46295 + Interview Questions in Chemistry

1.	Select the correct meaning of the given phrases/idioms. Carry on
Answer» Select the correct meaning of the given phrases/idioms. Carry on

1.

Select the correct meaning of the given phrases/idioms. Carry on

Answer»

Select the correct meaning of the given phrases/idioms.

Carry on

2.	Ratio of radii of orbits in two different orbits of H− atom is 4:9, then possible ratio of energy for these two orbits is:
Answer» Ratio of radii of orbits in two different orbits of $H -$ atom is $4 : 9$ , then possible ratio of energy for these two orbits is:

Discussion

3.	The latent heat of fusion of ice is 330 J g−1. Calculate the number of photons of radiation of frequency 5×1013 s−1 to cause the melting of 1 mole of ice. Take h=6.6×10−34 J s. Express your answer as X×1023, what is the value of X?
Answer» The latent heat of fusion of ice is $330 {J g}^{- 1}$ . Calculate the number of photons of radiation of frequency $5 \times 10^{13} s^{- 1}$ to cause the melting of 1 mole of ice. Take $h = 6.6 \times 10^{- 34} J s$ . Express your answer as $X \times 10^{23}$ , what is the value of $X$ ?

Discussion

4.	If y=xsin nx, then dy/dx at x= 2(pi) is a] 2(pi)/nb] 2n/(pi)c] 2n(pi)d] zero
Answer» If y=xsin nx, then dy/dx at x= 2(pi) is a] 2(pi)/n b] 2n/(pi) c] 2n(pi) d] zero

Discussion

5.	how to determine order of these sort of reactions
Answer» how to determine order of these sort of reactions

Discussion

6.	33. Calculate the number of unit cells in 8.1g of aluminium if it crystallizes in a face centred cubic (fcc) structure.
Answer» 33. Calculate the number of unit cells in 8.1g of aluminium if it crystallizes in a face centred cubic (fcc) structure.

Discussion

7.	29. EA>0. Is the reaction endothermic or exothermic
Answer» 29. EA>0. Is the reaction endothermic or exothermic

Discussion

8.	15. Why does molarity becomes equal to molality on infinite dilution?
Answer» 15. Why does molarity becomes equal to molality on infinite dilution?

Discussion

9.	What are the expectedproducts of hydrolysis of lactose?
Answer» What are the expected products of hydrolysis of lactose?

Discussion

10.	Two spherical soap bubbles of radii r1 and r2 in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to
Answer» Two spherical soap bubbles of radii $r_{1}$ and $r_{2}$ in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to

Discussion

11.	Consider the following redox reactions given below. Identify which of the following the example of a disproportionation reaction?
Answer» Consider the following redox reactions given below. Identify which of the following the example of a disproportionation reaction?

Discussion

12.	Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of K2SO4 and BaSO4 is dissolved in 900 gm of pure water to form a solution ‘A’ at 57∘C, its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at 57∘C is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure BaSO4 is mixed with water at 57∘C it gives the osmotic rise of 4.05×10−5 atm. (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Solubility product of BaSO4 in water at 57∘C is :
Answer» Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of $K_{2} S O_{4}$ and $B a S O_{4}$ is dissolved in 900 gm of pure water to form a solution ‘A’ at $57^{\circ} C$ , its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at $57^{\circ} C$ is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure $B a S O_{4}$ is mixed with water at $57^{\circ} C$ it gives the osmotic rise of $4.05 \times 10^{- 5} atm$ . (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Solubility product of $B a S O_{4}$ in water at $57^{\circ} C$ is :

12.

Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy. If a 40.65 gm sample of K2SO4 and BaSO4 is dissolved in 900 gm of pure water to form a solution ‘A’ at 57∘C, its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at 57∘C is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure BaSO4 is mixed with water at 57∘C it gives the osmotic rise of 4.05×10−5 atm. (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16) Solubility product of BaSO4 in water at 57∘C is :

Answer»

Colligative property measurement is one of the techniques used in the measurement of chemical quantitates with reasonably accuracy.

