46295 + Interview Questions in Chemistry

1.	Rate law cannot be determined from balanced chemical equation if..... (a) reverse reaction is involved (b) it is an elementary reaction (c) it is a sequence of elementary reactions (d) any of the reactants is in excess
Answer» Rate law cannot be determined from balanced chemical equation if..... (a) reverse reaction is involved (b) it is an elementary reaction (c) it is a sequence of elementary reactions (d) any of the reactants is in excess

Discussion

2.	The primary structure of a protein molecule has (a) two ends (b) one end (c) three ends (d) no ends
Answer» The primary structure of a protein molecule has (a) two ends (b) one end (c) three ends (d) no ends

2.

The primary structure of a protein molecule has (a) two ends (b) one end (c) three ends (d) no ends

Answer»

The primary structure of a protein molecule has

(a) two ends (b) one end (c) three ends (d) no ends

Discussion

3.	Which is Incorrect statement?
Answer» Which is Incorrect statement?

Discussion

4.	Why electronegativity is inversely proportional to the radius and why it is said that more the s character more is electronegativity?
Answer» Why electronegativity is inversely proportional to the radius and why it is said that more the s character more is electronegativity?

Discussion

5.	Why colligative properties depend on the nature of solvent.and here what does nature mean, is it abt being polar or non polar
Answer» Why colligative properties depend on the nature of solvent.and here what does nature mean, is it abt being polar or non polar

Discussion

6.	Explain heat of atomization with example?
Answer» Explain heat of atomization with example?

Discussion

7.	The enthalpies of combustion of carbon and carbon monoxide are −393.5 and −283 kJ mol−1 respectively. The enthalpy of formation of carbon monoxide per mole is
Answer» The enthalpies of combustion of carbon and carbon monoxide are $- 393.5$ and $- 283 k J m o l^{- 1}$ respectively. The enthalpy of formation of carbon monoxide per mole is

Discussion

8.	In the reaction of CH2−CH2−CCl2−CH3X−→CH3−C≡C−CH3 the reagent 'X' is
Answer» In the reaction of $C H_{2} - C H_{2} - C C l_{2} - C H_{3} X - \to C H_{3} - C \equiv C - C H_{3}$ the reagent 'X' is

Discussion

9.	Difference between undefined and indeterminate ? Explain elaborately
Answer» Difference between undefined and indeterminate ? Explain elaborately

Discussion

10.	P is a point inside a circle centered at O which does not coincide with the point O. How many chords can be drawn with P as the mid-point?
Answer» P is a point inside a circle centered at O which does not coincide with the point O. How many chords can be drawn with P as the mid-point?

Discussion

11.	The oxidation number of sulphur in S8, S2F2, H2S respectively, are
Answer» The oxidation number of sulphur in $S_{8}$ , $S_{2}$ $F_{2}$ , $H_{2} S$ respectively, are

Discussion

12.	In a solid AB having the NaCl structure, A atoms occupy the corners of cube unit cell. If all the face centred atoms along one of the axes are removed, then resultant stoichiometry of the solid is 1.AB2 2.A2B 3.A4B3 4.A3B4
Answer» In a solid AB having the NaCl structure, A atoms occupy the corners of cube unit cell. If all the face centred atoms along one of the axes are removed, then resultant stoichiometry of the solid is 1.AB2 2.A2B 3.A4B3 4.A3B4

12.

In a solid AB having the NaCl structure, A atoms occupy the corners of cube unit cell. If all the face centred atoms along one of the axes are removed, then resultant stoichiometry of the solid is 1.AB2 2.A2B 3.A4B3 4.A3B4

Answer»

In a solid AB having the NaCl structure, A atoms occupy the corners of cube unit cell. If all the face centred atoms along one of the axes are removed, then resultant stoichiometry of the solid is

1.AB2

2.A2B

3.A4B3

4.A3B4

Discussion

13.	If 50 mL of 0.1 M Ca(OH)2 solution is required to neutralize 25 mL of H3PO4 solution then what will be the strength of H3PO4 in g/L ?
Answer» If $50 m L$ of $0.1 M C a (O H)_{2}$ solution is required to neutralize $25 m L$ of $H_{3} P O_{4}$ solution then what will be the strength of $H_{3} P O_{4}$ in $g / L$ ?

Discussion

14.	H2SO4+CH3−CH2OH→CH2=CH2+H2O (Ethanol) What is the mechanism of this reaction?
Answer» $H_{2} S O_{4} + C H_{3} - C H_{2} O H \to C H_{2} = C H_{2} + H_{2} O$ (Ethanol) What is the mechanism of this reaction?

Discussion

15.	How is pH paper is used to detect acids and bases?
Answer» How is pH paper is used to detect acids and bases?

Discussion

16.	The van der Waals' equation for 0.5 mol gas is:
Answer» The van der Waals' equation for $0.5 mol$ gas is:

Discussion

17.	(IE)1 and (IE) 2 of Mg are 740,1540kJ mol-' calculate the percentage of Mg+ and Mg2+ if 1g of Mg absorbs 50.0KJ of energy.
Answer» (IE)1 and (IE) 2 of Mg are 740,1540kJ mol-' calculate the percentage of Mg⁺and Mg²⁺ if 1g of Mg absorbs 50.0KJ of energy.

Discussion

18.	Under the degree of unsaturation It is given that if DOU = 2 it ; isomer contain 1 ring and 1triple bond In above statement what is mean by ring and general information about it
Answer» Under the degree of unsaturation It is given that if DOU = 2 it ; isomer contain 1 ring and 1triple bond In above statement what is mean by ring and general information about it

Discussion

19.	Calculate density of CH4 gas at the temperature 27∘C and the pressure 2 bar (Molecular mass of CH4=16 g)
Answer» Calculate density of $C H_{4}$ gas at the temperature $27^{\circ} C$ and the pressure 2 bar (Molecular mass of $C H_{4} = 16 g$ )

Discussion

20.	Carboxylic acid doesnot give reactions of carbonyl group?
Answer» Carboxylic acid doesnot give reactions of carbonyl group?

Discussion

21.	If 9g of H2O is electrolysed completely with 50% current efficiency, then how much O2 will be formed at STP?
Answer» If 9g of H₂O is electrolysed completely with 50% current efficiency, then how much O2 will be formed at STP?

Discussion

22.	In halogen group which tendency works with increase in atomic number
Answer» In halogen group which tendency works with increase in atomic number

Discussion

23.	Schottky defect is observed in crystals when ..................... (a) some cations move from their lattice site to interstitial sites (b) equal number of cation and anions are missing from the lattice (c) some lattice sites are occupied by electrons (d) some impurity is present in the lattice
Answer» Schottky defect is observed in crystals when ..................... (a) some cations move from their lattice site to interstitial sites (b) equal number of cation and anions are missing from the lattice (c) some lattice sites are occupied by electrons (d) some impurity is present in the lattice

23.

Schottky defect is observed in crystals when ..................... (a) some cations move from their lattice site to interstitial sites (b) equal number of cation and anions are missing from the lattice (c) some lattice sites are occupied by electrons (d) some impurity is present in the lattice

Answer»

Schottky defect is observed in crystals when .....................

(a) some cations move from their lattice site to interstitial sites

(b) equal number of cation and anions are missing from the lattice

(c) some lattice sites are occupied by electrons

(d) some impurity is present in the lattice

Discussion

24.	(+) Mandelic acid has a specific rotation of +158∘ what would be the observed specific rotation of a mixture of 25 % (-) mandelic acid and 75 (+) mandelic acid ?
Answer» (+) Mandelic acid has a specific rotation of $+ 158^{\circ}$ what would be the observed specific rotation of a mixture of 25 $%$ (-) mandelic acid and 75 (+) mandelic acid ?

