46295 + Interview Questions in Chemistry

1.	which of the following requires maximum ionisation energy ? a)O^- b)S^{- }c)Se^- d)Te^-
Answer» which of the following requires maximum ionisation energy ? a)O^- b)S^{- }c)Se^- d)Te^-

Discussion

2.	Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behavior?
Answer» Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behavior?

Discussion

3.	Which one of the following group represent 2-D silicate?
Answer» Which one of the following group represent 2-D silicate?

Discussion

4.	34. Why %w/v is greater than %w/w and how came this formula
Answer» 34. Why %w/v is greater than %w/w and how came this formula

Discussion

5.	Will CCl4 give white precipitate of AgCl on heating it with silver nitrate? Give reason for your answer.
Answer» Will $C C l_{4}$ give white precipitate of AgCl on heating it with silver nitrate? Give reason for your answer.

Discussion

6.	Heat of Neutralisation of strong Acid and strong base is −57 KJ. The amount of heat released when 0.5 mole of HNO3 solution is added to 0.2 mole of NaOH solution is
Answer» Heat of Neutralisation of strong Acid and strong base is $- 57 K J$ . The amount of heat released when $0.5 m o l e$ of $H N O_{3}$ solution is added to $0.2 m o l e$ of $N a O H$ solution is

Discussion

7.	29. If the perimeter of a semicircular protector of nitesh is 36 cm find its diameter
Answer» 29. If the perimeter of a semicircular protector of nitesh is 36 cm find its diameter

Discussion

8.	impor†an t reactions and charcteristics of the use of DMF and THF and Ts in organic chemistry. also explain the function of these two catalyst.
Answer» impor†an t reactions and charcteristics of the use of DMF and THF and Ts in organic chemistry. also explain the function of these two catalyst.

Discussion

9.	A hydrocarbon has 75% carbon. What is the amount of CO2 and water on 0.8 g C of complete combustion?
Answer» A hydrocarbon has 75% carbon. What is the amount of CO2 and water on 0.8 g C of complete combustion?

Discussion

10.	Which of the following equation depicts the oxidizing nature of H2O2?
Answer» Which of the following equation depicts the oxidizing nature of $H_{2} O_{2}$ ?

Discussion

11.	Schiff bases are condensation products of and carbonyls compounds.
Answer» Schiff bases are condensation products of and carbonyls compounds.

Discussion

12.	IE1 and IE2 of Mg are 178 and 348 kcal respectively. The energy required (in kcal) for the following reaction is: Mg→Mg2++2e− (Where IE = ionization energy)
Answer» $I E_{1}$ and $I E_{2}$ of $M g$ are $178$ and $348 kcal$ respectively. The energy required (in kcal) for the following reaction is: $M g \to M g^{2 +} + 2 e^{-}$ (Where $I E$ = ionization energy)

Discussion

13.	When a solid melts there is (1) No increase in enthalpy (2) Increase in enthalpy (3) Decrease in enthalpy (4) Anything can happe
Answer» When a solid melts there is (1) No increase in enthalpy (2) Increase in enthalpy (3) Decrease in enthalpy (4) Anything can happe

Discussion

14.	The compound which undergoes SN1 reaction most rapidly is:
Answer» The compound which undergoes $S_{N} 1$ reaction most rapidly is:

Discussion

15.	What is the oxidation no. of sulphur in K2S208?
Answer» What is the oxidation no. of sulphur in K2S208?

Discussion

16.	6. which is the weakest base? a) C6H5CH2NH2 b) C6H5CH2NHCH3 c) O2NCH2NH2 d) CH3NHCHO
Answer» 6. which is the weakest base? a) C6H5CH2NH2 b) C6H5CH2NHCH3 c) O2NCH2NH2 d) CH3NHCHO

Discussion

17.	18. Dipole moment ofHCL=1.03D,HI=0.38DHCL=1.03D,HI=0.38D. Bond length ofHCL=1.3AHCL=1.3AandHI=1.6AHI=1.6A. The ratio of fraction of an electric charge,δ δ , existing on each atom in HCl and HI is : (1)1.2:1(3)3.3:1(2)2.7:1(4)1:3.3
Answer» 18. Dipole moment ofHCL=1.03D,HI=0.38DHCL=1.03D,HI=0.38D. Bond length ofHCL=1.3AHCL=1.3AandHI=1.6AHI=1.6A. The ratio of fraction of an electric charge,δ δ , existing on each atom in HCl and HI is : (1)1.2:1(3)3.3:1(2)2.7:1(4)1:3.3

