46295 + Interview Questions in Chemistry

1.	Draw Lewis dot structure of HNO3 and mention Co-ordinate bond wherever required.
Answer» Draw Lewis dot structure of HNO3 and mention Co-ordinate bond wherever required.

Discussion

2.	2.76 g of silver carbonates on being strongly heated yield a residue weighing.
Answer» 2.76 g of silver carbonates on being strongly heated yield a residue weighing.

Discussion

3.	Determine the amount of ester present under equilibrium when 3 moles of ethyl alcohol react with 1 mole of acetic acid, when equilibium constant of the reaction is given as 4.
Answer» Determine the amount of ester present under equilibrium when 3 moles of ethyl alcohol react with 1 mole of acetic acid, when equilibium constant of the reaction is given as 4.

Discussion

4.	Why the Vander Waal's radii of N,O and F do not show the same trend as in case of covalent radii O>F>N
Answer» Why the Vander Waal's radii of N,O and F do not show the same trend as in case of covalent radii O>F>N

Discussion

5.	Halogenation of alkanes is [KCET 2002]
Answer» Halogenation of alkanes is [KCET 2002]

5.

Halogenation of alkanes is [KCET 2002]

Answer»

Halogenation of alkanes is

[KCET 2002]

Discussion

6.	the ratio of sigma bomd and pi bond in tetracynoethylene i
Answer» the ratio of sigma bomd and pi bond in tetracynoethylene i

Discussion

7.	The correct thermodynamic conditions for the spontaneous reaction at all temperature is:
Answer» The correct thermodynamic conditions for the spontaneous reaction at all temperature is:

Discussion

8.	Hybridization is determined of a particular carbon atom in the organic compound or of the entire compound
Answer» Hybridization is determined of a particular carbon atom in the organic compound or of the entire compound

Discussion

9.	in bohr seriesof lines of hydrogen spectrum , the third line from the red end corresponds to which one of the following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? (a) 3 to 2 (B) 5 to 2 (C)4 to 1 (D)2 to 5 And give reason
Answer» in bohr seriesof lines of hydrogen spectrum , the third line from the red end corresponds to which one of the following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? (a) 3 to 2 (B) 5 to 2 (C)4 to 1 (D)2 to 5 And give reason

Discussion

10.	Can all anions act as ligands ?
Answer» Can all anions act as ligands ?

Discussion

11.	A certain amount of a metal whose equivalent mass is 28 displaces 0.7L of H2 at S.T.P from an acid hence mass of the element is
Answer» A certain amount of a metal whose equivalent mass is 28 displaces 0.7L of H2 at S.T.P from an acid hence mass of the element is

Discussion

12.	Of the following, which is the product formed when cyclohexanone undergoes undergoes aldol condensation followed by heating ?
Answer» Of the following, which is the product formed when cyclohexanone undergoes undergoes aldol condensation followed by heating ?

Discussion

13.	What is meant by Enthalpy?
Answer» What is meant by Enthalpy?

Discussion

14.	20ml of 0.2 M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2 . What is concentration of Cl- ion in the solution?
Answer» 20ml of 0.2 M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2 . What is concentration of Cl- ion in the solution?

Discussion

15.	The density of ice at 0 degree centigrade is 0.915g/cc and that of liquid water at 0 degree centigrade is 0.99987 g/cc. The work done for melting 1 mole of ice at 1.00 bar ( assuming work is done only due to expansion) is approximately a) 0.17 J b) 1.7 × 1000 J C)0.000017 J
Answer» The density of ice at 0 degree centigrade is 0.915g/cc and that of liquid water at 0 degree centigrade is 0.99987 g/cc. The work done for melting 1 mole of ice at 1.00 bar ( assuming work is done only due to expansion) is approximately a) 0.17 J b) 1.7 × 1000 J C)0.000017 J

Discussion

16.	The compound in which carbon uses only its sp3 hybrid orbitals for bond formation is
Answer» The compound in which carbon uses only its $s p^{3}$ hybrid orbitals for bond formation is

16.

The compound in which carbon uses only its sp3 hybrid orbitals for bond formation is

Answer»

The compound in which carbon uses only its $s p^{3}$ hybrid orbitals for bond formation is

Discussion

17.	Oxidation state of oxygen in ozone
Answer» Oxidation state of oxygen in ozone

Discussion

18.	1kg ice at -10^°c is mixed 1kg water at 50^°c.Then find equilibrium temperature and mixture content.
Answer» 1kg ice at -10^°c is mixed 1kg water at 50^°c.Then find equilibrium temperature and mixture content.

