46295 + Interview Questions in Chemistry

1.	Arrange the following groups in the order of decreasing (-I) effect.
Answer» Arrange the following groups in the order of decreasing (-I) effect.

Discussion

2.	Magnetic moment of which ion is 2.88 BM ?
Answer» Magnetic moment of which ion is 2.88 BM ?

Discussion

3.	In the given reaction,4 Fe(s) + 302(g) → 2FE203(s)The entropy change and enthalpy change of reaction respectively are 800 J K-1 mol-1 and 1600 kJ/mole.What will be the temperature above which reaction will be spontaneous?
Answer» In the given reaction, 4 Fe(s) + 302(g) → 2FE203(s) The entropy change and enthalpy change of reaction respectively are 800 J K-1 mol-1 and 1600 kJ/mole. What will be the temperature above which reaction will be spontaneous?

Discussion

4.	21. Compound on reaction with H2/Pd-BaSO4(one equivalent) give A → Na/NH3(l)(B) B is
Answer» 21. Compound on reaction with H2/Pd-BaSO4(one equivalent) give A → Na/NH3(l)(B) B is

Discussion

5.	An organic compound contains 1.6% of O atom. 1 molecule of the compound contains 2 atoms of O. The molecular mass of the compound is:
Answer» An organic compound contains $1.6 %$ of $O$ atom. $1$ molecule of the compound contains $2$ atoms of $O$ . The molecular mass of the compound is:

Discussion

6.	An alkene on heating with hot acidified KMNO4 gives succinic acid. The alkene is:
Answer» An alkene on heating with hot acidified KMNO4 gives succinic acid. The alkene is:

Discussion

7.	Value of CFSE, in tetrahedral complex having 3d4 configuration of metal ion, surrounded by weak field ligands, will be :-(1) - frac{2}{5}{Delta _t}(2) + frac{2}{5}{Delta _t}(3) - frac{4}{5}{Delta _t}(4) + frac{3}{5}{Delta _t
Answer» Value of CFSE, in tetrahedral complex having 3d4 configuration of metal ion, surrounded by weak field ligands, will be :- (1) - frac{2}{5}{Delta _t} (2) + frac{2}{5}{Delta _t} (3) - frac{4}{5}{Delta _t} (4) + frac{3}{5}{Delta _t

Discussion

8.	Which of the following orders is correct for heat of hydrogenation of these compounds?
Answer» Which of the following orders is correct for heat of hydrogenation of these compounds?

Discussion

9.	Consider the reaction.Bk1←−Ak2−→CThe rate constant for two parallel reactions were found to be 10–2 dm3 mol–1 s–1(k1) and 4×10–2 dm3 mol–1 s–1(k2). If the corresponding energies of activation of the parallel reactions are 80 and 100 kJ, respectively. What is the apparent (net) overall energy of activation (in kJ/mol) of a given reaction?
Answer» Consider the reaction. $B k_{1} \leftarrow - A k_{2} - \to C$ The rate constant for two parallel reactions were found to be $10^{- 2} {dm}^{3} {mol}^{- 1} s^{- 1} (k_{1})$ and $4 \times 10^{- 2} {dm}^{3} {mol}^{- 1} s^{- 1} (k_{2})$ . If the corresponding energies of activation of the parallel reactions are $80$ and $100 kJ$ , respectively. What is the apparent (net) overall energy of activation (in kJ/mol) of a given reaction?

Discussion

10.	The mass of sodium chloride in 2.5 M solution is
Answer» The mass of sodium chloride in 2.5 M solution is

Discussion

11.	If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:
Answer» If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:

Discussion

12.	At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A & 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?
Answer» At $300 K$ , the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is $600 t o r r$ . At the same temperature, if $1.5$ mol A & $0.5$ mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of $P_{B}^{\circ}$ ?

Discussion

13.	For the following conversion the correct sequence of reagents is:
Answer» For the following conversion the correct sequence of reagents is:

Discussion

14.	what is nef carbonyl synthesis? state its reagents and condition and mechanism
Answer» what is nef carbonyl synthesis? state its reagents and condition and mechanism

Discussion

15.	26.Among the following, the molecule of high dipole moment is (1) CCl4. (2)NH3. (3) H2O. (4)CHCl3
Answer» 26.Among the following, the molecule of high dipole moment is (1) CCl4. (2)NH3. (3) H2O. (4)CHCl3

Discussion

16.	5.6g of fe on treated with 5.6l of o2 at stp.how many maximum no.of moles of fe2o3 is formed?
Answer» 5.6g of fe on treated with 5.6l of o2 at stp.how many maximum no.of moles of fe2o3 is formed?

Discussion

17.	17. Q . For an alkaline aqueous solution is pH >pOH ?
Answer» 17. Q . For an alkaline aqueous solution is pH >pOH ?

Discussion

18.	Structure of NH4Cl
Answer» Structure of NH4Cl

Discussion

19.	which bond has greater energy sigma or pi bond?
Answer» which bond has greater energy sigma or pi bond?

Discussion

20.	What volume of gasses at STP will evolve if 1L of 0.01M solution of H2SO4 is electrolysed
Answer» What volume of gasses at STP will evolve if 1L of 0.01M solution of H2SO4 is electrolysed

Discussion

21.	The degree of dissociation of Calcium nitrate in dilute aqueous solution contain 7g of salt per 100g of water at 100°C is 70% . If vapour pressure of water at 100°C is 760mm of Hg . Calculate the vapour pressure of the solution .
Answer» The degree of dissociation of Calcium nitrate in dilute aqueous solution contain 7g of salt per 100g of water at 100°C is 70% . If vapour pressure of water at 100°C is 760mm of Hg . Calculate the vapour pressure of the solution .

Discussion

22.	Among the given metal cations which has highest negative hydration enthalpy?Options:a)Ti2+b)Co2+c)Cr2+d)V2+
Answer» Among the given metal cations which has highest negative hydration enthalpy? Options: a)Ti2+ b)Co2+ c)Cr2+ d)V2+

Discussion

23.	When 80 ml of ozonised oxygen was heated until no further change was observed and then cooled to have the same initial temperature and pressure, the volume measured was 95 ml. What would be the voume, if 40 ml of the mixture of O2 and O3 was exposed to oil of turpentine?
Answer» When 80 ml of ozonised oxygen was heated until no further change was observed and then cooled to have the same initial temperature and pressure, the volume measured was 95 ml. What would be the voume, if 40 ml of the mixture of O2 and O3 was exposed to oil of turpentine?

Discussion

24.	The correct sequence of the oxidation state of underlined elements is: NaB––H4, Na2P2–––O7, N3–––H
Answer» The correct sequence of the oxidation state of underlined elements is: $N a B - - H_{4}, N a_{2} P_{2} - - - O_{7}, N_{3} - - - H$

Discussion

25.	50.How many optical isomers are possible for(MABCD), where M is dsp2 hybridised?
Answer» 50.How many optical isomers are possible for(MABCD), where M is dsp2 hybridised?

Discussion

26.	What is the total n-factor for the reduction half reaction given below?Fe2(SO4)3⟶FeO+SO2
Answer» What is the total n-factor for the reduction half reaction given below? $F e_{2} (S O_{4})_{3} ⟶ F e O + S O_{2}$

Discussion

27.	What is lenz law? And explain it clearly
Answer» What is lenz law? And explain it clearly

Discussion

28.	We know that cathode itself is an electron donor then why we take the gas inside CRT to find the e/m ratio?
Answer» We know that cathode itself is an electron donor then why we take the gas inside CRT to find the e/m ratio?

Discussion

29.	when sno2 is added to naoh solution boiling point of the naoh solutio
Answer» when sno2 is added to naoh solution boiling point of the naoh solutio

Discussion

30.	Is density a tensor quantity?
Answer» Is density a tensor quantity?

Discussion

31.	The hydrogen bond is shortest in
Answer» The hydrogen bond is shortest in

Discussion

32.	40. The number of molecules in 4.25g of NH3 is approximately?
Answer» 40. The number of molecules in 4.25g of NH3 is approximately?

Discussion

33.	Which of the following has been arranged in the order of decreasing dipole moments?
Answer» Which of the following has been arranged in the order of decreasing dipole moments?

Discussion

34.	What is the dimesional formula of coefficient of viscocity?
Answer» What is the dimesional formula of coefficient of viscocity?

Discussion

35.	9.5×10−3% MgCl2 and 1.36×10−4% CaSO4 are present in water. What is the measured hardness of water in terms of CaCO3?(Given : molar mass of MgCl2 and CaSO4 are 95 and 136 g/mol respectively. )
Answer» $9.5 \times 10^{- 3} % M g C l_{2}$ and $1.36 \times 10^{- 4} % C a S O_{4}$ are present in water. What is the measured hardness of water in terms of $C a C O_{3}$ ? (Given : molar mass of $M g C l_{2} a n d C a S O_{4}$ are 95 and 136 g/mol respectively. )

Discussion

36.	'A' has fcc arrangement , 'B' is present in 2/3rd of tetrahedral void . what is the formula of the compound
Answer» 'A' has fcc arrangement , 'B' is present in 2/3rd of tetrahedral void . what is the formula of the compound

Discussion

37.	Anhydrous ferric chloride is prepared by:
Answer» Anhydrous ferric chloride is prepared by:

Discussion

38.	x+5/x+3
Answer» x+5/x+3<0

Discussion

39.	Which of the following contains propargylic group?
Answer» Which of the following contains propargylic group?

Discussion

40.	How many of the following can retard the decomposition of concentrated H202? Ethanol, Acetic acid,Ethylene glycol, Benzene, Sulphuric acid, Phosphoric acid
Answer» How many of the following can retard the decomposition of concentrated H202? Ethanol, Acetic acid,Ethylene glycol, Benzene, Sulphuric acid, Phosphoric acid

Discussion

41.	CH3-CH-CH2-Cl+ aq KOH------ product \| CH3Find the product.
Answer» CH3-CH-CH2-Cl+ aq KOH------ product \| CH3 Find the product.

Discussion

42.	Parabola of cathode ray equation
Answer» Parabola of cathode ray equation

Discussion

43.	relationship between force and potential energy
Answer» relationship between force and potential energy

Discussion

44.	The sublimation temperature of a substance is −83°C. It exist as cubic packed structure with unit cell edge length 5.0 Å and density 83 g/cm3, at −100°C. What should be density of substance at 0°C and 1 atm? (NA = 6 × 1023) (a) 50 g/cm3 (b) 2.23 g/cm3 (c) 2.23 g/l (d) 1.86 g/l
Answer» The sublimation temperature of a substance is −83°C. It exist as cubic packed structure with unit cell edge length 5.0 Å and density 8 3 g/cm3 , at −100°C. What should be density of substance at 0°C and 1 atm? (NA = 6 × 1023) (a) 50 g/cm3 (b) 2.23 g/cm3 (c) 2.23 g/l (d) 1.86 g/l

Discussion

45.	Temporary hardness of water can be removed by:
Answer» Temporary hardness of water can be removed by:

Discussion

46.	Most probable speed of a gas at 150 K is equal to the root mean square speed of O2 gas at 400 K. Molecular mass of the gas is.
Answer» Most probable speed of a gas at 150 K is equal to the root mean square speed of $O_{2}$ gas at 400 K. Molecular mass of the gas is.

Discussion

47.	Name the oxidizing agent and reducing agent in the following equation. 3MnO2(s) + 4Al(s) → 3Mn(s) + 2Al2O3(s)
Answer» Name the oxidizing agent and reducing agent in the following equation. $3 M n O_{2} (s)$ + $4 A l (s)$ $\to$ $3 M n (s)$ + $2 {A l}_{2} O_{3} (s)$

Discussion

48.	1L of N/2 HCl is heated in a beaker. It was detected that when the volume of solution was reduced to 600ml , 3.25g HCl is lost. Calculate final N of HCl
Answer» 1L of N/2 HCl is heated in a beaker. It was detected that when the volume of solution was reduced to 600ml , 3.25g HCl is lost. Calculate final N of HCl

Discussion

49.	Molar conductivity of a monobasic acid HA having molar concentration equal to C is λ and the limiting molar conductivity is λ∞. The dissociation constant of the acid is
Answer» Molar conductivity of a monobasic acid HA having molar concentration equal to $C$ is $λ$ and the limiting molar conductivity is $λ_{\infty}$ . The dissociation constant of the acid is

Discussion

50.	Calculate the valency factor of the following:(i) Ca → Ca2++ 2e−(ii)K → K+ + e−(iii) Mn7+ + 5e−→ Mn2+
Answer» Calculate the valency factor of the following: (i) Ca $\to$ ${C a}^{2 +}$ + 2 $e^{-}$ (ii)K $\to$ $K^{+}$ + $e^{-}$ (iii) ${M n}^{7 +}$ + 5 $e^{-}$ $\to$ ${M n}^{2 +}$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Arrange the following groups in the order of decreasing (-I) effect.

Magnetic moment of which ion is 2.88 BM ?

In the given reaction,4 Fe(s) + 302(g) → 2FE203(s)The entropy change and enthalpy change of reaction respectively are 800 J K-1 mol-1 and 1600 kJ/mole.What will be the temperature above which reaction will be spontaneous?

21. Compound on reaction with H2/Pd-BaSO4(one equivalent) give A → Na/NH3(l)(B) B is

An organic compound contains 1.6% of O atom. 1 molecule of the compound contains 2 atoms of O. The molecular mass of the compound is:

An alkene on heating with hot acidified KMNO4 gives succinic acid. The alkene is:

Value of CFSE, in tetrahedral complex having 3d4 configuration of metal ion, surrounded by weak field ligands, will be :-(1) - frac{2}{5}{Delta _t}(2) + frac{2}{5}{Delta _t}(3) - frac{4}{5}{Delta _t}(4) + frac{3}{5}{Delta _t

Which of the following orders is correct for heat of hydrogenation of these compounds?

The mass of sodium chloride in 2.5 M solution is

If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:

At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A &amp; 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?

For the following conversion the correct sequence of reagents is:

what is nef carbonyl synthesis? state its reagents and condition and mechanism

26.Among the following, the molecule of high dipole moment is (1) CCl4. (2)NH3. (3) H2O. (4)CHCl3

5.6g of fe on treated with 5.6l of o2 at stp.how many maximum no.of moles of fe2o3 is formed?

17. Q . For an alkaline aqueous solution is pH >pOH ?

Structure of NH4Cl

which bond has greater energy sigma or pi bond?

What volume of gasses at STP will evolve if 1L of 0.01M solution of H2SO4 is electrolysed

The degree of dissociation of Calcium nitrate in dilute aqueous solution contain 7g of salt per 100g of water at 100°C is 70% . If vapour pressure of water at 100°C is 760mm of Hg . Calculate the vapour pressure of the solution .

Among the given metal cations which has highest negative hydration enthalpy?Options:a)Ti2+b)Co2+c)Cr2+d)V2+

When 80 ml of ozonised oxygen was heated until no further change was observed and then cooled to have the same initial temperature and pressure, the volume measured was 95 ml. What would be the voume, if 40 ml of the mixture of O2 and O3 was exposed to oil of turpentine?

The correct sequence of the oxidation state of underlined elements is: NaB––H4, Na2P2–––O7, N3–––H

50.How many optical isomers are possible for(MABCD), where M is dsp2 hybridised?

What is the total n-factor for the reduction half reaction given below?Fe2(SO4)3⟶FeO+SO2

What is lenz law? And explain it clearly

We know that cathode itself is an electron donor then why we take the gas inside CRT to find the e/m ratio?

when sno2 is added to naoh solution boiling point of the naoh solutio

Is density a tensor quantity?

The hydrogen bond is shortest in

40. The number of molecules in 4.25g of NH3 is approximately?

Which of the following has been arranged in the order of decreasing dipole moments?

What is the dimesional formula of coefficient of viscocity?

9.5×10−3% MgCl2 and 1.36×10−4% CaSO4 are present in water. What is the measured hardness of water in terms of CaCO3?(Given : molar mass of MgCl2 and CaSO4 are 95 and 136 g/mol respectively. )

'A' has fcc arrangement , 'B' is present in 2/3rd of tetrahedral void . what is the formula of the compound

Anhydrous ferric chloride is prepared by:

x+5/x+3

Which of the following contains propargylic group?

How many of the following can retard the decomposition of concentrated H202? Ethanol, Acetic acid,Ethylene glycol, Benzene, Sulphuric acid, Phosphoric acid

CH3-CH-CH2-Cl+ aq KOH------ product | CH3Find the product.

Parabola of cathode ray equation

relationship between force and potential energy

The sublimation temperature of a substance is −83°C. It exist as cubic packed structure with unit cell edge length 5.0 Å and density 83 g/cm3, at −100°C. What should be density of substance at 0°C and 1 atm? (NA = 6 × 1023) (a) 50 g/cm3 (b) 2.23 g/cm3 (c) 2.23 g/l (d) 1.86 g/l

Temporary hardness of water can be removed by:

Most probable speed of a gas at 150 K is equal to the root mean square speed of O2 gas at 400 K. Molecular mass of the gas is.

Name the oxidizing agent and reducing agent in the following equation. 3MnO2(s) + 4Al(s) → 3Mn(s) + 2Al2O3(s)

1L of N/2 HCl is heated in a beaker. It was detected that when the volume of solution was reduced to 600ml , 3.25g HCl is lost. Calculate final N of HCl

Molar conductivity of a monobasic acid HA having molar concentration equal to C is λ and the limiting molar conductivity is λ∞. The dissociation constant of the acid is

Calculate the valency factor of the following:(i) Ca → Ca2++ 2e−(ii)K → K+ + e−(iii) Mn7+ + 5e−→ Mn2+

At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A & 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?