If a 40.65 gm sample of $K_{2} S O_{4}$ and $B a S O_{4}$ is dissolved in 900 gm of pure water to form a solution ‘A’ at $57^{\circ} C$ , its vapour pressure is found to be 39.6 torr while vapour pressure of pure water at $57^{\circ} C$ is 40 torr. Density of solution A is 1.24 g/ml. In a different experiment when small amount of pure $B a S O_{4}$ is mixed with water at $57^{\circ} C$ it gives the osmotic rise of $4.05 \times 10^{- 5} atm$ . (r = 0.082 Lt-atom/mol - K ; K = 39, Ba = 137, S = 32, O = 16)

Solubility product of $B a S O_{4}$ in water at $57^{\circ} C$ is :

Discussion

13.	Which one of the following is not represented by sols [MP PMT 1992]
Answer» Which one of the following is not represented by sols [MP PMT 1992]

Discussion

14.	Alkyl halides reacts with magnesium isocyanide
Answer» Alkyl halides reacts with magnesium isocyanide

Discussion

15.	42.Explain compound corymb with diagram
Answer» 42.Explain compound corymb with diagram

Discussion

16.	If a pure solvent A boils at 127∘C, then calculate the value of ebullioscopic constant of that solvent.Given :The enthalpy of vapourisation of solvent is 8000 cal mol−1Molar mass of the solvent is 80 g/molR(ideal gas constant)≈2 cal mol−1 K−1
Answer» If a pure solvent A boils at $127^{\circ} C$ , then calculate the value of ebullioscopic constant of that solvent. Given :The enthalpy of vapourisation of solvent is $8000 c a l m o l^{- 1}$ Molar mass of the solvent is $80 g / m o l$ $R (ideal gas constant) \approx 2 c a l m o l^{- 1} K^{- 1}$

Discussion

17.	Find the number of dative bonds in so3 Also calculate the central atom's number of electron
Answer» Find the number of dative bonds in so3 Also calculate the central atom's number of electron

Discussion

18.	Expalin Dipole moment.
Answer» Expalin Dipole moment.

Discussion

19.	Adsorption isotherm
Answer» Adsorption isotherm

Discussion

20.	Which of the following compounds decomposes NaHCO3 solution?
Answer» Which of the following compounds decomposes NaHCO₃ solution?

Discussion

21.	How hcp and FCC have same packing fraction?
Answer» How hcp and FCC have same packing fraction?

Discussion

22.	Consider the following statements .(i) Hybridization of central atom in cation of PCl5(s) and PBr5(s) is same.(ii) Anionic form of PCl5(s) contains only eight bond angles 900 each.(iii) XeF4 and BrF4- are isostructural .(iv) Hybridization of central atom changes when NH3 combines with H+ (v) A σ bond can be formed between two px orbitals containing one unpaired electron each when they approach each other appropriately along x-axis.(vi) ClF3 is T-shaped.(vii) The correct order of oxygen-oxygen bond length is H2O2 > O3> O2. Out of the above statements , x is correct then value of x2 is
Answer» Consider the following statements . (i) Hybridization of central atom in cation of PCl5(s) and PBr5(s) is same. (ii) Anionic form of PCl5(s) contains only eight bond angles 900 each. (iii) XeF4 and BrF4- are isostructural . (iv) Hybridization of central atom changes when NH3 combines with H+ (v) A σ bond can be formed between two px orbitals containing one unpaired electron each when they approach each other appropriately along x-axis. (vi) ClF3 is T-shaped. (vii) The correct order of oxygen-oxygen bond length is H2O2 > O3> O2. Out of the above statements , x is correct then value of x2 is

Discussion

23.	{ If }z is a complex number satisfying }12008z-11=}{2008\vert z-2\vert, then locus z is
Answer» { If }z is a complex number satisfying }12008z-11=}{2008\vert z-2\vert, then locus z is

Discussion

24.	1. What is mixture and it types explain
Answer» 1. What is mixture and it types explain

Discussion

25.	Which of the following shows carbyl amine reactionA. Aniline B. Ethyl methyl amineC. Tertiary butyl amine D. Isopropyl amineThe correct answer is
Answer» Which of the following shows carbyl amine reaction A. Aniline B. Ethyl methyl amine C. Tertiary butyl amine D. Isopropyl amine The correct answer is

25.

Which of the following shows carbyl amine reactionA. Aniline B. Ethyl methyl amineC. Tertiary butyl amine D. Isopropyl amineThe correct answer is

Answer» Which of the following shows carbyl amine reaction

A. Aniline B. Ethyl methyl amine

C. Tertiary butyl amine D. Isopropyl amine

The correct answer is

Discussion

26.	A mixture of O2 and gas Y (molecular weight =80) in the molar ratio a:b has a mean molecular weight 40. What would be mean molecular weight, if the gases are mixed in the ratio b:a under identical conditions? (Gases are non-reacting)
Answer» A mixture of $O_{2}$ and gas $Y$ (molecular weight $= 80$ ) in the molar ratio $a : b$ has a mean molecular weight $40$ . What would be mean molecular weight, if the gases are mixed in the ratio $b : a$ under identical conditions? (Gases are non-reacting)

Discussion

27.	The energy of the electron in the first orbit of He+ is 871.6×10−20J. The energy of the electron in the first orbit of hydrogen would be
Answer» The energy of the electron in the first orbit of He+ is $871.6 \times 10^{- 20} J$ . The energy of the electron in the first orbit of hydrogen would be

Discussion

28.	ASSERTION: Both bond angles and bond lengths remain same in conformers of ethaneREASON: H-CN and H-NC(isocyanide) are tautomers (also functional isomers) while R-CN and R-NC are only functional isomers
Answer» ASSERTION: Both bond angles and bond lengths remain same in conformers of ethane REASON: H-CN and H-NC(isocyanide) are tautomers (also functional isomers) while R-CN and R-NC are only functional isomers

Discussion

29.	In a reaction, Normal Egg → hard boiled egg, Δ S is
Answer» In a reaction, Normal Egg $\to$ hard boiled egg, $Δ S$ is

Discussion

30.	a drop of olive oil of radius is 0.25mm spread into a circular film of radius 10cm.on the water surface estimate the molecular size of olive oil
Answer» a drop of olive oil of radius is 0.25mm spread into a circular film of radius 10cm.on the water surface estimate the molecular size of olive oil

Discussion

31.	The reaction of t-butyl chloride and sodium ethoxide gives mainly
Answer» The reaction of t-butyl chloride and sodium ethoxide gives mainly

Discussion

32.	What are the four laws of cleavage? Explain.
Answer» What are the four laws of cleavage? Explain.

Discussion

33.	What is the relation between osmotic pressure and elevation in boiling point
Answer» What is the relation between osmotic pressure and elevation in boiling point

Discussion

34.	x = moles of HCHO consumed. Value of (x) will be
Answer» x = moles of $H C H O$ consumed. Value of (x) will be

Discussion

35.	10. Find density of a 3.6 M sulphuric acid solution that is 29% H2SO4 by mass ?
Answer» 10. Find density of a 3.6 M sulphuric acid solution that is 29% H2SO4 by mass ?

Discussion

36.	What will be the correct IUPAC name for the following compound ?
Answer» What will be the correct IUPAC name for the following compound ?

Discussion

37.	In the conversion of 0.01 mole of lead sulphide to lead sulphate; the volume of 10volume hydrogen peroxide required will be
Answer» In the conversion of 0.01 mole of lead sulphide to lead sulphate; the volume of 10volume hydrogen peroxide required will be

Discussion

38.	Of the following sets which one does NOT contain isoelectronic species
Answer» Of the following sets which one does NOT contain isoelectronic species

Discussion

39.	76 A mosture of C2H6 , C2H4 , C2H2 is bubbled through alkaline solution of copper (l) chloride, contained in woulf's bottle. The gas coming out is
Answer» 76 A mosture of C2H6 , C2H4 , C2H2 is bubbled through alkaline solution of copper (l) chloride, contained in woulf's bottle. The gas coming out is

Discussion

40.	58 Explain Ring contraction in carbocations with conditions where it is applied or not?
Answer» 58 Explain Ring contraction in carbocations with conditions where it is applied or not?