Discussion

19.	25. Which of the following 0.1 M solution will contain the largest conceentratiion of Hydronium ions ? A NaHCO3 B NH4Cl C HCl D NH3
Answer» 25. Which of the following 0.1 M solution will contain the largest conceentratiion of Hydronium ions ? A NaHCO3 B NH4Cl C HCl D NH3

Discussion

20.	Match the items in column I with their respective values in column II. 1. According to Bohr's thoeryEn = Total energyKn = Kinetic energyVn = Potential energyrn = Radius of nth orbit energyColumn IColumn IIa.VnKn=?p.0b.If radius ofnthorbit∝Exn,x=?q.−1c.Angular momentum in lowest orbitalr.−2d.1rn∝Zy,y=?s.1
Answer» Match the items in column I with their respective values in column II. 1. According to Bohr's thoery $E_{n}$ = Total energy $K_{n}$ = Kinetic energy $V_{n}$ = Potential energy $r_{n}$ = Radius of nth orbit energy $\begin{matrix} Column I & Column II a . \frac{V_{n}}{K_{n}} = ? & p . 0 b . If radius of n^{t h} orbit \propto E_{n}^{x}, x = ? & q . - 1 c . Angular momentum in lowest orbital & r . - 2 d . \frac{1}{r_{n}} \propto Z^{y}, y = ? & s .1 \end{matrix}$

20.

Match the items in column I with their respective values in column II. 1. According to Bohr's thoeryEn = Total energyKn = Kinetic energyVn = Potential energyrn = Radius of nth orbit energyColumn IColumn IIa.VnKn=?p.0b.If radius ofnthorbit∝Exn,x=?q.−1c.Angular momentum in lowest orbitalr.−2d.1rn∝Zy,y=?s.1

Answer»

Match the items in column I with their respective values in column II.

1. According to Bohr's thoery

$E_{n}$ = Total energy

$K_{n}$ = Kinetic energy

$V_{n}$ = Potential energy

$r_{n}$ = Radius of nth orbit energy

$\begin{matrix} Column I & Column II a . \frac{V_{n}}{K_{n}} = ? & p . 0 b . If radius of n^{t h} orbit \propto E_{n}^{x}, x = ? & q . - 1 c . Angular momentum in lowest orbital & r . - 2 d . \frac{1}{r_{n}} \propto Z^{y}, y = ? & s .1 \end{matrix}$

Discussion

21.	The molar heat capacity in a process where a diatomic gas does a work of Q/4 when a heat of Q is supplied to it is
Answer» The molar heat capacity in a process where a diatomic gas does a work of $Q / 4$ when a heat of $Q$ is supplied to it is

Discussion

22.	38.How many π-bonds present in [Ni(CO)4]?
Answer» 38.How many π-bonds present in [Ni(CO)4]?

Discussion

23.	AB has ZnS type structure. What will be interionic distance between A+ and B- if lattice constant of AB is 200pm?
Answer» AB has ZnS type structure. What will be interionic distance between A+ and B- if lattice constant of AB is 200pm?

Discussion

24.	group.6 A : Acetamide has more polar C-O groupthan in ethyl acetoacetate.R: NH is more electron donating than OC2H,(2007)
Answer» group.6 A : Acetamide has more polar C-O groupthan in ethyl acetoacetate.R: NH is more electron donating than OC2H,(2007)

Discussion

25.	CH3CH2CH2Braq. NaOH−−−−−−→(X)Al2O3−−−→Δ(Y)HOCl−−−→(Z) Major product (Z) is:
Answer» $C H_{3} C H_{2} C H_{2} B r a q . N a O H - ----- \to (X) A l_{2} O_{3} - -- \to Δ (Y) H O C l - -- \to (Z)$ Major product (Z) is:

Discussion

26.	particles of mass 1kg ,2kg,3kg ,are so placed that their is at origin. find where should a 4 kg mass be placed so that COM of the system comes ( 2,1,3) ?
Answer» particles of mass 1kg ,2kg,3kg ,are so placed that their is at origin. find where should a 4 kg mass be placed so that COM of the system comes ( 2,1,3) ?

