46295 + Interview Questions in Chemistry

1.	28. Three atoms A,B and C crystallize in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centre as well as the corners of the cube and C atoms are present at the face centres of the cube. Now if all the atoms are removed from the two 4-fold axis and the one 2-fold axis passing through the cube,then the formula of the compound is 1)B7C2 2)AB2C7 3)ABC2 3)A5C2
Answer» 28. Three atoms A,B and C crystallize in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centre as well as the corners of the cube and C atoms are present at the face centres of the cube. Now if all the atoms are removed from the two 4-fold axis and the one 2-fold axis passing through the cube,then the formula of the compound is 1)B7C2 2)AB2C7 3)ABC2 3)A5C2

Discussion

2.	In the following reversible reaction 2SO2+O2 ⇌ 2SO3+ Q CalMost suitable condition for the higher production of SO3 is
Answer» In the following reversible reaction $2 S O_{2} + O_{2} ⇌ 2 S O_{3} + Q C a l$ Most suitable condition for the higher production of $S O_{3}$ is

2.

In the following reversible reaction 2SO2+O2 ⇌ 2SO3+ Q CalMost suitable condition for the higher production of SO3 is

Answer»

In the following reversible reaction $2 S O_{2} + O_{2} ⇌ 2 S O_{3} + Q C a l$

Most suitable condition for the higher production of $S O_{3}$ is

Discussion

3.	Mole of electrons present in 9 g of aluminium is a)0.33 b)4.33 c)1.33 d)2.6
Answer» Mole of electrons present in 9 g of aluminium is a)0.33 b)4.33 c)1.33 d)2.6

Discussion

4.	Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands )
Answer» Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands )

Discussion

5.	The Henry's law constant for the solubility of N2 gas in water at 298K is 1.0 x 105 atm. The mole fraction of N2 is 0.8. The number of moles of N2 from air dissolved in 10 moles of water at 298K and 5 atm pressure is
Answer» The Henry's law constant for the solubility of N₂ gas in water at 298K is 1.0 x 10⁵ atm. The mole fraction of N₂ is 0.8. The number of moles of N₂ from air dissolved in 10 moles of water at 298K and 5 atm pressure is

Discussion

6.	Question 50(a) Write the formula and draw electron dot structure of carbon tetrachloride(b) What is saponification? Write the reaction involved in this process.
Answer» Question 50 (a) Write the formula and draw electron dot structure of carbon tetrachloride (b) What is saponification? Write the reaction involved in this process.

Discussion

7.	76 We say that oxyacid of phosphorus are always sp3 hybridised than when we remove one water molecule from H3PO4 than meta phosphoric acid is formed which ih sp2 why ?
Answer» 76 We say that oxyacid of phosphorus are always sp3 hybridised than when we remove one water molecule from H3PO4 than meta phosphoric acid is formed which ih sp2 why ?

Discussion

8.	The total number of electrons having m = 0 in potassium atom is
Answer» The total number of electrons having m = 0 in potassium atom is

Discussion

9.	A+B+H2O→(NH4)HCO3NH4HCO3+NaCl→C+NH4ClNH4Cl+D→2NH3+2H2O+CaCl2Sum of the atoms present in one molecule of each of A, B, C and D
Answer» $A + B + H_{2} O \to (N H_{4}) H C O_{3} N H_{4} H C O_{3} + N a C l \to C + N H_{4} C l N H_{4} C l + D \to 2 N H_{3} + 2 H_{2} O + C a C l_{2}$ Sum of the atoms present in one molecule of each of $A, B, C and D$

Discussion

10.	24. What is the Minimum activation energy required for endothermic and exothermic reaction?
Answer» 24. What is the Minimum activation energy required for endothermic and exothermic reaction?

Discussion

11.	When haloalkane or alkyl halide with a β hydrogen is heated with alcoholic solution of KOH, elimination of a hydrogen atom from β carbon and halogen atom from α-carbon occurs as a result, alkene is formed as product. Since β hydrogen atom is involved in the elimination reaction, it is often called β elimination. P and Q are respectively.
Answer» When haloalkane or alkyl halide with a $β$ hydrogen is heated with alcoholic solution of KOH, elimination of a hydrogen atom from $β$ carbon and halogen atom from $α$ -carbon occurs as a result, alkene is formed as product. Since $β$ hydrogen atom is involved in the elimination reaction, it is often called $β$ elimination. P and Q are respectively.

Discussion

12.	Assertion: {\lbrack Cr(H2O)6\rbrack}^{3+ }is inner orbital complex Reason: H_2O is strong ligand generall
Answer» Assertion: {\lbrack Cr(H2O)6\rbrack}^{3+ }is inner orbital complex Reason: H_2O is strong ligand generall

Discussion

13.	Why biphenyl is aromatic pr yh huckel rule toh follow he nhi krti hai
Answer» Why biphenyl is aromatic pr yh huckel rule toh follow he nhi krti hai

Discussion

14.	The solution of is
Answer» The solution of is

14.

The solution of is

Answer»

The solution of is

Discussion

15.	why pentahalides are more covalent than trihalides in nitrogen fami
Answer» why pentahalides are more covalent than trihalides in nitrogen fami

Discussion

16.	Which of the following is correct expression for degree of dissociation?
Answer» Which of the following is correct expression for degree of dissociation?

Discussion

17.	Generally the Ionization enthalpy in a period increases but there are some exceptions, the one which is not an exception is
Answer» Generally the Ionization enthalpy in a period increases but there are some exceptions, the one which is not an exception is

Discussion

18.	Question 26Comment on the following statements:(a) Evaporation produces cooling.(b) Rate of evaporation of an aqueous solution decreases with increase in humidity.(c) Sponge though compressible is a solid.
Answer» Question 26 Comment on the following statements: (a) Evaporation produces cooling. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity. (c) Sponge though compressible is a solid.

Discussion

19.	Two concentric metallic shell of radii R and 2R are charged q and 2q respectively. Then then switch connections them is closed, the charge appearing on inner surface of larger shell
Answer» Two concentric metallic shell of radii R and 2R are charged q and 2q respectively. Then then switch connections them is closed, the charge appearing on inner surface of larger shell

Discussion

20.	Three difference between hypocotyl and epicotyl
Answer» Three difference between hypocotyl and epicotyl

Discussion

21.	31. Which of the following sodium compound / compounds are formed when an organic compound containing both nitrogen and sulphur are fused with sodium? 1. Cyanide and sulphide 2. Thiocyanate 3. Sulphite and cyanide 4. Nitrate and sulphide
Answer» 31. Which of the following sodium compound / compounds are formed when an organic compound containing both nitrogen and sulphur are fused with sodium? 1. Cyanide and sulphide 2. Thiocyanate 3. Sulphite and cyanide 4. Nitrate and sulphide

Discussion

22.	Mole fraction of the component A in vapour phase is x1 and the mole fraction of component A in liquid mixture is x2. The total vapour pressure of liquid mixture is.Here,p∘A= vapour pressure of pure Ap∘B= vapour pressure of pure B
Answer» Mole fraction of the component A in vapour phase is $x_{1}$ and the mole fraction of component A in liquid mixture is $x_{2}$ . The total vapour pressure of liquid mixture is. Here, $p_{A}^{\circ} =$ vapour pressure of pure A $p_{B}^{\circ} =$ vapour pressure of pure B

Discussion

23.	The equilibrium constant Kp( in atm) for the reaction is 2.46 at 7 atm and 300 K. A2(g)⇌B2(g)+C2(g)Calculate the average molar mass (in g/mol) of an equilibrium mixture.Given: Molar mass of A2,B2and C2 are 70,49 and 21 g/mol respectively.(Given R=0.082 L atm K−1mol−1,√0.1≈0.3
Answer» The equilibrium constant $K_{p}$ ( in atm) for the reaction is $2.46$ at $7$ atm and $300 K$ . $A_{2} (g) ⇌ B_{2} (g) + C_{2} (g)$ Calculate the average molar mass (in g/mol) of an equilibrium mixture. Given: Molar mass of $A_{2}, B_{2}$ and $C_{2}$ are $70, 49$ and $21 g/mol$ respectively. (Given $R = 0.082 {L atm K}^{- 1} {mol}^{- 1}, \sqrt{0.1} \approx 0.3$

Discussion

24.	So2 when it act as oxidizing agent then it reduce to for S^{-2}orS^0?
Answer» So2 when it act as oxidizing agent then it reduce to for S^{-2}orS^0?

Discussion

25.	A fixed mass of a gas is first heated isobarically to double the volume and then cooled isochorically to decrease the temperature back to the initial value . by what factor would the process of change of state been isothermal.
Answer» A fixed mass of a gas is first heated isobarically to double the volume and then cooled isochorically to decrease the temperature back to the initial value . by what factor would the process of change of state been isothermal.

Discussion

26.	Graph between conductivity and temperature for 1) metals 2) semiconductor 3)alloys like nichrome
Answer» Graph between conductivity and temperature for 1) metals 2) semiconductor 3)alloys like nichrome

Discussion

27.	52. Co-ordinate bond is considered as sigma bond or pi bond?
Answer» 52. Co-ordinate bond is considered as sigma bond or pi bond?

Discussion

28.	How to identify the gaussian surface
Answer» How to identify the gaussian surface

Discussion

29.	how to compare the boiling point among AsH3,SbH2,BiH2,NH
Answer» how to compare the boiling point among AsH3,SbH2,BiH2,NH

Discussion

30.	What are the sub shells present in 5th shell?
Answer» What are the sub shells present in 5th shell?

Discussion

31.	In the removal of temporary hardness of a sample containing Ca, what is the number of moles of Ca(OH)2 used per mole of Ca(HCO3)2 removed
Answer» In the removal of temporary hardness of a sample containing $C a$ , what is the number of moles of $C a (O H)_{2}$ used per mole of $C a (H C O 3)_{2}$ removed

Discussion

32.	A certain metal when irradiated with light (ν=3.2×1016 Hz) emits photoelectrons with twice kinetic energy of photoelectrons that are emitted when the same metal is irradiated by light (ν=2.0×1016 Hz). Calculate νo of electron.
Answer» A certain metal when irradiated with light $(ν = 3.2 \times 10^{16} Hz)$ emits photoelectrons with twice kinetic energy of photoelectrons that are emitted when the same metal is irradiated by light $(ν = 2.0 \times 10^{16} Hz)$ . Calculate $ν_{o}$ of electron.

Discussion

33.	The dipole moment of NaCl molecule is 8.5 D and its bond length is 2 oA. The percentage ionic character in this molecule will be:
Answer» The dipole moment of $N a C l$ molecule is $8.5 D$ and its bond length is $2 o A$ . The percentage ionic character in this molecule will be:

Discussion

34.	If number of close packed spheres is N,then number of Tetrahedral voids is 2N and number of Octahedral voids is N.Why is it so?
Answer» If number of close packed spheres is N, then number of Tetrahedral voids is 2N and number of Octahedral voids is N. Why is it so?

Discussion

35.	Out of NH3, PH3, AsH3 and SbH3 the most basic hydride is:
Answer» Out of NH₃, PH₃, AsH₃ and SbH₃ the most basic hydride is:

Discussion

36.	What is pH of the half-cell Pt\|H2(g)\|H+ if E∘H+\|H2=−0.0295 V
Answer» What is pH of the half-cell $P t \| H_{2} (g) \| H^{+}$ if $E_{H^{+} \| H_{2}}^{\circ} = - 0.0295 V$

Discussion

37.	The IUPAC name of NC − CH2 − CH\|CN−CH2−CN is
Answer» The IUPAC name of $N C - C H_{2} - C H \| C N - C H_{2} - C N$ is

Discussion

38.	What is the difference between electron affinity and electron gain enthalpy why are they opposite in signs and what is the order of electron gain enthalpy and electron affinity in these elements O,S,Se,Te,Po
Answer» What is the difference between electron affinity and electron gain enthalpy why are they opposite in signs and what is the order of electron gain enthalpy and electron affinity in these elements O,S,Se,Te,Po

Discussion

39.	8. Internal energy of a non-ideal gas depends on and how? (a)temperature (b)pressure (c)volume (d)all of these
Answer» 8. Internal energy of a non-ideal gas depends on and how? (a)temperature (b)pressure (c)volume (d)all of these

Discussion

40.	A system works under cyclic process as follows Heat absorbed during the process is
Answer» A system works under cyclic process as follows Heat absorbed during the process is

Discussion

41.	Which of the following electron transition in a hydrogen atom will require the largest amount of energy input?
Answer» Which of the following electron transition in a hydrogen atom will require the largest amount of energy input?

Discussion

42.	Given the polmers : A = Nylon ; B = Buna-S ; C=Polythene. Arrange these in increasing order of their intermolecular forces (lower to higher)
Answer» Given the polmers : A = Nylon ; B = Buna-S ; C=Polythene. Arrange these in increasing order of their intermolecular forces (lower to higher)

Discussion

43.	The number of functional isomers of 2-phenyl ethanol is?
Answer» The number of functional isomers of 2-phenyl ethanol is?

Discussion

44.	What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F– (ii) Ar (iii) Mg2+ (iv) Rb+
Answer» What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F^– (ii) Ar (iii) Mg²⁺ (iv) Rb⁺

44.

What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F– (ii) Ar (iii) Mg2+ (iv) Rb+

Answer»

What do you understand
by isoelectronic species? Name a species that will be

isoelectronic with each
of the following atoms or ions.

(i) F^–

(ii) Ar

(iii) Mg²⁺

(iv) Rb⁺

Discussion

45.	42. A glucose solution having strength of 18g/l is isotonic with an aqueous NaCl solution.The strength of NaCl (ing/l)is? 1.35 2.93 5.85 8.4
Answer» 42. A glucose solution having strength of 18g/l is isotonic with an aqueous NaCl solution.The strength of NaCl (ing/l)is? 1.35 2.93 5.85 8.4

Discussion

46.	Which of the following is an example of liquid dishwashing detergent? a) CH3(CH2)10−CH2OSO−3Na+ b) c) d)
Answer» Which of the following is an example of liquid dishwashing detergent? a) $C H_{3} (C H_{2})_{10} - C H_{2} O S O_{3}^{-} N a^{+}$ b) c) d)

46.

Which of the following is an example of liquid dishwashing detergent? a) CH3(CH2)10−CH2OSO−3Na+ b) c) d)

Answer»

Which of the following is an example of liquid dishwashing detergent?
a) $C H_{3} (C H_{2})_{10} - C H_{2} O S O_{3}^{-} N a^{+}$

b)

c)

d)

Discussion

47.	How many carbons will be there in a sp3 hybridised carbon
Answer» How many carbons will be there in a sp³^{hybridised carbon}

Discussion

48.	A blue solid A is formed when a brown gas B is mixed with a colourless gas C. Identify A.
Answer» A blue solid $A$ is formed when a brown gas $B$ is mixed with a colourless gas $C$ . Identify $A$ .

Discussion

49.	In XeF2, Xe is ................. hybridised
Answer» In $X e F_{2},$ Xe is ................. hybridised

Discussion

50.	5. 380ml of H2 gas is collected over water at 300K under 755mm Hg pressure. What is the volume of dry hydrogen gas at STP? an tension at 300k us 15mm Hg
Answer» 5. 380ml of H2 gas is collected over water at 300K under 755mm Hg pressure. What is the volume of dry hydrogen gas at STP? an tension at 300k us 15mm Hg

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In the following reversible reaction 2SO2+O2 ⇌ 2SO3+ Q CalMost suitable condition for the higher production of SO3 is

Mole of electrons present in 9 g of aluminium is a)0.33 b)4.33 c)1.33 d)2.6

Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands )

The Henry's law constant for the solubility of N2 gas in water at 298K is 1.0 x 105 atm. The mole fraction of N2 is 0.8. The number of moles of N2 from air dissolved in 10 moles of water at 298K and 5 atm pressure is

Question 50(a) Write the formula and draw electron dot structure of carbon tetrachloride(b) What is saponification? Write the reaction involved in this process.

76 We say that oxyacid of phosphorus are always sp3 hybridised than when we remove one water molecule from H3PO4 than meta phosphoric acid is formed which ih sp2 why ?

The total number of electrons having m = 0 in potassium atom is

A+B+H2O→(NH4)HCO3NH4HCO3+NaCl→C+NH4ClNH4Cl+D→2NH3+2H2O+CaCl2Sum of the atoms present in one molecule of each of A, B, C and D

24. What is the Minimum activation energy required for endothermic and exothermic reaction?

Assertion: {\lbrack Cr(H2O)6\rbrack}^{3+ }is inner orbital complex Reason: H_2O is strong ligand generall

Why biphenyl is aromatic pr yh huckel rule toh follow he nhi krti hai

The solution of is

why pentahalides are more covalent than trihalides in nitrogen fami

Which of the following is correct expression for degree of dissociation?

