46295 + Interview Questions in Chemistry

1.	A condensation polymer among the following polymers is
Answer» A condensation polymer among the following polymers is

Discussion

2.	23. Two elemnt form compounds of formula AB2 and AB4.when dissoved in 20g of benzene 1g of AB2 lower freezing point by 2.3C and 1g of AB4 lower freezing point by 1.3C.the Kf of benzene is 5.1.the atomic mass of A and B are
Answer» 23. Two elemnt form compounds of formula AB2 and AB4.when dissoved in 20g of benzene 1g of AB2 lower freezing point by 2.3C and 1g of AB4 lower freezing point by 1.3C.the Kf of benzene is 5.1.the atomic mass of A and B are

Discussion

3.	22. Between CaF2 and CaI2 which is having more boiling point?explain in detail?
Answer» 22. Between CaF2 and CaI2 which is having more boiling point?explain in detail?

Discussion

4.	why tricyclopropylcation is more stable than triphenylcation?
Answer» why tricyclopropylcation is more stable than triphenylcation?

Discussion

5.	The main product of the reaction CH3CH2Br and AgCN is:
Answer» The main product of the reaction $C H_{3} C H_{2} B r$ and AgCN is:

Discussion

6.	5. General Solution of Tan2x=3Tanx
Answer» 5. General Solution of Tan2x=3Tanx

Discussion

7.	Explain in an easier way what is a functional group?
Answer» Explain in an easier way what is a functional group?

Discussion

8.	Which of the following is/are not correct about physical adsorptioni) It is reversibleii) It involves the formation of multilayersiii) Heat of adsorption is usually lowiv) It is highly specific
Answer» Which of the following is/are not correct about physical adsorption i) It is reversible ii) It involves the formation of multilayers iii) Heat of adsorption is usually low iv) It is highly specific

8.

Which of the following is/are not correct about physical adsorptioni) It is reversibleii) It involves the formation of multilayersiii) Heat of adsorption is usually lowiv) It is highly specific

Answer»

Which of the following is/are not correct about physical adsorption

i) It is reversible

ii) It involves the formation of multilayers

iii) Heat of adsorption is usually low

iv) It is highly specific

Discussion

9.	Two solids dissociated as followsA(s)⇌B(g)+C(g);KP1=xatm2D(s)⇌C(g)+E(g);KP2=xatm2The total pressure when both the solids dissociate simultaneously is:
Answer» Two solids dissociated as follows $A (s) ⇌ B (g) + C (g); K_{P 1} = x a t m^{2}$ $D (s) ⇌ C (g) + E (g); K_{P 2} = x a t m^{2}$ The total pressure when both the solids dissociate simultaneously is:

9.

Two solids dissociated as followsA(s)⇌B(g)+C(g);KP1=xatm2D(s)⇌C(g)+E(g);KP2=xatm2The total pressure when both the solids dissociate simultaneously is:

Answer»

Two solids dissociated as follows

$A (s) ⇌ B (g) + C (g); K_{P 1} = x a t m^{2}$

$D (s) ⇌ C (g) + E (g); K_{P 2} = x a t m^{2}$

The total pressure when both the solids dissociate simultaneously is:

Discussion

10.	[EDTA]4− is a
Answer» $[E D T A]^{4 -}$ is a

Discussion

11.	For an isolated system:(1) q = 0 and w = 0 (2) q is not equal t 0 and w =0(3) q = 0 and w not equal to o(4) q # 0 and w not= 0
Answer» For an isolated system:(1) q = 0 and w = 0 (2) q is not equal t 0 and w =0(3) q = 0 and w not equal to o(4) q # 0 and w not= 0

Discussion

12.	Why hybridization of [Cr(H2O)6]³ is sp³d² and not d²sp³??
Answer» Why hybridization of [Cr(H2O)6]³ is sp³d² and not d²sp³??

Discussion

13.	How AlCl3 have 6 electrons in last shell??
Answer» How AlCl3 have 6 electrons in last shell??

Discussion

14.	Identify A in the given diagram.
Answer» Identify A in the given diagram.

Discussion

15.	Explain determination of position of element in periodic table once again in more detail
Answer» Explain determination of position of element in periodic table once again in more detail

Discussion

16.	what are amphtraic oxide
Answer» what are amphtraic oxide

Discussion

17.	Which of the following monosaccharides are present as five-membered cyclic structure (furanose structure)? (a) Ribose (b) Glucose (c) Fructose (d) Galactose
Answer» Which of the following monosaccharides are present as five-membered cyclic structure (furanose structure)? (a) Ribose (b) Glucose (c) Fructose (d) Galactose

Discussion

18.	Calculate the work done in an open vessel at 300 K, when 168 g iron having molar mass 56 g/mol reacts with dil.HClR≈2 cal/mol K
Answer» Calculate the work done in an open vessel at 300 K, when $168 g$ iron having molar mass $56 g / m o l$ reacts with $d i l . H C l$ $R \approx 2 c a l / m o l K$

Discussion

19.	How many photons of light having frequency 0.53 Hz are required to break a C−O bond, if the bond energy of C−O bond is 350 kJ/mol?
Answer» How many photons of light having frequency 0.53 Hz are required to break a $C - O$ bond, if the bond energy of $C - O$ bond is 350 kJ/mol?