Discussion

41.	The compound usually added to chloroform to retard the effect of oxidation is a) ethyl chloride b) ethyl carbonate c) ethanol d)sodium carbonate
Answer» The compound usually added to chloroform to retard the effect of oxidation is a) ethyl chloride b) ethyl carbonate c) ethanol d)sodium carbonate

Discussion

42.	Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2SO2
Answer» Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2 SO2

Discussion

43.	p-amino azo benzene is obtained by treating diazoniumchloride with:
Answer» p-amino azo benzene is obtained by treating diazoniumchloride with:

Discussion

44.	The first and second dissociation constants of an acid, H2A are 1.0×10−5 and 5.0×10−10 respectively. The overall dissociation constant of the acid will
Answer» The first and second dissociation constants of an acid, $H_{2} A$ are $1.0 \times 10^{- 5}$ and $5.0 \times 10^{- 10}$ respectively. The overall dissociation constant of the acid will

Discussion

45.	What is the product formed when sodium tert-butoxide reacts with bromoethane?
Answer» What is the product formed when sodium tert-butoxide reacts with bromoethane?

Discussion

46.	Why do not we show electron pairs on resonance hybride of ozone molecule?
Answer» Why do not we show electron pairs on resonance hybride of ozone molecule?

Discussion

47.	Most stable complex ion is and why - (1) \lbrack Fe(CI_6)\rbrack^{-3} (2)\lbrack Fe(CN)_6\rbrack^{-3} (3) \lbrack Fe(CN)_6\rbrack^{-4} (4) \lbrack Fe(H_2O)_6\rbrack^+
Answer» Most stable complex ion is and why - (1) \lbrack Fe(CI_6)\rbrack^{-3} (2)\lbrack Fe(CN)_6\rbrack^{-3} (3) \lbrack Fe(CN)_6\rbrack^{-4} (4) \lbrack Fe(H_2O)_6\rbrack^+

Discussion

48.	(i) Write the IUPAC name of the following compounds. CH3−CH\|CH3−CH\|OH−CH\|C2H5−CH\|OH−CH3 (ii) Write the IUPAC name of the following compound
Answer» (i) Write the IUPAC name of the following compounds. $C H_{3} - C H \| C H_{3} - C H \| O H - C H \| C_{2} H_{5} - C H \| O H - C H_{3}$ (ii) Write the IUPAC name of the following compound

48.

(i) Write the IUPAC name of the following compounds. CH3−CH|CH3−CH|OH−CH|C2H5−CH|OH−CH3 (ii) Write the IUPAC name of the following compound

Answer»

(i) Write the IUPAC name of the following compounds.
$C H_{3} - C H | C H_{3} - C H | O H - C H | C_{2} H_{5} - C H | O H - C H_{3}$

(ii) Write the IUPAC name of the following compound

Discussion

49.	Consider two reactionsI. Zn+conc.HNO3(hot)→Zn(NO3)2+X+H2OII. Zn+dil.HNO3 (cold)→Zn(NO3)2+Y+H2OCompounds X and Y are respectively
Answer» Consider two reactions I. $Z n + c o n c . H N O_{3} (h o t) \to Z n (N O_{3})_{2} + X + H_{2} O$ II. $Z n + d i l . H N O_{3} (cold) \to Z n (N O_{3})_{2} + Y + H_{2} O$ Compounds X and Y are respectively

Discussion

50.	Which of the following ions is most effective in the coagulation of an arsenic sulphide sol?
Answer» Which of the following ions is most effective in the coagulation of an arsenic sulphide sol?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Select the correct meaning of the given phrases/idioms. Carry on

Ratio of radii of orbits in two different orbits of H− atom is 4:9, then possible ratio of energy for these two orbits is:

The latent heat of fusion of ice is 330 J g−1. Calculate the number of photons of radiation of frequency 5×1013 s−1 to cause the melting of 1 mole of ice. Take h=6.6×10−34 J s. Express your answer as X×1023, what is the value of X?

If y=xsin nx, then dy/dx at x= 2(pi) is a] 2(pi)/nb] 2n/(pi)c] 2n(pi)d] zero

how to determine order of these sort of reactions

33. Calculate the number of unit cells in 8.1g of aluminium if it crystallizes in a face centred cubic (fcc) structure.

29. EA>0. Is the reaction endothermic or exothermic

15. Why does molarity becomes equal to molality on infinite dilution?

What are the expectedproducts of hydrolysis of lactose?

