46295 + Interview Questions in Chemistry

1.	Consider the following bond cleavages Carbon species formed in A, B and C are respectively:
Answer» Consider the following bond cleavages Carbon species formed in A, B and C are respectively:

Discussion

2.	Calculate the difference in the net stabilization energies (in kJmol−1) of Fe2+ octahedral complexes with CN− ligands (Δ0=25000 cm−1) and with H2O ligands (Δ0=10000 cm−1). Given that the pairing energy, Ep=15000 cm−1 for Fe2+ ion in both the complexes. (Given: h = 6×10−34 Jsec, Avogadro's Number = 6×1023, Speed of light =3×108 m sec−1)
Answer» Calculate the difference in the net stabilization energies (in $k J m o l^{- 1})$ of $F e^{2 +}$ octahedral complexes with $C N^{-}$ ligands ( $Δ_{0} = 25000 c m^{- 1})$ and with $H_{2} O$ ligands $(Δ_{0} = 10000 c m^{- 1})$ . Given that the pairing energy, $E_{p} = 15000 c m^{- 1}$ for $F e^{2 +}$ ion in both the complexes. (Given: h = $6 \times 10^{- 34}$ Jsec, Avogadro's Number = $6 \times 10^{23}$ , Speed of light = $3 \times 10^{8} m s e c^{- 1}$ )

Discussion

3.	Which of the following gives ethene more easily when treated with strong base?
Answer» Which of the following gives ethene more easily when treated with strong base?

Discussion

4.	a solution containing 8.6g/l of urea is isotonic with a 5% (w/v) solution of unknown solute .The molar mass of solute will be
Answer» a solution containing 8.6g/l of urea is isotonic with a 5% (w/v) solution of unknown solute .The molar mass of solute will be

Discussion

5.	128.The binding energy of alpha is 7.047 MeV per nucleon and the binding energy of deuteron is 1.112MeV per nucleon. Then in the fusion reaction given, the Q released is
Answer» 128.The binding energy of alpha is 7.047 MeV per nucleon and the binding energy of deuteron is 1.112MeV per nucleon. Then in the fusion reaction given, the Q released is

Discussion

6.	CH2=CH2PhCO3H−−−−−→AH3O⊕−−−→BPI3, Δ−−−−→(2 eqv.)C Structure of C is:
Answer» $C H_{2} = C H_{2} P h C O_{3} H - ---- \to A H_{3} O^{\oplus} - -- \to B P I_{3}, Δ - --- \to (2 e q v .) C$ Structure of C is:

Discussion

7.	One of the rectangular components of force of 40 N is 20N. Find the angle it makes with this component?
Answer» One of the rectangular components of force of 40 N is 20N. Find the angle it makes with this component?

Discussion

8.	4-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:
Answer» 4-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:

Discussion

9.	Can sodium hydroxide be kept in aluminium container? Justify
Answer» Can sodium hydroxide be kept in aluminium container? Justify

Discussion

10.	IUPAC name of [Pt(NH3)3(Br)(NO2)Cl]Cl is
Answer» IUPAC name of $[P t (N H_{3})_{3} (B r) (N O_{2}) C l] C l$ is

Discussion

11.	Calculate the ratio of average k.E of one molecule diatomic(rigid) and diatomic(elastic) at temp.150C.
Answer» Calculate the ratio of average k.E of one molecule diatomic(rigid) and diatomic(elastic) at temp.150C.

Discussion

12.	Salt (A) gives brick red fumes (B) with conc.H2SO4 and K2Cr2O7 which gives yellow solution (C) with NaOH and it gives yellow precipitate (D) with acetic acid and lead acetate. What is the compound (C) ?
Answer» Salt (A) gives brick red fumes (B) with conc. $H_{2} S O_{4} and K_{2} C r_{2} O_{7}$ which gives yellow solution (C) with $N a O H$ and it gives yellow precipitate (D) with acetic acid and lead acetate. What is the compound (C) ?