Discussion

27.	give the order of bond length O_2, Na_2O_{2, }O_2(PtF_6), KO_{
Answer» give the order of bond length O_2, Na_2O_{2, }O_2(PtF_6), KO_{

Discussion

28.	Aspirin is a:
Answer» Aspirin is a:

Discussion

29.	65. Find the density in g/ml of a 3.6M sulphuric acid solution that is 29%Suphuric acid by mass.
Answer» 65. Find the density in g/ml of a 3.6M sulphuric acid solution that is 29%Suphuric acid by mass.

Discussion

30.	48.What is the oxidation number of metal in TlI3
Answer» 48.What is the oxidation number of metal in TlI3

Discussion

31.	What are neutrons? Who discovered these particles?
Answer» What are neutrons? Who discovered these particles?

Discussion

32.	A water treatment plant treating 10 MLD of water requires 20 mg/L of filter Alum Al2(SO4)3.18H20. Water has 6 mg/L of alkalinity as CaCO3 .( Al = 26.97, S = 32, 0 = 16, H = 1, Ca = 40, and C = 12) Total alkalinity requirement (106 mg per day as CaCO3) matching filter alum, shall be
Answer» A water treatment plant treating 10 MLD of water requires 20 $m g / L$ of filter Alum $A l_{2} (S O_{4})_{3} .18 H_{2} 0$ . Water has 6 $m g / L$ of alkalinity as $C a C O_{3}$ . ( Al = 26.97, S = 32, 0 = 16, H = 1, Ca = 40, and C = 12) Total alkalinity requirement ( $10^{6}$ mg per day as $C a C O_{3}$ ) matching filter alum, shall be

Discussion

33.	When a mixture of nabr and nacl digested with sulphuric acid all the halogens are expelled and na2so4 is formed quantitatively with a particular mixture it was found that the weight of na2 so4 obtained was precisely the same as the weight of nabr - nacl mixture taken calculate the ratio of the weights of nacl and nabr in the mixture .
Answer» When a mixture of nabr and nacl digested with sulphuric acid all the halogens are expelled and na2so4 is formed quantitatively with a particular mixture it was found that the weight of na2 so4 obtained was precisely the same as the weight of nabr - nacl mixture taken calculate the ratio of the weights of nacl and nabr in the mixture .

Discussion

34.	Among methanol and phenol which one shows higher intermolecular hydrogen bondingj and why
Answer» Among methanol and phenol which one shows higher intermolecular hydrogen bondingj and why

Discussion

35.	urment of 100 A is paRsed through 1.0 of 10.M HCIkolution for 965 80conds, ph of the solution at the end of the 14TheJAMU Med. 2012)(b) 0.20d None of the aboveeperimetit is
Answer» urment of 100 A is paRsed through 1.0 of 10.M HCIkolution for 965 80conds, ph of the solution at the end of the 14TheJAMU Med. 2012)(b) 0.20d None of the aboveeperimetit is

Discussion

36.	What is the significance of 3+ in [Co(CN)6]3+ ? How does it affect the oxidation state of Cobalt ?
Answer» What is the significance of 3+ in [Co(CN)₆]³⁺? How does it affect the oxidation state of Cobalt ?

Discussion

37.	According to Moseley, a straight line graph is obtained on plotting
Answer» According to Moseley, a straight line graph is obtained on plotting

Discussion

38.	Nitration of salicylic acid
Answer» Nitration of salicylic acid

Discussion

39.	Calculate the mass of a photon with wavelength 3.6˚A.
Answer» Calculate the mass of a photon with wavelength $3.6 ˚ A$ .

Discussion

40.	A compound is formed by elements X and Y, which has a cubic structure in which X atoms are at the corners and two Y atoms are at each body diagonal of the cube. If all atoms from one body diagonal of the cube except corners are removed, calculate- 1) Z_{eff} ,2) total number of atoms in the cube, 3) formula of the compound
Answer» A compound is formed by elements X and Y, which has a cubic structure in which X atoms are at the corners and two Y atoms are at each body diagonal of the cube. If all atoms from one body diagonal of the cube except corners are removed, calculate- 1) Z_{eff} ,2) total number of atoms in the cube, 3) formula of the compound

Discussion

41.	Liquids A and B form ideal solution for all compositions of A and B at 25∘C. Two such solutions with 0.25 and 0.50 mole fractions of A have the total vapor pressures of 0.3 and 0.4 bar, respectively. What is the vapor pressure of pure liquid B in bar?
Answer» Liquids A and B form ideal solution for all compositions of A and B at $25^{\circ} C$ . Two such solutions with $0.25$ and $0.50$ mole fractions of A have the total vapor pressures of $0.3$ and $0.4$ $b a r$ , respectively. What is the vapor pressure of pure liquid B in $b a r$ ?

