46295 + Interview Questions in Chemistry

1.	Ni^{2+ }can be estimated by used dmg and forms a Rosy red ppt. the complex is extra stabilised by which bonds ?
Answer» Ni^{2+ }can be estimated by used dmg and forms a Rosy red ppt. the complex is extra stabilised by which bonds ?

Discussion

2.	In an isochoric process, ΔH for a system equals to:
Answer» In an isochoric process, $Δ H$ for a system equals to:

Discussion

3.	If the no of H atoms in P is x, no of π electrons is y and no of lone pair electrons is z then value of x+y+z is
Answer» If the no of H atoms in P is x, no of $π$ electrons is y and no of lone pair electrons is z then value of x+y+z is

Discussion

4.	What are leptons , mesons , bosons
Answer» What are leptons , mesons , bosons

Discussion

5.	18. 10g of MnO2 on reaction with HCL forms 2.24L of chlorine gas at NTP, the percentage impurity of MnO2 is 1) 87% 2) 25% 3) 33.3% 4) 13%
Answer» 18. 10g of MnO2 on reaction with HCL forms 2.24L of chlorine gas at NTP, the percentage impurity of MnO2 is 1) 87% 2) 25% 3) 33.3% 4) 13%

Discussion

6.	46. Cyclohexene reacts with br2 and ccl4 and gives a product, the formation of product involves A. SN1 B. SN2 C. E1 D. None of the above
Answer» 46. Cyclohexene reacts with br2 and ccl4 and gives a product, the formation of product involves A. SN1 B. SN2 C. E1 D. None of the above

Discussion

7.	When SO, is passed in acidified K,Cr,O, solution oxidation state of S changed from2(1) +4 to 0(2) +4 to +2(3) +4 to +6(4) +6 to +4
Answer» When SO, is passed in acidified K,Cr,O, solution oxidation state of S changed from2(1) +4 to 0(2) +4 to +2(3) +4 to +6(4) +6 to +4

Discussion

8.	Consider the following reaction and indentify (P).
Answer» Consider the following reaction and indentify (P).

Discussion

9.	How to balance a chemical equatio
Answer» How to balance a chemical equatio

Discussion

10.	The de Broglie wavelength of a Neutron at 27 degree centigrade is Lambda what will be the wavelength at 927 degree centigrade
Answer» The de Broglie wavelength of a Neutron at 27 degree centigrade is Lambda what will be the wavelength at 927 degree centigrade

Discussion

11.	A compound X on heating gives a colourless gas. The residue is dissolved in water to give Y. To the aqueous solution of Y, CO2 is passed and it produces Z, which on gentle heating gives back X. Compound X is:
Answer» A compound $X$ on heating gives a colourless gas. The residue is dissolved in water to give $Y$ . To the aqueous solution of $Y$ , $C O_{2}$ is passed and it produces $Z$ , which on gentle heating gives back $X$ . Compound $X$ is:

Discussion

12.	Explain matter with the help of its properties.
Answer» Explain matter with the help of its properties.

Discussion

13.	Which of the following is a Bronsted acid?(i) HCN(ii) H2PO−4(iii) SO2−4(iv) NH3
Answer» Which of the following is a Bronsted acid? $(i) H C N (i i) H_{2} P O_{4}^{-} (i i i) S O_{4}^{2 -} (i v) N H_{3}$

Discussion

14.	The ionic mobility of alkali metal ions in aqueous solution is maximum for:
Answer» The ionic mobility of alkali metal ions in aqueous solution is maximum for:

Discussion

15.	A 4.24 mg sample of butyric acid is completely burnt.It gives 8.45 mg of carbon dioxide and 3.46 mg of H2O what is mass percent of each element in butyric acid ? Elaborated answer please
Answer» A 4.24 mg sample of butyric acid is completely burnt.It gives 8.45 mg of carbon dioxide and 3.46 mg of H2O what is mass percent of each element in butyric acid ? Elaborated answer please

15.

A 4.24 mg sample of butyric acid is completely burnt.It gives 8.45 mg of carbon dioxide and 3.46 mg of H2O what is mass percent of each element in butyric acid ? Elaborated answer please

Answer»

A 4.24 mg sample of butyric acid is completely burnt.It gives 8.45 mg of carbon dioxide and 3.46 mg of H2O what is mass percent of each element in butyric acid ?

Elaborated answer please

Discussion

16.	The benzyl free radical is aromatic because it ha
Answer» The benzyl free radical is aromatic because it ha

Discussion

17.	87 How to draw Lewis dot structure of CLO4- considering coordination bonds in diagram
Answer» 87 How to draw Lewis dot structure of CLO4- considering coordination bonds in diagram

Discussion

18.	Find the number of moles of HNO3 in a sample containing 108 molecules of HNO3.
Answer» Find the number of moles of $H N O_{3}$ in a sample containing $10^{8}$ molecules of $H N O_{3}$ .

Discussion

19.	Consider the reaction, 2Afor+ B(g)(g)2C(g)which Ko 350. If 0.001 mole of each of thereactants and product are mixed in a 2.0 L flaskthen the reaction quotient and the spontaneousdirection of the system will be
Answer» Consider the reaction, 2Afor+ B(g)(g)2C(g)which Ko 350. If 0.001 mole of each of thereactants and product are mixed in a 2.0 L flaskthen the reaction quotient and the spontaneousdirection of the system will be

Discussion

20.	A flask filled SO2(g) was weighed at a temperatureand pressure. The same flask was then filled withCH (g) at the same temperature and pressure. Themass of SO2(g) would be about(1) The same as that of the methane(2) One-fourth as heavy as methane(3) 4 times as heavy as methane(4) Twice as heavy as methane
Answer» A flask filled SO2(g) was weighed at a temperatureand pressure. The same flask was then filled withCH (g) at the same temperature and pressure. Themass of SO2(g) would be about(1) The same as that of the methane(2) One-fourth as heavy as methane(3) 4 times as heavy as methane(4) Twice as heavy as methane

Discussion

21.	Is dissolution of ammonium chloride in water an endothermic or exothermic reaction?
Answer» Is dissolution of ammonium chloride in water an endothermic or exothermic reaction?

Discussion

22.	In the following equilibrium, N2O4(g)⇌2NO2(g),when 5 moles of each is taken and the temperature is kept at 300 K. The total pressure was found to be 20 atm.Given: ΔG∘f(N2O4)=100 kJ,ΔG∘f(NO2)=50 kJ; R=8.3 J K−1 mol−1 and ln10=2.3Find ΔG (in J) of the reaction at 300 K.
Answer» In the following equilibrium, $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$ , when 5 moles of each is taken and the temperature is kept at 300 K. The total pressure was found to be 20 atm. Given: $Δ G_{f (N_{2} O_{4})}^{\circ} = 100 k J, Δ G_{f (N O_{2})}^{\circ} = 50 k J;$ $R = 8.3 J K^{- 1} m o l^{- 1} a n d ln 10 = 2.3$ Find $Δ G (i n J)$ of the reaction at $300 K$ .

Discussion

23.	Borazine(B_3N_3H_6) hydrolyse slowly according to following reaction B_3N_3H_6+H_2O (excess)→ NH_3+H_3BO_3+H_2 weight of borazine required to form 0.2 mole H_3BO_3
Answer» Borazine(B_3N_3H_6) hydrolyse slowly according to following reaction B_3N_3H_6+H_2O (excess)→ NH_3+H_3BO_3+H_2 weight of borazine required to form 0.2 mole H_3BO_3

Discussion

24.	In which of the following set of compounds, peroxide linkage is present?
Answer» In which of the following set of compounds, peroxide linkage is present?

Discussion

25.	what is slope? what is the formula to find slope?
Answer» what is slope? what is the formula to find slope?

Discussion

26.	in an aqueous solution of h2so4 mass percentage of h2so4 is found to be 49% calculate the molality of the solution
Answer» in an aqueous solution of h2so4 mass percentage of h2so4 is found to be 49% calculate the molality of the solution

Discussion

27.	The structure of (2R,3R)C2H5CH(CH3)CH(D)CH2D is:
Answer» The structure of $(2 R, 3 R) C_{2} H_{5} C H (C H_{3}) C H (D) C H_{2} D$ is:

Discussion

28.	Markownikoff's rule governs addition of HBr on
Answer» Markownikoff's rule governs addition of HBr on

Discussion

29.	Number of functional isomers of 2 - Phenyl ethanol:
Answer» Number of functional isomers of 2 - Phenyl ethanol:

Discussion

30.	Which of the following reaction is reversible in nature?
Answer» Which of the following reaction is reversible in nature?

Discussion

31.	Using IUPAC norms write the systematic names of the following: (i) [Co(NH3)6]Cl3 (ii) [Pt(NH3)2Cl(NH2CH3)]Cl (iii) [Ti(H2O)6]3+ (iv) [Co(NH3)4Cl(NO2)]Cl (v) [Mn(H2O)6]2+ (vi) [NiCl4]2− (vii) [Ni(NH3)6]Cl2 (viii) [Co(en)3]3+ (ix) [Ni(CO)4]
Answer» Using IUPAC norms write the systematic names of the following: (i) [Co(NH₃)6]Cl₃ (ii) [Pt(NH₃)₂Cl(NH₂CH₃)]Cl (iii) [Ti(H₂O)6]³⁺ (iv) [Co(NH₃)₄Cl(NO₂)]Cl (v) [Mn(H₂O)6]²⁺ (vi) [NiCl₄]²⁻ (vii) [Ni(NH₃)₆]Cl₂ (viii) [Co(en)₃]³⁺ (ix) [Ni(CO)₄]

31.

Using IUPAC norms write the systematic names of the following: (i) [Co(NH3)6]Cl3 (ii) [Pt(NH3)2Cl(NH2CH3)]Cl (iii) [Ti(H2O)6]3+ (iv) [Co(NH3)4Cl(NO2)]Cl (v) [Mn(H2O)6]2+ (vi) [NiCl4]2− (vii) [Ni(NH3)6]Cl2 (viii) [Co(en)3]3+ (ix) [Ni(CO)4]

Answer»

Using IUPAC norms write the systematic names of the following:

(i) [Co(NH₃)6]Cl₃

(ii) [Pt(NH₃)₂Cl(NH₂CH₃)]Cl

(iii) [Ti(H₂O)6]³⁺

(iv) [Co(NH₃)₄Cl(NO₂)]Cl

(v) [Mn(H₂O)6]²⁺

(vi) [NiCl₄]²⁻

(vii) [Ni(NH₃)₆]Cl₂

(viii) [Co(en)₃]³⁺

(ix) [Ni(CO)₄]

Discussion

32.	Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)
Answer» Elevation in boiling point was 0.52⁰C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K⁰ for water is 0.52 per 1000 gm of water)

32.

Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)

Answer»

Elevation in boiling point was 0.52⁰C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K⁰ for water is 0.52 per 1000 gm of water)

Discussion

33.	Find all the intermediates and products formed during the course of the following reaction.
Answer» Find all the intermediates and products formed during the course of the following reaction.

Discussion

34.	When (±)-2,3-dibromobutane reacts with KOH, trans-2-bromobut-2-ene is formed. Which of the following is/are true?
Answer» When (±)-2,3-dibromobutane reacts with $K O H$ , trans-2-bromobut-2-ene is formed. Which of the following is/are true?

Discussion

35.	A white precipitate is obtained by adding common salt solution into a solution of : 1.silver nitrate 2.pottasium nitrate 3.ammonium nitrate 4.barium nitrate
Answer» A white precipitate is obtained by adding common salt solution into a solution of : 1.silver nitrate 2.pottasium nitrate 3.ammonium nitrate 4.barium nitrate

Discussion

36.	38.200 gm of CaCO3 are taken in a 4L container at a certain temperature.Kc for the dissociation of CaCO3 at this temperature is found to be 1/4moleL-1. Then the concentration of CaO(s) in mole/litre is (Given density of CaO=1.12gcm-3) OPTIONS: A)1/2 B)1/4 C)0.02 D)20
Answer» 38.200 gm of CaCO3 are taken in a 4L container at a certain temperature.Kc for the dissociation of CaCO3 at this temperature is found to be 1/4moleL-1. Then the concentration of CaO(s) in mole/litre is (Given density of CaO=1.12gcm-3) OPTIONS: A)1/2 B)1/4 C)0.02 D)20

Discussion

37.	Is their any relation, that if in any Lewis structure, octet rule is not valid then coordinate bonding will be absent.And if their is octet rule is valid then coordinate bonding will be present.
Answer» Is their any relation, that if in any Lewis structure, octet rule is not valid then coordinate bonding will be absent. And if their is octet rule is valid then coordinate bonding will be present.

Discussion

38.	10. 0.21 g of an organic compound containing C,H,N&O gave upon combustion 0.462 g of CO2 and 0.1215 g of H2O. The ammonia produced on distillation of 0.104 g of thus compound with NaOH, required 15 ml of N/20 H2SO4 for neutralisation. Then prove that the empirical formula is C7H9NO2.
Answer» 10. 0.21 g of an organic compound containing C,H,N&O gave upon combustion 0.462 g of CO2 and 0.1215 g of H2O. The ammonia produced on distillation of 0.104 g of thus compound with NaOH, required 15 ml of N/20 H2SO4 for neutralisation. Then prove that the empirical formula is C7H9NO2.

Discussion

39.	Some gas at 300K is enclosed in a container. Now, the container is placed on a fast moving train .While the train is in motion, the temperature of the gas (1) rises above 300K (2) falls below 300K (3) remains unchanged (4) becomes unstead
Answer» Some gas at 300K is enclosed in a container. Now, the container is placed on a fast moving train .While the train is in motion, the temperature of the gas (1) rises above 300K (2) falls below 300K (3) remains unchanged (4) becomes unstead

Discussion

40.	Why work done in a reversible is greater than Irreversible during compression and vice versa is true for work done during expansion???
Answer» Why work done in a reversible is greater than Irreversible during compression and vice versa is true for work done during expansion???

Discussion

41.	A solutioncontaining 30 g of non-volatile solute exactly in 90 g of water has avapourpressure of 2.8 kPa at 298 K.Further, 18 g of water is then added tothesolution and the new vapour pressure becomes 2.9 kPa at 298 K.Calculate: molar mass of the solute vapour pressure of water at 298 K.
Answer» A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calculate: molar mass of the solute vapour pressure of water at 298 K.

41.

A solutioncontaining 30 g of non-volatile solute exactly in 90 g of water has avapourpressure of 2.8 kPa at 298 K.Further, 18 g of water is then added tothesolution and the new vapour pressure becomes 2.9 kPa at 298 K.Calculate: molar mass of the solute vapour pressure of water at 298 K.

Answer»

A solution
containing 30 g of non-volatile solute exactly in 90 g of water has a

vapour
pressure of 2.8 kPa at 298 K.
Further, 18 g of water is then added to

the
solution and the new vapour pressure becomes 2.9 kPa at 298 K.
Calculate:

molar
mass of the solute
vapour
pressure of water at 298 K.

Discussion

42.	The rise in the boiling point of a solution containing 1.8 gram of glucose in 100g of a solvent is 0.1^()C . The molal elevation constant of the liquid is
Answer» The rise in the boiling point of a solution containing 1.8 gram of glucose in 100g of a solvent is 0.1^()C . The molal elevation constant of the liquid is

Discussion

43.	For the process H2O(l)(1bar,373K) → H2O(g) (1bar,373K), the correct set of thermodynamic parameters is
Answer» For the process $H_{2} O (l) (1 b a r, 373 K) \to H_{2} O (g) (1 b a r, 373 K)$ , the correct set of thermodynamic parameters is

Discussion

44.	What is the reason behind compressibility of gases?
Answer» What is the reason behind compressibility of gases?

Discussion

45.	Wavelength of the de-Broglie wave of an electron revolving in the fourth orbit of the hydrogen atom is (r0 is the Bohr's radius) Options: a- 25 r0 b- r0 c-10 r0 d- 8 r0
Answer» Wavelength of the de-Broglie wave of an electron revolving in the fourth orbit of the hydrogen atom is (r0 is the Bohr's radius) Options: a- 25 r0 b- r0 c-10 r0 d- 8 r0

Discussion

46.	2-butyne and 1,3-butadiene exhibit?
Answer» 2-butyne and 1,3-butadiene exhibit?

Discussion

47.	Which is more soluble Mg(oh)2 or. Ba(oh)2 While comparing solubility do we compare Ksp(solubility product values) or solubility (s) value
Answer» Which is more soluble Mg(oh)2 or. Ba(oh)2 While comparing solubility do we compare Ksp(solubility product values) or solubility (s) value

47.

Which is more soluble Mg(oh)2 or. Ba(oh)2 While comparing solubility do we compare Ksp(solubility product values) or solubility (s) value

Answer»

Which is more soluble Mg(oh)2 or. Ba(oh)2

While comparing solubility do we compare Ksp(solubility product values) or solubility (s) value

Discussion

48.	Monomer of orlon ?
Answer» Monomer of orlon ?

Discussion

49.	Half life of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is :
Answer» Half life of a first-order reaction is $1386 s e c o n d s$ . The specific rate constant of the reaction is :

Discussion

50.	Find the amount of work done in joules to increase the temperature of one mole of an ideal gas by 30∘C if it is expanding under the condition V∝T2/3. Answer to the nearest integer.
Answer» Find the amount of work done in joules to increase the temperature of one mole of an ideal gas by $30^{\circ} C$ if it is expanding under the condition $V \propto T^{2 / 3}$ . Answer to the nearest integer.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Ni^{2+ }can be estimated by used dmg and forms a Rosy red ppt. the complex is extra stabilised by which bonds ?

In an isochoric process, ΔH for a system equals to:

If the no of H atoms in P is x, no of π electrons is y and no of lone pair electrons is z then value of x+y+z is

What are leptons , mesons , bosons

18. 10g of MnO2 on reaction with HCL forms 2.24L of chlorine gas at NTP, the percentage impurity of MnO2 is 1) 87% 2) 25% 3) 33.3% 4) 13%

46. Cyclohexene reacts with br2 and ccl4 and gives a product, the formation of product involves A. SN1 B. SN2 C. E1 D. None of the above

When SO, is passed in acidified K,Cr,O, solution oxidation state of S changed from2(1) +4 to 0(2) +4 to +2(3) +4 to +6(4) +6 to +4

Consider the following reaction and indentify (P).

How to balance a chemical equatio

The de Broglie wavelength of a Neutron at 27 degree centigrade is Lambda what will be the wavelength at 927 degree centigrade

A compound X on heating gives a colourless gas. The residue is dissolved in water to give Y. To the aqueous solution of Y, CO2 is passed and it produces Z, which on gentle heating gives back X. Compound X is:

Explain matter with the help of its properties.

Which of the following is a Bronsted acid?(i) HCN(ii) H2PO−4(iii) SO2−4(iv) NH3

The ionic mobility of alkali metal ions in aqueous solution is maximum for:

A 4.24 mg sample of butyric acid is completely burnt.It gives 8.45 mg of carbon dioxide and 3.46 mg of H2O what is mass percent of each element in butyric acid ? Elaborated answer please

The benzyl free radical is aromatic because it ha

87 How to draw Lewis dot structure of CLO4- considering coordination bonds in diagram

Find the number of moles of HNO3 in a sample containing 108 molecules of HNO3.

Consider the reaction, 2Afor+ B(g)(g)2C(g)which Ko 350. If 0.001 mole of each of thereactants and product are mixed in a 2.0 L flaskthen the reaction quotient and the spontaneousdirection of the system will be

Is dissolution of ammonium chloride in water an endothermic or exothermic reaction?

In the following equilibrium, N2O4(g)⇌2NO2(g),when 5 moles of each is taken and the temperature is kept at 300 K. The total pressure was found to be 20 atm.Given: ΔG∘f(N2O4)=100 kJ,ΔG∘f(NO2)=50 kJ; R=8.3 J K−1 mol−1 and ln10=2.3Find ΔG (in J) of the reaction at 300 K.

Borazine(B_3N_3H_6) hydrolyse slowly according to following reaction B_3N_3H_6+H_2O (excess)→ NH_3+H_3BO_3+H_2 weight of borazine required to form 0.2 mole H_3BO_3

In which of the following set of compounds, peroxide linkage is present?

what is slope? what is the formula to find slope?

in an aqueous solution of h2so4 mass percentage of h2so4 is found to be 49% calculate the molality of the solution

The structure of (2R,3R)C2H5CH(CH3)CH(D)CH2D is:

Markownikoff's rule governs addition of HBr on

Number of functional isomers of 2 - Phenyl ethanol:

Which of the following reaction is reversible in nature?

Using IUPAC norms write the systematic names of the following: (i) [Co(NH3)6]Cl3 (ii) [Pt(NH3)2Cl(NH2CH3)]Cl (iii) [Ti(H2O)6]3+ (iv) [Co(NH3)4Cl(NO2)]Cl (v) [Mn(H2O)6]2+ (vi) [NiCl4]2− (vii) [Ni(NH3)6]Cl2 (viii) [Co(en)3]3+ (ix) [Ni(CO)4]

Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)

Find all the intermediates and products formed during the course of the following reaction.

When (±)-2,3-dibromobutane reacts with KOH, trans-2-bromobut-2-ene is formed. Which of the following is/are true?

A white precipitate is obtained by adding common salt solution into a solution of : 1.silver nitrate 2.pottasium nitrate 3.ammonium nitrate 4.barium nitrate

38.200 gm of CaCO3 are taken in a 4L container at a certain temperature.Kc for the dissociation of CaCO3 at this temperature is found to be 1/4moleL-1. Then the concentration of CaO(s) in mole/litre is (Given density of CaO=1.12gcm-3) OPTIONS: A)1/2 B)1/4 C)0.02 D)20

Is their any relation, that if in any Lewis structure, octet rule is not valid then coordinate bonding will be absent.And if their is octet rule is valid then coordinate bonding will be present.

10. 0.21 g of an organic compound containing C,H,N&O gave upon combustion 0.462 g of CO2 and 0.1215 g of H2O. The ammonia produced on distillation of 0.104 g of thus compound with NaOH, required 15 ml of N/20 H2SO4 for neutralisation. Then prove that the empirical formula is C7H9NO2.

Some gas at 300K is enclosed in a container. Now, the container is placed on a fast moving train .While the train is in motion, the temperature of the gas (1) rises above 300K (2) falls below 300K (3) remains unchanged (4) becomes unstead

Why work done in a reversible is greater than Irreversible during compression and vice versa is true for work done during expansion??? ​​

A solutioncontaining 30 g of non-volatile solute exactly in 90 g of water has avapourpressure of 2.8 kPa at 298 K.Further, 18 g of water is then added tothesolution and the new vapour pressure becomes 2.9 kPa at 298 K.Calculate: molar mass of the solute vapour pressure of water at 298 K.

The rise in the boiling point of a solution containing 1.8 gram of glucose in 100g of a solvent is 0.1^()C . The molal elevation constant of the liquid is

For the process H2O(l)(1bar,373K) → H2O(g) (1bar,373K), the correct set of thermodynamic parameters is

What is the reason behind compressibility of gases?

Wavelength of the de-Broglie wave of an electron revolving in the fourth orbit of the hydrogen atom is (r0 is the Bohr's radius) Options: a- 25 r0 b- r0 c-10 r0 d- 8 r0

2-butyne and 1,3-butadiene exhibit?

Which is more soluble Mg(oh)2 or. Ba(oh)2 While comparing solubility do we compare Ksp(solubility product values) or solubility (s) value

Monomer of orlon ?

Half life of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is :

Find the amount of work done in joules to increase the temperature of one mole of an ideal gas by 30∘C if it is expanding under the condition V∝T2/3. Answer to the nearest integer.

Why work done in a reversible is greater than Irreversible during compression and vice versa is true for work done during expansion???