46295 + Interview Questions in Chemistry

1.	The pH of an aqueous solution of HCl is 3. Its osmotic pressure at a temperature T would be equal to
Answer» The pH of an aqueous solution of HCl is 3. Its osmotic pressure at a temperature T would be equal to

Discussion

2.	What is the scientefic explanation for the feeling of depression ?
Answer» What is the scientefic explanation for the feeling of depression ?

Discussion

3.	What is atomic mass, molecular mass ,molar mass, gram atomic mass,
Answer» What is atomic mass, molecular mass ,molar mass, gram atomic mass,

Discussion

4.	How we find out the charge carriers of a compound ? Pls explain me with examples for both complex and simple compound
Answer» How we find out the charge carriers of a compound ? Pls explain me with examples for both complex and simple compound

Discussion

5.	how many sterioisomers does the molecule have? CH_3CH=CHCH_2CHBrCH_{
Answer» how many sterioisomers does the molecule have? CH_3CH=CHCH_2CHBrCH_{

Discussion

6.	Why ZnCl2 is used with HCl to yield R-cl from R-oh but not Znbr2 with hbr to yield R-br from R-oh?
Answer» Why ZnCl2 is used with HCl to yield R-cl from R-oh but not Znbr2 with hbr to yield R-br from R-oh?

Discussion

7.	The reaction of one equivalent of HBr with CH3=CH−C≡CH gives:
Answer» The reaction of one equivalent of HBr with $C H_{3} = C H - C \equiv C H$ gives:

Discussion

8.	number of moles of NaOH in 27 cm3 of 0.15M NaOH solution is? In this how to convert cm3 to ml?
Answer» number of moles of NaOH in 27 cm3 of 0.15M NaOH solution is? In this how to convert cm3 to ml?

Discussion

9.	The boiling point of a solution of Benzoic acid in Benzene is less than expected because
Answer» The boiling point of a solution of Benzoic acid in Benzene is less than expected because

Discussion

10.	How many minimum number of carbons are needed for an optically active ether?
Answer» How many minimum number of carbons are needed for an optically active ether?

Discussion

11.	Which of the following are ores of copper?
Answer» Which of the following are ores of copper?

Discussion

12.	Which of the followings is trace element?
Answer» Which of the followings is trace element?

Discussion

13.	what is the order of dipole momets in each case aryl halides and alkyl halide and their indiidual members and also explain the reasons
Answer» what is the order of dipole momets in each case aryl halides and alkyl halide and their indiidual members and also explain the reasons

Discussion

14.	What is a redox reaction? When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
Answer» What is a redox reaction? When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?

Discussion

15.	12. A solution of 10 ml M/10 ferrous sulphate was titrated with potassium permanganate solution in acidic medium the amount of potassium permanganate used will be
Answer» 12. A solution of 10 ml M/10 ferrous sulphate was titrated with potassium permanganate solution in acidic medium the amount of potassium permanganate used will be

Discussion

16.	The correct conformation of the following compound is:
Answer» The correct conformation of the following compound is:

Discussion

17.	What is orbital size
Answer» What is orbital size

Discussion

18.	SupposeIndia had a target of producing by 2020 AD, 200,000 MW of electricpower, ten percent of which was to be obtained from nuclear powerplants. Suppose we are given that, on an average, the efficiency ofutilization (i.e. conversion to electric energy) of thermal energyproduced in a reactor was 25%. How much amount of fissionable uraniumwould our country need per year by 2020? Take the heat energy perfission of 235Uto be about 200MeV.
Answer» Suppose India had a target of producing by 2020 AD, 200,000 MW of electric power, ten percent of which was to be obtained from nuclear power plants. Suppose we are given that, on an average, the efficiency of utilization (i.e. conversion to electric energy) of thermal energy produced in a reactor was 25%. How much amount of fissionable uranium would our country need per year by 2020? Take the heat energy per fission of ²³⁵U to be about 200MeV.

Discussion

19.	A certain current liberates 0.504 g of hydrogen in 2 hours. How many gram of copper can be liberated by the same current flowing for the same time in aqueous CuSO4 solution?
Answer» A certain current liberates 0.504 g of hydrogen in 2 hours. How many gram of copper can be liberated by the same current flowing for the same time in aqueous CuSO4 solution?

