46295 + Interview Questions in Chemistry

1.	How can we understand/define the enzymes?
Answer» How can we understand/define the enzymes?

Discussion

2.	3. What are metallic hydroxides and metallic oxides and metallic hydride
Answer» 3. What are metallic hydroxides and metallic oxides and metallic hydride

Discussion

3.	When 2ethyl3methyl1pentene is treated with CH3OH in H2SO4 How many different methoxy ether would be formed in significant amount
Answer» When 2ethyl3methyl1pentene is treated with CH3OH in H2SO4 How many different methoxy ether would be formed in significant amount

Discussion

4.	The coordination number for a ccp lattice is :
Answer» The coordination number for a ccp lattice is :

Discussion

5.	Write the chemicalequation for preparing sodium soap from glyceryl oleate and glycerylpalmitate. Structural formulae of these compounds are given below.(i) (ii)
Answer» Write the chemical equation for preparing sodium soap from glyceryl oleate and glyceryl palmitate. Structural formulae of these compounds are given below. (i) (ii)

5.

Write the chemicalequation for preparing sodium soap from glyceryl oleate and glycerylpalmitate. Structural formulae of these compounds are given below.(i) (ii)

Answer»

Write the chemical
equation for preparing sodium soap from glyceryl oleate and glyceryl
palmitate. Structural formulae of these compounds are given below.

(i)

(ii)

Discussion

6.	structure of a mixed oxide is cubic closed packed. the unit cell of mixed oxide is composed of oxide iond. one fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are oupied by monovalent metal B. the formula of oxide is
Answer» structure of a mixed oxide is cubic closed packed. the unit cell of mixed oxide is composed of oxide iond. one fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are oupied by monovalent metal B. the formula of oxide is

Discussion

7.	A mixture of agcl and agbr contain 60.2 percent Ag . Calculate weight of agcl and agbr in 100 gram of that mixture
Answer» A mixture of agcl and agbr contain 60.2 percent Ag . Calculate weight of agcl and agbr in 100 gram of that mixture

Discussion

8.

Match List-I with List-IIList-I (Chemical reaction)List-II (Reagent used)(a)CH3COOCH2CH3→CH3CH2OH(i)CH3MgBr/H3O+ (1 equivalent)(b) CH3COOHCH3→CH3CHO(ii)H2SO4/H2O(c) CH3C≡N→CH3CHO (iii)DIBAL−H/H2O(d) CH3C≡N→CH3COCH3(iv) SnCl2,HCl/H2OChoose the most appropriate match.

Answer»

Match List-I with List-II

List-I (Chemical reaction)	List-II (Reagent used)
(a) $C H_{3} C O O C H_{2} C H_{3} \to C H_{3} C H_{2} O H$	(i) $C H_{3} M g B r / H_{3} O^{+}$ (1 equivalent)
(b) $C H_{3} C O O H C H_{3} \to C H_{3} C H O$	(ii) $H_{2} S O_{4} / H_{2} O$
(c) $C H_{3} C \equiv N \to C H_{3} C H O$	(iii) $D I B A L - H / H_{2} O$
(d) $C H_{3} C \equiv N \to C H_{3} C O C H_{3}$	(iv) $S n C l_{2}, H C l / H_{2} O$

Choose the most appropriate match.

Discussion

9.	If one of the twoelectrons of a H2 molecule is removed, we get a hydrogenmolecular ion.In the ground state of an,the two protons are separated by roughly 1.5 Å, and theelectron is roughly 1 Å from each proton. Determine thepotential energy of the system. Specify your choice of the zero ofpotential energy.
Answer» If one of the two electrons of a H₂molecule is removed, we get a hydrogen molecular ion. In the ground state of an, the two protons are separated by roughly 1.5 Å, and the electron is roughly 1 Å from each proton. Determine the potential energy of the system. Specify your choice of the zero of potential energy.

Discussion

10.	Locate the centre of mass of one quarter of a disc of radius r
Answer» Locate the centre of mass of one quarter of a disc of radius r

Discussion

11.	how many hyperconjugating structures are there in ch2=ch2 or ethene?is it stable??
Answer» how many hyperconjugating structures are there in ch2=ch2 or ethene?is it stable??

Discussion

12.	What is the shape of the molecules which have sp3d hybridization?
Answer» What is the shape of the molecules which have ${s p}^{3} d$ hybridization?

Discussion

13.	Match the conversion in Column I with the type(s) of reaction(s) given in Column II. Column IColumn IIA.PbS⟶PbOp.RoastingB.CaCO3⟶CaOq.CalcinationC.ZnS⟶Znr.Carbon reductionD.Cu2S⟶Cus.Self−reduction
Answer» Match the conversion in $C o l u m n I$ with the type(s) of reaction(s) given in $C o l u m n I I$ . $\begin{matrix} C o l u m n I & C o l u m n I I A . & P b S ⟶ P b O & p . & R o a s t i n g B . & C a C O_{3} ⟶ C a O & q . & C a l c i n a t i o n C . & Z n S ⟶ Z n & r . & C a r b o n r e d u c t i o n D . & C u_{2} S ⟶ C u & s . & S e l f - r e d u c t i o n \end{matrix}$

Discussion

14.	Give the equations of reactions for the preparation of phenol from cumene.
Answer» Give the equations of reactions for the preparation of phenol from cumene.

Discussion

15.	The molal boiling point constant for water is 0.513°C kgmol-1. When 0.1 mole of sugar is dissolved in 200g of water, the solution boils under a pressure of 1 atm at:
Answer» The molal boiling point constant for water is 0.513°C kgmol^-1. When 0.1 mole of sugar is dissolved in 200g of water, the solution boils under a pressure of 1 atm at:

Discussion

16.	Which of the following are benzenoid compounds?
Answer» Which of the following are benzenoid compounds?

Discussion

17.	Choose the correct expression of Kp for reaction,4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)
Answer» Choose the correct expression of $K_{p}$ for reaction, $4 N H_{3} (g) + 5 O_{2} (g) ⇌ 4 N O (g) + 6 H_{2} O (g)$

Discussion

18.	The compound with the lowest boiling point is:
Answer» The compound with the lowest boiling point is:

Discussion

19.	40. If a sample of ferric sulphate contain 7.2 moles of oxygen atom then the number of sulphur atoms in the given sample
Answer» 40. If a sample of ferric sulphate contain 7.2 moles of oxygen atom then the number of sulphur atoms in the given sample

Discussion

20.	conditions for a compound to be planar
Answer» conditions for a compound to be planar

Discussion

21.	acetic acid undergoes dimerisation in benzene. what will be its vant hoff factor if its alpha is 8%
Answer» acetic acid undergoes dimerisation in benzene. what will be its vant hoff factor if its alpha is 8%

Discussion

22.	define average molar mass.
Answer» define average molar mass.

Discussion

23.	The radioisotopes used for diagnosis in nuclear medicine
Answer» The radioisotopes used for diagnosis in nuclear medicine

Discussion

24.	Arrange CaCO3, KHCO3, NaHCO3, Na2CO3 in increasing order of solubility and explain the reason for the arrangement.
Answer» Arrange CaCO₃, KHCO₃, NaHCO₃, Na₂CO₃ in increasing order of solubility and explain the reason for the arrangement.

Discussion

25.	The Enthalpy change does not depend on the:
Answer» The Enthalpy change does not depend on the:

Discussion

26.	The number of P−O−P bonds in cyclic meta phosphoric acid is :
Answer» The number of $P - O - P$ bonds in cyclic meta phosphoric acid is :

Discussion

27.	Freundlich adsorption isotherm is a plot between:
Answer» Freundlich adsorption isotherm is a plot between:

Discussion

28.	12. Which is incorrect? 1. Decreasing IE2 : F,N,O 2. Increasing atomic size : Be,B,Li,Na 3. Metallic Bond Strength : Na
Answer» 12. Which is incorrect? 1. Decreasing IE2 : F,N,O 2. Increasing atomic size : Be,B,Li,Na 3. Metallic Bond Strength : Na

Discussion

29.	Is HCOONa is acidic salt or not? and ho
Answer» Is HCOONa is acidic salt or not? and ho

Discussion

30.	On heating Which of these is least likely to release co2BeCO3Li2CO3CaCO3K2CO3
Answer» On heating Which of these is least likely to release co2 BeCO3 Li2CO3 CaCO3 K2CO3

Discussion

31.	if alpha moles of a monoatomic gas are mixed with beta moles of a polyatomic gas and mixture behaves like diatomic gas then ( neglect the vibrational mode of freedom
Answer» if alpha moles of a monoatomic gas are mixed with beta moles of a polyatomic gas and mixture behaves like diatomic gas then ( neglect the vibrational mode of freedom

Discussion

32.	2. Derive in fcc .nearest tetrahedral and octahedral void distance.
Answer» 2. Derive in fcc .nearest tetrahedral and octahedral void distance.

