46295 + Interview Questions in Chemistry

1.	What is the bond energy in bond parameters
Answer» What is the bond energy in bond parameters

Discussion

2.	The oxidation state of $Cr$ in CrO5 is
Answer» The oxidation state of $Cr$ in $C r O_{5}$ is

Discussion

3.	How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl ?
Answer» How many moles of lead (II) chloride will be formed from a reaction between $6.5 g$ of $P b O$ and $3.2 g$ of $H C l$ ?

Discussion

4.	What is the structure of propane 1,3 dial
Answer» What is the structure of propane 1,3 dial

Discussion

5.	Normality of 10percent (weight/volume)avetic acid is
Answer» Normality of 10percent (weight/volume)avetic acid is

Discussion

6.	The pH of a 1 M CHCOONA solution in water will be nearly (pk for CH3COOH = 4.74)
Answer» The pH of a 1 M CHCOONA solution in water will be nearly (pk for CH3COOH = 4.74)

Discussion

7.	The solubility of AgCN in a buffer solution of pH=3 is x. The value of x is:[Assume, no cyano complex is formed]Ksp(AgCN)=2.2×10−16 and Ka(HCN)=6.2×10−10
Answer» The solubility of $A g C N$ in a buffer solution of $p H = 3$ is $x .$ The value of $x$ is: [Assume, no cyano complex is formed] $K_{s p} (A g C N) = 2.2 \times 10^{- 16}$ and $K_{a} (H C N) = 6.2 \times 10^{- 10}$

Discussion

8.	30.Calculate the pH of a solution which contains 9.9ml of 1 Mol HCL and 100ml of 0.1 Mol NaOH
Answer» 30.Calculate the pH of a solution which contains 9.9ml of 1 Mol HCL and 100ml of 0.1 Mol NaOH

Discussion

9.	Which of the following equation is correct for calculating the energy of activation, if the rate of reaction is tripled by increasing temperature from T1K to T2K?
Answer» Which of the following equation is correct for calculating the energy of activation, if the rate of reaction is tripled by increasing temperature from $T_{1} K t o T_{2} K ?$

Discussion

10.	Total geometrical, structural and optical isomers of C4H11N will be?(Also give structures)
Answer» Total geometrical, structural and optical isomers of C4H11N will be?(Also give structures)

Discussion

11.	For the rxn N2+3H2->2NH3 if M.M of NH3 is M1 and that of N2 is M2 and their Equivalent wt. are E1 and E2 than E1-E2 is
Answer» For the rxn N2+3H2->2NH3 if M.M of NH3 is M1 and that of N2 is M2 and their Equivalent wt. are E1 and E2 than E1-E2 is

Discussion

12.	In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg pressure. The percentage composition of nitrogen in the compound is ___. (Round to the nearest integer). [Given: Aqueous tension at 287 K = 14 mm of Hg]
Answer» In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg pressure. The percentage composition of nitrogen in the compound is ___. (Round to the nearest integer). [Given: Aqueous tension at 287 K = 14 mm of Hg]

Discussion

13.	Predict the amide substrate for the given Hoffmann bromamide degradartion reaction.
Answer» Predict the amide substrate for the given Hoffmann bromamide degradartion reaction.

Discussion

14.	200 mL of a N10 H2SO4 solution is mixed with 300 mL of a N100 NaOH solution. Calculate the normality of the excess H+/OH− ions in the resulting solution.
Answer» 200 mL of a $\frac{N}{10}$ $H_{2} S O_{4}$ solution is mixed with 300 mL of a $\frac{N}{100}$ $N a O H$ solution. Calculate the normality of the excess $H^{+} / O H^{-}$ ions in the resulting solution.

