46295 + Interview Questions in Chemistry

1.	Decreasing order of acidic strength of different (-OH) groups is
Answer» Decreasing order of acidic strength of different (-OH) groups is

Discussion

2.	Among Al2O3,SiO2,P2O2 and SO2 the correct oredr of acid strength is
Answer» Among $A l_{2} O_{3}, S i O_{2}, P_{2} O_{2}$ and $S O_{2}$ the correct oredr of acid strength is

Discussion

3.	Increasing order of basic character of MgO, SrO, K2O, NiO and Cs2O
Answer» Increasing order of basic character of $M g O, S r O, K_{2} O, N i O and C s_{2} O$

Discussion

4.	What will be the hybridization for the given xenon compounds 1) XeF2 2) XeF4 3)XeF6 4) XeO3
Answer» What will be the hybridization for the given xenon compounds 1) XeF₂2) XeF₄3)XeF₆ 4) XeO₃

4.

What will be the hybridization for the given xenon compounds 1) XeF2 2) XeF4 3)XeF6 4) XeO3

Answer»

What will be the hybridization for the given xenon compounds

1) XeF₂2) XeF₄3)XeF₆ 4) XeO₃

Discussion

5.	What is the minimum number of elements in a reflexive relation defined on the set A = {a,c,d} ___
Answer» What is the minimum number of elements in a reflexive relation defined on the set A = {a,c,d} ___

Discussion

6.	(a) Write the cell reaction and calculate the e.m.f of the following cell at 298 K : Sn(s) Sn2+ (0.004 M) \|\| H+ (0.020 M) \| H2(g) (1 bar) \| Pt (s) (Given : E∘Sn2+/Sn = -0.14 V) (b) Give reasons : (i) On the basis of E∘ values, O2 gas should be liberated at anode but it is Cl2 gas which is liberated in the electrolysis of aqueous NaCl. (ii) Conductivity of CH3COOH decreases on dilution.
Answer» (a) Write the cell reaction and calculate the e.m.f of the following cell at 298 K : Sn(s) $S n^{2 +}$ (0.004 M) \|\| $H^{+}$ (0.020 M) \| $H_{2} (g)$ (1 bar) \| Pt (s) (Given : $E_{S n^{2 +} / S n}^{\circ}$ = -0.14 V) (b) Give reasons : (i) On the basis of $E^{\circ}$ values, $O_{2}$ gas should be liberated at anode but it is $C l_{2}$ gas which is liberated in the electrolysis of aqueous NaCl. (ii) Conductivity of $C H_{3} C O O H$ decreases on dilution.

Discussion

7.	What is the statement of rate law?
Answer» What is the statement of rate law?

Discussion

8.	For the non-zero values of forces of attraction between gas molecules and zero volume occupied by the gas molecules, Van der Waals equation will be:
Answer» For the non-zero values of forces of attraction between gas molecules and zero volume occupied by the gas molecules, Van der Waals equation will be:

Discussion

9.	What are the various energies found in a system
Answer» What are the various energies found in a system

Discussion

10.	The IUPAC name of the compound CH2=CH—C(Triple bonb) CH Is
Answer» The IUPAC name of the compound CH₂=CH—C(Triple bonb) CH Is

Discussion

11.	YOU ARE GIVEN 500ml OF 2N HCL AND 500ml OF 5N HCL. WHAT WILL BE THE MAXIMUM VOLUME OF 3M HCL THAT YOU CAN MAKE FROM THESE SOLUTION?
Answer» YOU ARE GIVEN 500ml OF 2N HCL AND 500ml OF 5N HCL. WHAT WILL BE THE MAXIMUM VOLUME OF 3M HCL THAT YOU CAN MAKE FROM THESE SOLUTION?

Discussion

12.	Which of the following statements is correct ? (a) The rate of reaction decreases with passage of time as the concentration of reactants decreases (b) The rate of reaction is same at any time during the reaction (c) The rate of a reaction is independent of temperature change (d) The rate of a reaction decreases with increase in concentration of reactant (s)
Answer» Which of the following statements is correct ? (a) The rate of reaction decreases with passage of time as the concentration of reactants decreases (b) The rate of reaction is same at any time during the reaction (c) The rate of a reaction is independent of temperature change (d) The rate of a reaction decreases with increase in concentration of reactant (s)

Discussion

13.	In sp3 hybridization how many atomic orbitals are involved?
Answer» In sp³ hybridization how many atomic orbitals are involved?

Discussion

14.	What is the reference taken for Relative atomic mass calculation for any element?
Answer» What is the reference taken for Relative atomic mass calculation for any element?

Discussion

15.	which amongst the following is a natural growth regulator?
Answer» which amongst the following is a natural growth regulator?

Discussion

16.	A small hole made at bottom of a hollow sphere. THe water enters into it when it is taken to a depht of 40cm under water. If the surface tension of water is. 07N/m..diameter of tge hole is?
Answer» A small hole made at bottom of a hollow sphere. THe water enters into it when it is taken to a depht of 40cm under water. If the surface tension of water is. 07N/m..diameter of tge hole is?

Discussion

17.	Which of the following is not a true “per acid”?
Answer» Which of the following is not a true “per acid”?

Discussion

18.	For which among the following species magnetic moment is √3 Bohr Magneton?
Answer» For which among the following species magnetic moment is $\sqrt{3}$ Bohr Magneton?

Discussion

19.	Calculate the amount of NH3 and NH4Cl required to prepare a buffer solution of pH = 9.0, when the total concentration of buffering reagents is 0.6 moles/L. Given pKb of NH3 = 4.7
Answer» Calculate the amount of $N H_{3}$ and $N H_{4} C l$ required to prepare a buffer solution of pH = 9.0, when the total concentration of buffering reagents is 0.6 moles/L. Given $p K_{b}$ of $N H_{3}$ = 4.7

Discussion

20.	If X is a nonmetal, its oxide X2O3 is expected to be a/an _____ oxide.
Answer» If X is a nonmetal, its oxide X₂O₃ is expected to be a/an _____ oxide.

Discussion

21.	Three elements A, B and C crystallize in an FCC lattice. Atoms A occupy the corners and the face centres whereas atoms B are present at the cube centres and C atoms at the edges centres. If the simple formula of the compound is AxByCz. What is the value of (x+y+z)?
Answer» Three elements A, B and C crystallize in an FCC lattice. Atoms A occupy the corners and the face centres whereas atoms B are present at the cube centres and C atoms at the edges centres. If the simple formula of the compound is $A_{x} B_{y} C_{z}$ . What is the value of $(x + y + z)$ ?

Discussion

22.	The osmotic pressure of a 0.010 M MgSO4 solution at 500 K is 0.82 atm. Calculate , the van't Hoff factor, for this MgSO4 solution.
Answer» The osmotic pressure of a 0.010 M MgSO₄ solution at 500 K is 0.82 atm. Calculate , the van't Hoff factor, for this MgSO₄ solution.

Discussion

23.	Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with and strong KOH) to furnish the primary amine [CBSE PMT 1989]
Answer» Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with and strong KOH) to furnish the primary amine [CBSE PMT 1989]

23.

Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with and strong KOH) to furnish the primary amine [CBSE PMT 1989]

Answer»

Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with and strong KOH) to furnish the primary amine

[CBSE PMT 1989]

Discussion

24.	QUESTION 14.3 Write two main functions of carbohydrates in plants.
Answer» QUESTION 14.3 Write two main functions of carbohydrates in plants.

24.

QUESTION 14.3 Write two main functions of carbohydrates in plants.

Answer»

QUESTION 14.3

Write two main functions of carbohydrates in plants.

Discussion

25.	What is disproportionation reaction?
Answer» What is disproportionation reaction?

Discussion

26.	What is the number of revolutions of an electron in second bohr orbit of hydrogen atom in one second
Answer» What is the number of revolutions of an electron in second bohr orbit of hydrogen atom in one second

Discussion

27.	What will happen if two different alkyl halides are taken
Answer» What will happen if two different alkyl halides are taken

Discussion

28.	Is there a difference between no.of electrons in chlorine atom chlorine radical..?? Are they same?
Answer» Is there a difference between no.of electrons in chlorine atom chlorine radical..?? Are they same?

Discussion

29.	Which of the follwoing is true for a catalyst?
Answer» Which of the follwoing is true for a catalyst?

Discussion

30.	How many electrons are there in 1 kg?
Answer» How many electrons are there in 1 kg?

Discussion

31.	What is the product formed when XeF4 reacts with SbF5?
Answer» What is the product formed when $X e F_{4}$ reacts with $S b F_{5}$ ?

Discussion

32.	If the dispersed phase is a liquid and the dispersion medium is a solid, the colloid is known as [NCERT 1981; CBSE PMT 1989; KCET 1998]
Answer» If the dispersed phase is a liquid and the dispersion medium is a solid, the colloid is known as [NCERT 1981; CBSE PMT 1989; KCET 1998]

32.

If the dispersed phase is a liquid and the dispersion medium is a solid, the colloid is known as [NCERT 1981; CBSE PMT 1989; KCET 1998]

Answer»

If the dispersed phase is a liquid and the dispersion medium is a solid, the

colloid is known as

[NCERT 1981; CBSE PMT 1989; KCET 1998]

Discussion

33.	An example of auto-catalytic reaction
Answer» An example of auto-catalytic reaction

Discussion

34.	Ethers are obtained by
Answer» Ethers are obtained by

Discussion

35.	Determine the heat of transformation of C(diamond)→ C(graphite) from the following data. C(diamond)+O2(g)→CO2(g) △H=−94.5Kcal C(graphite)+O2(g)→CO2(g) △H=−94.0Kcal
Answer» Determine the heat of transformation of C(diamond)→ C(graphite) from the following data. $C_{(d i a m o n d)} + O_{2} (g) \to C O_{2} (g) △ H = - 94.5 K c a l$ $C_{(g r a p h i t e)} + O_{2} (g) \to C O_{2} (g) △ H = - 94.0 K c a l$

Discussion

36.	What do you mean by ozone hole? What are its consequences?
Answer» What do you mean by ozone hole? What are its consequences?

Discussion

37.	How will I convert propene to propane_2_ol
Answer» How will I convert propene to propane_2_ol

Discussion

38.	The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = 1.60×10−19 C):
Answer» The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = $1.60 \times 10^{- 19} C$ ):

Discussion

39.	An ideal gas is taken through cycle A→B→C−A, as shown in figure. If the net heat supplied to the gas inthe cycle is 5J, the work done by the gas in the process C→A is
Answer» An ideal gas is taken through cycle $A \to B \to C - A$ , as shown in figure. If the net heat supplied to the gas inthe cycle is 5J, the work done by the gas in the process $C \to A$ is

39.

An ideal gas is taken through cycle A→B→C−A, as shown in figure. If the net heat supplied to the gas inthe cycle is 5J, the work done by the gas in the process C→A is

Answer»

An ideal gas is taken through cycle $A \to B \to C - A$ , as shown in figure. If the net heat supplied to the gas inthe cycle is 5J, the work done by the gas in the process $C \to A$ is

Discussion

40.	C2O2−4 is a weak ligand but acts as a strong ligand in K3[Co(C2O4)3] and induces the pairing of electrons against Hund's rule. Why?
Answer» $C_{2} O_{4}^{2 -}$ is a weak ligand but acts as a strong ligand in $K_{3} [C o (C_{2} O_{4})_{3}]$ and induces the pairing of electrons against Hund's rule. Why?

Discussion

41.	Step-I: 0.5 L of saturated Mg(OH)2 (aq.) is in contact with Mg(OH)2(s). Step-II: 0.5 L of H2O is added to 0.5 L of solution in step (I) and the solution is vigorously stirred, undissolved Mg(OH)2(s) remains. Step-III: 100 mL of the clear solution in step (II) is removed and added to 0.5 L of 0.1 M HCl(aq.). Step-IV: 25 mL of the clear solution in step (II) is removed and added to 225 mL of 0.06 M MgCl2(aq.) (Ksp,Mg(OH)2=3.2×10−11). Which of the following are correct choices about above steps?
Answer» Step-I: 0.5 L of saturated $M g (O H)_{2}$ (aq.) is in contact with $M g (O H)_{2}$ (s). Step-II: 0.5 L of $H_{2} O$ is added to 0.5 L of solution in step (I) and the solution is vigorously stirred, undissolved $M g (O H)_{2}$ (s) remains. Step-III: 100 mL of the clear solution in step (II) is removed and added to 0.5 L of 0.1 M $H C l$ (aq.). Step-IV: 25 mL of the clear solution in step (II) is removed and added to 225 mL of 0.06 M $M g C l_{2}$ (aq.) $(K_{s p}, M g (O H)_{2} = 3.2 \times 10^{- 11})$ . Which of the following are correct choices about above steps?

Discussion

42.	Energy involved to ionise O2(g) to O2−(g) is 639 kJ mol−1. If the ionisation enthalpy of O−(g) is 141 kJ mol−1. The second electron gain enthalpy of oxygen would be:
Answer» Energy involved to ionise $O_{2} (g)$ to $O^{2 -} (g)$ is $639 {kJ mol}^{- 1}$ . If the ionisation enthalpy of $O^{-} (g)$ is $141 {kJ mol}^{- 1}$ . The second electron gain enthalpy of oxygen would be:

Discussion

43.	Glucose & fructose are
Answer» Glucose & fructose are

Discussion

44.	Which ion has greatest radius in the following
Answer» Which ion has greatest radius in the following

44.

Which ion has greatest radius in the following

Answer»

Which ion has greatest radius in the following

Discussion

45.	An organic compound A reacts with methyl magnesium iodide to form an addition product, which on hydrolysis forms the compound B. Compound B gives blue coloured salt in Victor-Meyer test. The compounds A and B respectively are
Answer» An organic compound A reacts with methyl magnesium iodide to form an addition product, which on hydrolysis forms the compound B. Compound B gives blue coloured salt in Victor-Meyer test. The compounds A and B respectively are

Discussion

46.	A functional isomer of ethanol is?
Answer» A functional isomer of ethanol is?

Discussion

47.	Derive an expression to calculate time required for completion of zero order reaction.
Answer» Derive an expression to calculate time required for completion of zero order reaction.

Discussion

48.	C6H5O\|\|CCH3+OHCC6H5H+−−→C6H5−O\|\|C−CH2OH\|CHC6H5 The above aldol condensation does not involve the formation of
Answer» $C_{6} H_{5} O \| \| C C H_{3} + O H C C_{6} H_{5} H^{+} - - \to C_{6} H_{5} - O \| \| C - C H_{2} O H \| C H C_{6} H_{5}$ The above aldol condensation does not involve the formation of

48.

C6H5O||CCH3+OHCC6H5H+−−→C6H5−O||C−CH2OH|CHC6H5 The above aldol condensation does not involve the formation of

Answer»

$C_{6} H_{5} O | | C C H_{3} + O H C C_{6} H_{5} H^{+} - - \to C_{6} H_{5} - O | | C - C H_{2} O H | C H C_{6} H_{5}$

The above aldol condensation does not involve the formation of

Discussion

49.	Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?
Answer» Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?

Discussion

50.	The compressibility factor for H2 which behaves as a real gas is
Answer» The compressibility factor for $H_{2}$ which behaves as a real gas is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Decreasing order of acidic strength of different (-OH) groups is

Among Al2O3,SiO2,P2O2 and SO2 the correct oredr of acid strength is

Increasing order of basic character of MgO, SrO, K2O, NiO and Cs2O

What will be the hybridization for the given xenon compound​s 1) XeF2 2) XeF4 3)XeF6 4) XeO3

What is the minimum number of elements in a reflexive relation defined on the set A = {a,c,d} ___

What is the statement of rate law?

For the non-zero values of forces of attraction between gas molecules and zero volume occupied by the gas molecules, Van der Waals equation will be:

What are the various energies found in a system

The IUPAC name of the compound CH2=CH—C(Triple bonb) CH Is

YOU ARE GIVEN 500ml OF 2N HCL AND 500ml OF 5N HCL. WHAT WILL BE THE MAXIMUM VOLUME OF 3M HCL THAT YOU CAN MAKE FROM THESE SOLUTION?

In sp3 hybridization how many atomic orbitals are involved?

What is the reference taken for Relative atomic mass calculation for any element?

which amongst the following is a natural growth regulator?

A small hole made at bottom of a hollow sphere. THe water enters into it when it is taken to a depht of 40cm under water. If the surface tension of water is. 07N/m..diameter of tge hole is?

Which of the following is not a true “per acid”?

For which among the following species magnetic moment is √3 Bohr Magneton?

Calculate the amount of NH3 and NH4Cl required to prepare a buffer solution of pH = 9.0, when the total concentration of buffering reagents is 0.6 moles/L. Given pKb of NH3 = 4.7

If X is a nonmetal, its oxide X2O3 is expected to be a/an _____ oxide.

Three elements A, B and C crystallize in an FCC lattice. Atoms A occupy the corners and the face centres whereas atoms B are present at the cube centres and C atoms at the edges centres. If the simple formula of the compound is AxByCz. What is the value of (x+y+z)?

The osmotic pressure of a 0.010 M MgSO4 solution at 500 K is 0.82 atm. Calculate , the van't Hoff factor, for this MgSO4 solution.

Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with and strong KOH) to furnish the primary amine [CBSE PMT 1989]

QUESTION 14.3 Write two main functions of carbohydrates in plants.

What is disproportionation reaction?

What is the number of revolutions of an electron in second bohr orbit of hydrogen atom in one second

What will happen if two different alkyl halides are taken

Is there a difference between no.of electrons in chlorine atom chlorine radical..?? Are they same?

Which of the follwoing is true for a catalyst?

How many electrons are there in 1 kg?

What is the product formed when XeF4 reacts with SbF5?

If the dispersed phase is a liquid and the dispersion medium is a solid, the colloid is known as [NCERT 1981; CBSE PMT 1989; KCET 1998]

An example of auto-catalytic reaction

Ethers are obtained by

Determine the heat of transformation of C(diamond)→ C(graphite) from the following data. C(diamond)+O2(g)→CO2(g) △H=−94.5Kcal C(graphite)+O2(g)→CO2(g) △H=−94.0Kcal

What do you mean by ozone hole? What are its consequences?

How will I convert propene to propane_2_ol

The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = 1.60×10−19 C):

An ideal gas is taken through cycle A→B→C−A, as shown in figure. If the net heat supplied to the gas inthe cycle is 5J, the work done by the gas in the process C→A is

C2O2−4 is a weak ligand but acts as a strong ligand in K3[Co(C2O4)3] and induces the pairing of electrons against Hund's rule. Why?

Energy involved to ionise O2(g) to O2−(g) is 639 kJ mol−1. If the ionisation enthalpy of O−(g) is 141 kJ mol−1. The second electron gain enthalpy of oxygen would be:

Glucose &amp; fructose are

Which ion has greatest radius in the following

An organic compound A reacts with methyl magnesium iodide to form an addition product, which on hydrolysis forms the compound B. Compound B gives blue coloured salt in Victor-Meyer test. The compounds A and B respectively are

A functional isomer of ethanol is?

Derive an expression to calculate time required for completion of zero order reaction.

C6H5O||CCH3+OHCC6H5H+−−→C6H5−O||C−CH2OH|CHC6H5 The above aldol condensation does not involve the formation of

Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?

The compressibility factor for H2 which behaves as a real gas is

What will be the hybridization for the given xenon compounds 1) XeF2 2) XeF4 3)XeF6 4) XeO3

Glucose & fructose are