Discussion

13.	8g = how many gram equivalent
Answer» 8g = how many gram equivalent

Discussion

14.	8.What is the entropy change when one mole of ice is converted into water at 0 degree Celsius? (the entropy change for the conversion of ice to liquid water is 6.0 kJ per mol at zero degree Celsius) 1)20.03kJk-1 mol-1. 2)21.98 kJk-1 mol-1
Answer» 8.What is the entropy change when one mole of ice is converted into water at 0 degree Celsius? (the entropy change for the conversion of ice to liquid water is 6.0 kJ per mol at zero degree Celsius) 1)20.03kJk-1 mol-1. 2)21.98 kJk-1 mol-1

Discussion

15.	ntA carnot's engine uses first an ideal monoatomic gas and then an ideal diatomic gas. If the source andsink temperature are 411 C and 69 C respectively and the engine extracts 1000J of heat in each cycle, then area enclosed by P-V diagram is:n nt1) 100Jn nt2) 300Jn nt3) 500Jn nt4) 700Jn ntn
Answer» ntA carnot's engine uses first an ideal monoatomic gas and then an ideal diatomic gas. If the source andsink temperature are 411 C and 69 C respectively and the engine extracts 1000J of heat in each cycle, then area enclosed by P-V diagram is:n nt1) 100Jn nt2) 300Jn nt3) 500Jn nt4) 700Jn ntn

Discussion

16.	The second order Bragg diffraction of x-rays with λ=1.00 ∘A from a set of parallel planes in metal occurs at an angle 60∘. The distance between the scattering planes in the crystal is
Answer» The second order Bragg diffraction of x-rays with $λ = 1.00 \circ A$ from a set of parallel planes in metal occurs at an angle $60^{\circ}$ . The distance between the scattering planes in the crystal is

Discussion

17.	3.9g of a mixture of Al and Al2O3 is reacted with dilute HCl then 224ml H2 gas is evolved at NTP. Calculate the percentage of All in the mixture
Answer» 3.9g of a mixture of Al and Al2O3 is reacted with dilute HCl then 224ml H2 gas is evolved at NTP. Calculate the percentage of All in the mixture

Discussion

18.	48 CaCO + 2HCl - - - - >CaCl + CO+ HO ; In this chemical reaction what will be the amount of calcium chloride when 10g calcium carbonate and 400 mL 0.25 M HCl is used :- (1) 4.05 g (2) 5.55 g (3) 11.1 g (4) 16.65 g
Answer» 48 CaCO + 2HCl - - - - >CaCl + CO+ HO ; In this chemical reaction what will be the amount of calcium chloride when 10g calcium carbonate and 400 mL 0.25 M HCl is used :- (1) 4.05 g (2) 5.55 g (3) 11.1 g (4) 16.65 g

Discussion

19.	how co2 have 2 unhybrudused p orbital
Answer» how co2 have 2 unhybrudused p orbital

Discussion

20.	A compound formed by elements X, Y, Z . Atoms of Y forms ccp lattice and X occupies half the octahedral voids and Z occupies half the tetrahedral voids. Find the formula of the compound?
Answer» A compound formed by elements X, Y, Z . Atoms of Y forms ccp lattice and X occupies half the octahedral voids and Z occupies half the tetrahedral voids. Find the formula of the compound?

Discussion

21.	The ratio of the number of sp, sp2, sp3 orbitals in the compound is CH3-CH=C=CH-CC-CH3 A)1:1:1 B)2:2:1 C)3:2:1 D)3:3:4
Answer» The ratio of the number of sp, sp2, sp3 orbitals in the compound is CH3-CH=C=CH-CC-CH3 A)1:1:1 B)2:2:1 C)3:2:1 D)3:3:4

Discussion

22.	Conjugate base of H2PO−4 is
Answer» Conjugate base of $H_{2} P O_{4}^{-}$ is

Discussion

23.	A^2x+b^2y=c^2,b^2x+a^2y=d^2Find x and y.
Answer» A^2x+b^2y=c^2,b^2x+a^2y=d^2 Find x and y.

Discussion

24.	What is inert pair effect?
Answer» What is inert pair effect?

Discussion

25.	State order of isomeric effect (+I or -I effect)WITH explanation.1.-CN, -CH=CH2 ,CH3NH22. -O-(CH3)C=O ,-COO-CH3
Answer» State order of isomeric effect (+I or -I effect)WITH explanation. 1.-CN, -CH=CH2 ,CH3NH2 2. -O-(CH3)C=O ,-COO-CH3

Discussion

26.	36. Which of the following is most easily liquefiable? a) SO2 b) He c) NH3 d) HCl
Answer» 36. Which of the following is most easily liquefiable? a) SO2 b) He c) NH3 d) HCl

Discussion

27.	Which of the following reaction does not involve in neither oxidation nor reduction?
Answer» Which of the following reaction does not involve in neither oxidation nor reduction?

Discussion

28.	An object O is moving towards the surface of water 8. with a speed of 2 m/and fish F is moving towards the surface with a speed of 5 m/s. Find the speed of the object O as seen by fish.(1) 6.33 ms1 (2) 7 ms-1 (3) 5.26 ms-1 (4) 4.75 ms-1
Answer» An object O is moving towards the surface of water 8. with a speed of 2 m/and fish F is moving towards the surface with a speed of 5 m/s. Find the speed of the object O as seen by fish.(1) 6.33 ms1 (2) 7 ms-1 (3) 5.26 ms-1 (4) 4.75 ms-1

Discussion

29.	When 1 mole of N2 and 1 mole of H2 is enclosed in 3 L vessel and the reaction is allowed to attain equillibrium ,it is found that at equillibrium there is x number of mole of H2. The number of moles of NH3 formed would be: a. 2x/3 b. 2(1+x)/3 c. 2(1-x)/3 d. (1-x)/
Answer» When 1 mole of N2 and 1 mole of H2 is enclosed in 3 L vessel and the reaction is allowed to attain equillibrium ,it is found that at equillibrium there is x number of mole of H2. The number of moles of NH3 formed would be: a. 2x/3 b. 2(1+x)/3 c. 2(1-x)/3 d. (1-x)/

Discussion

30.	The total number of electrons present in 5.6 L of methane gas at STP is:
Answer» The total number of electrons present in $5.6 L$ of methane gas at STP is:

Discussion

31.	The resonance hybrid of Ozone arises from ________ canonical forms.___
Answer» The resonance hybrid of Ozone arises from ________ canonical forms. ___

Discussion

32.	What is the significance of calculating wave number in hydrogen spectrum?
Answer» What is the significance of calculating wave number in hydrogen spectrum?

Discussion

33.	How come benzen alcohol has 5 resonating structure?
Answer» How come benzen alcohol has 5 resonating structure?

Discussion

34.	Explain how rusting ofiron is envisaged as setting up of an electrochemical cell.
Answer» Explain how rusting of iron is envisaged as setting up of an electrochemical cell.

Discussion

35.	Q.In Have process 30 liter of dihydrogen and 30 liters of dinitrogen we're taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mitrure under the aforesaid condition in the end?
Answer» Q.In Have process 30 liter of dihydrogen and 30 liters of dinitrogen we're taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mitrure under the aforesaid condition in the end?

Discussion

36.	4. An electric dipole conssting of two equal andopposite point charges (q, m) and dipole length- 2l is slightly disturbed (angularly) from itsposition of stable equilibrium.The minimum time during which its gets alignedwith the electric field
Answer» 4. An electric dipole conssting of two equal andopposite point charges (q, m) and dipole length- 2l is slightly disturbed (angularly) from itsposition of stable equilibrium.The minimum time during which its gets alignedwith the electric field

Discussion

37.	3-Phenylpropene on reaction with HBr gives (as a major product)
Answer» 3-Phenylpropene on reaction with HBr gives (as a major product)

Discussion

38.	16. The order of stability of metal oxides is Cr2O3 MgO Al2O3 Fe2O3
Answer» 16. The order of stability of metal oxides is Cr2O3 MgO Al2O3 Fe2O3

Discussion

39.	The choice of areducing agent in a particular case depends onthermodynamic factor.How far do you agree with this statement? Supportyour opinion with twoexamples.
Answer» The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.

39.

The choice of areducing agent in a particular case depends onthermodynamic factor.How far do you agree with this statement? Supportyour opinion with twoexamples.

Answer»

The choice of a
reducing agent in a particular case depends on

thermodynamic factor.
How far do you agree with this statement? Support

your opinion with two
examples.

Discussion

40.	The de Broglie wavelength of a tennis ball of mass 30 g moving with a velocity of 20 m/s is approximately: (Planck's constant, h=6.63×10−34 Js)
Answer» The de Broglie wavelength of a tennis ball of mass 30 g moving with a velocity of $20 m / s$ is approximately: $(Planck's constant, h = 6.63 \times 10^{- 34} J s)$

Discussion

41.	At the equilibrium condition in the process of adsorption ________
Answer» At the equilibrium condition in the process of adsorption ________

Discussion

42.	The value of the reaction quotient 'Q' for the following cell is Y. Cr(s)\|Cr3+(aq)(0.1M)\|\|Cu2+(aq)(0.5M)\|Cu(s) Find the value of Y
Answer» The value of the reaction quotient 'Q' for the following cell is Y. $C r (s) \| C r^{3 +} (a q) (0.1 M) \| \| C u^{2 +} (a q) (0.5 M) \| C u (s)$ Find the value of Y

Discussion

43.	Peptidoglycan cell wall is a characteristic of:
Answer» Peptidoglycan cell wall is a characteristic of:

Discussion

44.	The rates r1,r2 and r3 are in the order:
Answer» The rates $r_{1}, r_{2}$ and $r_{3}$ are in the order:

Discussion

45.	Which among the given molecule does not contain a central atom with expanded octet?(1) PF5(2)SF5
Answer» Which among the given molecule does not contain a central atom with expanded octet? (1) PF5 (2)SF5

Discussion

46.	20g of CaCO3 gives we 10g of CaO and CO2 the percentage purity of CaCO3 is
Answer» 20g of CaCO3 gives we 10g of CaO and CO2 the percentage purity of CaCO3 is

Discussion

47.	If in hydrogen atom, radius of nth Bohr orbit is rn, frequency of revolution of electron in nth orbit is fn and area enclosed by nth orbit An, which of the following graph is/are correct?
Answer» If in hydrogen atom, radius of $n^{t h}$ Bohr orbit is $r_{n},$ frequency of revolution of electron in $n^{t h}$ orbit is $f_{n}$ and area enclosed by $n^{t h}$ orbit $A_{n},$ which of the following graph is/are correct?

Discussion

48.	An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons and (ii) the electronic configuration of the element.
Answer» An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons and (ii) the electronic configuration of the element.

Discussion

49.	Reaction of propene with diborane followed by alkaline hydrolysis in the presence of H2O2 gives
Answer» Reaction of propene with diborane followed by alkaline hydrolysis in the presence of H2O2 gives

Discussion

50.	Givesimple chemical tests to distinguish between the following pairs ofcompounds.(i) Propanaland Propanone (ii) Acetophenoneand Benzophenone(iii) Phenoland Benzoic acid(iv) Benzoicacid and Ethyl benzoate(v) Pentan-2-oneand Pentan-3-one(vi) Benzaldehydeand Acetophenone(vii) Ethanaland Propanal
Answer» Give simple chemical tests to distinguish between the following pairs of compounds. (i) Propanal and Propanone (ii) Acetophenone and Benzophenone (iii) Phenol and Benzoic acid (iv) Benzoic acid and Ethyl benzoate (v) Pentan-2-one and Pentan-3-one (vi) Benzaldehyde and Acetophenone (vii) Ethanal and Propanal

50.

Givesimple chemical tests to distinguish between the following pairs ofcompounds.(i) Propanaland Propanone (ii) Acetophenoneand Benzophenone(iii) Phenoland Benzoic acid(iv) Benzoicacid and Ethyl benzoate(v) Pentan-2-oneand Pentan-3-one(vi) Benzaldehydeand Acetophenone(vii) Ethanaland Propanal

Answer»

Give
simple chemical tests to distinguish between the following pairs of
compounds.

(i) Propanal
and Propanone

(ii) Acetophenone
and Benzophenone

(iii) Phenol
and Benzoic acid

(iv) Benzoic
acid and Ethyl benzoate

(v) Pentan-2-one
and Pentan-3-one

(vi) Benzaldehyde
and Acetophenone

(vii) Ethanal
and Propanal

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Consider the following bond cleavages Carbon species formed in A, B and C are respectively:

Which of the following gives ethene more easily when treated with strong base?

a solution containing 8.6g/l of urea is isotonic with a 5% (w/v) solution of unknown solute .The molar mass of solute will be

128.The binding energy of alpha is 7.047 MeV per nucleon and the binding energy of deuteron is 1.112MeV per nucleon. Then in the fusion reaction given, the Q released is

CH2=CH2PhCO3H−−−−−→AH3O⊕−−−→BPI3, Δ−−−−→(2 eqv.)C Structure of C is:

One of the rectangular components of force of 40 N is 20N. Find the angle it makes with this component?

4-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:

Can sodium hydroxide be kept in aluminium container? Justify

IUPAC name of [Pt(NH3)3(Br)(NO2)Cl]Cl is

Calculate the ratio of average k.E of one molecule diatomic(rigid) and diatomic(elastic) at temp.150C.

Salt (A) gives brick red fumes (B) with conc.H2SO4 and K2Cr2O7 which gives yellow solution (C) with NaOH and it gives yellow precipitate (D) with acetic acid and lead acetate. What is the compound (C) ?

8g = how many gram equivalent

8.What is the entropy change when one mole of ice is converted into water at 0 degree Celsius? (the entropy change for the conversion of ice to liquid water is 6.0 kJ per mol at zero degree Celsius) 1)20.03kJk-1 mol-1. 2)21.98 kJk-1 mol-1

ntA carnot's engine uses first an ideal monoatomic gas and then an ideal diatomic gas. If the source andsink temperature are 411 C and 69 C respectively and the engine extracts 1000J of heat in each cycle, then area enclosed by P-V diagram is:n nt1) 100Jn nt2) 300Jn nt3) 500Jn nt4) 700Jn ntn

The second order Bragg diffraction of x-rays with λ=1.00 ∘A from a set of parallel planes in metal occurs at an angle 60∘. The distance between the scattering planes in the crystal is

3.9g of a mixture of Al and Al2O3 is reacted with dilute HCl then 224ml H2 gas is evolved at NTP. Calculate the percentage of All in the mixture

48 CaCO + 2HCl - - - - >CaCl + CO+ HO ; In this chemical reaction what will be the amount of calcium chloride when 10g calcium carbonate and 400 mL 0.25 M HCl is used :- (1) 4.05 g (2) 5.55 g (3) 11.1 g (4) 16.65 g

how co2 have 2 unhybrudused p orbital

A compound formed by elements X, Y, Z . Atoms of Y forms ccp lattice and X occupies half the octahedral voids and Z occupies half the tetrahedral voids. Find the formula of the compound?

The ratio of the number of sp, sp2, sp3 orbitals in the compound is CH3-CH=C=CH-CC-CH3 A)1:1:1 B)2:2:1 C)3:2:1 D)3:3:4

Conjugate base of H2PO−4 is

A^2x+b^2y=c^2,b^2x+a^2y=d^2Find x and y.

What is inert pair effect?

State order of isomeric effect (+I or -I effect)WITH explanation.1.-CN, -CH=CH2 ,CH3NH22. -O-(CH3)C=O ,-COO-CH3

36. Which of the following is most easily liquefiable? a) SO2 b) He c) NH3 d) HCl

Which of the following reaction does not involve in neither oxidation nor reduction?

An object O is moving towards the surface of water 8. with a speed of 2 m/and fish F is moving towards the surface with a speed of 5 m/s. Find the speed of the object O as seen by fish.(1) 6.33 ms1 (2) 7 ms-1 (3) 5.26 ms-1 (4) 4.75 ms-1

When 1 mole of N2 and 1 mole of H2 is enclosed in 3 L vessel and the reaction is allowed to attain equillibrium ,it is found that at equillibrium there is x number of mole of H2. The number of moles of NH3 formed would be: a. 2x/3 b. 2(1+x)/3 c. 2(1-x)/3 d. (1-x)/

The total number of electrons present in 5.6 L of methane gas at STP is:

The resonance hybrid of Ozone arises from ________ canonical forms.___

What is the significance of calculating wave number in hydrogen spectrum?

How come benzen alcohol has 5 resonating structure?

Explain how rusting ofiron is envisaged as setting up of an electrochemical cell.

Q.In Have process 30 liter of dihydrogen and 30 liters of dinitrogen we're taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mitrure under the aforesaid condition in the end?

4. An electric dipole conssting of two equal andopposite point charges (q, m) and dipole length- 2l is slightly disturbed (angularly) from itsposition of stable equilibrium.The minimum time during which its gets alignedwith the electric field

3-Phenylpropene on reaction with HBr gives (as a major product)

16. The order of stability of metal oxides is Cr2O3 MgO Al2O3 Fe2O3

The choice of areducing agent in a particular case depends onthermodynamic factor.How far do you agree with this statement? Supportyour opinion with twoexamples.

The de Broglie wavelength of a tennis ball of mass 30 g moving with a velocity of 20 m/s is approximately: (Planck's constant, h=6.63×10−34 Js)

At the equilibrium condition in the process of adsorption ________

The value of the reaction quotient 'Q' for the following cell is Y. Cr(s)|Cr3+(aq)(0.1M)||Cu2+(aq)(0.5M)|Cu(s) Find the value of Y

Peptidoglycan cell wall is a characteristic of:

The rates r1,r2 and r3 are in the order:

Which among the given molecule does not contain a central atom with expanded octet?(1) PF5(2)SF5

20g of CaCO3 gives we 10g of CaO and CO2 the percentage purity of CaCO3 is

If in hydrogen atom, radius of nth Bohr orbit is rn, frequency of revolution of electron in nth orbit is fn and area enclosed by nth orbit An, which of the following graph is/are correct?

An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons and (ii) the electronic configuration of the element.

Reaction of propene with diborane followed by alkaline hydrolysis in the presence of H2O2 gives

Givesimple chemical tests to distinguish between the following pairs ofcompounds.(i) Propanaland Propanone (ii) Acetophenoneand Benzophenone(iii) Phenoland Benzoic acid(iv) Benzoicacid and Ethyl benzoate(v) Pentan-2-oneand Pentan-3-one(vi) Benzaldehydeand Acetophenone(vii) Ethanaland Propanal

The resonance hybrid of Ozone arises from ______ canonical forms._