Discussion

33.	What is reaction of an aldehyde with peroxide acid(like PhCO3H). Will it be same like Baeyer villiger oxidation?
Answer» What is reaction of an aldehyde with peroxide acid(like PhCO3H). Will it be same like Baeyer villiger oxidation?

Discussion

34.	The properties of most of the ionic solids deviate from their ideal ionic character because the lattice undergoes some distortion. Cations are usually smaller than anions and have a higher effective nuclear charge. The outer electron cloud in a cation is more firmly held than in an anion. The loose electron cloud of an anion, when attracted by the electron cloud of a cation, gets distorted. This phenomenon is known as polarization. Due to this phenomenon, the electron cloud of an anion shifts towards the cation which decreases both the magnitude of positive charge on the cation and the negative charge on the anion. In other words, covalent character develops in the ionic bond.Which of the following is an ionic compound?
Answer» The properties of most of the ionic solids deviate from their ideal ionic character because the lattice undergoes some distortion. Cations are usually smaller than anions and have a higher effective nuclear charge. The outer electron cloud in a cation is more firmly held than in an anion. The loose electron cloud of an anion, when attracted by the electron cloud of a cation, gets distorted. This phenomenon is known as polarization. Due to this phenomenon, the electron cloud of an anion shifts towards the cation which decreases both the magnitude of positive charge on the cation and the negative charge on the anion. In other words, covalent character develops in the ionic bond. Which of the following is an ionic compound?

Discussion

35.	Buffer capacity is maximum when concentration of acid is same as concentration of salt in case of acidic buffer. Why?
Answer» Buffer capacity is maximum when concentration of acid is same as concentration of salt in case of acidic buffer. Why?

Discussion

36.	A hollow metal sphere of mass m has an instantaneous upward acceleration 'a' when released from rest fully submerged in a liquid of density d1. If the density of the metal is d2 find the volume of the cavity in the sphere?
Answer» A hollow metal sphere of mass m has an instantaneous upward acceleration 'a' when released from rest fully submerged in a liquid of density $d_{1}$ . If the density of the metal is $d_{2}$ find the volume of the cavity in the sphere?

Discussion

37.	1 - Bromo-3-chlorocyclobutane when treated with two equivalents of Na, in the presence of ether which of the following will be formed?
Answer» 1 - Bromo-3-chlorocyclobutane when treated with two equivalents of Na, in the presence of ether which of the following will be formed?

Discussion

38.	A compound contains equal masses of the elements A, B & C. If the gram atomic masses of A, B & C are 60 g, 20 g & 40 g respectively. Determine the molecular formula of the compound if the molecular mass is 720 g.
Answer» A compound contains equal masses of the elements A, B & C. If the gram atomic masses of A, B & C are 60 g, 20 g & 40 g respectively. Determine the molecular formula of the compound if the molecular mass is 720 g.

Discussion

39.	What is the mass of the precipitate formed when 50 ml of 16.9% ( w/v ) solution of AgNO3 is mixed with 50 ml of 5.8%(w/v) NaCl solution ?
Answer» What is the mass of the precipitate formed when 50 ml of 16.9% ( w/v ) solution of AgNO3 is mixed with 50 ml of 5.8%(w/v) NaCl solution ?

Discussion

40.	20. Solubility product of the salt,AxBy will be represented most suitablg if the solubility is represented by S is
Answer» 20. Solubility product of the salt,AxBy will be represented most suitablg if the solubility is represented by S is

Discussion

41.	Solve 49π-98/49π
Answer» Solve 49π-98/49π

Discussion

42.	ntIn seimens ozoniser,60 O2 is converted to ozone.How many moles of ozone will be obtained from 10 mole of O2?n
Answer» ntIn seimens ozoniser,60 O2 is converted to ozone.How many moles of ozone will be obtained from 10 mole of O2?n

Discussion

43.	6 when ClO can act as oxidising agents then how can Cl,I,Br can act as oxidising agents in dispropotionation reactions then why cant Flourine because according to this reaction a element must exist in its intermediate form?
Answer» 6 when ClO can act as oxidising agents then how can Cl,I,Br can act as oxidising agents in dispropotionation reactions then why cant Flourine because according to this reaction a element must exist in its intermediate form?

