46295 + Interview Questions in Chemistry

1.	Question 5Find the values of the letters in the following and give reasons for the steps involved. A B × 3–––––––– C A B––––––––
Answer» Question 5 Find the values of the letters in the following and give reasons for the steps involved. $A B$ $\times 3 - ------ -$ $C A B - ------ -$

Discussion

2.	An alloy of Iron(50%), nickel (45%) and manganese (0.3%) has a density of 8 g/cm3. How many iron atoms are there on a block of alloy 10 cm×20 cm×15 cm? (Avogardo's no=NA=6.023×1023)
Answer» An alloy of Iron $(50 %)$ , nickel $(45 %)$ and manganese $(0.3 %)$ has a density of $8 {g/cm}^{3}$ . How many iron atoms are there on a block of alloy $10 cm \times 20 cm \times 15 cm$ ? $(Avogardo's no = N_{A} = 6.023 \times 10^{23})$

Discussion

3.	Q1) Among CH4 and O2 which have greater vandarwall cons†an t 'a' and why
Answer» Q1) Among CH4 and O2 which have greater vandarwall cons†an t 'a' and why

Discussion

4.	Aniline in a set of reactions furnished a major product D.The structure of product D would be:
Answer» Aniline in a set of reactions furnished a major product D. The structure of product D would be:

Discussion

5.	ZnS+O2=ZnO+CO2
Answer» ZnS+O2=ZnO+CO2

Discussion

6.	Which one of the following reactions of Xenon compounds iss not feasible
Answer» Which one of the following reactions of Xenon compounds iss not feasible

Discussion

7.	Find the correct graphs regarding the equilibrium state:
Answer» Find the correct graphs regarding the equilibrium state:

Discussion

8.	How to find molecular mass
Answer» How to find molecular mass

Discussion

9.	What is Oleum? What is the need to calculate the %of free SO3(sulphur trioxide) in Oleum?
Answer» What is Oleum? What is the need to calculate the %of free SO3(sulphur trioxide) in Oleum?

Discussion

10.	Temperature of one mol of an ideal gas is raised by 2°C by a process. The internal energy change would be maximum if the process isOptions: Isochoric Adiabatic Isobaric Equal for any process
Answer» Temperature of one mol of an ideal gas is raised by 2°C by a process. The internal energy change would be maximum if the process is Options: Isochoric Adiabatic Isobaric Equal for any process

Discussion

11.	what is the covalency of boron
Answer» what is the covalency of boron

Discussion

12.	5.Azimuthal quantum numbers for s, P, d, f subshells
Answer» 5.Azimuthal quantum numbers for s, P, d, f subshells

Discussion

13.	18. Give the mechanism of rusting 1. 4 2. 6 3. 8 4. 12 which option is correct and why ?
Answer» 18. Give the mechanism of rusting 1. 4 2. 6 3. 8 4. 12 which option is correct and why ?

Discussion

14.	The compound that has the highest lattice energy is:
Answer» The compound that has the highest lattice energy is:

Discussion

15.	The number of stereoisomers in the given compound is:
Answer» The number of stereoisomers in the given compound is:

Discussion

16.	1 A certain mass of a gas occupies volume 2 litre at STP keeping the pressure constant at what temperature would the gas occupies volume 4L 2 one litre of unknown gas weighs 1.25 gram at ntp which of the following gas pretend to be the above data
Answer» 1 A certain mass of a gas occupies volume 2 litre at STP keeping the pressure constant at what temperature would the gas occupies volume 4L 2 one litre of unknown gas weighs 1.25 gram at ntp which of the following gas pretend to be the above data

16.

1 A certain mass of a gas occupies volume 2 litre at STP keeping the pressure constant at what temperature would the gas occupies volume 4L 2 one litre of unknown gas weighs 1.25 gram at ntp which of the following gas pretend to be the above data

Answer»

1 A certain mass of a gas occupies volume 2 litre at STP keeping the pressure constant at what temperature would the gas occupies volume 4L

2 one litre of unknown gas weighs 1.25 gram at ntp which of the following gas pretend to be the above data

Discussion

17.	Ten percent of a radioactive sample has decayed in 1 day. After 2 days, the decayed percentage of nuclei will be
Answer» Ten percent of a radioactive sample has decayed in $1 day$ . After $2 days$ , the decayed percentage of nuclei will be

Discussion

18.	Express 1 metric tonne in kg.
Answer» Express 1 metric tonne in kg.

Discussion

19.	Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent
Answer» Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent

Discussion

20.	A radiation of energy E falls on a metal whose threshold energy is E0. Then, the kinetic energy is given as:
Answer» A radiation of energy $E$ falls on a metal whose threshold energy is $E_{0}$ . Then, the kinetic energy is given as:

Discussion

21.	CFSE value of d6 octahedral complex at weak field is −xΔo. x is
Answer» CFSE value of $d^{6}$ octahedral complex at weak field is $- x Δ_{o}$ . x is

Discussion

22.	How to find out the stability of carbocation?How to find out hybridization in carbon atoms?How to find out the major and minor products otherthan chlorination and bromination?
Answer» How to find out the stability of carbocation? How to find out hybridization in carbon atoms? How to find out the major and minor products otherthan chlorination and bromination?