Discussion

20.	For oxidizing alcohols, several oxidants – each with a multivalent central atom as the active species – can be used. When NaOCl, with Cl as the multivalent atom is used, how many bonds to oxygen atoms does each central multivalent atom have just before and immediately after the oxidation respectively?
Answer» For oxidizing alcohols, several oxidants – each with a multivalent central atom as the active species – can be used. When $N a O C l$ , with Cl as the multivalent atom is used, how many bonds to oxygen atoms does each central multivalent atom have just before and immediately after the oxidation respectively?

Discussion

21.	What is meant by precision?
Answer» What is meant by precision?

Discussion

22.	Depression in freezing point of 0.01 molal aqueous COOH solution is 0.02046. 1molal aqueous urea solution freeze at minus 1.86 degree Celsius ,assuming molality equal to the molarity, pH of HCOOH solution is
Answer» Depression in freezing point of 0.01 molal aqueous COOH solution is 0.02046. 1molal aqueous urea solution freeze at minus 1.86 degree Celsius ,assuming molality equal to the molarity, pH of HCOOH solution is

Discussion

23.	The correct order of electron affinity is:
Answer» The correct order of electron affinity is:

Discussion

24.	76 Two weak acid solutions HA1 and HA2 each with the same concentration and having pka values 3 and 5 are placed in contact with a hydrogen electrode (1atm, 25 degrees celsius) and are interconnected through a salt bridge. Calculate the emf of the cell.
Answer» 76 Two weak acid solutions HA1 and HA2 each with the same concentration and having pka values 3 and 5 are placed in contact with a hydrogen electrode (1atm, 25 degrees celsius) and are interconnected through a salt bridge. Calculate the emf of the cell.

Discussion

25.	Which of the following polymers are condensation polymers? (a) Bakelite (b) Teflon (c) Buty rubber (d) Melamine formaldehyde resin
Answer» Which of the following polymers are condensation polymers? (a) Bakelite (b) Teflon (c) Buty rubber (d) Melamine formaldehyde resin

25.

Which of the following polymers are condensation polymers? (a) Bakelite (b) Teflon (c) Buty rubber (d) Melamine formaldehyde resin

Answer»

Which of the following polymers are condensation polymers?

(a) Bakelite

(b) Teflon

(c) Buty rubber

(d) Melamine formaldehyde resin

Discussion

26.	12. The activation energy of a reaction occurring at 25 C is 50 kj/mol . The approximate value of the temperature coefficient for the reaction is- a) 2 b) 4 c) 6 d) 8
Answer» 12. The activation energy of a reaction occurring at 25 C is 50 kj/mol . The approximate value of the temperature coefficient for the reaction is- a) 2 b) 4 c) 6 d) 8

Discussion

27.	Strongest nucleophile is
Answer» Strongest nucleophile is

Discussion

28.	Which of the following is a paramagnetic substance?
Answer» Which of the following is a paramagnetic substance?

Discussion

29.	Why ionic bond has high melting point than covalent bond??
Answer» Why ionic bond has high melting point than covalent bond??

Discussion

30.	A=1.0m(+-)0.2mB=2.0m(+-)0.2mFind the correct value of (AB)^1/2
Answer» A=1.0m(+-)0.2m B=2.0m(+-)0.2m Find the correct value of (AB)^1/2

Discussion

31.	C60 contains
Answer» $C_{60}$ contains

Discussion

32.	Which one of the following reactions is NOT a decomposition reaction?
Answer» Which one of the following reactions is NOT a decomposition reaction?

Discussion

33.	Whatis meant by ‘disproportionation’? Give two examples ofdisproportionation reaction in aqueoussolution.
Answer» What is meant by ‘disproportionation’? Give two examples of disproportionation reaction in aqueous solution.

Discussion

34.	21. Can a solution of 1M cuso4 stored in a Nickel metal vessel E^° Ni2+/Ni=-0.25V & E^° cu2+/Cu=+0.34V
Answer» 21. Can a solution of 1M cuso4 stored in a Nickel metal vessel E^° Ni2+/Ni=-0.25V & E^° cu2+/Cu=+0.34V

Discussion

35.	Among NF3 and PF3 which has greater bond angle.Explain in detail??
Answer» Among NF3 and PF3 which has greater bond angle.Explain in detail??

Discussion

36.	each molecule of a gas has f degree of freedom.the ratio Cp/Cv=gamma for the gas is
Answer» each molecule of a gas has f degree of freedom.the ratio Cp/Cv=gamma for the gas is

Discussion

37.	In Primary free radical ( METHYL ATTACHED TO A CARBON BONDED WITH TWO HYDROGEN HAVING AN UNPAIRED ELECTRON) why the methyl group will push the electron towards the electron deficient C atom.
Answer» In Primary free radical ( METHYL ATTACHED TO A CARBON BONDED WITH TWO HYDROGEN HAVING AN UNPAIRED ELECTRON) why the methyl group will push the electron towards the electron deficient C atom.