Two spherical soap bubbles of radii r1 and r2 in vacuum combine under isothermal conditions. The resulting bubble has a radius equal to

Consider the following redox reactions given below. Identify which of the following the example of a disproportionation reaction?

Which one of the following is not represented by sols [MP PMT 1992]

Alkyl halides reacts with magnesium isocyanide

42.Explain compound corymb with diagram

If a pure solvent A boils at 127∘C, then calculate the value of ebullioscopic constant of that solvent.Given :The enthalpy of vapourisation of solvent is 8000 cal mol−1Molar mass of the solvent is 80 g/molR(ideal gas constant)≈2 cal mol−1 K−1

Find the number of dative bonds in so3 Also calculate the central atom's number of electron

Expalin Dipole moment.

Adsorption isotherm

Which of the following compounds decomposes NaHCO3 solution?

How hcp and FCC have same packing fraction?

{ If }z is a complex number satisfying }12008z-11=}{2008\vert z-2\vert, then locus z is

1. What is mixture and it types explain

Which of the following shows carbyl amine reactionA. Aniline B. Ethyl methyl amineC. Tertiary butyl amine D. Isopropyl amineThe correct answer is

A mixture of O2 and gas Y (molecular weight =80) in the molar ratio a:b has a mean molecular weight 40. What would be mean molecular weight, if the gases are mixed in the ratio b:a under identical conditions? (Gases are non-reacting)

The energy of the electron in the first orbit of He+ is 871.6×10−20J. The energy of the electron in the first orbit of hydrogen would be

ASSERTION: Both bond angles and bond lengths remain same in conformers of ethaneREASON: H-CN and H-NC(isocyanide) are tautomers (also functional isomers) while R-CN and R-NC are only functional isomers

In a reaction, Normal Egg → hard boiled egg, Δ S is

a drop of olive oil of radius is 0.25mm spread into a circular film of radius 10cm.on the water surface estimate the molecular size of olive oil

The reaction of t-butyl chloride and sodium ethoxide gives mainly

What are the four laws of cleavage? Explain.

What is the relation between osmotic pressure and elevation in boiling point

x = moles of HCHO consumed. Value of (x) will be

10. Find density of a 3.6 M sulphuric acid solution that is 29% H2SO4 by mass ?

What will be the correct IUPAC name for the following compound ?

In the conversion of 0.01 mole of lead sulphide to lead sulphate; the volume of 10volume hydrogen peroxide required will be

Of the following sets which one does NOT contain isoelectronic species

76 A mosture of C2H6 , C2H4 , C2H2 is bubbled through alkaline solution of copper (l) chloride, contained in woulf's bottle. The gas coming out is

58 Explain Ring contraction in carbocations with conditions where it is applied or not?

The compound usually added to chloroform to retard the effect of oxidation is a) ethyl chloride b) ethyl carbonate c) ethanol d)sodium carbonate

Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2SO2

p-amino azo benzene is obtained by treating diazoniumchloride with:

The first and second dissociation constants of an acid, H2A are 1.0×10−5 and 5.0×10−10 respectively. The overall dissociation constant of the acid will

What is the product formed when sodium tert-butoxide reacts with bromoethane?

Why do not we show electron pairs on resonance hybride of ozone molecule?

Most stable complex ion is and why - (1) \lbrack Fe(CI_6)\rbrack^{-3} (2)\lbrack Fe(CN)_6\rbrack^{-3} (3) \lbrack Fe(CN)_6\rbrack^{-4} (4) \lbrack Fe(H_2O)_6\rbrack^+

(i) Write the IUPAC name of the following compounds. CH3−CH|CH3−CH|OH−CH|C2H5−CH|OH−CH3 (ii) Write the IUPAC name of the following compound

Consider two reactionsI. Zn+conc.HNO3(hot)→Zn(NO3)2+X+H2OII. Zn+dil.HNO3 (cold)→Zn(NO3)2+Y+H2OCompounds X and Y are respectively

Which of the following ions is most effective in the coagulation of an arsenic sulphide sol?