Discussion

20.	If you are provided with a 2.5 M NaOH solution having a density of 1.6 g/mL, then find the molality of solution. (Atomic mass of Na=23 g)
Answer» If you are provided with a $2.5 M$ NaOH solution having a density of $1.6 g / m L$ , then find the molality of solution. (Atomic mass of $N a = 23 g$ )

Discussion

21.	A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis, then :
Answer» A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis, then :

Discussion

22.	20 ml of HCl solution requires 19.85 ml of 0.01 M NaOH solution for complete neutralization. The molarity of HCl solution is
Answer» 20 ml of HCl solution requires 19.85 ml of 0.01 M NaOH solution for complete neutralization. The molarity of HCl solution is

Discussion

23.	At 250C, 50 g of iron reacts with HCl to form FeCl2. The evolved hydrogen gas expands against a constant pressure of 1 bar. The work done by the gas during this expansion is ______J(Round off to the Nearest Integer).[Given : R=8.314Jmol−1K−1 Assume, hydrogen is an ideal gas][Atomic mass of Fe is 55.85 u]
Answer» At $25^{0} C$ , $50 g$ of iron reacts with $H C l$ to form $F e C l_{2}$ . The evolved hydrogen gas expands against a constant pressure of 1 bar. The work done by the gas during this expansion is ______J (Round off to the Nearest Integer). [Given : $R = 8.314 J m o l^{- 1} K^{- 1}$ Assume, hydrogen is an ideal gas] [Atomic mass of Fe is 55.85 u]

Discussion

24.	How the molecular mass of an atom is known as gramm atomic mass
Answer» How the molecular mass of an atom is known as gramm atomic mass

Discussion

25.	Cyclohexanol(R)TsCl−−−→ LiAlH4−−−−→PChange in the molecular mass (in amu) of (R) and (P) is:
Answer» $Cyclohexanol (R) T s C l - -- \to L i A l H_{4} - --- \to P$ Change in the molecular mass (in amu) of (R) and (P) is:

Discussion

26.	Assertion: one mole of water molecules at 4°C should have the volume of 18ml.Reason: Water contains H2O molecules bonded to each other by intermolecular hydrogen bonding.Which is true, assertion or reason or both?
Answer» Assertion: one mole of water molecules at 4°C should have the volume of 18ml. Reason: Water contains H2O molecules bonded to each other by intermolecular hydrogen bonding. Which is true, assertion or reason or both?

Discussion

27.	Jahn-Teller effect not observed in high spincomplexes of :-
Answer» Jahn-Teller effect not observed in high spin complexes of :-

Discussion

28.	When 10 ml of a solution of H2O2 is heated strongly, 280 ml of O2 is produced at STP due to the decomposition of all the H2O2 present in the solution. What is molarity of the H2O2 in the solution?
Answer» When 10 ml of a solution of $H_{2} O_{2}$ is heated strongly, 280 ml of $O_{2}$ is produced at STP due to the decomposition of all the $H_{2} O_{2}$ present in the solution. What is molarity of the $H_{2} O_{2}$ in the solution?

Discussion

29.	Which alkene gives a racemic mixture upon reaction with Br2 in CH2Cl2 ?
Answer» Which alkene gives a racemic mixture upon reaction with $B r_{2}$ in $C H_{2} C l_{2}$ ?

Discussion

30.	BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):
Answer» $B L i n d r a l / H_{2} \leftarrow ------ - R - C \equiv C - R N a / N H_{3} - ---- \to$ A and B are geometrical isomers (R - CH = CH - R):

30.

BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):

Answer»

$B L i n d r a l / H_{2} \leftarrow ------ - R - C \equiv C - R N a / N H_{3} - ---- \to$ A and B are geometrical isomers (R - CH = CH - R):

Discussion

31.	One mole of monoatomic ideal gas undergoes a process ABC′ as shown in figure. The maximum temperature of the gas during the process ABC′ is in the form x(PVnR). Find the value of x.
Answer» One mole of monoatomic ideal gas undergoes a process $A B C^{'}$ as shown in figure. The maximum temperature of the gas during the process $A B C^{'}$ is in the form $x (\frac{P V}{n R})$ . Find the value of $x$ .

