46295 + Interview Questions in Chemistry

1.	Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn.
Answer» Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn.

Discussion

2.	CH3−C≡CH1 mol HCl−−−−−−→X1 mol HBr−−−−−−→R2O2Y 'Y' is:
Answer» $C H_{3} - C \equiv C H 1 m o l H C l - ----- \to X 1 m o l H B r - ----- \to R_{2} O_{2} Y$ 'Y' is:

Discussion

3.	The H-N-H angle vlaue is higher than H-P-H, H-AsH and H-SbH angles. Why?
Answer» The H-N-H angle vlaue is higher than H-P-H, H-AsH and H-SbH angles. Why?

Discussion

4.	The product of following reaction is
Answer» The product of following reaction is

Discussion

5.	Calculate the number of KClO3 formula units present in 0.5 kilomoles of KClO3.
Answer» Calculate the number of $K C l O_{3}$ formula units present in 0.5 kilomoles of $K C l O_{3}$ .

Discussion

6.	Why is the vapour pressure of an aqueous solution of glucose lower than that of water
Answer» Why is the vapour pressure of an aqueous solution of glucose lower than that of water

Discussion

7.	From the given reaction sequences, A, B and C are respectively:
Answer» From the given reaction sequences, A, B and C are respectively:

Discussion

8.	I want all formulas related to Thermodynamics
Answer» I want all formulas related to Thermodynamics

Discussion

9.	Which of the following structures can be classified as isolated polyenes ?
Answer» Which of the following structures can be classified as isolated polyenes ?

Discussion

10.	What do youymean by Do not panic
Answer» What do youymean by Do not panic

10.

What do youymean by Do not panic

Answer»

What do youymean by

Do not panic

Discussion

11.	When hydrochloric acid is treated with propene in presence of benzoyl peroxide then what is the result?
Answer» When hydrochloric acid is treated with propene in presence of benzoyl peroxide then what is the result?

Discussion

12.	A mixture of FeO and FeO3 when heated in air to constant weight gains 5% in weight. Find out composition of mixture. Plz explain the reaction involved in the process along with the equation. Thanks in advance ...☺
Answer» A mixture of FeO and FeO₃ when heated in air to constant weight gains 5% in weight. Find out composition of mixture. Plz explain the reaction involved in the process along with the equation. Thanks in advance ...☺

12.

A mixture of FeO and FeO3 when heated in air to constant weight gains 5% in weight. Find out composition of mixture. Plz explain the reaction involved in the process along with the equation. Thanks in advance ...☺

Answer»

A mixture of FeO and FeO₃ when heated in air to constant weight gains 5% in weight. Find out composition of mixture.

Plz explain the reaction involved in the process along with the equation.

Thanks in advance ...☺

Discussion

13.	Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What is p∘toluene(25∘C)?
Answer» Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What is $p_{toluene}^{\circ} (25^{\circ} C)$ ?

Discussion

14.	If ‘X′ is the number of different functional groups in the compound given above, and ‘Y′ is the double bond equivalence of the same compound, then X+Y−10 is:
Answer» If $‘ X^{'}$ is the number of different functional groups in the compound given above, and $‘ Y^{'}$ is the double bond equivalence of the same compound, then $X + Y - 10$ is:

Discussion

15.	Write the structures of monomers used for getting the following polymers: (i) Nylon-6, 6 (ii) Glyptal (iii) Buna-S
Answer» Write the structures of monomers used for getting the following polymers: (i) Nylon-6, 6 (ii) Glyptal (iii) Buna-S

Discussion

16.	Why is 1ms−1 written instead of m/s?
Answer» Why is $1 m s^{- 1}$ written instead of m/s?

Discussion

17.	The correct IUPAC name of the given compound is : (correct answer +2, wrong answer -0.5)
Answer» The correct IUPAC name of the given compound is : (correct answer +2, wrong answer -0.5)

Discussion

18.	ASSERTION(A): For every chemical reaction at equilibrium, standard Gibbs energy of the reaction is zero. REASON(R): At constant temperature and pressure, chemical reactions are spontaneous in the direction of the decreasing Gibbs energy.
Answer» ASSERTION(A): For every chemical reaction at equilibrium, standard Gibbs energy of the reaction is zero. REASON(R): At constant temperature and pressure, chemical reactions are spontaneous in the direction of the decreasing Gibbs energy.

