46295 + Interview Questions in Chemistry

1.	in 1 molal aqueous solution of urea, the mole fraction of urea is
Answer» in 1 molal aqueous solution of urea, the mole fraction of urea is

Discussion

2.	40Q calculate the percentage ionization of.01Maceticacidin.1MHCl Ka of acetic acid is1.8\ast10^-51.18%2.018%31.8%418%
Answer» 40Q calculate the percentage ionization of.01Maceticacidin.1MHCl Ka of acetic acid is1.8\ast10^-51.18%2.018%31.8%418%

Discussion

3.	Question 16 If travelling at same speeds, which of the following matter waves have the shortest wavelength ? (a) Electron (b) Alpha particle (He2+) (c) Neutron (d) Proton
Answer» Question 16 If travelling at same speeds, which of the following matter waves have the shortest wavelength ? (a) Electron (b) Alpha particle $(H e^{2 +})$ (c) Neutron (d) Proton

3.

Question 16 If travelling at same speeds, which of the following matter waves have the shortest wavelength ? (a) Electron (b) Alpha particle (He2+) (c) Neutron (d) Proton

Answer»

Question 16

If travelling at same speeds, which of the following matter waves have the shortest wavelength ?

(a) Electron (b) Alpha particle $(H e^{2 +})$ (c) Neutron (d) Proton

Discussion

4.	Arrange the following in the decreasing order of boiling point:(i) C2H5OH(ii) (CH3)2NH(iii) C2H5NH2
Answer» Arrange the following in the decreasing order of boiling point: (i) $C_{2} H_{5} O H$ (ii) $(C H_{3})_{2} N H$ (iii) $C_{2} H_{5} N H_{2}$

Discussion

5.	The flocculation values of KCl, MgCl2, CrCl3 and SnCl4 for a negatively charged sol are in the order:
Answer» The flocculation values of $K C l$ , $M g C l_{2}$ , $C r C l_{3}$ and $S n C l_{4}$ for a negatively charged sol are in the order:

Discussion

6.	The value for the standard emf (electromotive force) of a galvanic cell described by the balanced chemical equation is 0.79 V. Determine the value of the standard half-cell potential for the I−/I2 couple.Cr2O2−7(aq)+2I−(aq)→I2(g)+Cr3+(aq)E∘Cr2O2−7/Cr3+=1.33 V
Answer» The value for the standard emf (electromotive force) of a galvanic cell described by the balanced chemical equation is $0.79 V$ . Determine the value of the standard half-cell potential for the $I^{-} / I_{2}$ couple. $C r_{2} O_{7}^{2 -} (a q) + 2 I^{-} (a q) \to I_{2} (g) + C r^{3 +} (a q)$ $E_{C r_{2} O_{7}^{2 -} / C r^{3 +}}^{\circ} = 1.33 V$

Discussion

7.	A colourless water soluble organic liquid decomposes Na2CO3 and liberates CO2. It produces a black precipitate with Tollen’s reagent. The liquid is :
Answer» A colourless water soluble organic liquid decomposes $N a_{2} C O_{3}$ and liberates $C O_{2}$ . It produces a black precipitate with Tollen’s reagent. The liquid is :

Discussion

8.	36 1ml of hydrogen peroxide gives 10 ml of oxygen at BTP. I t is a)10 vol hydrogen peroxide b)20 vo of hydrogen peroxide 3)30 vol of hydrogen peroxide 4)40 vol of hydrogen peroxide
Answer» 36 1ml of hydrogen peroxide gives 10 ml of oxygen at BTP. I t is a)10 vol hydrogen peroxide b)20 vo of hydrogen peroxide 3)30 vol of hydrogen peroxide 4)40 vol of hydrogen peroxide

Discussion

9.	What will be the molality of absolution of glucose in water which is 10%w/W?
Answer» What will be the molality of absolution of glucose in water which is 10%w/W?

Discussion

10.	Select equations having endothermic step:
Answer» Select equations having endothermic step:

Discussion

11.	Among the following compounds, which has the maximum lattice energy?
Answer» Among the following compounds, which has the maximum lattice energy?

Discussion

12.	Which one is the absolutely specific term?
Answer» Which one is the absolutely specific term?

Discussion

13.	Which of the following pairs of compounds are diasteriomers?
Answer» Which of the following pairs of compounds are diasteriomers?