Discussion

32.	Explain the structure of an atom using a diagram.
Answer» Explain the structure of an atom using a diagram.

Discussion

33.	Does the method of comparing size of two ions based on electron to proton ratio always works ? Because even explains the abnormal case of F- and H - .
Answer» Does the method of comparing size of two ions based on electron to proton ratio always works ? Because even explains the abnormal case of F- and H - .

Discussion

34.	Why is p-dichlorobenzene less soluble in organic solvents than the corresponding o-isomer?
Answer» Why is p-dichlorobenzene less soluble in organic solvents than the corresponding o-isomer?

Discussion

35.	The oxidation number of chromium in chromium oxide peroxide (Cr:O = 1:5) is:
Answer» The oxidation number of chromium in chromium oxide peroxide (Cr:O = 1:5) is:

Discussion

36.	What is the relation between half life and t 90%
Answer» What is the relation between half life and t 90%

Discussion

37.	Which of the following acids is most acidic?
Answer» Which of the following acids is most acidic?

Discussion

38.	47.The nature of pi-bond in perchlorate (ClO4-) ion is what?
Answer» 47.The nature of pi-bond in perchlorate (ClO4-) ion is what?

Discussion

39.	Calculate the number of moles of KMNO4 required to oxidise one mole of SnCl2 in acidic medium
Answer» Calculate the number of moles of KMNO4 required to oxidise one mole of SnCl2 in acidic medium

Discussion

40.	Which of the following has square planar structure?
Answer» Which of the following has square planar structure?

Discussion

41.	20 mL of nitric oxide combines with 10 mL of oxygen at STP to give NO2. The final volume will be?
Answer» 20 mL of nitric oxide combines with 10 mL of oxygen at STP to give $N O_{2}$ . The final volume will be?

Discussion

42.	The crystalline solids have definite orderly arrangement of their constituent particles in three dimensions known as lattice. The smallest repeating part in the lattice is known as unit cell. The unit cell are described as simple cubic face centred and body centred unit cell. For the stable ionic crystalline structures, there is definite radius ratio limit for a cation to fit perfectly in the lattice of anions called radius ratio rule. This also defines the coordination number of an ion. (iii) Gold crystallises in a face centred unit cell. Its edge length is 0.410 nm. The radius of gold atom is:
Answer» The crystalline solids have definite orderly arrangement of their constituent particles in three dimensions known as lattice. The smallest repeating part in the lattice is known as unit cell. The unit cell are described as simple cubic face centred and body centred unit cell. For the stable ionic crystalline structures, there is definite radius ratio limit for a cation to fit perfectly in the lattice of anions called radius ratio rule. This also defines the coordination number of an ion. (iii) Gold crystallises in a face centred unit cell. Its edge length is $0.410 nm$ . The radius of gold atom is:

Discussion

43.	F(×)=x-1/x-3 on [4,5].verify lmvt for the function
Answer» F(×)=x-1/x-3 on [4,5].verify lmvt for the function

Discussion

44.	What is the d orbital configuraton of Tetrachloronickelate(II) ion in term's of t2g and eg?
Answer» What is the d orbital configuraton of Tetrachloronickelate(II) ion in term's of t2g and eg?

Discussion

45.	Which of the following compounds will undergo an SN2 reaction most readly?
Answer» Which of the following compounds will undergo an $S_{N} 2$ reaction most readly?

Discussion

46.	Explainthe fact that in aryl alkyl ethers (i) The alkoxy group activates the benzene ring towards electrophilicsubstitution and (ii) It directs the incoming substituents to ortho and para positions in benzene ring.
Answer» Explain the fact that in aryl alkyl ethers (i) The alkoxy group activates the benzene ring towards electrophilic substitution and (ii) It directs the incoming substituents to ortho and para positions in benzene ring.

46.

Explainthe fact that in aryl alkyl ethers (i) The alkoxy group activates the benzene ring towards electrophilicsubstitution and (ii) It directs the incoming substituents to ortho and para positions in benzene ring.

Answer»

Explain
the fact that in aryl alkyl ethers

(i)
The alkoxy group activates the benzene ring towards electrophilic
substitution and

(ii)
It directs the incoming substituents to ortho and para positions in
benzene ring.

Discussion

47.	Diffentiate between Schottky and Frenkel defect.
Answer» Diffentiate between Schottky and Frenkel defect.

Discussion

48.	Doesthe number of moles of reaction products increase, decrease or remainsame when each of the following equilibria is subjected to a decreasein pressure by increasing the volume?(a)(b)(c)
Answer» Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? (a) (b) (c)

48.

Doesthe number of moles of reaction products increase, decrease or remainsame when each of the following equilibria is subjected to a decreasein pressure by increasing the volume?(a)(b)(c)

Answer»

Does
the number of moles of reaction products increase, decrease or remain
same when each of the following equilibria is subjected to a decrease
in pressure by increasing the volume?