Discussion

15.	if .2M 100ml HCL SOLUTION IN MIXERED WITH .2M 300ML HCL SOUTION FIND THE MOLARITY OF MIK
Answer» if .2M 100ml HCL SOLUTION IN MIXERED WITH .2M 300ML HCL SOUTION FIND THE MOLARITY OF MIK

Discussion

16.	the most covalent halide is __ and why?a)AlF3 b)AlCl3 c)AlBr3 d) AlI3
Answer» the most covalent halide is __ and why?a)AlF3 b)AlCl3 c)AlBr3 d) AlI3

Discussion

17.	Identify the (D) in the reaction:
Answer» Identify the (D) in the reaction:

Discussion

18.	ntAn alpha particle with kinetic energy 10 MeV is leading towards a stationary tin nucleus of atomic number 50. Calculate the distance is closest approach?n
Answer» ntAn alpha particle with kinetic energy 10 MeV is leading towards a stationary tin nucleus of atomic number 50. Calculate the distance is closest approach?n

Discussion

19.	Which of the following aqueous solution has maximum freezing point .01 M nacl .05 M c2h5oh .005 M mgi2 .01 M mgso4
Answer» Which of the following aqueous solution has maximum freezing point .01 M nacl .05 M c2h5oh .005 M mgi2 .01 M mgso4

19.

Which of the following aqueous solution has maximum freezing point .01 M nacl .05 M c2h5oh .005 M mgi2 .01 M mgso4

Answer»

Which of the following aqueous solution has maximum freezing point

.01 M nacl

.05 M c2h5oh

.005 M mgi2

.01 M mgso4

Discussion

20.	35. A cylinder was filled with gaseous mixtures containing CO and N_2(equal masses). What is the ratio of their partial pressure in cylinder?
Answer» 35. A cylinder was filled with gaseous mixtures containing CO and N_2(equal masses). What is the ratio of their partial pressure in cylinder?

Discussion

21.	If the susceptibility of a metal at saturation is 4500, then what is the permeability of this metal at saturation?
Answer» If the susceptibility of a metal at saturation is 4500, then what is the permeability of this metal at saturation?

Discussion

22.	Values of two principal specific heats of a gas in call/mole K determined by different students are given. Which is most reliable? 1-5,2 2-6,5 3-7,5 4-7,4
Answer» Values of two principal specific heats of a gas in call/mole K determined by different students are given. Which is most reliable? 1-5,2 2-6,5 3-7,5 4-7,4

Discussion

23.	Which among the following is most metallic in nature?
Answer» Which among the following is most metallic in nature?

Discussion

24.	Which of the following is electron deicient (Lewisacid)?(1) СаCl2,(2) BF3(3) AI2CI6(4) CCI4
Answer» Which of the following is electron deicient (Lewisacid)?(1) СаCl2,(2) BF3(3) AI2CI6(4) CCI4

Discussion

25.	(i) Derive an expression for drift velocity of free electrons. (ii) How does the drift velocity of electrons in a metallic conductor vary with an increase in temperature ? Explain.
Answer» (i) Derive an expression for drift velocity of free electrons. (ii) How does the drift velocity of electrons in a metallic conductor vary with an increase in temperature ? Explain.

Discussion

26.	How to learn valency easily?
Answer» How to learn valency easily?

Discussion

27.	What is formation constand ??
Answer» What is formation constand ??

Discussion

28.	The dipole moment of NaCl molecule is 9 D and its bond length is 2.5 ∘A. The percentage ionic character in this molecule will be
Answer» The dipole moment of $N a C l$ molecule is $9 D$ and its bond length is $2.5 \circ A$ . The percentage ionic character in this molecule will be

Discussion

29.	Those elements impart colour to the flame on heating in it, the atoms of which require the low energy of the ionization (i.e., absorb energy in group visible region of the spectrum). The elements of which of the following groups will impart colour to the flame? (a) 2 (b) 13 (c) 1 (d) 17
Answer» Those elements impart colour to the flame on heating in it, the atoms of which require the low energy of the ionization (i.e., absorb energy in group visible region of the spectrum). The elements of which of the following groups will impart colour to the flame? (a) 2 (b) 13 (c) 1 (d) 17

Discussion

30.	60 which of the following is not a -acid ligand 1)CO 2)F- 3)C2H4 4)NO+
Answer» 60 which of the following is not a -acid ligand 1)CO 2)F- 3)C2H4 4)NO+

Discussion

31.	28. Arrange according the increasing order of basisity CH3COO- ,CH3O-, NH3, CH3CONH2
Answer» 28. Arrange according the increasing order of basisity CH3COO- ,CH3O-, NH3, CH3CONH2

Discussion

32.	The number of atoms in 0.1 mol of a tetraatomic gas is
Answer» The number of atoms in 0.1 mol of a tetraatomic gas is

Discussion

33.	In covalent bond, centre atoms try to remain in maximum covalency. What does this line mean?
Answer» In covalent bond, centre atoms try to remain in maximum covalency. What does this line mean?