Discussion

14.	1. A galvanic cell is set up with a copper electrode in contact with 0.1M CuSO4(aq) and a lead electrode in contact with 0.1M Pb(NO3)2(aq), respectively, at 25ºC. The standard reduction potentials are: Pb2+ + 2 e- → Pb Eº= -0.13 V Cu2+ + 2 e- → Cu Eº= +0.34 V If H2SO4 is being added to the half-cell containing Pb(NO3)2 (thus forming a precipitate of PbSO4) until the final concentration of SO42- ions in solution is 2.4 x 10-1 M, what is the cell potential in Volt? Assume the volume of the the half-cell does not change upon addition of H2SO4. Ksp(PbSO4)=6.3 x 10-7.
Answer» 1. A galvanic cell is set up with a copper electrode in contact with 0.1M CuSO4(aq) and a lead electrode in contact with 0.1M Pb(NO3)2(aq), respectively, at 25ºC. The standard reduction potentials are: Pb2+ + 2 e- → Pb Eº= -0.13 V Cu2+ + 2 e- → Cu Eº= +0.34 V If H2SO4 is being added to the half-cell containing Pb(NO3)2 (thus forming a precipitate of PbSO4) until the final concentration of SO42- ions in solution is 2.4 x 10-1 M, what is the cell potential in Volt? Assume the volume of the the half-cell does not change upon addition of H2SO4. Ksp(PbSO4)=6.3 x 10-7.

Discussion

15.	59. Which shows high bond energy? A)C=_C B)C=_N C)C=_O D)N=_N
Answer» 59. Which shows high bond energy? A)C=_C B)C=_N C)C=_O D)N=_N

Discussion

16.	A gaseous mixture of H2 and CO2 gas contains 66 mass % of CO2 . The vapour density of the mixture is
Answer» A gaseous mixture of $H_{2}$ and $C O_{2}$ gas contains $66$ mass $%$ of $C O_{2}$ . The vapour density of the mixture is

Discussion

17.	Titanium crystallizes in a face centred cubic lattice. It reacts with carbon or hydrogen interstitially by allowing atoms of these elements to occupy holes in the host lattice. Hydrogen occupies tetrahedral holes but carbon occupies octahedral holes the formula of titanium carbide and hydride are
Answer» Titanium crystallizes in a face centred cubic lattice. It reacts with carbon or hydrogen interstitially by allowing atoms of these elements to occupy holes in the host lattice. Hydrogen occupies tetrahedral holes but carbon occupies octahedral holes the formula of titanium carbide and hydride are

Discussion

18.	What is the stability order of single, double and triple bonds?Single>double>triple?As sigma bonds are stronger than pi bonds?
Answer» What is the stability order of single, double and triple bonds? Single>double>triple? As sigma bonds are stronger than pi bonds?

Discussion

19.	Two tautomeric forms of phosphorus acid are:
Answer» Two tautomeric forms of phosphorus acid are:

Discussion

20.	electrode potential oxidation and reduction potential
Answer» electrode potential oxidation and reduction potential

Discussion

21.	CsCl crystallize in cubic cell that has Cl ion at corners and Cs ion at the centre.if radius of anion is 1.81 angstrom and of cation is 1.69 angstrom , then find the edge length
Answer» CsCl crystallize in cubic cell that has Cl ion at corners and Cs ion at the centre.if radius of anion is 1.81 angstrom and of cation is 1.69 angstrom , then find the edge length

Discussion

22.	Carbonation
Answer» Carbonation

Discussion

23.	the number of nuclei of radioactive sample becomes 1/8th part of its initial value N knot in period of 6 years. the mean life of radioactive sample will be
Answer» the number of nuclei of radioactive sample becomes 1/8th part of its initial value N knot in period of 6 years. the mean life of radioactive sample will be

Discussion

24.	How do I remember the elements of the lanthanoid series in ascending order?
Answer» How do I remember the elements of the lanthanoid series in ascending order?

Discussion

25.	18. The wavelength of. Electron in two orbital is 2:5 the ratio of kinetic of electron will be
Answer» 18. The wavelength of. Electron in two orbital is 2:5 the ratio of kinetic of electron will be

Discussion

26.	Empty space in HCP lattice is
Answer» Empty space in HCP lattice is

Discussion

27.	why Boron has very low electrical conductivity, while aluminium of the same group is bigot conductive?
Answer» why Boron has very low electrical conductivity, while aluminium of the same group is bigot conductive?