Discussion

18.	57 All the collision among reactant molecules are not effective to bring change.-EXPLAIN
Answer» 57 All the collision among reactant molecules are not effective to bring change.-EXPLAIN

Discussion

19.	Heat of neutralization of NaOH and Hcl is -57.46kJ/eq the heat of ionization of water in kJ is
Answer» Heat of neutralization of NaOH and Hcl is -57.46kJ/eq the heat of ionization of water in kJ is

Discussion

20.	Final product in the following sequence of reaction is:
Answer» Final product in the following sequence of reaction is:

Discussion

21.	75 Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b). compound (b) is reacted with HBr to give (c) which is isomer of (a).when (a) is reacted with sodium metal it's gives compou(d), C8H18 which is different from compound formed when n-butyl bromide is reacted with sodium. Give the structure formula of (a) and write the equation for all reaction?
Answer» 75 Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b). compound (b) is reacted with HBr to give (c) which is isomer of (a).when (a) is reacted with sodium metal it's gives compou(d), C8H18 which is different from compound formed when n-butyl bromide is reacted with sodium. Give the structure formula of (a) and write the equation for all reaction?

Discussion

22.	30. In a unit cell, atoms , a, b, , c, d are present at half of of total corners , all facecenters, Body centres,and one third of all edge centres respectively. Then formula of the unit cell is.
Answer» 30. In a unit cell, atoms , a, b, , c, d are present at half of of total corners , all facecenters, Body centres,and one third of all edge centres respectively. Then formula of the unit cell is.

Discussion

23.	The major product formed in the above reaction is :
Answer» The major product formed in the above reaction is :

Discussion

24.	The number of orbitals associated with quantum numbers n=5, ms=+12 is:
Answer» The number of orbitals associated with quantum numbers $n = 5, m_{s} = + \frac{1}{2}$ is:

Discussion

25.	The general electronic configuration of transition elements is
Answer» The general electronic configuration of transition elements is

Discussion

26.	59 Arrange the increase in acidity of the following compounds and explain the reason behind it . Phenol, ortho-nitrophenol, ortho -chresol
Answer» 59 Arrange the increase in acidity of the following compounds and explain the reason behind it . Phenol, ortho-nitrophenol, ortho -chresol

Discussion

27.	When a light of wavelength ′λ′ falls on the surface of a metal with threshold wavelength ′λ′0, an electron of mass '2m' is emitted. The de Broglie wavelength of emitted electron is:
Answer» When a light of wavelength $^{'} λ^{'}$ falls on the surface of a metal with threshold wavelength $^{'} λ_{0}^{'}$ , an electron of mass '2m' is emitted. The de Broglie wavelength of emitted electron is:

Discussion

28.	find the number of geometrical isomers including enantiomers of \lbrack M{(en)}_2ox\rbrack where M is central metal atom.
Answer» find the number of geometrical isomers including enantiomers of \lbrack M{(en)}_2ox\rbrack where M is central metal atom.

Discussion

29.	What is Oxidation number?What are fixed oxidation number of element?
Answer» What is Oxidation number?What are fixed oxidation number of element?

Discussion

30.	What is quantization or quantum no.
Answer» What is quantization or quantum no.

Discussion

31.	A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of asemicircle. The electric field at the centre of curvature of semicircle is
Answer» A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of a semicircle. The electric field at the centre of curvature of semicircle is

Discussion

32.	Which of the following solutions will have pH close to 1?
Answer» Which of the following solutions will have pH close to 1?

Discussion

33.	The product obtained from the following reaction is CH≡CHH2O/HgSO4H2SO4
Answer» The product obtained from the following reaction is $C H \equiv C H \frac{H_{2} O / H g S O_{4}}{H_{2} S O_{4}}$

Discussion

34.	what is the oxidation state of carbon in cac_2 , Mg_2C_3 , Be_2C and Al_4C_3 explain with the help of structure
Answer» what is the oxidation state of carbon in cac_2 , Mg_2C_3 , Be_2C and Al_4C_3 explain with the help of structure

Discussion

35.	The number of moles of CO molecule formed during combustion reaction of Benzene
Answer» The number of moles of CO molecule formed during combustion reaction of Benzene

Discussion

36.	What is the significance of initial rate method over other methods to determine the rate of reactio
Answer» What is the significance of initial rate method over other methods to determine the rate of reactio

Discussion

37.	Want to know more about limiting reagent
Answer» Want to know more about limiting reagent

Discussion

38.	if the anions (X) form hexagonal closed packong and cations (Y) occupy 3/8 of Ov thn the formula of the compound will be??
Answer» if the anions (X) form hexagonal closed packong and cations (Y) occupy 3/8 of Ov thn the formula of the compound will be??

Discussion

39.	Wilkinson’s catalyst is used for
Answer» Wilkinson’s catalyst is used for

Discussion

40.	in a face centred cubic unit cell the fraction of total volume occupied by the atom i
Answer» in a face centred cubic unit cell the fraction of total volume occupied by the atom i

Discussion

41.	How to count MSD and VCS as well as least count and actual reading?
Answer» How to count MSD and VCS as well as least count and actual reading?

Discussion

42.	Electron deficient molecular hydride is:
Answer» Electron deficient molecular hydride is:

Discussion

43.	20.how does SO42- have coordinate bond?
Answer» 20.how does SO42- have coordinate bond?

Discussion

44.	0.06% (w/v)aqueous solution of urea is isotonic with:
Answer» $0.06 %$ (w/v)aqueous solution of urea is isotonic with:

Discussion

45.	Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place.At 298 K:ΔfH∘(SnO2(s))=−581.0 kJmol−1,ΔfH∘(CO2(g))=−394.0 kJmol−1S∘(SnO2(s))=56.0JK−1mol−1,S∘(Sn(s))=52.0JK−1mol−1,S∘(C(s))=6.0JK−1mol−1,S∘(CO2(g))=210.0JK−1mol−1Assume that the enthalpies and the entropies are temperature independent.
Answer» Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place. At $298 K$ : $Δ_{f} H^{\circ} (S n O_{2} (s)) = - 581.0 k J m o l^{- 1}, Δ_{f} H^{\circ} (C O_{2} (g)) = - 394.0 k J m o l^{- 1}$ $S^{\circ} (S n O_{2} (s)) = 56.0 J K^{- 1} m o l^{- 1}, S^{\circ} (S n (s)) = 52.0 J K^{- 1} m o l^{- 1}, S^{\circ} (C (s)) = 6.0 J K^{- 1} m o l^{- 1}, S^{\circ} (C O_{2} (g)) = 210.0 J K^{- 1} m o l^{- 1}$ Assume that the enthalpies and the entropies are temperature independent.

45.

Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place.At 298 K:ΔfH∘(SnO2(s))=−581.0 kJmol−1,ΔfH∘(CO2(g))=−394.0 kJmol−1S∘(SnO2(s))=56.0JK−1mol−1,S∘(Sn(s))=52.0JK−1mol−1,S∘(C(s))=6.0JK−1mol−1,S∘(CO2(g))=210.0JK−1mol−1Assume that the enthalpies and the entropies are temperature independent.

Answer»

Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place.

At $298 K$ : $Δ_{f} H^{\circ} (S n O_{2} (s)) = - 581.0 k J m o l^{- 1}, Δ_{f} H^{\circ} (C O_{2} (g)) = - 394.0 k J m o l^{- 1}$

$S^{\circ} (S n O_{2} (s)) = 56.0 J K^{- 1} m o l^{- 1}, S^{\circ} (S n (s)) = 52.0 J K^{- 1} m o l^{- 1}, S^{\circ} (C (s)) = 6.0 J K^{- 1} m o l^{- 1}, S^{\circ} (C O_{2} (g)) = 210.0 J K^{- 1} m o l^{- 1}$

Assume that the enthalpies and the entropies are temperature independent.

Discussion

46.	An electromagnetic wave of frequency 3 GHz enters a dielectric medium of relative electric permittivity 2.25 from vacuum. The wavelength of this wave in that medium will be ×10−2 cm.
Answer» An electromagnetic wave of frequency $3 GHz$ enters a dielectric medium of relative electric permittivity $2.25$ from vacuum. The wavelength of this wave in that medium will be $\times 10^{- 2} cm$ .

Discussion

47.	p-Cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is
Answer» p-Cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

Discussion

48.	The colour of light absorbed by an aqueous solution of CuSO4 is
Answer» The colour of light absorbed by an aqueous solution of $C u S O_{4}$ is

Discussion

49.	Ina first order reaction the concentration of reactant decrease from 800 mol/dm3to 50 mo/dm3 in 2×104sec. The rate constant of reaction in sec-1 is:
Answer» In a first order reaction the concentration of reactant decrease from 800 mol/dm³ to 50 mo/dm³ in 2×10⁴ sec. The rate constant of reaction in sec^-1 is:

Discussion

50.	In the above monobromination reaction, the number of possible chiral product(s) is/are:
Answer» In the above monobromination reaction, the number of possible chiral product(s) is/are:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

which of the following requires maximum ionisation energy ? a)O^- b)S^{- }c)Se^- d)Te^-

Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behavior?