Discussion

23.	In gun barrel the steel used is
Answer» In gun barrel the steel used is

Discussion

24.	Element ‘B’ forms ccp structure and ‘A’ occupies half of the octahedral voids, while oxygen atoms occupy all the tetrahedral voids. The structure of bimetallic oxide is:
Answer» Element ‘B’ forms ccp structure and ‘A’ occupies half of the octahedral voids, while oxygen atoms occupy all the tetrahedral voids. The structure of bimetallic oxide is:

Discussion

25.	Calculate the mole fraction of glycerin C3H5(OH)3 in a 100 g solution containing 33 g of glycerin, 60 g isopropyl alcohol and rest water. (Round off to one decimel place)
Answer» Calculate the mole fraction of glycerin $C_{3} H_{5} (O H)_{3}$ in a 100 g solution containing 33 g of glycerin, 60 g isopropyl alcohol and rest water. (Round off to one decimel place)

Discussion

26.	What will be the products of this reaction?
Answer» What will be the products of this reaction?

Discussion

27.	The solubility of salts of weak acids :(1)Increases at lower pH(2)Increases at higher pH(3)Is maximum at neutral pH(4)Doesn't depend on pH
Answer» The solubility of salts of weak acids : (1) Increases at lower pH (2) Increases at higher pH (3) Is maximum at neutral pH (4) Doesn't depend on pH

Discussion

28.	In a titration between oxalic acid and acidified potassium permanganate, the manganous salt is formed which catalyses the reaction. The manganous salt is
Answer» In a titration between oxalic acid and acidified potassium permanganate, the manganous salt is formed which catalyses the reaction. The manganous salt is

Discussion

29.	The relative lowering of vapour pressure of a liquid in a closed container is a) alpha Xsolute b) alpha 1/Xsolute c) =Xsolute d) alpha molality
Answer» The relative lowering of vapour pressure of a liquid in a closed container is a) alpha Xsolute b) alpha 1/Xsolute c) =Xsolute d) alpha molality

Discussion

30.	Maximum number of covalent bonds formed by N and P respectively are:
Answer» Maximum number of covalent bonds formed by $N$ and $P$ respectively are:

Discussion

31.	4. For A2 (g)=2A(g) type process of 'D' is normal vapour density of A2 and 'd' is vapour density of equilibrium mixture,and (alpha) is degree of dissociation, then which of the following graph is correct
Answer» 4. For A2 (g)=2A(g) type process of 'D' is normal vapour density of A2 and 'd' is vapour density of equilibrium mixture,and (alpha) is degree of dissociation, then which of the following graph is correct

Discussion

32.	ntElement A reacts with oxygen to form A2O3 if 0.359 grams of A reactsnntto give 0.559 grams of the compound. Find the atomic weight of A?n
Answer» ntElement A reacts with oxygen to form A2O3 if 0.359 grams of A reactsnntto give 0.559 grams of the compound. Find the atomic weight of A?n

Discussion

33.	40.Resonance hybrid of nitrate ion
Answer» 40.Resonance hybrid of nitrate ion

Discussion

34.	Q- If \|A-B\|=\|A+B\| then angle between A and B is ___. Explain with reasons.
Answer» Q- If \|A-B\|=\|A+B\| then angle between A and B is ___. Explain with reasons.

Discussion

35.	Any organic compound contains 49.3% carbon, 6.84% H and vapour density is 73. Molecular formula of compound is:- (1) C6H10O4, (2) C4H8O4, (3) C3H6O4, (4) C5H10O2.
Answer» Any organic compound contains 49.3% carbon, 6.84% H and vapour density is 73. Molecular formula of compound is:- (1) C₆H₁₀O₄, (2) C₄H₈O₄, (3) C₃H₆O₄, (4) C₅H₁₀O₂.

35.

Any organic compound contains 49.3% carbon, 6.84% H and vapour density is 73. Molecular formula of compound is:- (1) C6H10O4, (2) C4H8O4, (3) C3H6O4, (4) C5H10O2.

Answer»

Any organic compound contains 49.3% carbon, 6.84% H and vapour density is 73. Molecular formula of compound is:-

(1) C₆H₁₀O₄,

(2) C₄H₈O₄,

(3) C₃H₆O₄,

(4) C₅H₁₀O₂.

Discussion

36.	Arrange the following in decreasing order of their atomic radii: B, O, N, F.
Answer» Arrange the following in decreasing order of their atomic radii: B, O, N, F.

Discussion

37.	Consider one mole of helium gas enclosed in a container at initial pressure P1 and volume V1 . Itexpands isothermally to volume 4V1. After this, the gas expands adiabatically and its volumebecomes 32V1. The work done by the gas during isothermal and adiabatic expansion processes are Wiso and Wadia respectively. If the ratioWisoWadia=fln2, then f is
Answer» Consider one mole of helium gas enclosed in a container at initial pressure $P_{1}$ and volume $V_{1}$ . It expands isothermally to volume $4 V_{1}$ . After this, the gas expands adiabatically and its volume becomes $32 V_{1}$ . The work done by the gas during isothermal and adiabatic expansion processes are $W_{i s o}$ and $W_{a d i a}$ respectively. If the ratio $\frac{W_{i s o}}{W_{a d i a}} = f ln 2$ , then $f$ is

Discussion

38.	In hydrolysis is there always no change in oxidation state?
Answer» In hydrolysis is there always no change in oxidation state?

Discussion

39.	hybridisation of Co in \{Co(NH3)4\}^{3-} i
Answer» hybridisation of Co in \{Co(NH3)4\}^{3-} i

Discussion

40.	Which of the following methods of preparation of amines will give same numberof carbon atoms in the chain of amines as in the reactant?(i) Reaction of nitrite with LiAlH4.(ii) Reaction of amide with LiAlH4 followed by treatment with water.(iii) Heating alkylhalide with potassium salt of phthalimide followed byhydrolysis.(iv) Treatment of amide with bromine in aqueous solution of sodium hydroxide.
Answer» Which of the following methods of preparation of amines will give same number of carbon atoms in the chain of amines as in the reactant? (i) Reaction of nitrite with LiAlH4. (ii) Reaction of amide with LiAlH4 followed by treatment with water. (iii) Heating alkylhalide with potassium salt of phthalimide followed by hydrolysis. (iv) Treatment of amide with bromine in aqueous solution of sodium hydroxide.

Discussion

41.	Differentiation of1. y=5 sinx . ex5 is a constant.So its differentiation should be 0,right.
Answer» Differentiation of 1. y=5 sinx . ex 5 is a constant.So its differentiation should be 0,right.

Discussion

42.	Identifythe reagents shown in bold in the following equations as nucleophilesor electrophiles:
Answer» Identify the reagents shown in bold in the following equations as nucleophiles or electrophiles:

42.

Identifythe reagents shown in bold in the following equations as nucleophilesor electrophiles:

Answer»

Identify
the reagents shown in bold in the following equations as nucleophiles
or electrophiles:

Discussion

43.	What is orbital velocity and how to derive its unit?
Answer» What is orbital velocity and how to derive its unit?

Discussion

44.	Which of the following has maximum number of molecules:
Answer» Which of the following has maximum number of molecules:

Discussion

45.	In spinel geometry A(+2) should be larger than B(+3) {as more positive charge reduce size of ion} ,then why A(+2) is found in tetrahedral void which is smaller than octahedral and vice versa ??
Answer» In spinel geometry A(+2) should be larger than B(+3) {as more positive charge reduce size of ion} ,then why A(+2) is found in tetrahedral void which is smaller than octahedral and vice versa ??

Discussion

46.	The element X,Y,Z and T have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element:X:2,8,4Y:2,8,8Z:2,8,8,1T:2,8,8,7
Answer» The element $X, Y, Z$ and $T$ have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element: $X : 2, 8, 4$ $Y : 2, 8, 8$ $Z : 2, 8, 8, 1$ $T : 2, 8, 8, 7$

Discussion

47.	Two moles of an ideal monotonic gas is expanded such that initial pressure is halved. The initial state is (PoVo) and the thermodynamic process follows the equation Pt=constant. The change in internal energy of the gas is
Answer» Two moles of an ideal monotonic gas is expanded such that initial pressure is halved. The initial state is (PoVo) and the thermodynamic process follows the equation Pt=constant. The change in internal energy of the gas is

Discussion

48.	On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is
Answer» On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is

Discussion

49.	28. Which has lowest radius? A)3rd shell of H B)4th shell of He+ C)4th shell of Li2+ D)4th shell of Be3+
Answer» 28. Which has lowest radius? A)3rd shell of H B)4th shell of He+ C)4th shell of Li2+ D)4th shell of Be3+

Discussion

50.	Which of the following ligand has the highest ligand field strength among the following?
Answer» Which of the following ligand has the highest ligand field strength among the following?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question 5Find the values of the letters in the following and give reasons for the steps involved. A B × 3–––––––– C A B––––––––

An alloy of Iron(50%), nickel (45%) and manganese (0.3%) has a density of 8 g/cm3. How many iron atoms are there on a block of alloy 10 cm×20 cm×15 cm? (Avogardo's no=NA=6.023×1023)

Q1) Among CH4 and O2 which have greater vandarwall cons†an t 'a' and why

Aniline in a set of reactions furnished a major product D.The structure of product D would be:

ZnS+O2=ZnO+CO2

Which one of the following reactions of Xenon compounds iss not feasible

Find the correct graphs regarding the equilibrium state:

How to find molecular mass

What is Oleum? What is the need to calculate the %of free SO3(sulphur trioxide) in Oleum?

Temperature of one mol of an ideal gas is raised by 2°C by a process. The internal energy change would be maximum if the process isOptions: Isochoric Adiabatic Isobaric Equal for any process

what is the covalency of boron

5.Azimuthal quantum numbers for s, P, d, f subshells

18. Give the mechanism of rusting 1. 4 2. 6 3. 8 4. 12 which option is correct and why ?

The compound that has the highest lattice energy is:

The number of stereoisomers in the given compound is:

1 A certain mass of a gas occupies volume 2 litre at STP keeping the pressure constant at what temperature would the gas occupies volume 4L 2 one litre of unknown gas weighs 1.25 gram at ntp which of the following gas pretend to be the above data

Ten percent of a radioactive sample has decayed in 1 day. After 2 days, the decayed percentage of nuclei will be

Express 1 metric tonne in kg.

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent

A radiation of energy E falls on a metal whose threshold energy is E0. Then, the kinetic energy is given as:

CFSE value of d6 octahedral complex at weak field is −xΔo. x is

How to find out the stability of carbocation?How to find out hybridization in carbon atoms?How to find out the major and minor products otherthan chlorination and bromination?

In gun barrel the steel used is

Element ‘B’ forms ccp structure and ‘A’ occupies half of the octahedral voids, while oxygen atoms occupy all the tetrahedral voids. The structure of bimetallic oxide is:

Calculate the mole fraction of glycerin C3H5(OH)3 in a 100 g solution containing 33 g of glycerin, 60 g isopropyl alcohol and rest water. (Round off to one decimel place)

What will be the products of this reaction?

The solubility of salts of weak acids :(1)Increases at lower pH(2)Increases at higher pH(3)Is maximum at neutral pH(4)Doesn't depend on pH

In a titration between oxalic acid and acidified potassium permanganate, the manganous salt is formed which catalyses the reaction. The manganous salt is

The relative lowering of vapour pressure of a liquid in a closed container is a) alpha Xsolute b) alpha 1/Xsolute c) =Xsolute d) alpha molality

Maximum number of covalent bonds formed by N and P respectively are:

4. For A2 (g)=2A(g) type process of 'D' is normal vapour density of A2 and 'd' is vapour density of equilibrium mixture,and (alpha) is degree of dissociation, then which of the following graph is correct

ntElement A reacts with oxygen to form A2O3 if 0.359 grams of A reactsnntto give 0.559 grams of the compound. Find the atomic weight of A?n

40.Resonance hybrid of nitrate ion

Q- If |A-B|=|A+B| then angle between A and B is ___. Explain with reasons.

Any organic compound contains 49.3% carbon, 6.84% H and vapour density is 73. Molecular formula of compound is:- (1) C6H10O4, (2) C4H8O4, (3) C3H6O4, (4) C5H10O2.

Arrange the following in decreasing order of their atomic radii: B, O, N, F.

In hydrolysis is there always no change in oxidation state?

hybridisation of Co in \{Co(NH3)4\}^{3-} i

Differentiation of1. y=5 sinx . ex5 is a constant.So its differentiation should be 0,right.

Identifythe reagents shown in bold in the following equations as nucleophilesor electrophiles:

What is orbital velocity and how to derive its unit?

Which of the following has maximum number of molecules:

In spinel geometry A(+2) should be larger than B(+3) {as more positive charge reduce size of ion} ,then why A(+2) is found in tetrahedral void which is smaller than octahedral and vice versa ??

The element X,Y,Z and T have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element:X:2,8,4Y:2,8,8Z:2,8,8,1T:2,8,8,7

Two moles of an ideal monotonic gas is expanded such that initial pressure is halved. The initial state is (PoVo) and the thermodynamic process follows the equation Pt=constant. The change in internal energy of the gas is

On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is

28. Which has lowest radius? A)3rd shell of H B)4th shell of He+ C)4th shell of Li2+ D)4th shell of Be3+

Which of the following ligand has the highest ligand field strength among the following?