Discussion

28.	Calculate the pH of 0.2 M NaOCl solution. Ka(HOCl)=3.5×10−8
Answer» Calculate the $p H$ of 0.2 M $N a O C l$ solution. $K_{a} (H O C l) = 3.5 \times 10^{- 8}$

Discussion

29.	Which of the following is not among shortcomings of Bohr’s model' Which of the following is not among shortcomings of Bohr’s model?a) Bohr theory could not account for the fine lines in the atomic spectrumb) Bohr theory was unable to account for the splitting of the spectral lines in the presence of magnetic fieldc) Bohr theory failed for He atomd) It did not give information about energy levelexplain in detail the reason
Answer» Which of the following is not among shortcomings of Bohr’s model' Which of the following is not among shortcomings of Bohr’s model? a) Bohr theory could not account for the fine lines in the atomic spectrum b) Bohr theory was unable to account for the splitting of the spectral lines in the presence of magnetic field c) Bohr theory failed for He atom d) It did not give information about energy level explain in detail the reason

Discussion

30.	Which one of the following ions exhibits d-d transition and paramagnetism as well?
Answer» Which one of the following ions exhibits d-d transition and paramagnetism as well?

Discussion

31.	Radioactive substance becomes (116)th of the original in 80 minutes.Find half-life.
Answer» Radioactive substance becomes ${(\frac{1}{16})}^{t h}$ of the original in 80 minutes.Find half-life.

Discussion

32.	H2O2 2H+ + O2 + 2e- ; E0 = - 0.68V Which of the following nature of H2O2 is represented by the above equation?
Answer» H₂O₂ 2H⁺ + O₂ + 2e^- ; E⁰ = - 0.68V Which of the following nature of $H_{2}$ $O_{2}$ isrepresented by the above equation?

32.

H2O2 2H+ + O2 + 2e- ; E0 = - 0.68V Which of the following nature of H2O2 is represented by the above equation?

Answer»

H₂O₂ 2H⁺ + O₂ + 2e^- ; E⁰ = - 0.68V

Which of the following nature of $H_{2}$ $O_{2}$ isrepresented by the above equation?

Discussion

33.	A liquid system containning two immiscible liquids water and n- butyl bromide distils at 90^° C . Their vapour pressure at this temperature are in the ratio of 5:1 respectively. The ratio of their masses distilled is
Answer» A liquid system containning two immiscible liquids water and n- butyl bromide distils at 90^° C . Their vapour pressure at this temperature are in the ratio of 5:1 respectively. The ratio of their masses distilled is

Discussion

34.	The process of converting one enantiomers of an optically active compound into racemic mixture is called:
Answer» The process of converting one enantiomers of an optically active compound into racemic mixture is called:

Discussion

35.	Match the compounds with the corresponding colour shown by the universal indicator in a concentrated aqueous solution.
Answer» Match the compounds with the corresponding colour shown by the universal indicator in a concentrated aqueous solution.

Discussion

36.	Explain enthalpy.
Answer» Explain enthalpy.

Discussion

37.	Determine the RMS value of a semi circular curve wave which has a maximum value of 'a'
Answer» Determine the RMS value of a semi circular curve wave which has a maximum value of 'a'

Discussion

38.	What are hybridisation states of each carbon atom in the following compounds?CH2=C=O, CH3CH=CH2, (CH3)2CO, CH2=CHCN, C6H6
Answer» What are hybridisation states of each carbon atom in the following compounds? CH₂=C=O, CH₃CH=CH₂, (CH₃)₂CO, CH₂=CHCN, C₆H₆

38.

What are hybridisation states of each carbon atom in the following compounds?CH2=C=O, CH3CH=CH2, (CH3)2CO, CH2=CHCN, C6H6

Answer»

What are hybridisation states of each carbon atom in the following compounds?

CH₂=C=O, CH₃CH=CH₂, (CH₃)₂CO, CH₂=CHCN, C₆H₆

Discussion

39.	A set of solutions is prepared using 180 g of water as a solvent and 10 g of different non-volatile solutes A, B and C. The relative lowering of vapour pressure in the presence of these solutes are in the order [Given, molar mass of A=100 g mo1−1;B=200 g mol−1; C=10,000 g mol−1]
Answer» A set of solutions is prepared using $180 g$ of water as a solvent and $10 g$ of different non-volatile solutes $A, B a n d C$ . The relative lowering of vapour pressure in the presence of these solutes are in the order [Given, molar mass of $A = 100 g m o 1^{- 1}; B = 200 g m o l^{- 1}; C = 10, 000 g m o l^{- 1}]$

Discussion

40.	What is electrochemistry?
Answer» What is electrochemistry?

Discussion

41.	what is mole of gas?
Answer» what is mole of gas?

