46295 + Interview Questions in Chemistry

1.	IUPAC name of (CH3)2CH - N(CH3)2 is
Answer» IUPAC name of (CH₃)₂CH - N(CH₃)₂is

Discussion

2.	Which of the following compound has higher enol content?
Answer» Which of the following compound has higher enol content?

Discussion

3.	Why is the plastics callled fibres
Answer» Why is the plastics callled fibres

Discussion

4.	Which of the following is not an alloy?
Answer» Which of the following is not an alloy?

Discussion

5.	Consider the standard reduction potential (in volts) as shown in figure. Find Eo.
Answer» Consider the standard reduction potential (in volts) as shown in figure. Find $E^{o}$ .

Discussion

6.	CH3CH(CH3)C2CH3 in presence of Cl2 → A The compound "A" is
Answer» CH3CH(CH3)C2CH3 in presence of Cl2 → A The compound "A" is

Discussion

7.	For the reaction 2NO(g)+2H2(g)→N2(g)+2H2O(g)The rate expression can be written in the following waysd[N2]dt=k1[NO][H2]d[H2O]dt=k[NO][H2]−d[NO]dt=k′1[NO][H2]−d[H2]dt=k′′1[NO][H2]The relationship between k,k1,k′1 and k′′1:
Answer» For the reaction $2 N O (g) + 2 H_{2} (g) \to N_{2} (g) + 2 H_{2} O (g)$ The rate expression can be written in the following ways $\frac{d [N_{2}]}{d t} = k_{1} [N O] [H_{2}] \frac{d [H_{2} O]}{d t} = k [N O] [H_{2}] - \frac{d [N O]}{d t} = k_{1}^{'} [N O] [H_{2}] - \frac{d [H_{2}]}{d t} = k_{1}^{''} [N O] [H_{2}]$ The relationship between $k, k_{1}, k_{1}^{'}$ and $k_{1}^{''}$ :

Discussion

8.	Thyroxine, a hormone produced in the thyroid gland in humans, contains:
Answer» Thyroxine, a hormone produced in the thyroid gland in humans, contains:

Discussion

9.	Which of the following will show tautomerism?
Answer» Which of the following will show tautomerism?

Discussion

10.	When light of wavelength ′λ′ falls on the surface of a metal with threshold wavelength ′λ′0, an electron of mass 'm' is emitted. The de Broglie wavelength of emitted electron is:
Answer» When light of wavelength $^{'} λ^{'}$ falls on the surface of a metal with threshold wavelength $^{'} λ_{0}^{'}$ , an electron of mass 'm' is emitted. The de Broglie wavelength of emitted electron is:

Discussion

11.	Equivalent mass of H3PO4 for the given,H3PO4+Ca(OH)2------CaHPO4+2H2O is
Answer» Equivalent mass of H3PO4 for the given,H3PO4+Ca(OH)2------CaHPO4+2H2O is

Discussion

12.	The phenomenon of existence of two or more compounds possessing the same molecular formulae but different properties is known as:
Answer» The phenomenon of existence of two or more compounds possessing the same molecular formulae but different properties is known as:

Discussion

13.	Statement – 1 : Propene and cyclopropane are ring chain isomers. And Statement – 2 : Propene does not exhibit geometrical isomerism.
Answer» Statement – 1 : Propene and cyclopropane are ring chain isomers. And Statement – 2 : Propene does not exhibit geometrical isomerism.

Discussion

14.	14. In a reaction A+B2 -> A3B2 if 80 atoms of A and 100 molecules of B react then which ( A or B) is tge limiting reagent and how many molecules of A3B2 will be formed?
Answer» 14. In a reaction A+B2 -> A3B2 if 80 atoms of A and 100 molecules of B react then which ( A or B) is tge limiting reagent and how many molecules of A3B2 will be formed?

Discussion

15.	One gram of charcoal adsorbs CH3COOH from 100 mL of 0.6 M CH3COOH aqueous solution to form a monolayer, and thereby the molarity of CH3COOH reduces to 0.58. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal per gram =3.0×102 m2. Take NA=6×1023
Answer» One gram of charcoal adsorbs $C H_{3} C O O H$ from $100 mL$ of $0.6 M$ $C H_{3} C O O H$ aqueous solution to form a monolayer, and thereby the molarity of $C H_{3} C O O H$ reduces to $0.58$ . Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal per gram $= 3.0 \times 10^{2} m^{2}$ . Take $N_{A} = 6 \times 10^{23}$

Discussion

16.	in metal carbonyls of formula M(CO)x (which follows EN rules) if M is Ni,Fe,Cr the value of x will be 1.6,5,6 2.4,5,6 3.4,4,5 4,4,6,6
Answer» in metal carbonyls of formula M(CO)x (which follows EN rules) if M is Ni,Fe,Cr the value of x will be 1.6,5,6 2.4,5,6 3.4,4,5 4,4,6,6

Discussion

17.	When potassium ferrocyanide crystals are heated with concentrated sulphuric acid, the gas evolved is
Answer» When potassium ferrocyanide crystals are heated with concentrated sulphuric acid, the gas evolved is

Discussion

18.	If a constitute particle is missing from the lattice site,the defect is known as __.
Answer» If a constitute particle is missing from the lattice site,the defect is known as __.

Discussion

19.	State and prove Torricelli’s theorem in fluid dynamics.
Answer» State and prove Torricelli’s theorem in fluid dynamics.

Discussion

20.	what is first order kinetics?
Answer» what is first order kinetics?

Discussion

21.	Which alkene gives a meso compound upon reaction with Br2 in CH2Cl2?
Answer» Which alkene gives a meso compound upon reaction with $B r_{2}$ in $C H_{2} C l_{2}$ ?

Discussion

22.	10. Chemical equation of rust is ?
Answer» 10. Chemical equation of rust is ?

Discussion

23.	Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g/mL.Find the Volume of acid required to make one litre of 0.1 M H2SO4 solution.
Answer» Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g/mL.Find the Volume of acid required to make one litre of 0.1 M H2SO4 solution.

Discussion

24.	Which of the following has highest boiling pt.? 1 acetone 2 diethyl ether 3 methanol 4 ethanol
Answer» Which of the following has highest boiling pt.? 1 acetone 2 diethyl ether 3 methanol 4 ethanol

Discussion

25.	Metal M crystallizes in a simple cubic crystal and has a packing efficiency of 52.2%. When it combines with a halogen X2 and forms MX, it forms a NaCl type crystal with a cation to anion size ratio of 1:2. Packing efficiency (%) of the MX crystal is
Answer» Metal M crystallizes in a simple cubic crystal and has a packing efficiency of 52.2%. When it combines with a halogen $X_{2}$ and forms MX, it forms a NaCl type crystal with a cation to anion size ratio of 1:2. Packing efficiency (%) of the MX crystal is

Discussion

26.	Wrutz reaction in simplest language
Answer» Wrutz reaction in simplest language

Discussion

27.	2-methylpropan-2-ol H+−−→ΔAMajor ProductHBr−−−−→ROORBMajor ProductThe major product B for the above reaction is :
Answer» $2-methylpropan-2-ol H^{+} - - \to Δ A Major Product H B r - --- \to R O O R B Major Product$ The major product B for the above reaction is :

Discussion

28.	The B—F bond length is the shortest in which of the following species?
Answer» The $B — F$ bond length is the shortest in which of the following species?

Discussion

29.	91.Convert methanol to i) tertiary butanol ii) 1- butanol
Answer» 91.Convert methanol to i) tertiary butanol ii) 1- butanol

Discussion

30.	Beryllium is a better conductor than Lithium. Explain .
Answer» Beryllium is a better conductor than Lithium. Explain .

Discussion

31.	What is chromatography? Write some uses of chromatography.
Answer» What is chromatography? Write some uses of chromatography.

Discussion

32.	the correct set of quantum mumbers for the unpaired electron of F atom is:
Answer» the correct set of quantum mumbers for the unpaired electron of F atom is:

Discussion

33.	Which of the following do not form hydrides?
Answer» Which of the following do not form hydrides?

Discussion

34.	Why did Heisenberg replace the concept of definite orbits by the concept of probability?
Answer» Why did Heisenberg replace the concept of definite orbits by the concept of probability?

Discussion

35.	The electonic configuration of four different elements is given below. Identify the group 14 element among these
Answer» The electonic configuration of four different elements is given below. Identify the group 14 element among these

Discussion

36.	Which of the following reagents cannot be used for the conversion of nitrobenzene to aniline?
Answer» Which of the following reagents cannot be used for the conversion of nitrobenzene to aniline?

Discussion

37.	What is the difference between anomeric carbon and chiral carbon? Or what is anomeric carbon?
Answer» What is the difference between anomeric carbon and chiral carbon? Or what is anomeric carbon?

Discussion

38.	36. 1.25 g of sample of limestone on heating gives 0.44 g carbon dioxide. The percentage purity of CaCO3 in limestone is
Answer» 36. 1.25 g of sample of limestone on heating gives 0.44 g carbon dioxide. The percentage purity of CaCO3 in limestone is

Discussion

39.	Predictall the alkenes that would be formed by dehydrohalogenation of thefollowing halides with sodium ethoxide in ethanol and identify themajor alkene:(i)1-Bromo-1-methylcyclohexane(ii) 2-Chloro-2-methylbutane(iii) 2,2,3-Trimethyl-3-bromopentane.
Answer» Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the major alkene: (i) 1-Bromo-1-methylcyclohexane (ii) 2-Chloro-2-methylbutane (iii) 2,2,3-Trimethyl-3-bromopentane.

39.

Predictall the alkenes that would be formed by dehydrohalogenation of thefollowing halides with sodium ethoxide in ethanol and identify themajor alkene:(i)1-Bromo-1-methylcyclohexane(ii) 2-Chloro-2-methylbutane(iii) 2,2,3-Trimethyl-3-bromopentane.

Answer»

Predict
all the alkenes that would be formed by dehydrohalogenation of the
following halides with sodium ethoxide in ethanol and identify the
major alkene:

(i)
1-Bromo-1-methylcyclohexane

(ii)
2-Chloro-2-methylbutane

(iii)
2,2,3-Trimethyl-3-bromopentane.

Discussion

40.	When should we use LCM and HCF in findings
Answer» When should we use LCM and HCF in findings

Discussion

41.	Calculate the total work done along the path 'ABCD' (as shown in figure) for a one mole of monoatomic gas.
Answer» Calculate the total work done along the path 'ABCD' (as shown in figure) for a one mole of monoatomic gas.

Discussion

42.	Bottles containing C6H5I and C6H5CH2I lost their original labels. They are labelled as A and B. A and B were separately taken in a test tubes and boiled with NaOHsolution.Then in each test tube Dilute HNO3 and Ag NO3 was added. Substance B gave a yellow precipitate. Which one of thefollowingstatements is true for this experiment?
Answer» Bottles containing C₆H₅I and C₆H₅CH₂I lost their original labels. They are labelled as A and B. A and B were separately taken in a test tubes and boiled with NaOHsolution.Then in each test tube Dilute HNO₃ and Ag NO₃ was added. Substance B gave a yellow precipitate. Which one of thefollowingstatements is true for this experiment?

Discussion

43.	ntVolume of carbon dioxide obtained at STP by the complete decomposition of 9.85g sodium carbonaten nta)2.24 Ln ntb)zero Ln ntc).85Ln ntd).56 Ln ntn
Answer» ntVolume of carbon dioxide obtained at STP by the complete decomposition of 9.85g sodium carbonaten nta)2.24 Ln ntb)zero Ln ntc).85Ln ntd).56 Ln ntn

Discussion

44.	C6H3−C5H=C4H−C3H2−C2≡C1HThe hybridizations of the carbons numbered 1, 3 and 5 in the given hydrocarbon are respectively:
Answer» $C 6 H_{3} - C 5 H = C 4 H - C 3 H_{2} - C 2 \equiv C 1 H$ The hybridizations of the carbons numbered 1, 3 and 5 in the given hydrocarbon are respectively:

Discussion

45.	according to law of photochemical equivalence ,the energy absorbed is given as (in ergs/mole)
Answer» according to law of photochemical equivalence ,the energy absorbed is given as (in ergs/mole)

Discussion

46.	What is the product obtained in reduction of crotonaldehyde in presence of Ni/H2
Answer» What is the product obtained in reduction of crotonaldehyde in presence of Ni/H2

Discussion

47.	ASSERTION: adiabatic process is always a fast process REASONING: no change in internal energy occurs during a fast process.
Answer» ASSERTION: adiabatic process is always a fast process REASONING: no change in internal energy occurs during a fast process.

Discussion

48.	Number of grams of ethanol required to make an aqueous solution of volume 250ml and concentration 4M, is
Answer» Number of grams of ethanol required to make an aqueous solution of volume 250ml and concentration 4M, is

Discussion

49.	What is the order of acidity of alcohols and phenols?Explain both in detail.
Answer» What is the order of acidity of alcohols and phenols? Explain both in detail.

Discussion

50.	define tubular reabsorption
Answer» define tubular reabsorption

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

IUPAC name of (CH3)2CH - N(CH3)2 is

Which of the following compound has higher enol content?

Why is the plastics callled fibres

Which of the following is not an alloy?

Consider the standard reduction potential (in volts) as shown in figure. Find Eo.

CH3CH(CH3)C2CH3 in presence of Cl2 → A The compound "A" is

For the reaction 2NO(g)+2H2(g)→N2(g)+2H2O(g)The rate expression can be written in the following waysd[N2]dt=k1[NO][H2]d[H2O]dt=k[NO][H2]−d[NO]dt=k′1[NO][H2]−d[H2]dt=k′′1[NO][H2]The relationship between k,k1,k′1 and k′′1:

Thyroxine, a hormone produced in the thyroid gland in humans, contains:

Which of the following will show tautomerism?

When light of wavelength ′λ′ falls on the surface of a metal with threshold wavelength ′λ′0, an electron of mass 'm' is emitted. The de Broglie wavelength of emitted electron is:

Equivalent mass of H3PO4 for the given,H3PO4+Ca(OH)2------CaHPO4+2H2O is

The phenomenon of existence of two or more compounds possessing the same molecular formulae but different properties is known as:

Statement – 1 : Propene and cyclopropane are ring chain isomers. And Statement – 2 : Propene does not exhibit geometrical isomerism.

14. In a reaction A+B2 -> A3B2 if 80 atoms of A and 100 molecules of B react then which ( A or B) is tge limiting reagent and how many molecules of A3B2 will be formed?

in metal carbonyls of formula M(CO)x (which follows EN rules) if M is Ni,Fe,Cr the value of x will be 1.6,5,6 2.4,5,6 3.4,4,5 4,4,6,6

When potassium ferrocyanide crystals are heated with concentrated sulphuric acid, the gas evolved is

If a constitute particle is missing from the lattice site,the defect is known as __.

State and prove Torricelli’s theorem in fluid dynamics.

what is first order kinetics?

Which alkene gives a meso compound upon reaction with Br2 in CH2Cl2?

10. Chemical equation of rust is ?

Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g/mL.Find the Volume of acid required to make one litre of 0.1 M H2SO4 solution.

Which of the following has highest boiling pt.? 1 acetone 2 diethyl ether 3 methanol 4 ethanol

Metal M crystallizes in a simple cubic crystal and has a packing efficiency of 52.2%. When it combines with a halogen X2 and forms MX, it forms a NaCl type crystal with a cation to anion size ratio of 1:2. Packing efficiency (%) of the MX crystal is

Wrutz reaction in simplest language

2-methylpropan-2-ol H+−−→ΔAMajor ProductHBr−−−−→ROORBMajor ProductThe major product B for the above reaction is :

The B—F bond length is the shortest in which of the following species?

91.Convert methanol to i) tertiary butanol ii) 1- butanol

Beryllium is a better conductor than Lithium. Explain .

What is chromatography? Write some uses of chromatography.

the correct set of quantum mumbers for the unpaired electron of F atom is:

Which of the following do not form hydrides?

Why did Heisenberg replace the concept of definite orbits by the concept of probability?

The electonic configuration of four different elements is given below. Identify the group 14 element among these

Which of the following reagents cannot be used for the conversion of nitrobenzene to aniline?

What is the difference between anomeric carbon and chiral carbon? Or what is anomeric carbon?

36. 1.25 g of sample of limestone on heating gives 0.44 g carbon dioxide. The percentage purity of CaCO3 in limestone is

Predictall the alkenes that would be formed by dehydrohalogenation of thefollowing halides with sodium ethoxide in ethanol and identify themajor alkene:(i)1-Bromo-1-methylcyclohexane(ii) 2-Chloro-2-methylbutane(iii) 2,2,3-Trimethyl-3-bromopentane.

When should we use LCM and HCF in findings

Calculate the total work done along the path 'ABCD' (as shown in figure) for a one mole of monoatomic gas.

ntVolume of carbon dioxide obtained at STP by the complete decomposition of 9.85g sodium carbonaten nta)2.24 Ln ntb)zero Ln ntc).85Ln ntd).56 Ln ntn

C6H3−C5H=C4H−C3H2−C2≡C1HThe hybridizations of the carbons numbered 1, 3 and 5 in the given hydrocarbon are respectively:

according to law of photochemical equivalence ,the energy absorbed is given as (in ergs/mole)

What is the product obtained in reduction of crotonaldehyde in presence of Ni/H2

ASSERTION: adiabatic process is always a fast process REASONING: no change in internal energy occurs during a fast process.

Number of grams of ethanol required to make an aqueous solution of volume 250ml and concentration 4M, is

What is the order of acidity of alcohols and phenols?Explain both in detail.

define tubular reabsorption