Discussion

25.	The number of atoms and g-atoms present in: i. 60 g carbon is ×1023 and respectively. ii. 224.4 g Cu is ×1023 and respectively. (Atomic Weight of C and Cu are 12 u and 63.6 u, respectively. Avogadro’s number = 6.02×1023)
Answer» The number of atoms and g-atoms present in: i. 60 g carbon is $\times 10^{23}$ and respectively. ii. 224.4 g $C u$ is $\times 10^{23}$ and respectively. (Atomic Weight of $C$ and $C u$ are 12 u and 63.6 u, respectively. Avogadro’s number = $6.02 \times 10^{23})$

Discussion

26.	The fraction 2436 in its simplest form is ____.
Answer» The fraction $\frac{24}{36}$ in its simplest form is ____.

Discussion

27.	A sub-shell of l has _____ angular nodes.
Answer» A sub-shell of $l$ has _____ angular nodes.

Discussion

28.	Which is always present in photochemical smog?
Answer» Which is always present in photochemical smog?

Discussion

29.	An element X(Atomic mass = 25) exists as X4 in benzene. 51 g of saturated solution of X in benzene was added to 50.0 g of pure benzene. The resulting solution showed a depression of freezing point of 0.55 K. Calculate the solubility of X per 100 g of benzene. (Kf for benzene = 5.5 K kg mol−1)___
Answer» An element X(Atomic mass = 25) exists as $X_{4}$ in benzene. 51 g of saturated solution of X in benzene was added to 50.0 g of pure benzene. The resulting solution showed a depression of freezing point of 0.55 K. Calculate the solubility of X per 100 g of benzene. $(K_{f}$ for benzene = 5.5 K kg $m o l^{- 1})$ ___

Discussion

30.	The Van der walls radii of O,N,Cl,F and Ne increases in the order. A. F, O, Ne, ClB. N, O, F, Ne, ClC.Ne, F, O, N, ClD. F, Cl, O, N, Ne
Answer» The Van der walls radii of $O, N, C l, F$ and $N e$ increases in the order. A. F, O, Ne, Cl B. N, O, F, Ne, Cl C.Ne, F, O, N, Cl D. F, Cl, O, N, Ne

30.

The Van der walls radii of O,N,Cl,F and Ne increases in the order. A. F, O, Ne, ClB. N, O, F, Ne, ClC.Ne, F, O, N, ClD. F, Cl, O, N, Ne

Answer»

The Van der walls radii of $O, N, C l, F$ and $N e$ increases in the order.

A. F, O, Ne, Cl
B. N, O, F, Ne, Cl
C.Ne, F, O, N, Cl
D. F, Cl, O, N, Ne

Discussion

31.	Which of the following is not an example of disproportionation reaction
Answer» Which of the following is not an example of disproportionation reaction

Discussion

32.	Select the equation for [B] at any time t in the following reaction. Let the initial concentration of A be [A0] and B and C be 0.
Answer» Select the equation for [B] at any time t in the following reaction. Let the initial concentration of A be $[A_{0}]$ and B and C be 0.

Discussion

33.	In which of the following compounds, +I group is present?
Answer» In which of the following compounds, +I group is present?

Discussion

34.	2.76g of silver carbonate (at mass of Ag = 108) on being heated strongly yields a residue
Answer» 2.76g of silver carbonate (at mass of Ag = 108) on being heated strongly yields a residue

Discussion

35.	When sodium fusion extract is acidified with acetic acid and lead acetate is added to it a black precipitate of lead sulphide indicates the presence of:
Answer» When sodium fusion extract is acidified with acetic acid and lead acetate is added to it a black precipitate of lead sulphide indicates the presence of:

Discussion

36.	Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?
Answer» Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

Discussion

37.	The translational kinetic energy of an ideal gas depends only on its:
Answer» The translational kinetic energy of an ideal gas depends only on its:

Discussion

38.	When MnO2 is fused with KOH a coloured compound is formed. The product and its colour are
Answer» When MnO₂ is fused with KOH a coloured compound is formed. The product and its colour are

Discussion

39.	The IUPAC Name for the compound CH3−CH=CH−CH2−C\|\|O−CH2−COOH is
Answer» The IUPAC Name for the compound $C H_{3} - C H = C H - C H_{2} - C \| \| O - C H_{2} - C O O H$ is

39.

The IUPAC Name for the compound CH3−CH=CH−CH2−C||O−CH2−COOH is

Answer»

The IUPAC Name for the compound

$C H_{3} - C H = C H - C H_{2} - C | | O - C H_{2} - C O O H$ is

Discussion

40.	H2O2 reduces MnO−4 ion to
Answer» $H_{2} O_{2}$ reduces $M n O_{4}^{-}$ ion to

Discussion

41.	Column 1, 2 and 3 contains starting material, formula of the product and structure of the product respectively. Column 1 Column 2 Column 3(I)NH4NO3Δ−→(i)H3PO3(P)Angular(II)White P4+alkali→(ii)N2O(Q)Tetrahedral(with one−OH)(III)Pb(NO3)2673K−−−→(iii)H3PO2(R)Tetrahedral(with two−OH)(IV)P2O3+H2O→(iv)N2O2(S)Linear The correct set in which highly unstable brown colored gas, which can be dimerised also is formed:
Answer» Column 1, 2 and 3 contains starting material, formula of the product and structure of the product respectively. $\begin{matrix} C o l u m n 1 & C o l u m n 2 & C o l u m n 3 (I) & N H_{4} N O_{3} Δ - \to & (i) & H_{3} P O_{3} & (P) & A n g u l a r (I I) & W h i t e P_{4} + a l k a l i \to & (i i) & N_{2} O & (Q) & T e t r a h e d r a l (w i t h o n e - O H) (I I I) & P b (N O_{3})_{2} 673 K - -- \to & (i i i) & H_{3} P O_{2} & (R) & T e t r a h e d r a l (w i t h t w o - O H) (I V) & P_{2} O_{3} + H_{2} O \to & (i v) & N_{2} O_{2} & (S) & L i n e a r \end{matrix}$ The correct set in which highly unstable brown colored gas, which can be dimerised also is formed:

Discussion

42.	A solution contains Na2CO3 and NaHCO3.10 ml of the solution requires 2.5 ml of 0.1M H2SO4 for neutralisation using phenolphthalein as an indicator. Methyl orange is added when further 2.5 ml of 0.2 M H2SO4 is required. The amount of NaHCO3 in one litre of the solution is
Answer» A solution contains $N a_{2} C O_{3} a n d N a H C O_{3}$ .10 ml of the solution requires 2.5 ml of 0.1M $H_{2} S O_{4}$ for neutralisation using phenolphthalein as an indicator. Methyl orange is added when further 2.5 ml of 0.2 M $H_{2} S O_{4}$ is required. The amount of $N a H C O_{3}$ in one litre of the solution is

Discussion

43.	Which of the following is major product in the given reaction
Answer» Which of the following is major product in the given reaction

Discussion

44.	All bonds in benzene are equal due to
Answer» All bonds in benzene are equal due to

44.

All bonds in benzene are equal due to

Answer»

All bonds in benzene are equal due to

Discussion

45.	Find oxidation state of N in HNO3
Answer» Find oxidation state of $N$ in $H N O_{3}$

Discussion

46.	Identify the enzymes catalysing reactions (A) and (B) (A)α-ketoglutarate + NH4+ + NADPH → Glutamate + H2O + NADP+ (B)R−CH−(COO)NH2+R1−(CO)COO → R−(CO)COO+R1−CH−(COO)NH2
Answer» Identify the enzymes catalysing reactions (A) and (B) (A) $α$ -ketoglutarate + ${N H}^{4 +}$ + NADPH $\to$ Glutamate + $H_{2} O$ + $N A D P^{+}$ (B) $R - C H - (C O O) N H_{2} + R_{1} - (C O) C O O \to R - (C O) C O O + R_{1} - C H - (C O O) N H_{2}$

46.

Identify the enzymes catalysing reactions (A) and (B) (A)α-ketoglutarate + NH4+ + NADPH → Glutamate + H2O + NADP+ (B)R−CH−(COO)NH2+R1−(CO)COO → R−(CO)COO+R1−CH−(COO)NH2

Answer»

Identify the enzymes catalysing reactions (A) and (B)

(A) $α$ -ketoglutarate + ${N H}^{4 +}$ + NADPH $\to$ Glutamate + $H_{2} O$ + $N A D P^{+}$

(B) $R - C H - (C O O) N H_{2} + R_{1} - (C O) C O O \to R - (C O) C O O + R_{1} - C H - (C O O) N H_{2}$

Discussion

47.	\(N_2 ~+ ~O_2 ~\rightleftharpoons~ 2NO ~+~ (-Qcals)\) In the above reaction which is the essential condition for the higher production of NO
Answer» \(N_2 ~+ ~O_2 ~\rightleftharpoons~ 2NO ~+~ (-Qcals)\) In the above reaction which is the essential condition for the higher production of $N O$

47.

$N_2 ~+ ~O_2 ~\rightleftharpoons~ 2NO ~+~ (-Qcals)$ In the above reaction which is the essential condition for the higher production of NO

Answer»

$N_2 ~+ ~O_2 ~\rightleftharpoons~ 2NO ~+~ (-Qcals)$

In the above reaction which is the essential condition for the higher production of $N O$

Discussion

48.	Which is an ore of potassium
Answer» Which is an ore of potassium

Discussion

49.	Which is/are correct statements? (3) This is only affected in reduction to 2∘ alcohol These bonds are affected in esterification
Answer» Which is/are correct statements? (3) This is only affected in reduction to $2^{\circ}$ alcohol These bonds are affected in esterification

Discussion

50.	In which of the following molecule is the covalent bond most polar
Answer» In which of the following molecule is the covalent bond most polar

50.

In which of the following molecule is the covalent bond most polar

Answer»

In which of the following molecule is the covalent bond most polar

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Rate law cannot be determined from balanced chemical equation if..... (a) reverse reaction is involved (b) it is an elementary reaction (c) it is a sequence of elementary reactions (d) any of the reactants is in excess

The primary structure of a protein molecule has (a) two ends (b) one end (c) three ends (d) no ends

Which is Incorrect statement?

Why electronegativity is inversely proportional to the radius and why it is said that more the s character more is electronegativity?

Why colligative properties depend on the nature of solvent.and here what does nature mean, is it abt being polar or non polar

Explain heat of atomization with example?

The enthalpies of combustion of carbon and carbon monoxide are −393.5 and −283 kJ mol−1 respectively. The enthalpy of formation of carbon monoxide per mole is

In the reaction of CH2−CH2−CCl2−CH3X−→CH3−C≡C−CH3 the reagent 'X' is

Difference between undefined and indeterminate ? Explain elaborately

P is a point inside a circle centered at O which does not coincide with the point O. How many chords can be drawn with P as the mid-point?

The oxidation number of sulphur in S8, S2F2, H2S respectively, are

In a solid AB having the NaCl structure, A atoms occupy the corners of cube unit cell. If all the face centred atoms along one of the axes are removed, then resultant stoichiometry of the solid is 1.AB2 2.A2B 3.A4B3 4.A3B4

If 50 mL of 0.1 M Ca(OH)2 solution is required to neutralize 25 mL of H3PO4 solution then what will be the strength of H3PO4 in g/L ?

H2SO4+CH3−CH2OH→CH2=CH2+H2O (Ethanol) What is the mechanism of this reaction?