Discussion

42.	75 What exactly happens in electrolysis of sodium chloride solution?(which product is formed at which electrode etc
Answer» 75 What exactly happens in electrolysis of sodium chloride solution?(which product is formed at which electrode etc

Discussion

43.	Areaction is second order with respect to a reactant. How is the rateof reaction affected if the concentration of the reactant is(i) doubled (ii) reduced to half?
Answer» A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is (i) doubled (ii) reduced to half?

43.

Areaction is second order with respect to a reactant. How is the rateof reaction affected if the concentration of the reactant is(i) doubled (ii) reduced to half?

Answer»

A
reaction is second order with respect to a reactant. How is the rate
of reaction affected if the concentration of the reactant is

(i)
doubled (ii)
reduced to half?

Discussion

44.	The time taken by the galvanic cell which operates almost ideally under reversible conditions at a current of 10-6A to deliver 1 mole of electron is(1) 19.30×1020s (2) 4.825×1020s(3)9.65×1020s (4) 3.4×10*11s
Answer» The time taken by the galvanic cell which operates almost ideally under reversible conditions at a current of 10-6A to deliver 1 mole of electron is (1) 19.30×1020s (2) 4.825×1020s (3)9.65×1020s (4) 3.4×10*11s

Discussion

45.	The resistance of 0.5 M solution of an electrolyte in a cell was found to be 50 Ω. If the electrodes in the cell are 2.2 cm apart and have an area of 4.4 cm2 then the molar conductivity (in Ω−1 cm2 mol−1) of the solution is:
Answer» The resistance of $0.5 M$ solution of an electrolyte in a cell was found to be $50 Ω$ . If the electrodes in the cell are $2.2 cm$ apart and have an area of $4.4 {cm}^{2}$ then the molar conductivity (in $Ω^{- 1} {cm}^{2} {mol}^{- 1}$ ) of the solution is:

Discussion

46.	{GENERAL question}If molecular movement stops at Absolute zero temperature,then is it safe to say that time in that substance has stopped?
Answer» {GENERAL question}If molecular movement stops at Absolute zero temperature,then is it safe to say that time in that substance has stopped?

Discussion

47.	Why is La(OH)3 stronger base than Lu(OH)3?
Answer» Why is La(OH)3 stronger base than Lu(OH)3?

Discussion

48.	46 A 0.01 M ammonia solution is 5% ionised. The concentration of OH- ion is A 0.005M B 0.0001M C 0.0005M D 0.05M
Answer» 46 A 0.01 M ammonia solution is 5% ionised. The concentration of OH- ion is A 0.005M B 0.0001M C 0.0005M D 0.05M

Discussion

49.	Calculate the resultant molarity on mixing 2500 mL of a 2 M HNO3 solution and 189 g of HNO3.
Answer» Calculate the resultant molarity on mixing $2500 m L$ of a $2 M H N O_{3}$ solution and $189 g$ of $H N O_{3}$ .

Discussion

50.	Positronium consist of an electron and a positron orbiting around their common centre of mass .calculate Rydberg constant for this system.
Answer» Positronium consist of an electron and a positron orbiting around their common centre of mass .calculate Rydberg constant for this system.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

in 1 molal aqueous solution of urea, the mole fraction of urea is

40Q calculate the percentage ionization of.01Maceticacidin.1MHCl Ka of acetic acid is1.8\ast10^-51.18%2.018%31.8%418%

Question 16 If travelling at same speeds, which of the following matter waves have the shortest wavelength ? (a) Electron (b) Alpha particle (He2+) (c) Neutron (d) Proton

Arrange the following in the decreasing order of boiling point:(i) C2H5OH(ii) (CH3)2NH(iii) C2H5NH2

The flocculation values of KCl, MgCl2, CrCl3 and SnCl4 for a negatively charged sol are in the order:

The value for the standard emf (electromotive force) of a galvanic cell described by the balanced chemical equation is 0.79 V. Determine the value of the standard half-cell potential for the I−/I2 couple.Cr2O2−7(aq)+2I−(aq)→I2(g)+Cr3+(aq)E∘Cr2O2−7/Cr3+=1.33 V

A colourless water soluble organic liquid decomposes Na2CO3 and liberates CO2. It produces a black precipitate with Tollen’s reagent. The liquid is :

36 1ml of hydrogen peroxide gives 10 ml of oxygen at BTP. I t is a)10 vol hydrogen peroxide b)20 vo of hydrogen peroxide 3)30 vol of hydrogen peroxide 4)40 vol of hydrogen peroxide

What will be the molality of absolution of glucose in water which is 10%w/W?

