46295 + Interview Questions in Chemistry

1.	the hybridisation of S in orthorombic sulphar is sp3.How?
Answer» the hybridisation of S in orthorombic sulphar is sp3.How?

Discussion

2.	how many hydrogen are present in ethynyl group
Answer» how many hydrogen are present in ethynyl group

Discussion

3.	Benzene+CH3CH2CH2ClAlCl3−−−−−→(anhyd.)X(major)Br2/hν−−−−→Y(major) Y is:
Answer» $B e n z e n e + C H_{3} C H_{2} C H_{2} C l A l C l_{3} - ---- \to (anhyd.) X (major) B r_{2} / h ν - --- \to Y (major)$ Y is:

Discussion

4.	Give thenumber of electrons in the species,H2 and
Answer» Give the number of electrons in the species, H₂and

Discussion

5.

Écrivez ce message en français correct. Bjr Sophie! ajourd'8 je suis OQP a 2m1 bizz

Answer» Écrivez ce message en français correct.

Bjr Sophie!

ajourd'8 je suis OQP

a 2m1

bizz

Discussion

6.	The species having bond order different from that of CO is
Answer» The species having bond order different from that of CO is

Discussion

7.	A metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with NH4OH and ‘B’ gives white. With KI ‘B’ gives a red precipitate soluble in excess of KI. ‘A’ and ‘B’ are respectively :
Answer» A metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with $N H_{4} O H$ and ‘B’ gives white. With KI ‘B’ gives a red precipitate soluble in excess of $K I$ . ‘A’ and ‘B’ are respectively :

Discussion

8.	49. Conversion of 16.6J to kJ/mole.
Answer» 49. Conversion of 16.6J to kJ/mole.

Discussion

9.	The isotope 125B having a mass 12.014 u undergoes β− decay to 126C. 126C has an excited state of the nucleus (126C∗) at 4.041 MeV above its ground state. If 125B decay to 126C∗, the maximum kinetic energy of the β− particle in units of MeV nearly is (integer only).Take : m(126C)=12.0 u(1u=931.5 MeV/c2,Where c is the speed of light in vacuum)
Answer» The isotope $_{5}^{12} B$ having a mass $12.014 u$ undergoes $β -$ decay to $_{6}^{12} C ._{6}^{12} C$ has an excited state of the nucleus $(_{6}^{12} C^{})$ at $4.041 MeV$ above its ground state. If $_{5}^{12} B$ decay to $_{6}^{12} C^{},$ the maximum kinetic energy of the $β -$ particle in units of $MeV$ nearly is (integer only). Take : $m (_{6}^{12} C) = 12.0 u (1 u = 931.5 MeV / c^{2}, Where c is the speed of light in vacuum)$

Discussion

10.	Which one is the most basic in aqueous solution?
Answer» Which one is the most basic in aqueous solution?

10.

Which one is the most basic in aqueous solution?

Answer»

Which one is the most basic in aqueous solution?

Discussion

11.	CaC2H2O−−→ACu2Cl2−−−−−→NH4OHB. Incorrect statement is
Answer» $C a C_{2} H_{2} O - - \to A C u_{2} C l_{2} - ---- \to N H_{4} O H B .$ Incorrect statement is

11.

CaC2H2O−−→ACu2Cl2−−−−−→NH4OHB. Incorrect statement is

Answer»

$C a C_{2} H_{2} O - - \to A C u_{2} C l_{2} - ---- \to N H_{4} O H B .$ Incorrect statement is

Discussion

12.	What is electronegativity and polarity? What is the difference between them. Also how are they related to each other? And what are the effects of electron releasing and electronic withdrawing groups on both of them and why?
Answer» What is electronegativity and polarity? What is the difference between them. Also how are they related to each other? And what are the effects of electron releasing and electronic withdrawing groups on both of them and why?

Discussion

13.	If V is the observed molar volume of real gas and $V_{id}$ is the molar volume of an ideal gas then Z is___.
Answer» If V is the observed molar volume of real gas and $V_{id}$is the molar volume of an ideal gas then Z is___.

Discussion

14.	To maintain the pH of 7.4 for blood at normal condition which is 2 M in H2CO3 (at equilibrium), what volume of 7.8 M NaHCO3 solution is required to mix with 10 mL of blood? Given: K(H2CO3)=7.8×10−7; 107.4=2.511×107
Answer» To maintain the $p H$ of $7.4$ for blood at normal condition which is $2 M$ in $H_{2} C O_{3}$ (at equilibrium), what volume of $7.8 M N a H C O_{3}$ solution is required to mix with $10 mL$ of blood? $Given : K (H_{2} C O_{3}) = 7.8 \times 10^{- 7}; 10^{7.4} = 2.511 \times 10^{7}$

Discussion

15.	A: An ideal crystal has more entropy than a real crystal. R: An ideal crystal has more disorder.
Answer» A: An ideal crystal has more entropy than a real crystal. R: An ideal crystal has more disorder.

Discussion

16.	Which equation represents an example of Friedel-Craft's alkylation reaction?
Answer» Which equation represents an example of Friedel-Craft's alkylation reaction?

Discussion

17.	In which of the following reactions, new carbon-carbon bond is not formed?
Answer» In which of the following reactions, new carbon-carbon bond is not formed?

Discussion

18.

Column I Column IIACH3−CHBr−CD3/on treatement with alc.KOH gives CH2=CH−CD3 as a major productPE1 reactionBPh−CHBr−CH3 reacts faster than Ph−CHBr−CD3QE2 reactionCPh−CH2−CH2−F on treatement with C2H5OD/C2H5O−gives Ph−CD=CH2 as the major productRE1cB reactionDPh−CH2−CH2−Br and Ph−CD2−CH2−Brreact with same rateSFirst order reaction

Answer»

	Column I		Column II
A	$C H_{3} - C H B r - C D_{3}$ /on treatement with alc.KOH gives $C H_{2} = C H - C D_{3}$ as a major product	P	E1 reaction
B	$P h - C H B r - C H_{3}$ reacts faster than $P h - C H B r - C D_{3}$	Q	E2 reaction
C	$P h - C H_{2} - C H_{2} - F$ on treatement with $C_{2} H_{5} O D / C_{2} H_{5} O^{-}$ gives $P h - C D = C H_{2}$ as the major product	R	E1cB reaction
D	$P h - C H_{2} - C H_{2} - B r$ and $P h - C D_{2} - C H_{2} - B r$ react with same rate	S	First order reaction

Discussion

19.	discuss the condition for a process to be sponteneous in terms of entropy and Gibbs' functio
Answer» discuss the condition for a process to be sponteneous in terms of entropy and Gibbs' functio

Discussion

20.	Which of the following order of acidic strength is correct ?
Answer» Which of the following order of acidic strength is correct ?

Discussion

21.	How to find the vapour density of a compound
Answer» How to find the vapour density of a compound

Discussion

22.	For phenylalanine amino acid if at pH = 1.83, concentration of zwitter ion and its conjugate acid are same i.e. While at pH 5.48, concentration of conjugate base and conjugate acid of zwitter ion are same i.e. At what pH, concentration of zwitter ion and its conjugate base will be same? i.e
Answer» For phenylalanine amino acid if at pH = 1.83, concentration of zwitter ion and its conjugate acid are same i.e. While at pH 5.48, concentration of conjugate base and conjugate acid of zwitter ion are same i.e. At what pH, concentration of zwitter ion and its conjugate base will be same? i.e

Discussion

23.	In hysteresis, how B=meu knot(H+I)
Answer» In hysteresis, how B=meu knot(H+I)

Discussion

24.	B+H2O→A+C. A & C are as follows.
Answer» $B + H_{2} O \to A + C . A & C$ are as follows.

Discussion

25.	Which of the following industry uses the process of seeding?
Answer» Which of the following industry uses the process of seeding?

Discussion

26.	If the shortest wavelength of the spectral line of H - atom in Lyman series is x, then the longest wavelength of the line in Balmer series of Li2+ is
Answer» If the shortest wavelength of the spectral line of H - atom in Lyman series is x, then the longest wavelength of the line in Balmer series of $L i^{2 +}$ is

Discussion

27.	An atom crystallizes in a fcc lattice having a radius of √2 ∘A. What is the volume (in cm3) of one unit cell?
Answer» An atom crystallizes in a fcc lattice having a radius of $\sqrt{2} \circ A$ . What is the volume (in $c m^{3}$ ) of one unit cell?

Discussion

28.	14.During indirect redox reaction why there is a release of zinc ions from zinc rod and not of copper ion from copper rod. Why the copper ions from copper sulphate solution reduce to copper and not copper to copper ions?
Answer» 14.During indirect redox reaction why there is a release of zinc ions from zinc rod and not of copper ion from copper rod. Why the copper ions from copper sulphate solution reduce to copper and not copper to copper ions?

Discussion

29.	58 Identify Z in the following reaction CH3COOH (in presence of PCl5) gives rise to (A) (A in presence of LiAlH4) gives rise to (B) (B in presence of alcoholic KOH) gives rise to (Z)
Answer» 58 Identify Z in the following reaction CH3COOH (in presence of PCl5) gives rise to (A) (A in presence of LiAlH4) gives rise to (B) (B in presence of alcoholic KOH) gives rise to (Z)

Discussion

30.	One ship is sailing south with a velocity of 15 2km/hr and another South-East at the rate of 15 km/hr The relative velocity of second ship with respectto the first ship is
Answer» One ship is sailing south with a velocity of 15 2 km/hr and another South-East at the rate of 15 km/ hr The relative velocity of second ship with respect to the first ship is

Discussion

31.	Calculatethe mass percentage of aspirin (C9H8O4)in acetonitrile (CH3CN)when 6.5 g of C9H8O4is dissolved in 450 g of CH3CN.
Answer» Calculate the mass percentage of aspirin (C₉H₈O₄) in acetonitrile (CH₃CN) when 6.5 g of C₉H₈O₄ is dissolved in 450 g of CH₃CN.

Discussion

32.	The element having greatest difference between its first and second ionization energies, is:
Answer» The element having greatest difference between its first and second ionization energies, is:

Discussion

33.	1)carbon has,3 isotopes of atomic mass unit 12. 0 u and 13. 0 u and 14 u the relative abundance of these three isotopes are 98. 8 9 and 1. 10 and 2x10-10 respectively find out the average atomic mass of carbon?
Answer» 1)carbon has,3 isotopes of atomic mass unit 12. 0 u and 13. 0 u and 14 u the relative abundance of these three isotopes are 98. 8 9 and 1. 10 and 2x10-10 respectively find out the average atomic mass of carbon?

Discussion

34.	What is the dipole moment of BeH2?
Answer» What is the dipole moment of BeH2?

Discussion

35.	The solid NaCI is a bad conductor ofelectricity since[AIIMS 1980]
Answer» The solid NaCI is a bad conductor of electricity since [AIIMS 1980]

35.

The solid NaCI is a bad conductor ofelectricity since[AIIMS 1980]

Answer»

The solid NaCI is a bad conductor of
electricity since

[AIIMS 1980]

Discussion

36.	Which one of the following structures represents the neoprene polymer ?
Answer» Which one of the following structures represents the neoprene polymer ?

Discussion

37.	what is isosatere?
Answer» what is isosatere?

Discussion

38.	How are receptor proteins located in the cell membrane?
Answer» How are receptor proteins located in the cell membrane?

Discussion

39.	A vessel contains 28 gram N2 and 32 gram O2 at temperature t is 1800k and the pressure is 2atm. Find the pressure of N2 if associate 30% and O2 dissociation 50% If temperature remains constant
Answer» A vessel contains 28 gram N2 and 32 gram O2 at temperature t is 1800k and the pressure is 2atm. Find the pressure of N2 if associate 30% and O2 dissociation 50% If temperature remains constant

Discussion

40.	Solution of glucose (having molar mass 180 g/mol) is isotonic with 12 g of urea (having molar mass 60 g/mol) at a constant temperature. Both solutions are one litre each. Then the concentration of glucose is:
Answer» Solution of glucose (having molar mass 180 g/mol) is isotonic with $12 g$ of urea (having molar mass 60 g/mol) at a constant temperature. Both solutions are one litre each. Then the concentration of glucose is:

Discussion

41.	The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:
Answer» The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

41.

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

Answer»

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

Discussion

42.	P2O7 total electrons
Answer» P2O7 total electrons

Discussion

43.	The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0 g per cm cube. The ratio of the molecular weights of the solute and solvent is
Answer» The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0 g per cm cube. The ratio of the molecular weights of the solute and solvent is

Discussion

44.	(i) calculate the number of electrons which will together weigh one gram
Answer» (i) calculate the number of electrons which will together weigh one gram

Discussion

45.	For Completely reducing 20 ml of 0.5M MnO4- to Mn+2(aq) The charge required is
Answer» For Completely reducing 20 ml of 0.5M MnO₄^- to Mn⁺²(aq) The charge required is

Discussion

46.	For carbocation CH3+ which of the following is not true(1) it has trigonal planar shape (2) its shape is derived by overlap of each of the three sp2 hybridised orbitals of carbon with corresponding 1s orbital of hydrogen atoms (3) it has one vacant orbital on carbon which is perpendicular to molecular plane(4) it has two vacant p orbital on carbon which are in molecular plane
Answer» For carbocation CH3+ which of the following is not true (1) it has trigonal planar shape (2) its shape is derived by overlap of each of the three sp2 hybridised orbitals of carbon with corresponding 1s orbital of hydrogen atoms (3) it has one vacant orbital on carbon which is perpendicular to molecular plane (4) it has two vacant p orbital on carbon which are in molecular plane

Discussion

47.	what is number of significant figures in 2.005
Answer» what is number of significant figures in 2.005

Discussion

48.	2. Find out the reactivity order with LiAlH4
Answer» 2. Find out the reactivity order with LiAlH4

Discussion

49.	isopropylamine reacts with potassium permanganate and gives X ,this X reacts with hydronium ion and gives Y.Write common names of X and
Answer» isopropylamine reacts with potassium permanganate and gives X ,this X reacts with hydronium ion and gives Y.Write common names of X and

Discussion

50.