Discussion

42.	what is the maximum number of orbital that}can be identified with the following quantum numbers n=3, =1, Ml =0
Answer» what is the maximum number of orbital that}can be identified with the following quantum numbers n=3, =1, Ml =0

Discussion

43.	In a polymer sample 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?(1) 40,300 (2) 30,600 (3) 43,333 (4) 50,400.
Answer» In a polymer sample 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?(1) 40,300 (2) 30,600 (3) 43,333 (4) 50,400.

Discussion

44.	Arrange the following: CH3CH2CH2CH2Cl (I), CH3CH2CHCl−CH3 (II), (CH3)2CHCH2Cl (III) and (CH3)3C−Cl (IV) in order of decreasing tendency towards SN2 reaction
Answer» Arrange the following: $C H_{3} C H_{2} C H_{2} C H_{2} C l$ (I), $C H_{3} C H_{2} C H C l - C H_{3}$ (II), $(C H_{3})_{2} C H C H_{2} C l$ (III) and $(C H_{3})_{3} C - C l$ (IV) in order of decreasing tendency towards $S_{N} 2$ reaction

Discussion

45.	Which among the following will not show chain isomerism:
Answer» Which among the following will not show chain isomerism:

Discussion

46.	What type of point defect are produced when AgCl is doped with CdCl2
Answer» What type of point defect are produced when AgCl is doped with CdCl₂

Discussion

47.	A metal X reacts with oxygen gas to give an amphoteric oxide. Identify the metal X from the below-mentioned options. X + O2 → Oxide of metal X
Answer» A metal X reacts with oxygen gas to give an amphoteric oxide. Identify the metal X from the below-mentioned options. $X + O_{2} \to O x i d e o f m e t a l X$

Discussion

48.	explain aldol condensation and cannizaro reaction
Answer» explain aldol condensation and cannizaro reaction

Discussion

49.	53. Determine the specific rotation of (-)-2-octanol obtained by the reaction of (+)-2-bromooctane (of specific rotation = +24.9^° ) with aqueus sodium hydroxide . Given specific rotation for optically pure (+)-2-bromooctane and (-)-2-octanol have specific rotations of +39.6^° and -10.3^° respectively
Answer» 53. Determine the specific rotation of (-)-2-octanol obtained by the reaction of (+)-2-bromooctane (of specific rotation = +24.9^° ) with aqueus sodium hydroxide . Given specific rotation for optically pure (+)-2-bromooctane and (-)-2-octanol have specific rotations of +39.6^° and -10.3^° respectively

Discussion

50.	99 1 mol N2 and 3 mol H2 are placed in a closed container at a pressure of 4 atm. The pressure falls to 3 atm at the same temperature when the following equillibrium is attained
Answer» 99 1 mol N2 and 3 mol H2 are placed in a closed container at a pressure of 4 atm. The pressure falls to 3 atm at the same temperature when the following equillibrium is attained

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Draw Lewis dot structure of HNO3 and mention Co-ordinate bond wherever required.

2.76 g of silver carbonates on being strongly heated yield a residue weighing.

Determine the amount of ester present under equilibrium when 3 moles of ethyl alcohol react with 1 mole of acetic acid, when equilibium constant of the reaction is given as 4.

Why the Vander Waal's radii of N,O and F do not show the same trend as in case of covalent radii O>F>N

Halogenation of alkanes is [KCET 2002]

the ratio of sigma bomd and pi bond in tetracynoethylene i

The correct thermodynamic conditions for the spontaneous reaction at all temperature is:

Hybridization is determined of a particular carbon atom in the organic compound or of the entire compound

in bohr seriesof lines of hydrogen spectrum , the third line from the red end corresponds to which one of the following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? (a) 3 to 2 (B) 5 to 2 (C)4 to 1 (D)2 to 5 And give reason

Can all anions act as ligands ?

A certain amount of a metal whose equivalent mass is 28 displaces 0.7L of H2 at S.T.P from an acid hence mass of the element is

Of the following, which is the product formed when cyclohexanone undergoes undergoes aldol condensation followed by heating ?

What is meant by Enthalpy?

20ml of 0.2 M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2 . What is concentration of Cl- ion in the solution?

The density of ice at 0 degree centigrade is 0.915g/cc and that of liquid water at 0 degree centigrade is 0.99987 g/cc. The work done for melting 1 mole of ice at 1.00 bar ( assuming work is done only due to expansion) is approximately a) 0.17 J b) 1.7 × 1000 J C)0.000017 J

The compound in which carbon uses only its sp3 hybrid orbitals for bond formation is

Oxidation state of oxygen in ozone

1kg ice at -10^°c is mixed 1kg water at 50^°c.Then find equilibrium temperature and mixture content.

25. Which of the following 0.1 M solution will contain the largest conceentratiion of Hydronium ions ? A NaHCO3 B NH4Cl C HCl D NH3

The molar heat capacity in a process where a diatomic gas does a work of Q/4 when a heat of Q is supplied to it is

38.How many π-bonds present in [Ni(CO)4]?

AB has ZnS type structure. What will be interionic distance between A+ and B- if lattice constant of AB is 200pm?

group.6 A : Acetamide has more polar C-O groupthan in ethyl acetoacetate.R: NH is more electron donating than OC2H,(2007)

CH3CH2CH2Braq. NaOH−−−−−−→(X)Al2O3−−−→Δ(Y)HOCl−−−→(Z) Major product (Z) is:

particles of mass 1kg ,2kg,3kg ,are so placed that their is at origin. find where should a 4 kg mass be placed so that COM of the system comes ( 2,1,3) ?

give the order of bond length O_2, Na_2O_{2, }O_2(PtF_6), KO_{

Aspirin is a:

65. Find the density in g/ml of a 3.6M sulphuric acid solution that is 29%Suphuric acid by mass.

48.What is the oxidation number of metal in TlI3

What are neutrons? Who discovered these particles?

A water treatment plant treating 10 MLD of water requires 20 mg/L of filter Alum Al2(SO4)3.18H20. Water has 6 mg/L of alkalinity as CaCO3 .( Al = 26.97, S = 32, 0 = 16, H = 1, Ca = 40, and C = 12) Total alkalinity requirement (106 mg per day as CaCO3) matching filter alum, shall be

Among methanol and phenol which one shows higher intermolecular hydrogen bondingj and why

urment of 100 A is paRsed through 1.0 of 10.M HCIkolution for 965 80conds, ph of the solution at the end of the 14TheJAMU Med. 2012)(b) 0.20d None of the aboveeperimetit is

What is the significance of 3+ in [Co(CN)6]3+ ? How does it affect the oxidation state of Cobalt ?

According to Moseley, a straight line graph is obtained on plotting

Nitration of salicylic acid

Calculate the mass of a photon with wavelength 3.6˚A.

Liquids A and B form ideal solution for all compositions of A and B at 25∘C. Two such solutions with 0.25 and 0.50 mole fractions of A have the total vapor pressures of 0.3 and 0.4 bar, respectively. What is the vapor pressure of pure liquid B in bar?

what is the maximum number of orbital that}can be identified with the following quantum numbers n=3, =1, Ml =0

In a polymer sample 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?(1) 40,300 (2) 30,600 (3) 43,333 (4) 50,400.

Arrange the following: CH3CH2CH2CH2Cl (I), CH3CH2CHCl−CH3 (II), (CH3)2CHCH2Cl (III) and (CH3)3C−Cl (IV) in order of decreasing tendency towards SN2 reaction

Which among the following will not show chain isomerism:

What type of point defect are produced when AgCl is doped with CdCl2

A metal X reacts with oxygen gas to give an amphoteric oxide. Identify the metal X from the below-mentioned options. X + O2 → Oxide of metal X

explain aldol condensation and cannizaro reaction

99 1 mol N2 and 3 mol H2 are placed in a closed container at a pressure of 4 atm. The pressure falls to 3 atm at the same temperature when the following equillibrium is attained