How is pH paper is used to detect acids and bases?

The van der Waals' equation for 0.5 mol gas is:

(IE)1 and (IE) 2 of Mg are 740,1540kJ mol-' calculate the percentage of Mg+ and Mg2+ if 1g of Mg absorbs 50.0KJ of energy.

Under the degree of unsaturation It is given that if DOU = 2 it ; isomer contain 1 ring and 1triple bond In above statement what is mean by ring and general information about it

Calculate density of CH4 gas at the temperature 27∘C and the pressure 2 bar (Molecular mass of CH4=16 g)

Carboxylic acid doesnot give reactions of carbonyl group?

If 9g of H2O is electrolysed completely with 50% current efficiency, then how much O2 will be formed at STP?

In halogen group which tendency works with increase in atomic number

Schottky defect is observed in crystals when ..................... (a) some cations move from their lattice site to interstitial sites (b) equal number of cation and anions are missing from the lattice (c) some lattice sites are occupied by electrons (d) some impurity is present in the lattice

(+) Mandelic acid has a specific rotation of +158∘ what would be the observed specific rotation of a mixture of 25 % (-) mandelic acid and 75 (+) mandelic acid ?

The number of atoms and g-atoms present in: i. 60 g carbon is ×1023 and respectively. ii. 224.4 g Cu is ×1023 and respectively. (Atomic Weight of C and Cu are 12 u and 63.6 u, respectively. Avogadro’s number = 6.02×1023)

The fraction 2436 in its simplest form is ____.

A sub-shell of l has _____ angular nodes.

Which is always present in photochemical smog?

An element X(Atomic mass = 25) exists as X4 in benzene. 51 g of saturated solution of X in benzene was added to 50.0 g of pure benzene. The resulting solution showed a depression of freezing point of 0.55 K. Calculate the solubility of X per 100 g of benzene. (Kf for benzene = 5.5 K kg mol−1)___

The Van der walls radii of O,N,Cl,F and Ne increases in the order. A. F, O, Ne, ClB. N, O, F, Ne, ClC.Ne, F, O, N, ClD. F, Cl, O, N, Ne

Which of the following is not an example of disproportionation reaction

Select the equation for [B] at any time t in the following reaction. Let the initial concentration of A be [A0] and B and C be 0.

In which of the following compounds, +I group is present?

2.76g of silver carbonate (at mass of Ag = 108) on being heated strongly yields a residue

When sodium fusion extract is acidified with acetic acid and lead acetate is added to it a black precipitate of lead sulphide indicates the presence of:

Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

The translational kinetic energy of an ideal gas depends only on its:

When MnO2 is fused with KOH a coloured compound is formed. The product and its colour are

The IUPAC Name for the compound CH3−CH=CH−CH2−C||O−CH2−COOH is

H2O2 reduces MnO−4 ion to

A solution contains Na2CO3 and NaHCO3.10 ml of the solution requires 2.5 ml of 0.1M H2SO4 for neutralisation using phenolphthalein as an indicator. Methyl orange is added when further 2.5 ml of 0.2 M H2SO4 is required. The amount of NaHCO3 in one litre of the solution is

Which of the following is major product in the given reaction

All bonds in benzene are equal due to

Find oxidation state of N in HNO3

Identify the enzymes catalysing reactions (A) and (B) (A)α-ketoglutarate + NH4+ + NADPH → Glutamate + H2O + NADP+ (B)R−CH−(COO)NH2+R1−(CO)COO → R−(CO)COO+R1−CH−(COO)NH2

\(N_2 ~+ ~O_2 ~\rightleftharpoons~ 2NO ~+~ (-Qcals)\) In the above reaction which is the essential condition for the higher production of NO

Which is an ore of potassium

Which is/are correct statements? (3) This is only affected in reduction to 2∘ alcohol These bonds are affected in esterification

In which of the following molecule is the covalent bond most polar