Discussion

44.	The molarity is defined as the number of moles of solute present in
Answer» The molarity is defined as the number of moles of solute present in

Discussion

45.	Writethe IUPAC names of the following ketones and aldehydes. Whereverpossible, give also common names.(i) CH3CO(CH2)4CH3 (ii) CH3CH2CHBrCH2CH(CH3)CHO(iii) CH3(CH2)5CHO (iv) Ph-CH=CH-CHO(v) (vi) PhCOPh
Answer» Write the IUPAC names of the following ketones and aldehydes. Wherever possible, give also common names. (i) CH₃CO(CH₂)₄CH₃ (ii) CH₃CH₂CHBrCH₂CH(CH₃)CHO (iii) CH₃(CH₂)₅CHO (iv) Ph-CH=CH-CHO (v) (vi) PhCOPh

45.

Writethe IUPAC names of the following ketones and aldehydes. Whereverpossible, give also common names.(i) CH3CO(CH2)4CH3 (ii) CH3CH2CHBrCH2CH(CH3)CHO(iii) CH3(CH2)5CHO (iv) Ph-CH=CH-CHO(v) (vi) PhCOPh

Answer»

Write
the IUPAC names of the following ketones and aldehydes. Wherever
possible, give also common names.

(i)
CH₃CO(CH₂)₄CH₃
(ii) CH₃CH₂CHBrCH₂CH(CH₃)CHO

(iii)
CH₃(CH₂)₅CHO
(iv) Ph-CH=CH-CHO

(v)
(vi) PhCOPh

Discussion

46.	Concentrated aqueous solution sulphic acid 98% H2SO4 by mass and has a density of 1.80 gm ml-.volume of acid required to make 1 litre of 0.1M H2SO4 solution (1)11.10 ml (2)16.65ml (3)22.20 ml (4)5.55 ml
Answer» Concentrated aqueous solution sulphic acid 98% H2SO4 by mass and has a density of 1.80 gm ml-.volume of acid required to make 1 litre of 0.1M H2SO4 solution (1)11.10 ml (2)16.65ml (3)22.20 ml (4)5.55 ml

Discussion

47.	16. Explain Bond order of B2.
Answer» 16. Explain Bond order of B2.

Discussion

48.	ntn ntnttntttnttttntttttWhat will be the osmotic pressure of 0.02M monoacidic base if it's pH is 12 at 300 K?ntttnttntnt nttntttnttttntttttntttttt(1)ntttttntttttt0.74 atmnttttnttttntttttntttttt(2)ntttttntttttt0.37 atmnttttnttttntttttntttttt(3)ntttttntttttt3.6 atmnttttnttttntttttntttttt(4)ntttttnttttttNone of the aboventtttntttnttntnn ntn
Answer» ntn ntnttntttnttttntttttWhat will be the osmotic pressure of 0.02M monoacidic base if it's pH is 12 at 300 K?ntttnttntnt nttntttnttttntttttntttttt(1)ntttttntttttt0.74 atmnttttnttttntttttntttttt(2)ntttttntttttt0.37 atmnttttnttttntttttntttttt(3)ntttttntttttt3.6 atmnttttnttttntttttntttttt(4)ntttttnttttttNone of the aboventtttntttnttntnn ntn

Discussion

49.	Calculate the average molecular weight of the mixture of 25%CH4 and 75%SO2 by volume.
Answer» Calculate the average molecular weight of the mixture of 25%CH4 and 75%SO2 by volume.

Discussion

50.	In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C6H12O6. How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be 1 g cm−3. Rreaction that takes place during photosynthesis is:6CO2+6H2O ⟶ C6H12O6+6O2
Answer» In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula $C_{6} H_{12} O_{6}$ . How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be $1 g c m^{- 3}$ . Rreaction that takes place during photosynthesis is: $6 C O_{2} + 6 H_{2} O$ $⟶$ $C_{6} H_{12} O_{6} + 6 O_{2}$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How can we understand/define the enzymes?

3. What are metallic hydroxides and metallic oxides and metallic hydride

When 2ethyl3methyl1pentene is treated with CH3OH in H2SO4 How many different methoxy ether would be formed in significant amount

The coordination number for a ccp lattice is :

Write the chemicalequation for preparing sodium soap from glyceryl oleate and glycerylpalmitate. Structural formulae of these compounds are given below.(i) (ii)

structure of a mixed oxide is cubic closed packed. the unit cell of mixed oxide is composed of oxide iond. one fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are oupied by monovalent metal B. the formula of oxide is

A mixture of agcl and agbr contain 60.2 percent Ag . Calculate weight of agcl and agbr in 100 gram of that mixture

Match List-I with List-IIList-I (Chemical reaction)List-II (Reagent used)(a)CH3COOCH2CH3→CH3CH2OH(i)CH3MgBr/H3O+ (1 equivalent)(b) CH3COOHCH3→CH3CHO(ii)H2SO4/H2O(c) CH3C≡N→CH3CHO (iii)DIBAL−H/H2O(d) CH3C≡N→CH3COCH3(iv) SnCl2,HCl/H2OChoose the most appropriate match.

