent the path of a ray of light inside the liquid?

how can equimolar solution of non-electrolyte in the same solvent have same bp and fp when their value depends on their respective molal constants?

Why we use CO2 in fire extinguisher?

Eggshells are composed of which reacts with to produce a gas that turns limewater milky.

By drawing an electron dot diagram, show the lone pair effect leading to the formation of ammonium ion from ammonia gas and hydrogen ion.

What is the freezing pt of solution containing 8.1gHBr in 100g water assuming the acid to be 90% ionised?(Kf for HBr is1.86K/mol)

Question 140(ii)Consider a quantity of a radioactive substance. The fraction of this quantity that remains after t half-lives can be found by using the expression 3−t.After how many half-lives will the fraction be 1243 of the original?

How to find the n Factor of mohar salt?

What are hyperfine levels of ground state?

The reaction in which energy is absorbed is called _____________.

50. 1.5g of metal nitrate yield 1.28g of metal sulphate.Calculate the equivalent weight of metal.

What is the action of acetic acid with litmus paper?

A compound of lead has following percentage composition, Pb = 90.66%, O = 9.34%. Calculate empirical formula of the compound. [Pb = 207, O = 16]

Question 5 (a) Draw the electron dot structure for ethanoic acid.

What is a chemical equation? Why are chemical equations balanced? Write a balanced chemical equation with state symbols for the following reaction:Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

WHy carbon is versatile in nature

3. If a compound contains 94.11% of S by mass then the minimum molecular mass of compound will be approx equal to?

Pencil lead is made up of a non-metal called:

1 bar pressure is equal to:

___ is the gas formed when Ethanol is treated with hot concentrated sulphuric acid

38. What is aldehydic substance and it's formula