Discussion

34.	How many pi bonds does benzyne have?
Answer» How many pi bonds does benzyne have?

Discussion

35.	acetyl chloride on reduction with the( prod) lialh4 product formed i
Answer» acetyl chloride on reduction with the( prod) lialh4 product formed i

Discussion

36.	Écoutez et cochez ce que vous entendez.Prénom : (a)Camille (b) MorinNom : (a) Morron (b) MorinÂge : (a) 9 ans (b) 19 ansProfession : (a) étudiante (b) professeurVille : (a)Marseille (b) ParisLangues parlées : (a) anglais et français (b) français et allemand
Answer» Écoutez et cochez ce que vous entendez. Prénom : (a)Camille (b) Morin Nom : (a) Morron (b) Morin Âge : (a) 9 ans (b) 19 ans Profession : (a) étudiante (b) professeur Ville : (a)Marseille (b) Paris Langues parlées : (a) anglais et français (b) français et allemand

36.

Écoutez et cochez ce que vous entendez.Prénom : (a)Camille (b) MorinNom : (a) Morron (b) MorinÂge : (a) 9 ans (b) 19 ansProfession : (a) étudiante (b) professeurVille : (a)Marseille (b) ParisLangues parlées : (a) anglais et français (b) français et allemand

Answer» Écoutez et cochez ce que vous entendez.

Prénom : (a)Camille (b) Morin

Nom : (a) Morron (b) Morin

Âge : (a) 9 ans (b) 19 ans

Profession : (a) étudiante (b) professeur

Ville : (a)Marseille (b) Paris

Langues parlées : (a) anglais et français (b) français et allemand

Discussion

37.	Which hydride is commercially known as hydrolith ?
Answer» Which hydride is commercially known as hydrolith ?

Discussion

38.	13.6 eV is needed for ionisation of a hydrogen atom. An electron in a hydrogen atom in its ground state absorbs 1.50 times as much energy as the minimum energy required for it to escape from the atom. If the wavelength of emitted electron is x oA, find the nearest integer value of x (me=9.1×10−31 kg, h=6.626×10−34 Js)
Answer» $13.6 e V$ is needed for ionisation of a hydrogen atom. An electron in a hydrogen atom in its ground state absorbs 1.50 times as much energy as the minimum energy required for it to escape from the atom. If the wavelength of emitted electron is $x o A$ , find the nearest integer value of x $(m_{e} = 9.1 \times 10^{- 31} k g, h = 6.626 \times 10^{- 34} J s)$

Discussion

39.	Which of the following transitions involves maximum amount of energy change?
Answer» Which of the following transitions involves maximum amount of energy change?

Discussion

40.	A sample of pure PCl5 was introduced into an evacuated vessel at 473 K. After equilibrium was attained, concentration of PCl5 was found to be 0.5 × 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are the concentrations of PCl3 and Cl2 at equilibrium?
Answer» A sample of pure PCl₅ was introduced into an evacuated vessel at 473 K. After equilibrium was attained, concentration of PCl₅ was found to be 0.5 × 10^–1 mol L^–1. If value of K_c is 8.3 × 10^–3, what are the concentrations of PCl₃ and Cl₂ at equilibrium?

40.

A sample of pure PCl5 was introduced into an evacuated vessel at 473 K. After equilibrium was attained, concentration of PCl5 was found to be 0.5 × 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are the concentrations of PCl3 and Cl2 at equilibrium?

Answer»

A sample of pure PCl₅ was introduced into an evacuated vessel at 473 K. After equilibrium was attained, concentration of PCl₅ was found to be 0.5 × 10^–1 mol L^–1. If value of K_c is 8.3 × 10^–3, what are the concentrations of PCl₃ and Cl₂ at equilibrium?