Select equations having endothermic step:

Among the following compounds, which has the maximum lattice energy?

Which one is the absolutely specific term?

Which of the following pairs of compounds are diasteriomers?

59. Which shows high bond energy? A)C=_C B)C=_N C)C=_O D)N=_N

A gaseous mixture of H2 and CO2 gas contains 66 mass % of CO2 . The vapour density of the mixture is

Titanium crystallizes in a face centred cubic lattice. It reacts with carbon or hydrogen interstitially by allowing atoms of these elements to occupy holes in the host lattice. Hydrogen occupies tetrahedral holes but carbon occupies octahedral holes the formula of titanium carbide and hydride are

What is the stability order of single, double and triple bonds?Single>double>triple?As sigma bonds are stronger than pi bonds?

Two tautomeric forms of phosphorus acid are:

electrode potential oxidation and reduction potential

CsCl crystallize in cubic cell that has Cl ion at corners and Cs ion at the centre.if radius of anion is 1.81 angstrom and of cation is 1.69 angstrom , then find the edge length

Carbonation

the number of nuclei of radioactive sample becomes 1/8th part of its initial value N knot in period of 6 years. the mean life of radioactive sample will be

How do I remember the elements of the lanthanoid series in ascending order?

18. The wavelength of. Electron in two orbital is 2:5 the ratio of kinetic of electron will be

Empty space in HCP lattice is

why Boron has very low electrical conductivity, while aluminium of the same group is bigot conductive?

Calculate the pH of 0.2 M NaOCl solution. Ka(HOCl)=3.5×10−8

Which one of the following ions exhibits d-d transition and paramagnetism as well?

Radioactive substance becomes (116)th of the original in 80 minutes.Find half-life.

H2O2 2H+ + O2 + 2e- ; E0 = - 0.68V Which of the following nature of H2O2 is represented by the above equation?

A liquid system containning two immiscible liquids water and n- butyl bromide distils at 90^° C . Their vapour pressure at this temperature are in the ratio of 5:1 respectively. The ratio of their masses distilled is

The process of converting one enantiomers of an optically active compound into racemic mixture is called:

Match the compounds with the corresponding colour shown by the universal indicator in a concentrated aqueous solution.

Explain enthalpy.

Determine the RMS value of a semi circular curve wave which has a maximum value of 'a'

What are hybridisation states of each carbon atom in the following compounds?CH2=C=O, CH3CH=CH2, (CH3)2CO, CH2=CHCN, C6H6

A set of solutions is prepared using 180 g of water as a solvent and 10 g of different non-volatile solutes A, B and C. The relative lowering of vapour pressure in the presence of these solutes are in the order [Given, molar mass of A=100 g mo1−1;B=200 g mol−1; C=10,000 g mol−1]

What is electrochemistry?

what is mole of gas?

75 What exactly happens in electrolysis of sodium chloride solution?(which product is formed at which electrode etc

Areaction is second order with respect to a reactant. How is the rateof reaction affected if the concentration of the reactant is(i) doubled (ii) reduced to half?

The time taken by the galvanic cell which operates almost ideally under reversible conditions at a current of 10*-6A to deliver 1 mole of electron is(1) 19.30×10*20s (2) 4.825×10*20s(3)9.65×10*20s (4) 3.4×10*11s

The resistance of 0.5 M solution of an electrolyte in a cell was found to be 50 Ω. If the electrodes in the cell are 2.2 cm apart and have an area of 4.4 cm2 then the molar conductivity (in Ω−1 cm2 mol−1) of the solution is:

{GENERAL question}If molecular movement stops at Absolute zero temperature,then is it safe to say that time in that substance has stopped?

Why is La(OH)3 stronger base than Lu(OH)3?

46 A 0.01 M ammonia solution is 5% ionised. The concentration of OH- ion is A 0.005M B 0.0001M C 0.0005M D 0.05M

Calculate the resultant molarity on mixing 2500 mL of a 2 M HNO3 solution and 189 g of HNO3.

Positronium consist of an electron and a positron orbiting around their common centre of mass .calculate Rydberg constant for this system.

The time taken by the galvanic cell which operates almost ideally under reversible conditions at a current of 10-6A to deliver 1 mole of electron is(1) 19.30×1020s (2) 4.825×1020s(3)9.65×1020s (4) 3.4×10*11s