Discussion

19.	Sir the chapters Atoms and nuclear chemistry is common in botg Physics and chenistry so do we need to separately learn these chapters again,because i have already learnt these two common chapters in chemistry.So do i need to study this once again.
Answer» Sir the chapters Atoms and nuclear chemistry is common in botg Physics and chenistry so do we need to separately learn these chapters again,because i have already learnt these two common chapters in chemistry.So do i need to study this once again.

Discussion

20.	An aqueous solution of hydrated aluminium chloride contains
Answer» An aqueous solution of hydrated aluminium chloride contains

Discussion

21.	The wave function ψ in the Schrodinger wave equation represents
Answer» The wave function $ψ$ in the Schrodinger wave equation represents

Discussion

22.	What is meant by crystallisation and what is the use of it?
Answer» What is meant by crystallisation and what is the use of it?

Discussion

23.	Tricks to learn f block of periodic table
Answer» Tricks to learn f block of periodic table

Discussion

24.	What is approximate size of a molecule
Answer» What is approximate size of a molecule

Discussion

25.	Explain the mechanism of the following reactions: CH3−CH2−OHH+−−−→443 KCH2=CH2+H2O
Answer» Explain the mechanism of the following reactions: $C H_{3} - C H_{2} - O H H^{+} - -- \to 443 K C H_{2} = C H_{2} + H_{2} O$

Discussion

26.	A cylinder containing cooking gas can withstand a pressure of 14.9 atms. The pressure gauge of the cylinder indicates 12 atms at 27°C . Due to sudden fire in the building , temperature starts rising.At what temperature will the cylinder explode.
Answer» A cylinder containing cooking gas can withstand a pressure of 14.9 atms. The pressure gauge of the cylinder indicates 12 atms at 27°C . Due to sudden fire in the building , temperature starts rising.At what temperature will the cylinder explode.

Discussion

27.	Which of the following solution has highest pH 1) 0.2M HClO4 2)0.2M CH3CH3COOH 3)0.02M HBr 4)0.3M KCl
Answer» Which of the following solution has highest pH 1) 0.2M HClO₄ 2)0.2M CH₃CH3COOH 3)0.02M HBr 4)0.3M KCl

27.

Which of the following solution has highest pH 1) 0.2M HClO4 2)0.2M CH3CH3COOH 3)0.02M HBr 4)0.3M KCl

Answer»

Which of the following solution has highest pH

1) 0.2M HClO₄ 2)0.2M CH₃CH3COOH 3)0.02M HBr 4)0.3M KCl

Discussion

28.	Ammonia gas is passed into water, yielding solution of density 0.93g/ccm and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is?
Answer» Ammonia gas is passed into water, yielding solution of density 0.93g/ccm and containing 18.6% NH₃ by weight. The mass of NH₃ per cc of the solution is?

Discussion

29.	Calculate the amount of KClO3 needed to supply sufficient oxygen for burning 112 L of CO at NTP.
Answer» Calculate the amount of KClO3 needed to supply sufficient oxygen for burning 112 L of CO at NTP.

Discussion

30.	IUPAC name of m - cresol is . . . (a) 3-methylphenol (b) 3-chlorophenol (c) 3-methoxyphenol (d) benzene-1, 3-diol
Answer» IUPAC name of m - cresol is . . . (a) 3-methylphenol (b) 3-chlorophenol (c) 3-methoxyphenol (d) benzene-1, 3-diol

Discussion

31.	A certain compound when burnt gave three oxides. The first turned lime water milky, the second turned cobalt chloride paper pink and third formed an aqueous solution of pH 3. The elements present in the compound are
Answer» A certain compound when burnt gave three oxides. The first turned lime water milky, the second turned cobalt chloride paper pink and third formed an aqueous solution of pH 3. The elements present in the compound are

Discussion

32.	The density of water is 1 gm/ml. The number of molecules present in 1 litre of water is
Answer» The density of water is $1 g m / m l$ . The number of molecules present in $1 l i t r e$ of water $i s$

Discussion

33.	What does it mean to have directional character of bond?
Answer» What does it mean to have directional character of bond?