In a reaction of aniline a coloured product C was obtained.

Answer»

In a reaction of aniline a coloured product C was obtained.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

the hybridisation of S in orthorombic sulphar is sp3.How?

how many hydrogen are present in ethynyl group

Benzene+CH3CH2CH2ClAlCl3−−−−−→(anhyd.)X(major)Br2/hν−−−−→Y(major) Y is:

Give thenumber of electrons in the species,H2 and

Écrivez ce message en français correct. Bjr Sophie! ajourd'8 je suis OQP a 2m1 bizz

The species having bond order different from that of CO is

A metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with NH4OH and ‘B’ gives white. With KI ‘B’ gives a red precipitate soluble in excess of KI. ‘A’ and ‘B’ are respectively :

49. Conversion of 16.6J to kJ/mole.

Which one is the most basic in aqueous solution?

CaC2H2O−−→ACu2Cl2−−−−−→NH4OHB. Incorrect statement is

What is electronegativity and polarity? What is the difference between them. Also how are they related to each other? And what are the effects of electron releasing and electronic withdrawing groups on both of them and why?

If V is the observed molar volume of real gas and \(V_{id}\) is the molar volume of an ideal gas then Z is___.

To maintain the pH of 7.4 for blood at normal condition which is 2 M in H2CO3 (at equilibrium), what volume of 7.8 M NaHCO3 solution is required to mix with 10 mL of blood? Given: K(H2CO3)=7.8×10−7; 107.4=2.511×107

A: An ideal crystal has more entropy than a real crystal. R: An ideal crystal has more disorder.

Which equation represents an example of Friedel-Craft's alkylation reaction?

In which of the following reactions, new carbon-carbon bond is not formed?

discuss the condition for a process to be sponteneous in terms of entropy and Gibbs' functio

Which of the following order of acidic strength is correct ?

How to find the vapour density of a compound

For phenylalanine amino acid if at pH = 1.83, concentration of zwitter ion and its conjugate acid are same i.e. While at pH 5.48, concentration of conjugate base and conjugate acid of zwitter ion are same i.e. At what pH, concentration of zwitter ion and its conjugate base will be same? i.e

In hysteresis, how B=meu knot(H+I)

B+H2O→A+C. A &amp; C are as follows.

Which of the following industry uses the process of seeding?

If the shortest wavelength of the spectral line of H - atom in Lyman series is x, then the longest wavelength of the line in Balmer series of Li2+ is

An atom crystallizes in a fcc lattice having a radius of √2 ∘A. What is the volume (in cm3) of one unit cell?

14.During indirect redox reaction why there is a release of zinc ions from zinc rod and not of copper ion from copper rod. Why the copper ions from copper sulphate solution reduce to copper and not copper to copper ions?

58 Identify Z in the following reaction CH3COOH (in presence of PCl5) gives rise to (A) (A in presence of LiAlH4) gives rise to (B) (B in presence of alcoholic KOH) gives rise to (Z)

One ship is sailing south with a velocity of 15 2km/hr and another South-East at the rate of 15 km/hr The relative velocity of second ship with respectto the first ship is

Calculatethe mass percentage of aspirin (C9H8O4)in acetonitrile (CH3CN)when 6.5 g of C9H8O4is dissolved in 450 g of CH3CN.

The element having greatest difference between its first and second ionization energies, is:

1)carbon has,3 isotopes of atomic mass unit 12. 0 u and 13. 0 u and 14 u the relative abundance of these three isotopes are 98. 8 9 and 1. 10 and 2x10-10 respectively find out the average atomic mass of carbon?

What is the dipole moment of BeH2?

The solid NaCI is a bad conductor ofelectricity since[AIIMS 1980]

Which one of the following structures represents the neoprene polymer ?

what is isosatere?

How are receptor proteins located in the cell membrane?

A vessel contains 28 gram N2 and 32 gram O2 at temperature t is 1800k and the pressure is 2atm. Find the pressure of N2 if associate 30% and O2 dissociation 50% If temperature remains constant

Solution of glucose (having molar mass 180 g/mol) is isotonic with 12 g of urea (having molar mass 60 g/mol) at a constant temperature. Both solutions are one litre each. Then the concentration of glucose is:

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

P2O7 total electrons

The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0 g per cm cube. The ratio of the molecular weights of the solute and solvent is

(i) calculate the number of electrons which will together weigh one gram

For Completely reducing 20 ml of 0.5M MnO4- to Mn+2(aq) The charge required is

what is number of significant figures in 2.005

2. Find out the reactivity order with LiAlH4

isopropylamine reacts with potassium permanganate and gives X ,this X reacts with hydronium ion and gives Y.Write common names of X and

In a reaction of aniline a coloured product C was obtained.

B+H2O→A+C. A & C are as follows.