Discussion

38.	For the given reaction , (A) and (B) are major products. then major product (C) is :
Answer» For the given reaction , (A) and (B) are major products. then major product (C) is :

Discussion

39.	(a) Calculate ΔrG0 for the reaction Mg(s)+Cu2+(aq)→Mg2+(aq)+Cu(s) Given : E0cell=+2.71V,1 F=96500Cmol−1 (b) Name the type of cell which was used in Apollo space programme for providing electrical power.
Answer» (a) Calculate $Δ_{r} G^{0}$ for the reaction $M g (s) + C u^{2 +} (a q) \to M g^{2 +} (a q) + C u (s)$ Given : $E_{c e l l}^{0} = + 2.71 V, 1 F = 96500 C m o l^{- 1}$ (b) Name the type of cell which was used in Apollo space programme for providing electrical power.

Discussion

40.	A metal 'X' forms a body centred cubic lattice whose unit cell edge length is 300 pm. Calculate the density of 'X'.Given: Molar mass of metal 'X' =78 g mol−1
Answer» A metal 'X' forms a body centred cubic lattice whose unit cell edge length is $300 pm$ . Calculate the density of 'X'. Given: $Molar mass of metal 'X' = 78 {g mol}^{- 1}$

Discussion

41.	In which case the energy released in minimum and why? A)Cl -> Cl- B) P -> P- C) N-> N- D) C -> C-
Answer» In which case the energy released in minimum and why? A)Cl -> Cl^- B) P -> P^- C) N-> N^- D) C -> C^-

41.

In which case the energy released in minimum and why? A)Cl -> Cl- B) P -> P- C) N-> N- D) C -> C-

Answer»

In which case the energy released in minimum and why?

A)Cl -> Cl^-

B) P -> P^-

C) N-> N^-

D) C -> C^-

Discussion

42.	ratio of molar heat capacity at cons†an t volume to its specific heat capacity at cons†an t voulme for hydrogen is equal t
Answer» ratio of molar heat capacity at cons†an t volume to its specific heat capacity at cons†an t voulme for hydrogen is equal t

Discussion

43.	How to find limiting reagent?Iam having trouble to find the limitin reagent
Answer» How to find limiting reagent?Iam having trouble to find the limitin reagent

Discussion

44.	For a 'p' electron, the orbital angular momentum is
Answer» For a 'p' electron, the orbital angular momentum is

Discussion

45.	The standard emf of the cell Fe\|Fe2+(aq)\|\|Cd2+(aq)\|Cd is 0.0372 V and temperature coefficient of the cell is −1.25×10−4VK−1. Which is/are correct about the cell (at 300 K)?
Answer» The standard emf of the cell $F e \| F e^{2 +} (a q) \| \| C d^{2 +} (a q) \| C d$ is 0.0372 V and temperature coefficient of the cell is $- 1.25 \times 10^{- 4} V K^{- 1}$ . Which is/are correct about the cell (at 300 K)?

Discussion

46.	the maximum percentage of available volumn that can be filled in a face centered cubic system by an atom?
Answer» the maximum percentage of available volumn that can be filled in a face centered cubic system by an atom?

Discussion

47.	What is subshell
Answer» What is subshell

Discussion

48.	The population P=P(t) at time ‘t′ of a certain species follows the differential equation dPdt=0.5P−450. If P(0)=850, then the time at which population becomes zero is :
Answer» The population $P = P (t)$ at time $‘ t^{'}$ of a certain species follows the differential equation $\frac{d P}{d t} = 0.5 P - 450.$ If $P (0) = 850,$ then the time at which population becomes zero is :

Discussion

49.	Which of the following compounds will have meso isomer also
Answer» Which of the following compounds will have meso isomer also

Discussion

50.	The number of equivalents of Na2S2O3 required for the volumetric estimation of one equivalent of Cu^2+
Answer» The number of equivalents of Na2S2O3 required for the volumetric estimation of one equivalent of Cu^2+

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The pH of an aqueous solution of HCl is 3. Its osmotic pressure at a temperature T would be equal to

What is the scientefic explanation for the feeling of depression ?

What is atomic mass, molecular mass ,molar mass, gram atomic mass,

How we find out the charge carriers of a compound ? Pls explain me with examples for both complex and simple compound

how many sterioisomers does the molecule have? CH_3CH=CHCH_2CHBrCH_{

Why ZnCl2 is used with HCl to yield R-cl from R-oh but not Znbr2 with hbr to yield R-br from R-oh?

The reaction of one equivalent of HBr with CH3=CH−C≡CH gives:

number of moles of NaOH in 27 cm3 of 0.15M NaOH solution is? In this how to convert cm3 to ml?

The boiling point of a solution of Benzoic acid in Benzene is less than expected because

How many minimum number of carbons are needed for an optically active ether?

Which of the following are ores of copper?

Which of the followings is trace element?

what is the order of dipole momets in each case aryl halides and alkyl halide and their indiidual members and also explain the reasons

What is a redox reaction? When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?

12. A solution of 10 ml M/10 ferrous sulphate was titrated with potassium permanganate solution in acidic medium the amount of potassium permanganate used will be

The correct conformation of the following compound is:

What is orbital size

A certain current liberates 0.504 g of hydrogen in 2 hours. How many gram of copper can be liberated by the same current flowing for the same time in aqueous CuSO4 solution?

What is meant by precision?

Depression in freezing point of 0.01 molal aqueous COOH solution is 0.02046. 1molal aqueous urea solution freeze at minus 1.86 degree Celsius ,assuming molality equal to the molarity, pH of HCOOH solution is

The correct order of electron affinity is:

76 Two weak acid solutions HA1 and HA2 each with the same concentration and having pka values 3 and 5 are placed in contact with a hydrogen electrode (1atm, 25 degrees celsius) and are interconnected through a salt bridge. Calculate the emf of the cell.

Which of the following polymers are condensation polymers? (a) Bakelite (b) Teflon (c) Buty rubber (d) Melamine formaldehyde resin

12. The activation energy of a reaction occurring at 25 C is 50 kj/mol . The approximate value of the temperature coefficient for the reaction is- a) 2 b) 4 c) 6 d) 8

Strongest nucleophile is

Which of the following is a paramagnetic substance?

Why ionic bond has high melting point than covalent bond??

A=1.0m(+-)0.2mB=2.0m(+-)0.2mFind the correct value of (AB)^1/2

C60 contains

Which one of the following reactions is NOT a decomposition reaction?

Whatis meant by ‘disproportionation’? Give two examples ofdisproportionation reaction in aqueoussolution.

21. Can a solution of 1M cuso4 stored in a Nickel metal vessel E^° Ni2+/Ni=-0.25V & E^° cu2+/Cu=+0.34V

Among NF3 and PF3 which has greater bond angle.Explain in detail??

each molecule of a gas has f degree of freedom.the ratio Cp/Cv=gamma for the gas is

In Primary free radical ( METHYL ATTACHED TO A CARBON BONDED WITH TWO HYDROGEN HAVING AN UNPAIRED ELECTRON) why the methyl group will push the electron towards the electron deficient C atom.

For the given reaction , (A) and (B) are major products. then major product (C) is :

(a) Calculate ΔrG0 for the reaction Mg(s)+Cu2+(aq)→Mg2+(aq)+Cu(s) Given : E0cell=+2.71V,1 F=96500Cmol−1 (b) Name the type of cell which was used in Apollo space programme for providing electrical power.

A metal 'X' forms a body centred cubic lattice whose unit cell edge length is 300 pm. Calculate the density of 'X'.Given: Molar mass of metal 'X' =78 g mol−1

In which case the energy released in minimum and why? A)Cl -&gt; Cl- B) P -&gt; P- C) N-&gt; N- D) C -&gt; C-

ratio of molar heat capacity at cons†an t volume to its specific heat capacity at cons†an t voulme for hydrogen is equal t

How to find limiting reagent?Iam having trouble to find the limitin reagent

For a 'p' electron, the orbital angular momentum is

The standard emf of the cell Fe|Fe2+(aq)||Cd2+(aq)|Cd is 0.0372 V and temperature coefficient of the cell is −1.25×10−4VK−1. Which is/are correct about the cell (at 300 K)?

the maximum percentage of available volumn that can be filled in a face centered cubic system by an atom?

What is subshell

The population P=P(t) at time ‘t′ of a certain species follows the differential equation dPdt=0.5P−450. If P(0)=850, then the time at which population becomes zero is :

Which of the following compounds will have meso isomer also

The number of equivalents of Na2S2O3 required for the volumetric estimation of one equivalent of Cu^2+

In which case the energy released in minimum and why? A)Cl -> Cl- B) P -> P- C) N-> N- D) C -> C-