Discussion

41.	max. no. of electron that can be assosiated by n=3,l=1 and m=-1
Answer» max. no. of electron that can be assosiated by n=3,l=1 and m=-1

Discussion

42.	18. Liquid benzene (C6H6)burns in oxygen according to 2C6H6(I)+15O2---->12CO2 (g)+6H2O (g) How many litres of O2 at STP are needed to complete of 39g of liquid benzene?
Answer» 18. Liquid benzene (C6H6)burns in oxygen according to 2C6H6(I)+15O2---->12CO2 (g)+6H2O (g) How many litres of O2 at STP are needed to complete of 39g of liquid benzene?

Discussion

43.	The pH of an aqueous solution at 25∘C having 0.1 M NaOH and 0.3 M to acetic acid (pKa = 4.76) would be nearly
Answer» The pH of an aqueous solution at $25^{\circ} C$ having 0.1 M NaOH and 0.3 M to acetic acid ( $p K_{a}$ = 4.76) would be nearly

Discussion

44.	The mass of CaO that would be obtained by heating 20 kg of 90% pure lime stone is:
Answer» The mass of CaO that would be obtained by heating 20 kg of $90 %$ pure lime stone is:

Discussion

45.	48 Reaction A+ B= C+ D follows rate law r=k[A][B]starting with 1 M of A and B each. What is the time taken for concentration of A become 0.1 M? Given k= 2.30310- sec-
Answer» 48 Reaction A+ B= C+ D follows rate law r=k[A][B]starting with 1 M of A and B each. What is the time taken for concentration of A become 0.1 M? Given k= 2.30310- sec-

Discussion

46.	What happens when the following substrate undergoes Cannizaro reaction?
Answer» What happens when the following substrate undergoes Cannizaro reaction?

Discussion

47.	total acyclic isomer of C4H7C
Answer» total acyclic isomer of C4H7C

Discussion

48.	A 8.3 L cylinder contains 128.0 g of O2 gas at 27∘C. What mass of O2 gas must be released to reduce the pressure to 6.0 bar?
Answer» A $8.3 L$ cylinder contains $128.0 g$ of $O_{2}$ gas at $27^{\circ} C$ . What mass of $O_{2}$ gas must be released to reduce the pressure to 6.0 bar?

Discussion

49.	The olefin which on ozonolysis gives CH3CH2CHO and CH3CHO is:
Answer» The olefin which on ozonolysis gives $C H_{3} C H_{2} C H O and C H_{3} C H O$ is:

Discussion

50.	X molal solution of benzene is mole fraction equal to 0.4 .Find x.
Answer» X molal solution of benzene is mole fraction equal to 0.4 . Find x.

Discussion

2.	The oxidation state of \(Cr\) in CrO5 is
Answer» The oxidation state of \(Cr\) in $C r O_{5}$ is

Explore topic-wise InterviewSolutions in Current Affairs.

What is the bond energy in bond parameters

The oxidation state of \(Cr\) in CrO5 is

How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl ?

What is the structure of propane 1,3 dial

Normality of 10percent (weight/volume)avetic acid is

The pH of a 1 M CHCOONA solution in water will be nearly (pk for CH3COOH = 4.74)

The solubility of AgCN in a buffer solution of pH=3 is x. The value of x is:[Assume, no cyano complex is formed]Ksp(AgCN)=2.2×10−16 and Ka(HCN)=6.2×10−10

30.Calculate the pH of a solution which contains 9.9ml of 1 Mol HCL and 100ml of 0.1 Mol NaOH

Which of the following equation is correct for calculating the energy of activation, if the rate of reaction is tripled by increasing temperature from T1K to T2K?

Total geometrical, structural and optical isomers of C4H11N will be?(Also give structures)

For the rxn N2+3H2->2NH3 if M.M of NH3 is M1 and that of N2 is M2 and their Equivalent wt. are E1 and E2 than E1-E2 is

In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg pressure. The percentage composition of nitrogen in the compound is ___. (Round to the nearest integer). [Given: Aqueous tension at 287 K = 14 mm of Hg]

Predict the amide substrate for the given Hoffmann bromamide degradartion reaction.