Discussion

34.	What is dragos rule . Explain with an example in detail
Answer» What is dragos rule . Explain with an example in detail

Discussion

35.	How to represent double or triple bond in condensed form
Answer» How to represent double or triple bond in condensed form

Discussion

36.	Calculate the total number of neutrons present in 1 mole of C-14.
Answer» Calculate the total number of neutrons present in 1 mole of C-14.

Discussion

37.	Calcuate the volume of 1 mole of an ideal gas at STP.
Answer» Calcuate the volume of 1 mole of an ideal gas at STP.

Discussion

38.	What is the vanderwall radius periodicity along A period and down the group in the periodic table
Answer» What is the vanderwall radius periodicity along A period and down the group in the periodic table

Discussion

39.	The compound with more solubility and more basic nature are respectively
Answer» The compound with more solubility and more basic nature are respectively

Discussion

40.	Which of the following is the electronic configuration of cerium?
Answer» Which of the following is the electronic configuration of cerium?

Discussion

41.	Which of the following sulphate is most soluble in water?
Answer» Which of the following sulphate is most soluble in water?

Discussion

42.	Identify the compound which is strongly acidic in nature from the following.
Answer» Identify the compound which is strongly acidic in nature from the following.

Discussion

43.	Which of the following will melt between 500°C to 1500°C ?
Answer» Which of the following will melt between 500°C to 1500°C ?

Discussion

44.	A hydrocarbon contains 7.70% hydrogen. 0.56L of the hydrocarbon weighs 1.95g at STP. Then hydrocarbon is an
Answer» A hydrocarbon contains 7.70% hydrogen. 0.56L of the hydrocarbon weighs 1.95g at STP. Then hydrocarbon is an

Discussion

45.	An aqueous solution of a salt (A) gives white precipitate (B) with sodium chloride solution. The filtrate gives a black precipitate. (C) When H2S is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow precipitate (D) on treatment with sodium iodide. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Identify the compound (A) to (D).
Answer» An aqueous solution of a salt (A) gives white precipitate (B) with sodium chloride solution. The filtrate gives a black precipitate. (C) When $H_{2} S$ is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow precipitate (D) on treatment with sodium iodide. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Identify the compound (A) to (D).

Discussion

46.	The amount of radiation emitted by a perfectly black body is proportional to
Answer» The amount of radiation emitted by a perfectly black body is proportional to

Discussion

47.	Dolomite is a mineral of
Answer» Dolomite is a mineral of

Discussion

48.	An alkene gives two moles of HCHO, one mole of CO2 and one mole of on ozonolysis follows by hydrolysis. The structure of this alkene is:
Answer» An alkene gives two moles of $H C H O$ , one mole of $C O_{2}$ and one mole of on ozonolysis follows by hydrolysis. The structure of this alkene is:

Discussion

49.	The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is [2008]
Answer» The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is [2008]

Discussion

50.	An organic compound contains carbon and hydrogen. Its elemental analysis gave C−75% and H−25%. The empirical formula of the compound would be:
Answer» An organic compound contains carbon and hydrogen. Its elemental analysis gave $C - 75 %$ and $H - 25 %$ . The empirical formula of the compound would be:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn.

CH3−C≡CH1 mol HCl−−−−−−→X1 mol HBr−−−−−−→R2O2Y 'Y' is:

The H-N-H angle vlaue is higher than H-P-H, H-AsH and H-SbH angles. Why?

The product of following reaction is

Calculate the number of KClO3 formula units present in 0.5 kilomoles of KClO3.

Why is the vapour pressure of an aqueous solution of glucose lower than that of water

From the given reaction sequences, A, B and C are respectively:

I want all formulas related to Thermodynamics

Which of the following structures can be classified as isolated polyenes ?

What do youymean by Do not panic

When hydrochloric acid is treated with propene in presence of benzoyl peroxide then what is the result?

A mixture of FeO and FeO​​​​3 when heated in air to constant weight gains 5% in weight. Find out composition of mixture. Plz explain the reaction involved in the process along with the equation. Thanks in advance ...☺

Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: What is p∘toluene(25∘C)?

If ‘X′ is the number of different functional groups in the compound given above, and ‘Y′ is the double bond equivalence of the same compound, then X+Y−10 is:

Write the structures of monomers used for getting the following polymers: (i) Nylon-6, 6 (ii) Glyptal (iii) Buna-S

Why is 1ms−1 written instead of m/s?

The correct IUPAC name of the given compound is : (correct answer +2, wrong answer -0.5)

ASSERTION(A): For every chemical reaction at equilibrium, standard Gibbs energy of the reaction is zero. REASON(R): At constant temperature and pressure, chemical reactions are spontaneous in the direction of the decreasing Gibbs energy.

Sir the chapters Atoms and nuclear chemistry is common in botg Physics and chenistry so do we need to separately learn these chapters again,because i have already learnt these two common chapters in chemistry.So do i need to study this once again.

An aqueous solution of hydrated aluminium chloride contains

The wave function ψ in the Schrodinger wave equation represents

What is meant by crystallisation and what is the use of it?

Tricks to learn f block of periodic table

What is approximate size of a molecule

Explain the mechanism of the following reactions: CH3−CH2−OHH+−−−→443 KCH2=CH2+H2O

​​​​A cylinder containing cooking gas can withstand a pressure of 14.9 atms. The pressure gauge of the cylinder indicates 12 atms at 27°C . Due to sudden fire in the building , temperature starts rising.At what temperature will the cylinder explode.

Which of the following solution has highest pH 1) 0.2M HClO​​4 ​​​​​​ 2)0.2M CH​​​​​​​3​​​​CH3COOH 3)0.02M HBr 4)0.3M KCl

Ammonia gas is passed into water, yielding solution of density 0.93g/ccm and containing 18.6% NH3​​​​ by weight. The mass of NH3 per cc of the solution is?

Calculate the amount of KClO3 needed to supply sufficient oxygen for burning 112 L of CO at NTP.

IUPAC name of m - cresol is . . . (a) 3-methylphenol (b) 3-chlorophenol (c) 3-methoxyphenol (d) benzene-1, 3-diol

A certain compound when burnt gave three oxides. The first turned lime water milky, the second turned cobalt chloride paper pink and third formed an aqueous solution of pH 3. The elements present in the compound are

The density of water is 1 gm/ml. The number of molecules present in 1 litre of water is

What does it mean to have directional character of bond?

What is dragos rule . Explain with an example in detail

How to represent double or triple bond in condensed form

Calculate the total number of neutrons present in 1 mole of C-14.

Calcuate the volume of 1 mole of an ideal gas at STP.

What is the vanderwall radius periodicity along A period and down the group in the periodic table

The compound with more solubility and more basic nature are respectively

Which of the following is the electronic configuration of cerium?

Which of the following sulphate is most soluble in water?

Identify the compound which is strongly acidic in nature from the following.

Which of the following will melt between 500°C to 1500°C ?

A hydrocarbon contains 7.70% hydrogen. 0.56L of the hydrocarbon weighs 1.95g at STP. Then hydrocarbon is an

The amount of radiation emitted by a perfectly black body is proportional to

Dolomite is a mineral of

An alkene gives two moles of HCHO, one mole of CO2 and one mole of on ozonolysis follows by hydrolysis. The structure of this alkene is:

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is [2008]

An organic compound contains carbon and hydrogen. Its elemental analysis gave C−75% and H−25%. The empirical formula of the compound would be:

A mixture of FeO and FeO3 when heated in air to constant weight gains 5% in weight. Find out composition of mixture. Plz explain the reaction involved in the process along with the equation. Thanks in advance ...☺

A cylinder containing cooking gas can withstand a pressure of 14.9 atms. The pressure gauge of the cylinder indicates 12 atms at 27°C . Due to sudden fire in the building , temperature starts rising.At what temperature will the cylinder explode.

Which of the following solution has highest pH 1) 0.2M HClO4 2)0.2M CH3CH3COOH 3)0.02M HBr 4)0.3M KCl

Ammonia gas is passed into water, yielding solution of density 0.93g/ccm and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is?