Generally the Ionization enthalpy in a period increases but there are some exceptions, the one which is not an exception is

Question 26Comment on the following statements:(a) Evaporation produces cooling.(b) Rate of evaporation of an aqueous solution decreases with increase in humidity.(c) Sponge though compressible is a solid.

Two concentric metallic shell of radii R and 2R are charged q and 2q respectively. Then then switch connections them is closed, the charge appearing on inner surface of larger shell

Three difference between hypocotyl and epicotyl

31. Which of the following sodium compound / compounds are formed when an organic compound containing both nitrogen and sulphur are fused with sodium? 1. Cyanide and sulphide 2. Thiocyanate 3. Sulphite and cyanide 4. Nitrate and sulphide

Mole fraction of the component A in vapour phase is x1 and the mole fraction of component A in liquid mixture is x2. The total vapour pressure of liquid mixture is.Here,p∘A= vapour pressure of pure Ap∘B= vapour pressure of pure B

The equilibrium constant Kp( in atm) for the reaction is 2.46 at 7 atm and 300 K. A2(g)⇌B2(g)+C2(g)Calculate the average molar mass (in g/mol) of an equilibrium mixture.Given: Molar mass of A2,B2and C2 are 70,49 and 21 g/mol respectively.(Given R=0.082 L atm K−1mol−1,√0.1≈0.3

So2 when it act as oxidizing agent then it reduce to for S^{-2}orS^0?

A fixed mass of a gas is first heated isobarically to double the volume and then cooled isochorically to decrease the temperature back to the initial value . by what factor would the process of change of state been isothermal.

Graph between conductivity and temperature for 1) metals 2) semiconductor 3)alloys like nichrome

52. Co-ordinate bond is considered as sigma bond or pi bond?

How to identify the gaussian surface

how to compare the boiling point among AsH3,SbH2,BiH2,NH

What are the sub shells present in 5th shell?

In the removal of temporary hardness of a sample containing Ca, what is the number of moles of Ca(OH)2 used per mole of Ca(HCO3)2 removed

A certain metal when irradiated with light (ν=3.2×1016 Hz) emits photoelectrons with twice kinetic energy of photoelectrons that are emitted when the same metal is irradiated by light (ν=2.0×1016 Hz). Calculate νo of electron.

The dipole moment of NaCl molecule is 8.5 D and its bond length is 2 oA. The percentage ionic character in this molecule will be:

If number of close packed spheres is N,then number of Tetrahedral voids is 2N and number of Octahedral voids is N.Why is it so?

Out of NH3, PH3, AsH3 and SbH3 the most basic hydride is:

What is pH of the half-cell Pt|H2(g)|H+ if E∘H+|H2=−0.0295 V

The IUPAC name of NC − CH2 − CH|CN−CH2−CN is

What is the difference between electron affinity and electron gain enthalpy why are they opposite in signs and what is the order of electron gain enthalpy and electron affinity in these elements O,S,Se,Te,Po

8. Internal energy of a non-ideal gas depends on and how? (a)temperature (b)pressure (c)volume (d)all of these

A system works under cyclic process as follows Heat absorbed during the process is

Which of the following electron transition in a hydrogen atom will require the largest amount of energy input?

Given the polmers : A = Nylon ; B = Buna-S ; C=Polythene. Arrange these in increasing order of their intermolecular forces (lower to higher)

The number of functional isomers of 2-phenyl ethanol is?

What do you understand by isoelectronic species? Name a species that will be isoelectronic with each of the following atoms or ions. (i) F– (ii) Ar (iii) Mg2+ (iv) Rb+

42. A glucose solution having strength of 18g/l is isotonic with an aqueous NaCl solution.The strength of NaCl (ing/l)is? 1.35 2.93 5.85 8.4

Which of the following is an example of liquid dishwashing detergent? a) CH3(CH2)10−CH2OSO−3Na+ b) c) d)

How many carbons will be there in a sp​​​​​3 hybridised carbon

A blue solid A is formed when a brown gas B is mixed with a colourless gas C. Identify A.

In XeF2, Xe is ................. hybridised

5. 380ml of H2 gas is collected over water at 300K under 755mm Hg pressure. What is the volume of dry hydrogen gas at STP? an tension at 300k us 15mm Hg

How many carbons will be there in a sp3 hybridised carbon