200 mL of a N10 H2SO4 solution is mixed with 300 mL of a N100 NaOH solution. Calculate the normality of the excess H+/OH− ions in the resulting solution.

if .2M 100ml HCL SOLUTION IN MIXERED WITH .2M 300ML HCL SOUTION FIND THE MOLARITY OF MIK

the most covalent halide is __ and why?a)AlF3 b)AlCl3 c)AlBr3 d) AlI3

Identify the (D) in the reaction:

ntAn alpha particle with kinetic energy 10 MeV is leading towards a stationary tin nucleus of atomic number 50. Calculate the distance is closest approach?n

Which of the following aqueous solution has maximum freezing point .01 M nacl .05 M c2h5oh .005 M mgi2 .01 M mgso4

35. A cylinder was filled with gaseous mixtures containing CO and N_2(equal masses). What is the ratio of their partial pressure in cylinder?

If the susceptibility of a metal at saturation is 4500, then what is the permeability of this metal at saturation?

Values of two principal specific heats of a gas in call/mole K determined by different students are given. Which is most reliable? 1-5,2 2-6,5 3-7,5 4-7,4

Which among the following is most metallic in nature?

Which of the following is electron deicient (Lewisacid)?(1) СаCl2,(2) BF3(3) AI2CI6(4) CCI4

(i) Derive an expression for drift velocity of free electrons. (ii) How does the drift velocity of electrons in a metallic conductor vary with an increase in temperature ? Explain.

How to learn valency easily?

What is formation constand ??

The dipole moment of NaCl molecule is 9 D and its bond length is 2.5 ∘A. The percentage ionic character in this molecule will be

Those elements impart colour to the flame on heating in it, the atoms of which require the low energy of the ionization (i.e., absorb energy in group visible region of the spectrum). The elements of which of the following groups will impart colour to the flame? (a) 2 (b) 13 (c) 1 (d) 17

60 which of the following is not a -acid ligand 1)CO 2)F- 3)C2H4 4)NO+

28. Arrange according the increasing order of basisity CH3COO- ,CH3O-, NH3, CH3CONH2

The number of atoms in 0.1 mol of a tetraatomic gas is

In covalent bond, centre atoms try to remain in maximum covalency. What does this line mean?

How many pi bonds does benzyne have?

acetyl chloride on reduction with the( prod) lialh4 product formed i

Écoutez et cochez ce que vous entendez.Prénom : (a)Camille (b) MorinNom : (a) Morron (b) MorinÂge : (a) 9 ans (b) 19 ansProfession : (a) étudiante (b) professeurVille : (a)Marseille (b) ParisLangues parlées : (a) anglais et français (b) français et allemand

Which hydride is commercially known as hydrolith ?

Which of the following transitions involves maximum amount of energy change?

A sample of pure PCl5 was introduced into an evacuated vessel at 473 K. After equilibrium was attained, concentration of PCl5 was found to be 0.5 × 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are the concentrations of PCl3 and Cl2 at equilibrium?

max. no. of electron that can be assosiated by n=3,l=1 and m=-1

18. Liquid benzene (C6H6)burns in oxygen according to 2C6H6(I)+15O2---->12CO2 (g)+6H2O (g) How many litres of O2 at STP are needed to complete of 39g of liquid benzene?

The pH of an aqueous solution at 25∘C having 0.1 M NaOH and 0.3 M to acetic acid (pKa = 4.76) would be nearly

The mass of CaO that would be obtained by heating 20 kg of 90% pure lime stone is:

48 Reaction A+ B= C+ D follows rate law r=k[A][B]starting with 1 M of A and B each. What is the time taken for concentration of A become 0.1 M? Given k= 2.30310- sec-

What happens when the following substrate undergoes Cannizaro reaction?

total acyclic isomer of C4H7C

A 8.3 L cylinder contains 128.0 g of O2 gas at 27∘C. What mass of O2 gas must be released to reduce the pressure to 6.0 bar?

The olefin which on ozonolysis gives CH3CH2CHO and CH3CHO is:

X molal solution of benzene is mole fraction equal to 0.4 .Find x.