Which one of the following group represent 2-D silicate?

34. Why %w/v is greater than %w/w and how came this formula

Will CCl4 give white precipitate of AgCl on heating it with silver nitrate? Give reason for your answer.

Heat of Neutralisation of strong Acid and strong base is −57 KJ. The amount of heat released when 0.5 mole of HNO3 solution is added to 0.2 mole of NaOH solution is

29. If the perimeter of a semicircular protector of nitesh is 36 cm find its diameter

impor†an t reactions and charcteristics of the use of DMF and THF and Ts in organic chemistry. also explain the function of these two catalyst.

A hydrocarbon has 75% carbon. What is the amount of CO2 and water on 0.8 g C of complete combustion?

Which of the following equation depicts the oxidizing nature of H2O2?

Schiff bases are condensation products of and carbonyls compounds.

IE1 and IE2 of Mg are 178 and 348 kcal respectively. The energy required (in kcal) for the following reaction is: Mg→Mg2++2e− (Where IE = ionization energy)

When a solid melts there is (1) No increase in enthalpy (2) Increase in enthalpy (3) Decrease in enthalpy (4) Anything can happe

The compound which undergoes SN1 reaction most rapidly is:

What is the oxidation no. of sulphur in K2S208?

6. which is the weakest base? a) C6H5CH2NH2 b) C6H5CH2NHCH3 c) O2NCH2NH2 d) CH3NHCHO

18. Dipole moment ofHCL=1.03D,HI=0.38DHCL=1.03D,HI=0.38D. Bond length ofHCL=1.3AHCL=1.3AandHI=1.6AHI=1.6A. The ratio of fraction of an electric charge,δ δ , existing on each atom in HCl and HI is : (1)1.2:1(3)3.3:1(2)2.7:1(4)1:3.3

57 All the collision among reactant molecules are not effective to bring change.-EXPLAIN

Heat of neutralization of NaOH and Hcl is -57.46kJ/eq the heat of ionization of water in kJ is

Final product in the following sequence of reaction is:

30. In a unit cell, atoms , a, b, , c, d are present at half of of total corners , all facecenters, Body centres,and one third of all edge centres respectively. Then formula of the unit cell is.

The major product formed in the above reaction is :

The number of orbitals associated with quantum numbers n=5, ms=+12 is:

The general electronic configuration of transition elements is

59 Arrange the increase in acidity of the following compounds and explain the reason behind it . Phenol, ortho-nitrophenol, ortho -chresol

When a light of wavelength ′λ′ falls on the surface of a metal with threshold wavelength ′λ′0, an electron of mass '2m' is emitted. The de Broglie wavelength of emitted electron is:

find the number of geometrical isomers including enantiomers of \lbrack M{(en)}_2ox\rbrack where M is central metal atom.

What is Oxidation number?What are fixed oxidation number of element?

What is quantization or quantum no.

A rod of length L has a total charge Q distributed uniformly along its length. It is bent in the shape of asemicircle. The electric field at the centre of curvature of semicircle is

Which of the following solutions will have pH close to 1?

The product obtained from the following reaction is CH≡CHH2O/HgSO4H2SO4

what is the oxidation state of carbon in cac_2 , Mg_2C_3 , Be_2C and Al_4C_3 explain with the help of structure

The number of moles of CO molecule formed during combustion reaction of Benzene

What is the significance of initial rate method over other methods to determine the rate of reactio

Want to know more about limiting reagent

if the anions (X) form hexagonal closed packong and cations (Y) occupy 3/8 of Ov thn the formula of the compound will be??

Wilkinson’s catalyst is used for

in a face centred cubic unit cell the fraction of total volume occupied by the atom i

How to count MSD and VCS as well as least count and actual reading?

Electron deficient molecular hydride is:

20.how does SO42- have coordinate bond?

0.06% (w/v)aqueous solution of urea is isotonic with:

An electromagnetic wave of frequency 3 GHz enters a dielectric medium of relative electric permittivity 2.25 from vacuum. The wavelength of this wave in that medium will be ×10−2 cm.

p-Cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

The colour of light absorbed by an aqueous solution of CuSO4 is

Ina first order reaction the concentration of reactant decrease from 800 mol/dm3to 50 mo/dm3 in 2×104sec. The rate constant of reaction in sec-1 is:

In the above monobromination reaction, the number of possible chiral product(s) is/are: