46295 + Interview Questions in Chemistry

1.	A positive carbyl amine test is given by1. N, N - Dimethyl aniline2. 2,4 - Dimethyl aniline3. N - Methyl - o - methyl aniline4. p - Methyl benzyl amine
Answer» A positive carbyl amine test is given by 1. N, N - Dimethyl aniline 2. 2,4 - Dimethyl aniline 3. N - Methyl - o - methyl aniline 4. p - Methyl benzyl amine

1.

A positive carbyl amine test is given by1. N, N - Dimethyl aniline2. 2,4 - Dimethyl aniline3. N - Methyl - o - methyl aniline4. p - Methyl benzyl amine

Answer»

A positive carbyl amine test is given by

1. N, N - Dimethyl aniline

2. 2,4 - Dimethyl aniline

3. N - Methyl - o - methyl aniline

4. p - Methyl benzyl amine

Discussion

2.	Backbonding in trisilyl amine
Answer» Backbonding in trisilyl amine

Discussion

3.	what is the final product when ethanal and methanal first react with dil naoh and heat to form X. X reactswith HCN and h3o+ to give
Answer» what is the final product when ethanal and methanal first react with dil naoh and heat to form X. X reactswith HCN and h3o+ to give

Discussion

4.	Which reagent converts propene to 1-propanol?
Answer» Which reagent converts propene to 1-propanol?

Discussion

5.	Electron dot structure of P4O7
Answer» Electron dot structure of P4O7

Discussion

6.	Is nitrogen gas a compound or a element?
Answer» Is nitrogen gas a compound or a element?

Discussion

7.	Energy released in the fission of a single 92U235 nucleus is 200 MeV . What is the fission rate of a 92U235 fuelled reactor operating at a power level of 5 W ?
Answer» Energy released in the fission of a single ₉₂U²³⁵nucleus is 200 MeV . What is the fission rate of a ₉₂U²³⁵ fuelled reactor operating at a power level of 5 W ?

Discussion

8.	FeS2 + O2 → Fe2O3 +SO2. balance the following equatio
Answer» FeS2 + O2 → Fe2O3 +SO2. balance the following equatio

Discussion

9.	If Ee,Eα,Ep represents the kinetic energies of an electron, alpha particle and a proton respectively, each moving with same de-Broglie wavelength then:
Answer» If $E_{e}, E_{α}, E_{p}$ represents the kinetic energies of an electron, alpha particle and a proton respectively, each moving with same de-Broglie wavelength then:

Discussion

10.	What is the correct order of decreasing acidic strengths?
Answer» What is the correct order of decreasing acidic strengths?

Discussion

11.	cyclopen†an one react with CF3COOH to give what as product?
Answer» cyclopen†an one react with CF3COOH to give what as product?

Discussion

12.	Writedown the number of 3d electrons in each of the following ions: Ti2+,V2+,Cr3+,Mn2+,Fe2+,Fe3+,CO2+,Ni2+and Cu2+.Indicatehow would you expect the five 3d orbitals to be occupied for thesehydrated ions (octahedral).
Answer» Write down the number of 3d electrons in each of the following ions: Ti²⁺, V²⁺, Cr³⁺, Mn²⁺, Fe²⁺, Fe³⁺, CO²⁺, Ni²⁺ and Cu²⁺. Indicate how would you expect the five 3d orbitals to be occupied for these hydrated ions (octahedral).

12.

Writedown the number of 3d electrons in each of the following ions: Ti2+,V2+,Cr3+,Mn2+,Fe2+,Fe3+,CO2+,Ni2+and Cu2+.Indicatehow would you expect the five 3d orbitals to be occupied for thesehydrated ions (octahedral).

Answer»

Write
down the number of 3d electrons in each of the following ions:

Ti²⁺,
V²⁺,
Cr³⁺,
Mn²⁺,
Fe²⁺,
Fe³⁺,
CO²⁺,
Ni²⁺
and Cu²⁺.

Indicate
how would you expect the five 3d orbitals to be occupied for these
hydrated ions (octahedral).

Discussion

13.	57. Given (i) Cu2+ + 2e– Cu, Eo = 0.337 V (ii) Cu2+ + e– Cu+, Eo = 0.153 V Electrode potential, Eo for the reaction, Cu+ + e– Cu, will be (1) 0.38 V (2) 0.52 V (3) 0.90 V (4) 0.30 V
Answer» 57. Given (i) Cu2+ + 2e– Cu, Eo = 0.337 V (ii) Cu2+ + e– Cu+, Eo = 0.153 V Electrode potential, Eo for the reaction, Cu+ + e– Cu, will be (1) 0.38 V (2) 0.52 V (3) 0.90 V (4) 0.30 V

Discussion

14.	Order of hydrogen bonding in h2o methanol ethanol
Answer» Order of hydrogen bonding in h2o methanol ethanol

Discussion

15.	A process A D is difficult to occur directlyinstead it takes place in three successive stepsC AS (A B) = 40 e.u.AS (BC) 30 e.u.DAS (D-C) 20 e.u.Bwhere e.u. is entropy unit.Then, the entropy change AS, for the process(A D) is
Answer» A process A D is difficult to occur directlyinstead it takes place in three successive stepsC AS (A B) = 40 e.u.AS (BC) 30 e.u.DAS (D-C) 20 e.u.Bwhere e.u. is entropy unit.Then, the entropy change AS, for the process(A D) is

Discussion

16.	1/√5+√2
Answer» 1/√5+√2

Discussion

17.	What are the applications of refraction in our everyday life
Answer» What are the applications of refraction in our everyday life

Discussion

18.	Butyne-1 and Butene-1 can be distinguished by
Answer» Butyne-1 and Butene-1 can be distinguished by

Discussion

19.	An ideal gas has molar specific heat ratio (CP/CV) of 1.5. The gas is at pressure of 6 × 106 N m–2. Itis compressed adiabatically to half of its initial volume. What is the rise in pressure of the gas?(1) 10.97 × 106 N m–2(2) 16.97 × 106 N m–2(3) 6.28 × 106 N m–2(4) 12 × 106 N m–2
Answer» An ideal gas has molar specific heat ratio (CP/CV) of 1.5. The gas is at pressure of 6 × 106 N m–2 . It is compressed adiabatically to half of its initial volume. What is the rise in pressure of the gas? (1) 10.97 × 106 N m–2 (2) 16.97 × 106 N m–2 (3) 6.28 × 106 N m–2 (4) 12 × 106 N m–2

Discussion

20.	What are the vector laws?
Answer» What are the vector laws?

Discussion

21.	Visible light has wavelengths in the range of 400 nm to 780 nm. Calculate the range of energy of the photons of visible light.
Answer» Visible light has wavelengths in the range of 400 nm to 780 nm. Calculate the range of energy of the photons of visible light.

Discussion

22.	The atomic masses of He and Ne are 4 and 20 amu, respectively. The value of the de-Broglie wavelength of He gas at −73°C is ‘M’ times that of the de-Broglie wavelength of Ne at 727 °C. M is:
Answer» The atomic masses of $H e$ and $N e$ are $4$ and $20 a m u$ , respectively. The value of the de-Broglie wavelength of $H e$ gas at $- 73 ° C$ is ‘ $M$ ’ times that of the de-Broglie wavelength of $N e$ at $727 ° C$ . $M$ is:

Discussion

23.	Which of the following compounds exhibit geometrical isomerism?
Answer» Which of the following compounds exhibit geometrical isomerism?

Discussion

24.	55. The electronegativity of H and Cl are 2.1 and 3.0respectively. The correct statement (s) about the nature ofHCl is /are:(a) 17% ionic(c) 50% ionic(b) 83% ionic(d) 100% ionic
Answer» 55. The electronegativity of H and Cl are 2.1 and 3.0respectively. The correct statement (s) about the nature ofHCl is /are:(a) 17% ionic(c) 50% ionic(b) 83% ionic(d) 100% ionic

Discussion

25.	In the given pairs which of the following pairs of molecules/ions, both the species does not likely to exist?
Answer» In the given pairs which of the following pairs of molecules/ions, both the species does not likely to exist?

Discussion

26.	What is Henry’s Law?
Answer» What is Henry’s Law?

Discussion

27.	Which of the following pairs is not isomorphous?
Answer» Which of the following pairs is not isomorphous?

Discussion

28.	A solution containing 0.1 mole of urea in 1 L ofglacial acetic acid, when cooled the first crystalwhich appears at the freezing point contain themolecules of
Answer» A solution containing 0.1 mole of urea in 1 L ofglacial acetic acid, when cooled the first crystalwhich appears at the freezing point contain themolecules of

Discussion

29.	Why is LiH more covalent than NaH, KH, RbH and CsH?
Answer» Why is LiH more covalent than NaH, KH, RbH and CsH?

Discussion

30.	Baeyer’s reagent is used for detection of
Answer» Baeyer’s reagent is used for detection of

Discussion

31.	what is solid angle ?explain d omega = dA/r*rhow does it become dimensionless quantity ?
Answer» what is solid angle ? explain d omega = dA/r*r how does it become dimensionless quantity ?

Discussion

32.	Lewis acid among the following is
Answer» Lewis acid among the following is

Discussion

33.	Out of CHCl_3 , CH_4 and SF_{4 } the molecules having reggular geometry are a) CHCl_3 only b)CHCl_3 and SF_4 c) CH_4 only d) CH_4 and SF_4
Answer» Out of CHCl_3 , CH_4 and SF_{4 } the molecules having reggular geometry are a) CHCl_3 only b)CHCl_3 and SF_4 c) CH_4 only d) CH_4 and SF_4

Discussion

34.	Which of the following reaction products give haloform test?
Answer» Which of the following reaction products give haloform test?

Discussion

35.	For the reaction A B, Δ H = –90 kJ mol–1 and Δ S = 300 JK–1 mol–1. The temperature at which the reaction will be in equilibrium, is Options: a- 327 K b-47^° C c-427 K d 27^° C
Answer» For the reaction A B, Δ H = –90 kJ mol–1 and Δ S = 300 JK–1 mol–1. The temperature at which the reaction will be in equilibrium, is Options: a- 327 K b-47^° C c-427 K d 27^° C

Discussion

36.	In an ore containing uranium, the ratio of U−238 to Pb−206 is 3. Assuming that all the lead present in the ore is the final stable product of U−238. If age of the ore is 1.868×10n years. The value of the n is (integer only).(Take the half life of U−238 to be 4.5×109 years. (ln43=0.2876)
Answer» In an ore containing uranium, the ratio of $U - 238$ to $Pb - 206$ is $3.$ Assuming that all the lead present in the ore is the final stable product of $U - 238.$ If age of the ore is $1.868 \times 10^{n}$ years. The value of the $n$ is (integer only). (Take the half life of $U - 238$ to be $4.5 \times 10^{9}$ years. $(ln \frac{4}{3} = 0.2876)$

Discussion

37.	When D-fructose is reduced with NaBH4/H3O+, alditols are produced. Which of the following compounds will give the same alditol on reduction with NaBH4/H3O+?
Answer» When D-fructose is reduced with $N a B H_{4} / H_{3} O^{+}$ , alditols are produced. Which of the following compounds will give the same alditol on reduction with $N a B H_{4} / H_{3} O^{+}$ ?

Discussion

38.	Explain rate of reaction.
Answer» Explain rate of reaction.

Discussion

39.	Second nearest neighbour in CsCl solid ans: 6 how the answer came I want step by step detailed explanation
Answer» Second nearest neighbour in CsCl solid ans: 6 how the answer came I want step by step detailed explanation

39.

Second nearest neighbour in CsCl solid ans: 6 how the answer came I want step by step detailed explanation

Answer»

Second nearest neighbour in CsCl solid

ans: 6

how the answer came

I want step by step detailed explanation

Discussion

40.	2 charges of +2510^-9 C and -2510^-9 are placed 6m apart Find the electric field intensity ratio at points 4 from the center of the electric dipole on [i]axial line [ii] on equatorial line
Answer» 2 charges of +2510^-9 C and -2510^-9 are placed 6m apart Find the electric field intensity ratio at points 4 from the center of the electric dipole on [i]axial line [ii] on equatorial line

Discussion

41.	Indicate the steps in the preparation of:(i) K2Cr2O7from chromite ore.(ii) KMnO4from pyrolusite ore.
Answer» Indicate the steps in the preparation of: (i) K2Cr2O7 from chromite ore. (ii) KMnO4 from pyrolusite ore.

41.

Indicate the steps in the preparation of:(i) K2Cr2O7from chromite ore.(ii) KMnO4from pyrolusite ore.

Answer»

Indicate the steps in the preparation of:

(i) K2Cr2O7
from chromite ore.

(ii) KMnO4
from pyrolusite ore.

Discussion

42.	The rate of diffusion of two gases X and Y is in the ratio of 1:5 and that of Y and Z in the ratio of I: 6. The ratioof the rate of diffusion of Z with respect to X is
Answer» The rate of diffusion of two gases X and Y is in the ratio of 1:5 and that of Y and Z in the ratio of I: 6. The ratioof the rate of diffusion of Z with respect to X is

Discussion

43.	CH3CHO (g) gives CH4(g) + CO (g) Rate =k [CH3CHO]32 determine their order of reaction and the dimensions of the rate constant.
Answer» $C H_{3} C H O$ (g) gives $C H_{4}$ (g) + CO (g) Rate =k ${[C H_{3} C H O]}_{3}^{\frac{3}{2}}$ determine their order of reaction and the dimensions of the rate constant.

43.

CH3CHO (g) gives CH4(g) + CO (g) Rate =k [CH3CHO]32 determine their order of reaction and the dimensions of the rate constant.

Answer»

$C H_{3} C H O$ (g) gives $C H_{4}$ (g) + CO (g)

Rate =k ${[C H_{3} C H O]}_{3}^{\frac{3}{2}}$ determine their order of reaction and the dimensions of the rate constant.

Discussion

44.	Which of the following is not a linear polyatomic molecule?
Answer» Which of the following is not a linear polyatomic molecule?

Discussion

45.	Which of the following come under the category of chemical pollutants?
Answer» Which of the following come under the category of chemical pollutants?

Discussion

46.	how many noble gases are present in the world?
Answer» how many noble gases are present in the world?

Discussion

47.	1000 g H2O have 0.1 mole urea and it's freezing point is -0.2 degree now it's freezed up to -2 degree then how much amount of ice will form
Answer» 1000 g H2O have 0.1 mole urea and it's freezing point is -0.2 degree now it's freezed up to -2 degree then how much amount of ice will form

Discussion

48.	What is the effect of adding a catalyst to a reaction which is in equilibrium?
Answer» What is the effect of adding a catalyst to a reaction which is in equilibrium?

Discussion

49.	9. When a certain volume V ml of a gaseous hydrocarbon is exploded with excess of oxygen and the products cooled to room temperature, the observed contraction in volume was 1.5V ml. A further contraction of 2V ml was observed on exposure of the product Gases to alkali. Formula hydrocarbon is?
Answer» 9. When a certain volume V ml of a gaseous hydrocarbon is exploded with excess of oxygen and the products cooled to room temperature, the observed contraction in volume was 1.5V ml. A further contraction of 2V ml was observed on exposure of the product Gases to alkali. Formula hydrocarbon is?

Discussion

50.	Correct order of ionization enthalpy is(2) B Al < Ga > In(1) B> Al> In > Ga(4) B < Al < Ga < In(3) B Al> Ga < In
Answer» Correct order of ionization enthalpy is(2) B Al < Ga > In(1) B> Al> In > Ga(4) B < Al < Ga < In(3) B Al> Ga < In

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A positive carbyl amine test is given by1. N, N - Dimethyl aniline2. 2,4 - Dimethyl aniline3. N - Methyl - o - methyl aniline4. p - Methyl benzyl amine

Backbonding in trisilyl amine

what is the final product when ethanal and methanal first react with dil naoh and heat to form X. X reactswith HCN and h3o+ to give

Which reagent converts propene to 1-propanol?

Electron dot structure of P4O7

Is nitrogen gas a compound or a element?

Energy released in the fission of a single 92U235 nucleus is 200 MeV . What is the fission rate of a 92U235 fuelled reactor operating at a power level of 5 W ?

FeS2 + O2 → Fe2O3 +SO2. balance the following equatio

If Ee,Eα,Ep represents the kinetic energies of an electron, alpha particle and a proton respectively, each moving with same de-Broglie wavelength then:

What is the correct order of decreasing acidic strengths?

cyclopen†an one react with CF3COOH to give what as product?

Writedown the number of 3d electrons in each of the following ions: Ti2+,V2+,Cr3+,Mn2+,Fe2+,Fe3+,CO2+,Ni2+and Cu2+.Indicatehow would you expect the five 3d orbitals to be occupied for thesehydrated ions (octahedral).

57. Given (i) Cu2+ + 2e– Cu, Eo = 0.337 V (ii) Cu2+ + e– Cu+, Eo = 0.153 V Electrode potential, Eo for the reaction, Cu+ + e– Cu, will be (1) 0.38 V (2) 0.52 V (3) 0.90 V (4) 0.30 V

Order of hydrogen bonding in h2o methanol ethanol

A process A D is difficult to occur directlyinstead it takes place in three successive stepsC AS (A B) = 40 e.u.AS (BC) 30 e.u.DAS (D-C) 20 e.u.Bwhere e.u. is entropy unit.Then, the entropy change AS, for the process(A D) is

1/√5+√2

What are the applications of refraction in our everyday life

Butyne-1 and Butene-1 can be distinguished by

An ideal gas has molar specific heat ratio (CP/CV) of 1.5. The gas is at pressure of 6 × 106 N m–2. Itis compressed adiabatically to half of its initial volume. What is the rise in pressure of the gas?(1) 10.97 × 106 N m–2(2) 16.97 × 106 N m–2(3) 6.28 × 106 N m–2(4) 12 × 106 N m–2

What are the vector laws?

Visible light has wavelengths in the range of 400 nm to 780 nm. Calculate the range of energy of the photons of visible light.

The atomic masses of He and Ne are 4 and 20 amu, respectively. The value of the de-Broglie wavelength of He gas at −73°C is ‘M’ times that of the de-Broglie wavelength of Ne at 727 °C. M is:

Which of the following compounds exhibit geometrical isomerism?

55. The electronegativity of H and Cl are 2.1 and 3.0respectively. The correct statement (s) about the nature ofHCl is /are:(a) 17% ionic(c) 50% ionic(b) 83% ionic(d) 100% ionic

In the given pairs which of the following pairs of molecules/ions, both the species does not likely to exist?

What is Henry’s Law?

Which of the following pairs is not isomorphous?

A solution containing 0.1 mole of urea in 1 L ofglacial acetic acid, when cooled the first crystalwhich appears at the freezing point contain themolecules of

Why is LiH more covalent than NaH, KH, RbH and CsH?

Baeyer’s reagent is used for detection of

what is solid angle ?explain d omega = dA/r*rhow does it become dimensionless quantity ?

Lewis acid among the following is

Out of CHCl_3 , CH_4 and SF_{4 } the molecules having reggular geometry are a) CHCl_3 only b)CHCl_3 and SF_4 c) CH_4 only d) CH_4 and SF_4

Which of the following reaction products give haloform test?

For the reaction A B, Δ H = –90 kJ mol–1 and Δ S = 300 JK–1 mol–1. The temperature at which the reaction will be in equilibrium, is Options: a- 327 K b-47^° C c-427 K d 27^° C

In an ore containing uranium, the ratio of U−238 to Pb−206 is 3. Assuming that all the lead present in the ore is the final stable product of U−238. If age of the ore is 1.868×10n years. The value of the n is (integer only).(Take the half life of U−238 to be 4.5×109 years. (ln43=0.2876)

When D-fructose is reduced with NaBH4/H3O+, alditols are produced. Which of the following compounds will give the same alditol on reduction with NaBH4/H3O+?

Explain rate of reaction.

Second nearest neighbour in CsCl solid ans: 6 how the answer came I want step by step detailed explanation

2 charges of +25*10^-9 C and -25*10^-9 are placed 6m apart Find the electric field intensity ratio at points 4 from the center of the electric dipole on [i]axial line [ii] on equatorial line

Indicate the steps in the preparation of:(i) K2Cr2O7from chromite ore.(ii) KMnO4from pyrolusite ore.

The rate of diffusion of two gases X and Y is in the ratio of 1:5 and that of Y and Z in the ratio of I: 6. The ratioof the rate of diffusion of Z with respect to X is

CH3CHO (g) gives CH4(g) + CO (g) Rate =k [CH3CHO]32 determine their order of reaction and the dimensions of the rate constant.

Which of the following is not a linear polyatomic molecule?

Which of the following come under the category of chemical pollutants?

how many noble gases are present in the world?

1000 g H2O have 0.1 mole urea and it's freezing point is -0.2 degree now it's freezed up to -2 degree then how much amount of ice will form​

What is the effect of adding a catalyst to a reaction which is in equilibrium?

9. When a certain volume V ml of a gaseous hydrocarbon is exploded with excess of oxygen and the products cooled to room temperature, the observed contraction in volume was 1.5V ml. A further contraction of 2V ml was observed on exposure of the product Gases to alkali. Formula hydrocarbon is?

Correct order of ionization enthalpy is(2) B Al < Ga > In(1) B> Al> In > Ga(4) B < Al < Ga < In(3) B Al> Ga < In

2 charges of +2510^-9 C and -2510^-9 are placed 6m apart Find the electric field intensity ratio at points 4 from the center of the electric dipole on [i]axial line [ii] on equatorial line

1000 g H2O have 0.1 mole urea and it's freezing point is -0.2 degree now it's freezed up to -2 degree then how much amount of ice will form