46295 + Interview Questions in Chemistry

1.	Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines. (i) (CH3)2 CHNH2 (ii) CH3(CH2)2NH2 (iii) CH3NHCH(CH3)2 (iv) (CH3)3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2)2NCH3 (vii) m−BrC6H4NH2
Answer» Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines. (i) (CH₃)₂CHNH₂(ii) CH₃(CH₂)₂NH₂ (iii) CH₃NHCH(CH₃)₂(iv) (CH₃)₃CNH₂ (v) C₆H₅NHCH₃ (vi) (CH₃CH₂)₂NCH₃ (vii) m−BrC₆H₄NH₂

1.

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines. (i) (CH3)2 CHNH2 (ii) CH3(CH2)2NH2 (iii) CH3NHCH(CH3)2 (iv) (CH3)3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2)2NCH3 (vii) m−BrC6H4NH2

Answer»

Write
IUPAC names of the following compounds and classify them into
primary,

secondary
and tertiary amines.

(i) (CH₃)₂CHNH₂(ii) CH₃(CH₂)₂NH₂

(iii) CH₃NHCH(CH₃)₂(iv)
(CH₃)₃CNH₂

(v)
C₆H₅NHCH₃
(vi) (CH₃CH₂)₂NCH₃

(vii)
m−BrC₆H₄NH₂

Discussion

2.	When lightning strikes the Earth, a large number of charge particles enter the Earth. Does it become a charged body due to this? Explain with reasons.
Answer» When lightning strikes the Earth, a large number of charge particles enter the Earth. Does it become a charged body due to this? Explain with reasons.

Discussion

3.	The fraction of total volume occupied by the atoms present in a simple cubic is
Answer» The fraction of total volume occupied by the atoms present in a simple cubic is

Discussion

4.	Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?
Answer» Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?

Discussion

5.	Which of the following represent the correct order of increasing IE1 for Ca, Ba, S, Se and Ar?
Answer» Which of the following represent the correct order of increasing $I E_{1}$ for Ca, Ba, S, Se and Ar?

Discussion

6.	When 0.1 mol CoCl3(NH3)5 is treated with excess of AgNO3, 0.2 mol of AgCl are obtained. The conductivity of solution will correspond to (a) 1:3 electrolyte (b) 1:2 electrolyte (c) 1:1 electrolyte (d) 3:1 electrolyte
Answer» When 0.1 mol $C o C l_{3} (N H_{3})_{5}$ is treated with excess of $A g N O_{3},$ 0.2 mol of AgCl are obtained. The conductivity of solution will correspond to (a) 1:3 electrolyte (b) 1:2 electrolyte (c) 1:1 electrolyte (d) 3:1 electrolyte

Discussion

7.	12. An organic compound of carbon, hydrogen andnitrogen contains these elements having masspercentage 66.67%, 7.41% and 25.92%respectively. Calculate empirical formula.
Answer» 12. An organic compound of carbon, hydrogen andnitrogen contains these elements having masspercentage 66.67%, 7.41% and 25.92%respectively. Calculate empirical formula.

Discussion

8.	Find the molality of a 8 M NaOH solution having a density of 1 g/mL.
Answer» Find the molality of a 8 M NaOH solution having a density of 1 g/mL.

Discussion

9.	Why does physisorption decrease with the increase of temperature?
Answer» Why does physisorption decrease with the increase of temperature?

Discussion

10.	4ab+2ab+7bc+ba−8cb−10ba+−9bca+24a2 is a ____.
Answer» $4 a b + 2 a b + 7 b c + b a - 8 c b - 10 b a + - 9 b c a + 24 a^{2}$ is a ____.

Discussion

11.	The degree of dissociation of 0.1 M CH3COOH will be equal to ... (Given Ka (CH3COOH) = 1 × 10–5)
Answer» The degree of dissociation of 0.1 M CH3COOH will be equal to ... (Given Ka (CH3COOH) = 1 × 10–5)

Discussion

12.	What will be the product of the following intramolecular Claisen condensation ?
Answer» What will be the product of the following intramolecular Claisen condensation ?

Discussion

13.	Calculate the work done when 5 moles of oxygen gas contracts isothermally from 85 L to 15 L against a constant pressure of 2 atm at 250C.
Answer» Calculate the work done when $5$ moles of oxygen gas contracts isothermally from $85 L$ to $15 L$ against a constant pressure of $2 a t m$ at $25^{0} C$ .

Discussion

14.	An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester formed will be
Answer» An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester formed will be

Discussion

15.	Question 03 At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ................ (a) less than the rate of crystallisation (b) greater than the rate of crystallisation (c) equal to the rate of crystallisation (d) zero
Answer» Question 03 At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ................ (a) less than the rate of crystallisation (b) greater than the rate of crystallisation (c) equal to the rate of crystallisation (d) zero

Discussion

16.	How much amount of NaCl should be added to 600 g of water (ρ=1.00g/mL) to decrease freezing point of water to −0.2 ∘C? (The freezing point depression constant for water = 2 K Kg mol−1
Answer» How much amount of NaCl should be added to 600 g of water $(ρ = 1.00 g / m L)$ to decrease freezing point of water to $- 0.2^{\circ} C$ ? (The freezing point depression constant for water = 2 K Kg $m o l^{- 1}$

Discussion

17.	What is difference between Nucleophilic addition and Nucleophilic substitution?
Answer» What is difference between Nucleophilic addition and Nucleophilic substitution?

Discussion

18.	Atomic number of Mn. Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamangetic? (a) [Co(NH3)6]3+ (b) [Mn(CN)6]3− (c) [Fe(CN)6]4− (d) [Fe(CN)6]3−
Answer» Atomic number of Mn. Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamangetic? (a) $[C o (N H_{3})_{6}]^{3 +}$ (b) $[M n (C N)_{6}]^{3 -}$ (c) $[F e (C N)_{6}]^{4 -}$ (d) $[F e (C N)_{6}]^{3 -}$

Discussion

19.	Calculate total heat capacity of 40 g triatomic nonlinear gas (M = 20 gm/mol). If it is subjected to a process such that pressure exerted is directly proportional to square of volume under normal conditions.
Answer» Calculate total heat capacity of 40 g triatomic nonlinear gas (M = 20 gm/mol). If it is subjected to a process such that pressure exerted is directly proportional to square of volume under normal conditions.

Discussion

20.	Identify the product in following reaction.
Answer» Identify the product in following reaction.

Discussion

21.	42.alkli metal and alkelin earth metal do not hydrolysed with water,then how these metal formed metal hydoxide?
Answer» 42.alkli metal and alkelin earth metal do not hydrolysed with water,then how these metal formed metal hydoxide?

Discussion

22.	How many bonds in XeOF4 possess an angle greater than 90∘ ?
Answer» How many bonds in $X e O F_{4}$ possess an angle greater than $90^{\circ}$ ?

Discussion

23.	Which of the following species is not aromatic?
Answer» Which of the following species is not aromatic?

Discussion

24.	6. During nucleophilic reactions of alcohol why is partial positive and negative charge not develpoed between carbon and oxygen It is always seen between oxygen and hydrogen like in the reaction of Alcohol and Grignard reagent
Answer» 6. During nucleophilic reactions of alcohol why is partial positive and negative charge not develpoed between carbon and oxygen It is always seen between oxygen and hydrogen like in the reaction of Alcohol and Grignard reagent

Discussion

25.	Total number of nodes = _____
Answer» Total number of nodes = _____

Discussion

26.	27. CH2=C=CH-CH2-CH2-OH \| COOHCH3 NAME IUPAC AND COMMON NAME
Answer» 27. CH2=C=CH-CH2-CH2-OH \| COOHCH3 NAME IUPAC AND COMMON NAME

Discussion

27.	Weight of 1 x 10 to the powee of 22 molecules of CuSO4.5H2O is ? (weight of cu =63.5 )
Answer» Weight of 1 x 10 to the powee of 22 molecules of CuSO4.5H2O is ? (weight of cu =63.5 )

Discussion

28.	describe about full of spctral paper and spectral line
Answer» describe about full of spctral paper and spectral line

Discussion

29.	How p-p back bonding explains bond energy of B-F in BF3
Answer» How p-p back bonding explains bond energy of B-F in BF3

Discussion

30.	What indicates that a chemical reaction has occurred?
Answer» What indicates that a chemical reaction has occurred?

Discussion

31.	An ___ can be defined as a non-ideal solution whose vapour composition is same as its liquid.
Answer» An ___ can be defined as a non-ideal solution whose vapour composition is same as its liquid.

Discussion

32.	Oxidation state of sulphur in sodium thiosulphate during the reaction of sodium thiosulphate and iodine
Answer» Oxidation state of sulphur in sodium thiosulphate during the reaction of sodium thiosulphate and iodine

Discussion

33.	What does Acetaldehyde on treatment with a few drops of concentrated H_2SO_4 give
Answer» What does Acetaldehyde on treatment with a few drops of concentrated H_2SO_4 give

Discussion

34.	Why simultaneously we cannot determine the position and speed of microscopic particles
Answer» Why simultaneously we cannot determine the position and speed of microscopic particles

Discussion

35.	In a hydrogen oxygen fuel cell, electricity is produced. In this process H2(g) is oxidised at anode and O2(g) reduced at cathode. Given : Cathode: O2(g)+2H2O(l)+4e−→4OH−(aq) Anode : H2(g)+2OH−(aq)→2H2O(l)+2e− 4.48 L of H2 at 1 atm and 273 K is oxidised in 9650 sec. If current produced in fuel cell, use for the deposition of Cu2+ in 1 L, 2 M CuSO4(aq) solution for 241.25 sec using Pt electrode. The pH of solution after electrolysis is:
Answer» In a hydrogen oxygen fuel cell, electricity is produced. In this process $H_{2} (g)$ is oxidised at anode and $O_{2} (g)$ reduced at cathode. Given : Cathode: $O_{2} (g) + 2 H_{2} O (l) + 4 e^{-} \to 4 O H^{-} (a q)$ Anode : $H_{2} (g) + 2 O H^{-} (a q) \to 2 H_{2} O (l) + 2 e^{-}$ $4.48 L$ of $H_{2}$ at $1 atm$ and $273 K$ is oxidised in $9650 sec$ . If current produced in fuel cell, use for the deposition of $C u^{2 +}$ in $1 L$ , $2 M C u S O_{4} (aq)$ solution for $241.25 sec$ using $P t$ electrode. The $p H$ of solution after electrolysis is:

Discussion

36.	the relative reactivity of following towards Br_2 in chloroform is- ch_2=ch-coch_3 , ch_2=ch-ch_3 ch_2=ch-och_3 ch_2=ch_2
Answer» the relative reactivity of following towards Br_2 in chloroform is- ch_2=ch-coch_3 , ch_2=ch-ch_3 ch_2=ch-och_3 ch_2=ch_2

Discussion

37.	Obtain by the method of dimensional analysis an expression for the surface tension of a liquid rising in a capillary tube .assume that surface tension depends on mass m of the liquid,pressure p of the liquid and radius r of the capillary tube. The constant K =12.
Answer» Obtain by the method of dimensional analysis an expression for the surface tension of a liquid rising in a capillary tube .assume that surface tension depends on mass m of the liquid,pressure p of the liquid and radius r of the capillary tube. The constant K =12.

Discussion

38.	Pthallic anhydride reaction with excess of grognard reagent
Answer» Pthallic anhydride reaction with excess of grognard reagent

Discussion

39.	39.The reaction of the benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel gives beta-phenyl ethylamine N-isobutylaniline. Benzyl amine. Aniline
Answer» 39.The reaction of the benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel gives beta-phenyl ethylamine N-isobutylaniline. Benzyl amine. Aniline

Discussion

40.	which has maximum Electronegativity for Xe a)XeF_2 b)XeF_4 c)XeF_3 d)equal in all
Answer» which has maximum Electronegativity for Xe a)XeF_2 b)XeF_4 c)XeF_3 d)equal in all

Discussion

41.	Which one of the following doesnot exist ?
Answer» Which one of the following doesnot exist ?

Discussion

42.	62. The rate constant for a first order reaction at 300^° C for which Ea is 35kcalpermol and frequency constant is 1.45×10*11 is
Answer» 62. The rate constant for a first order reaction at 300^° C for which Ea is 35kcalpermol and frequency constant is 1.45×10*11 is

Discussion

43.	Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.
Answer» Nitric oxide reacts with Br₂ and gives nitrosyl bromide as per reaction given below: When 0.087 mol of NO and 0.0437 mol of Br₂ are mixed in a closed container at constant temperature, 0.0518 mol of NOBr is obtained at equilibrium. Calculate equilibrium amount of NO and Br₂.

43.

Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.

Answer»

Nitric
oxide reacts with Br₂
and gives nitrosyl bromide as per reaction given below:

When
0.087 mol of NO and 0.0437 mol of Br₂
are mixed in a closed container at constant temperature, 0.0518 mol
of NOBr is obtained at equilibrium. Calculate equilibrium amount of
NO and Br₂.

Discussion

44.	How many number of moles of C-atom will be present in 0.5moles of Carbon dioxide
Answer» How many number of moles of C-atom will be present in 0.5moles of Carbon dioxide

Discussion

45.	Equilibrium constant of a reversible reaction:
Answer» Equilibrium constant of a reversible reaction:

Discussion

46.	Mass of 25% (w/w) HCI solution required to decompose 50 g CaCO3 i s(1) 36.5 x 2 g(2) 36.5 g(3) 36.5 x 0.5 g(4) 36.5x 4 g
Answer» Mass of 25% (w/w) HCI solution required to decompose 50 g CaCO3 i s(1) 36.5 x 2 g(2) 36.5 g(3) 36.5 x 0.5 g(4) 36.5x 4 g

Discussion

47.	Which of the following has coordinate bond?
Answer» Which of the following has coordinate bond?

Discussion

48.	Which is more acidic ortho-chlorophenol or para-chlorophenol?
Answer» Which is more acidic ortho-chlorophenol or para-chlorophenol?

Discussion

49.	5 g of oleum is diluted with water. The solution required 409 mL of 0.15 M Ca(OH)2 for complete neutralization. Find the percentage of free SO3 in the sample.
Answer» 5 g of oleum is diluted with water. The solution required 409 mL of 0.15 M $C a (O H)_{2}$ for complete neutralization. Find the percentage of free $S O_{3}$ in the sample.

Discussion

50.	A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.
Answer» A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines. (i) (CH3)2 CHNH2 (ii) CH3(CH2)2NH2 (iii) CH3NHCH(CH3)2 (iv) (CH3)3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2)2NCH3 (vii) m−BrC6H4NH2

When lightning strikes the Earth, a large number of charge particles enter the Earth. Does it become a charged body due to this? Explain with reasons.

The fraction of total volume occupied by the atoms present in a simple cubic is

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?

Which of the following represent the correct order of increasing IE1 for Ca, Ba, S, Se and Ar?

When 0.1 mol CoCl3(NH3)5 is treated with excess of AgNO3, 0.2 mol of AgCl are obtained. The conductivity of solution will correspond to (a) 1:3 electrolyte (b) 1:2 electrolyte (c) 1:1 electrolyte (d) 3:1 electrolyte

12. An organic compound of carbon, hydrogen andnitrogen contains these elements having masspercentage 66.67%, 7.41% and 25.92%respectively. Calculate empirical formula.

Find the molality of a 8 M NaOH solution having a density of 1 g/mL.

Why does physisorption decrease with the increase of temperature?

4ab+2ab+7bc+ba−8cb−10ba+−9bca+24a2 is a ____.

The degree of dissociation of 0.1 M CH3COOH will be equal to ... (Given Ka (CH3COOH) = 1 × 10–5)

What will be the product of the following intramolecular Claisen condensation ?

Calculate the work done when 5 moles of oxygen gas contracts isothermally from 85 L to 15 L against a constant pressure of 2 atm at 250C.

An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester formed will be

Question 03 At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ................ (a) less than the rate of crystallisation (b) greater than the rate of crystallisation (c) equal to the rate of crystallisation (d) zero

How much amount of NaCl should be added to 600 g of water (ρ=1.00g/mL) to decrease freezing point of water to −0.2 ∘C? (The freezing point depression constant for water = 2 K Kg mol−1

What is difference between Nucleophilic addition and Nucleophilic substitution?

Atomic number of Mn. Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamangetic? (a) [Co(NH3)6]3+ (b) [Mn(CN)6]3− (c) [Fe(CN)6]4− (d) [Fe(CN)6]3−

Calculate total heat capacity of 40 g triatomic nonlinear gas (M = 20 gm/mol). If it is subjected to a process such that pressure exerted is directly proportional to square of volume under normal conditions.

Identify the product in following reaction.

42.alkli metal and alkelin earth metal do not hydrolysed with water,then how these metal formed metal hydoxide?

How many bonds in XeOF4 possess an angle greater than 90∘ ?

Which of the following species is not aromatic?

6. During nucleophilic reactions of alcohol why is partial positive and negative charge not develpoed between carbon and oxygen It is always seen between oxygen and hydrogen like in the reaction of Alcohol and Grignard reagent

Total number of nodes = _____

27. CH2=C=CH-CH2-CH2-OH | COOHCH3 NAME IUPAC AND COMMON NAME

Weight of 1 x 10 to the powee of 22 molecules of CuSO4.5H2O is ? (weight of cu =63.5 )

describe about full of spctral paper and spectral line

How p-p back bonding explains bond energy of B-F in BF3

What indicates that a chemical reaction has occurred?

An ___ can be defined as a non-ideal solution whose vapour composition is same as its liquid.

Oxidation state of sulphur in sodium thiosulphate during the reaction of sodium thiosulphate and iodine

What does Acetaldehyde on treatment with a few drops of concentrated H_2SO_4 give

Why simultaneously we cannot determine the position and speed of microscopic particles

the relative reactivity of following towards Br_2 in chloroform is- ch_2=ch-coch_3 , ch_2=ch-ch_3 ch_2=ch-och_3 ch_2=ch_2

Obtain by the method of dimensional analysis an expression for the surface tension of a liquid rising in a capillary tube .assume that surface tension depends on mass m of the liquid,pressure p of the liquid and radius r of the capillary tube. The constant K =12.

Pthallic anhydride reaction with excess of grognard reagent

39.The reaction of the benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel gives beta-phenyl ethylamine N-isobutylaniline. Benzyl amine. Aniline

which has maximum Electronegativity for Xe a)XeF_2 b)XeF_4 c)XeF_3 d)equal in all

Which one of the following doesnot exist ?

62. The rate constant for a first order reaction at 300^° C for which Ea is 35kcalpermol and frequency constant is 1.45×10*11 is

Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.

How many number of moles of C-atom will be present in 0.5moles of Carbon dioxide

Equilibrium constant of a reversible reaction:

Mass of 25% (w/w) HCI solution required to decompose 50 g CaCO3 i s(1) 36.5 x 2 g(2) 36.5 g(3) 36.5 x 0.5 g(4) 36.5x 4 g

Which of the following has coordinate bond?

Which is more acidic ortho-chlorophenol or para-chlorophenol?

5 g of oleum is diluted with water. The solution required 409 mL of 0.15 M Ca(OH)2 for complete neutralization. Find the percentage of free SO3 in the sample.

A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.