Locate the centre of mass of one quarter of a disc of radius r

how many hyperconjugating structures are there in ch2=ch2 or ethene?is it stable??

What is the shape of the molecules which have sp3d hybridization?

Match the conversion in Column I with the type(s) of reaction(s) given in Column II. Column IColumn IIA.PbS⟶PbOp.RoastingB.CaCO3⟶CaOq.CalcinationC.ZnS⟶Znr.Carbon reductionD.Cu2S⟶Cus.Self−reduction

Give the equations of reactions for the preparation of phenol from cumene.

The molal boiling point constant for water is 0.513°C kgmol-1. When 0.1 mole of sugar is dissolved in 200g of water, the solution boils under a pressure of 1 atm at:

Which of the following are benzenoid compounds?

Choose the correct expression of Kp for reaction,4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)

The compound with the lowest boiling point is:

40. If a sample of ferric sulphate contain 7.2 moles of oxygen atom then the number of sulphur atoms in the given sample

conditions for a compound to be planar

acetic acid undergoes dimerisation in benzene. what will be its vant hoff factor if its alpha is 8%

define average molar mass.

The radioisotopes used for diagnosis in nuclear medicine

Arrange CaCO3, KHCO3, NaHCO3, Na2CO3 in increasing order of solubility and explain the reason for the arrangement.

The Enthalpy change does not depend on the:

The number of P−O−P bonds in cyclic meta phosphoric acid is :

Freundlich adsorption isotherm is a plot between:

12. Which is incorrect? 1. Decreasing IE2 : F,N,O 2. Increasing atomic size : Be,B,Li,Na 3. Metallic Bond Strength : Na

Is HCOONa is acidic salt or not? and ho

On heating Which of these is least likely to release co2BeCO3Li2CO3CaCO3K2CO3

if alpha moles of a monoatomic gas are mixed with beta moles of a polyatomic gas and mixture behaves like diatomic gas then ( neglect the vibrational mode of freedom

2. Derive in fcc .nearest tetrahedral and octahedral void distance.

What is reaction of an aldehyde with peroxide acid(like PhCO3H). Will it be same like Baeyer villiger oxidation?

Buffer capacity is maximum when concentration of acid is same as concentration of salt in case of acidic buffer. Why?

A hollow metal sphere of mass m has an instantaneous upward acceleration 'a' when released from rest fully submerged in a liquid of density d1. If the density of the metal is d2 find the volume of the cavity in the sphere?

1 - Bromo-3-chlorocyclobutane when treated with two equivalents of Na, in the presence of ether which of the following will be formed?

A compound contains equal masses of the elements A, B &amp; C. If the gram atomic masses of A, B &amp; C are 60 g, 20 g &amp; 40 g respectively. Determine the molecular formula of the compound if the molecular mass is 720 g.

What is the mass of the precipitate formed when 50 ml of 16.9% ( w/v ) solution of AgNO3 is mixed with 50 ml of 5.8%(w/v) NaCl solution ?

20. Solubility product of the salt,AxBy will be represented most suitablg if the solubility is represented by S is

Solve 49π-98/49π

ntIn seimens ozoniser,60 O2 is converted to ozone.How many moles of ozone will be obtained from 10 mole of O2?n

6 when ClO can act as oxidising agents then how can Cl,I,Br can act as oxidising agents in dispropotionation reactions then why cant Flourine because according to this reaction a element must exist in its intermediate form?

The molarity is defined as the number of moles of solute present in

Writethe IUPAC names of the following ketones and aldehydes. Whereverpossible, give also common names.(i) CH3CO(CH2)4CH3 (ii) CH3CH2CHBrCH2CH(CH3)CHO(iii) CH3(CH2)5CHO (iv) Ph-CH=CH-CHO(v) (vi) PhCOPh

Concentrated aqueous solution sulphic acid 98% H2SO4 by mass and has a density of 1.80 gm ml-.volume of acid required to make 1 litre of 0.1M H2SO4 solution (1)11.10 ml (2)16.65ml (3)22.20 ml (4)5.55 ml

16. Explain Bond order of B2.

Calculate the average molecular weight of the mixture of 25%CH4 and 75%SO2 by volume.

A compound contains equal masses of the elements A, B & C. If the gram atomic masses of A, B & C are 60 g, 20 g & 40 g respectively. Determine the molecular formula of the compound if the molecular mass is 720 g.