(a)

(b)

(c)

Discussion

49.	Plane of symmetry in 2-3dichloro butane
Answer» Plane of symmetry in 2-3dichloro butane

Discussion

50.	The major product for the following reaction would be:
Answer» The major product for the following reaction would be:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A condensation polymer among the following polymers is

23. Two elemnt form compounds of formula AB2 and AB4.when dissoved in 20g of benzene 1g of AB2 lower freezing point by 2.3C and 1g of AB4 lower freezing point by 1.3C.the Kf of benzene is 5.1.the atomic mass of A and B are

22. Between CaF2 and CaI2 which is having more boiling point?explain in detail?

why tricyclopropylcation is more stable than triphenylcation?

The main product of the reaction CH3CH2Br and AgCN is:

5. General Solution of Tan2x=3Tanx

Explain in an easier way what is a functional group?

Which of the following is/are not correct about physical adsorptioni) It is reversibleii) It involves the formation of multilayersiii) Heat of adsorption is usually lowiv) It is highly specific

Two solids dissociated as followsA(s)⇌B(g)+C(g);KP1=xatm2D(s)⇌C(g)+E(g);KP2=xatm2The total pressure when both the solids dissociate simultaneously is:

[EDTA]4− is a

For an isolated system:(1) q = 0 and w = 0 (2) q is not equal t 0 and w =0(3) q = 0 and w not equal to o(4) q # 0 and w not= 0

Why hybridization of [Cr(H2O)6]³ is sp³d² and not d²sp³??

How AlCl3 have 6 electrons in last shell??

Identify A in the given diagram.

Explain determination of position of element in periodic table once again in more detail

what are amphtraic oxide

Which of the following monosaccharides are present as five-membered cyclic structure (furanose structure)? (a) Ribose (b) Glucose (c) Fructose (d) Galactose

Calculate the work done in an open vessel at 300 K, when 168 g iron having molar mass 56 g/mol reacts with dil.HClR≈2 cal/mol K

How many photons of light having frequency 0.53 Hz are required to break a C−O bond, if the bond energy of C−O bond is 350 kJ/mol?

If you are provided with a 2.5 M NaOH solution having a density of 1.6 g/mL, then find the molality of solution. (Atomic mass of Na=23 g)

A cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis, then :

20 ml of HCl solution requires 19.85 ml of 0.01 M NaOH solution for complete neutralization. The molarity of HCl solution is

How the molecular mass of an atom is known as gramm atomic mass

Cyclohexanol(R)TsCl−−−→ LiAlH4−−−−→PChange in the molecular mass (in amu) of (R) and (P) is:

Assertion: one mole of water molecules at 4°C should have the volume of 18ml.Reason: Water contains H2O molecules bonded to each other by intermolecular hydrogen bonding.Which is true, assertion or reason or both?

Jahn-Teller effect not observed in high spincomplexes of :-

When 10 ml of a solution of H2O2 is heated strongly, 280 ml of O2 is produced at STP due to the decomposition of all the H2O2 present in the solution. What is molarity of the H2O2 in the solution?

Which alkene gives a racemic mixture upon reaction with Br2 in CH2Cl2 ?

BLindral/H2←−−−−−−−R−C≡C−RNa/NH3−−−−−→ A and B are geometrical isomers (R - CH = CH - R):

One mole of monoatomic ideal gas undergoes a process ABC′ as shown in figure. The maximum temperature of the gas during the process ABC′ is in the form x(PVnR). Find the value of x.

Explain the structure of an atom using a diagram.

Does the method of comparing size of two ions based on electron to proton ratio always works ? Because even explains the abnormal case of F- and H - .

Why is p-dichlorobenzene less soluble in organic solvents than the corresponding o-isomer?

The oxidation number of chromium in chromium oxide peroxide (Cr:O = 1:5) is:

What is the relation between half life and t 90%

Which of the following acids is most acidic?

47.The nature of pi-bond in perchlorate (ClO4-) ion is what?

Calculate the number of moles of KMNO4 required to oxidise one mole of SnCl2 in acidic medium

Which of the following has square planar structure?

20 mL of nitric oxide combines with 10 mL of oxygen at STP to give NO2. The final volume will be?

F(×)=x-1/x-3 on [4,5].verify lmvt for the function

What is the d orbital configuraton of Tetrachloronickelate(II) ion in term's of t2g and eg?

Which of the following compounds will undergo an SN2 reaction most readly?

Explainthe fact that in aryl alkyl ethers (i) The alkoxy group activates the benzene ring towards electrophilicsubstitution and (ii) It directs the incoming substituents to ortho and para positions in benzene ring.

Diffentiate between Schottky and Frenkel defect.

Doesthe number of moles of reaction products increase, decrease or remainsame when each of the following equilibria is subjected to a decreasein pressure by increasing the volume?(a)(b)(c)

Plane of symmetry in 2-3dichloro butane

The major product for the following reaction would be: