46295 + Interview Questions in Chemistry Page 16 InterviewSolution

751.	Which one of the following is employed as a tranquilizer?
Answer» Which one of the following is employed as a tranquilizer?

Discussion

752.	A solution of A [molecular mass=20] and B [molecular mass=10],[mole fraction=0.6] having density 0.7 gm/ml .then find molarity and molality of B in this solution.
Answer» A solution of A [molecular mass=20] and B [molecular mass=10],[mole fraction=0.6] having density 0.7 gm/ml .then find molarity and molality of B in this solution.

Discussion

753.	Which one is strongest acid
Answer» Which one is strongest acid

Discussion

754.	The number of sigma and pi bonds in 1-butene-3-yne are
Answer» The number of sigma and pi bonds in 1-butene-3-yne are

754.

The number of sigma and pi bonds in 1-butene-3-yne are

Answer»

The number of sigma and pi bonds in 1-butene-3-yne are

Discussion

755.	If an element (atomic weight =50) crystallizes in FCC lattice, with a=0.50 nm, the density (in g/cm3) of unit cell if it contains 0.25% Schottkey defects is: (use NA=6×1023)
Answer» If an element (atomic weight $= 50$ ) crystallizes in FCC lattice, with $a = 0.50 nm$ , the density $({in g/cm}^{3})$ of unit cell if it contains $0.25 %$ Schottkey defects is: (use $N_{A} = 6 \times 10^{23}$ )

Discussion

756.	Which one is the most acidic compound?
Answer» Which one is the most acidic compound?

Discussion

757.	The molality of a solution is defined as the number of moles of solute present in
Answer» The molality of a solution is defined as the number of moles of solute present in

Discussion

758.	A solid solution is made up of two solids "A" and "B". Mass percentage of "A" is 40% by mass in a solid solution. Find the molar mass of "B" if the mole fraction of "A" (xA) is 0.20 and molar mass of "A" is 200 g/mol.
Answer» A solid solution is made up of two solids "A" and "B". Mass percentage of "A" is $40 %$ by mass in a solid solution. Find the molar mass of "B" if the mole fraction of "A" $(x_{A}) is 0.20$ and molar mass of "A" is $200 g/mol$ .

Discussion

759.	Why phenol react with PCL5 to give chlorobenzene as phenols do not undergo the cleavage of C-OH Bond
Answer» Why phenol react with PCL5 to give chlorobenzene as phenols do not undergo the cleavage of C-OH Bond

Discussion

760.	On the basis of hyperconjugation and inductive effect, which of isobutyl carbocation and n-butyl carbocation is more stable and why?
Answer» On the basis of hyperconjugation and inductive effect, which of isobutyl carbocation and n-butyl carbocation is more stable and why?

Discussion

761.	Predict the product of the following reaction and choose the correct options.
Answer» Predict the product of the following reaction and choose the correct options.

Discussion

762.	38. What is the Reaction equation of methyl magnesium bromide reacting with oxygen.
Answer» 38. What is the Reaction equation of methyl magnesium bromide reacting with oxygen.

Discussion

763.	The potential energy of a article varies with distance x from a fixed origin asAVXU=x2 +B Where A and B are dimensional constants then dimensional formula for AB is(1) \lbrack ML72T-2\rbrack(2) \lbrack ML112T-213) \lbrack M2L 9/2T-21(4) \lbrack ML13/2T-3
Answer» The potential energy of a article varies with distance x from a fixed origin asAVXU=x2 +B Where A and B are dimensional constants then dimensional formula for AB is(1) \lbrack ML72T-2\rbrack(2) \lbrack ML112T-213) \lbrack M2L 9/2T-21(4) \lbrack ML13/2T-3

Discussion

764.	Wettable property and non wettable property
Answer» Wettable property and non wettable property

Discussion

765.	The product B in above reaction is :
Answer» The product B in above reaction is :

Discussion

766.	Can anyone please tell me how to calculate the hybridization?
Answer» Can anyone please tell me how to calculate the hybridization?

Discussion

767.	Williamsons synthesis is an example of :
Answer» Williamsons synthesis is an example of :

Discussion

768.	A metal crystallizes in fcc structure with a unit cell side of 500 pm. If the density of the crystal is 1.33 g/cc, the molar mass(in g/mol) of the metal is: (Give your answer to the nearest integer value)
Answer» A metal crystallizes in fcc structure with a unit cell side of $500 pm$ . If the density of the crystal is $1.33 g/cc$ , the molar mass(in g/mol) of the metal is: (Give your answer to the nearest integer value)

Discussion

769.	Significant figures'meaning in short?
Answer» Significant figures'meaning in short?

Discussion

770.	10.B.D.E. of N2+ and C2+ are equal. Explain
Answer» 10.B.D.E. of N2+ and C2+ are equal. Explain

Discussion

771.	For the reaction 2NO+Br2→2NOBrthe following mechanism has been given:NO+Br2⇌NOBr2NOBr2+NO→2NOBr (slow)Hence, the rate law is :
Answer» For the reaction $2 NO + {Br}_{2} \to 2 NOBr$ the following mechanism has been given: $NO + {Br}_{2} ⇌ {NOBr}_{2}$ ${NOBr}_{2} + NO \to 2 NOBr (slow)$ Hence, the rate law is :

Discussion

772.	What is the order of Band gap in the following materials?
Answer» What is the order of Band gap in the following materials?

Discussion

773.	18. 20%of N2O4 molecules are dissociated into NO2 in a sample of gas at 300k and 760 Torr. Calculate the density of the equilibrium mixture 1)ABO2 2)A2BO2 3)A2B3O4 4)AB2O2
Answer» 18. 20%of N2O4 molecules are dissociated into NO2 in a sample of gas at 300k and 760 Torr. Calculate the density of the equilibrium mixture 1)ABO2 2)A2BO2 3)A2B3O4 4)AB2O2

Discussion

774.	The correct order of C-O bond order among COСоО,is(1) CO< CO2< CO2co2, CO, is(2Y co,2
Answer» The correct order of C-O bond order among COСоО,is(1) CO< CO2< CO2co2, CO, is(2Y co,2

Discussion

775.	(CH3)2C=OZn−Hg−−−−−→conc.HClX Here X is :
Answer» $(C H_{3})_{2} C = O Z n - H g - ---- \to c o n c . H C l X$ Here X is :

Discussion

776.	What is Bohr atomic model?
Answer» What is Bohr atomic model?

Discussion

777.	Two cars A and B have velocity vectors (in x-y planegiven as 40i 40 m s and 20i 20- 3 msrespectively. The angle their velocity vectors makewith each other :s
Answer» Two cars A and B have velocity vectors (in x-y planegiven as 40i 40 m s and 20i 20- 3 msrespectively. The angle their velocity vectors makewith each other :s

Discussion

778.	6.Calculate number of electrons present in 9.5gm of po43-?? 1. 6 2. 5NA 3. 0.1NA 4. 4.7NA
Answer» 6.Calculate number of electrons present in 9.5gm of po43-?? 1. 6 2. 5NA 3. 0.1NA 4. 4.7NA

Discussion

779.	The maximum number of isomers ethers with the molecular formula C4H10O is
Answer» The maximum number of isomers ethers with the molecular formula C $_{4}$ H $_{10}$ O is

Discussion

780.	Kinetic energy of an electron in the second bohr \vert5orbit of a hydrogen atom is (a, is bohr radius):-(1) 4mmag(3) 32T ma(4)216π-magh2(4) O4㎡ma264t2 ma
Answer» Kinetic energy of an electron in the second bohr \vert5orbit of a hydrogen atom is (a, is bohr radius):-(1) 4mmag(3) 32T ma(4)216π-magh2(4) O4㎡ma264t2 ma

Discussion

781.	The donor atoms in Ethylenediaminetetraacetic acid (EDTA) are:
Answer» The donor atoms in Ethylenediaminetetraacetic acid (EDTA) are:

Discussion

782.	Calculate (a) wavenumber and (b) frequency of yellow radiation having wavelength 5800 ˚A.
Answer» Calculate (a) wavenumber and (b) frequency of yellow radiation having wavelength 5800 $˚ A$ .

Discussion

783.	1. △ H of water is -285.8 kJ mol^{-1} . If enthalpy of neutrilization of monoacid base is -57.3 kj mol^{-1 },△ H_f
Answer» 1. △ H of water is -285.8 kJ mol^{-1} . If enthalpy of neutrilization of monoacid base is -57.3 kj mol^{-1 },△ H_f

Discussion

784.	6. Which is the better nuclephile? Ch3- f- Nh2- oh-
Answer» 6. Which is the better nuclephile? Ch3- f- Nh2- oh-

Discussion

785.	76. For an electron in He, the product of number of 79revolution per second and the time taken for onerevolution in the third orbit isPt
Answer» 76. For an electron in He, the product of number of 79revolution per second and the time taken for onerevolution in the third orbit isPt

Discussion

786.	The compressibility factor for a van der Waal’s gas at the critical point is:
Answer» The compressibility factor for a van der Waal’s gas at the critical point is:

Discussion

787.	The vapour pressure of a solvent decreased by 10mm of mercury when a non-volatile solute was added to the solvent the mole fraction of the solute in the solution is 0.2 what should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20mm of mercury
Answer» The vapour pressure of a solvent decreased by 10mm of mercury when a non-volatile solute was added to the solvent the mole fraction of the solute in the solution is 0.2 what should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20mm of mercury

Discussion

788.	4 g of hydrogen reacts with 20 gram of oxygen to form water .The mass of water formed is ? 1)24g. 2)36g. 3) 22.5 g. 4)40 g
Answer» 4 g of hydrogen reacts with 20 gram of oxygen to form water .The mass of water formed is ? 1)24g. 2)36g. 3) 22.5 g. 4)40 g

Discussion

789.	The coordination number and oxidation number of X in the following compound is : [X(SO4)(NH3)5]Cl
Answer» The coordination number and oxidation number of X in the following compound is : $[X (S O_{4}) (N H_{3})_{5}] C l$

Discussion

790.	difference btw dynamic and kinemetic viscosity
Answer» difference btw dynamic and kinemetic viscosity

Discussion

791.	Gun-cotton is
Answer» Gun-cotton is

Discussion

792.	Which is more acidic CH3COOH or Br3COOH
Answer» Which is more acidic CH3COOH or Br3COOH

Discussion

793.	Balance the following chemical equation:Cr2O2−7(aq)+SO2−3(aq)→Cr3+(aq)+SO2−4(aq) (Acidic medium)
Answer» Balance the following chemical equation: $C r_{2} O_{7}^{2 -} (a q) + S O_{3}^{2 -} (a q) \to C r^{3 +} (a q) + S O_{4}^{2 -} (a q)$ (Acidic medium)

Discussion

794.	Out of the following, which one has least value of melting point?
Answer» Out of the following, which one has least value of melting point?

Discussion

795.	In the reaction Ag2O+H2O2→2Ag+H2O+O2. H2O2 acts as :
Answer» In the reaction $A g_{2} O + H_{2} O_{2} \to 2 A g + H_{2} O + O_{2} . H_{2} O_{2}$ acts as :

Discussion

796.	66. The order of stability of metal oxides in the increasing order Al2O3,MgO,Fe2O3,Cr2O3
Answer» 66. The order of stability of metal oxides in the increasing order Al2O3,MgO,Fe2O3,Cr2O3

Discussion

797.	What is the amount of heat to be supplied to prepare 128 g of CaC2 by using CaCO3 and followed by reaction with carbon. Reactions are: CaCO3(s)→CaO (s)+CO2 (g); △Ho=42 .8 kcal CaO (s)+3C (s)→CaC2+CO (g); △Ho=111 kcal
Answer» What is the amount of heat to be supplied to prepare 128 g of $C a C_{2}$ by using $C a C O_{3}$ and followed by reaction with carbon. Reactions are: $C a C O_{3} (s) \to C a O (s) + C O_{2} (g); △ H^{o} = 42 .8 k c a l$ $C a O (s) + 3 C (s) \to C a C_{2} + C O (g); △ H^{o} = 111 k c a l$

Discussion

798.	The Van der Waals radii of O,N,Cl,F and Ne increases in the order?
Answer» The Van der Waals radii of $O, N, C l, F$ and $N e$ increases in the order?

Discussion

799.	For 2A(g) ----->B(g)+3C(g),pressure of A at t=0 is 500mm, then total pressure of A, B&C at t=10min is?
Answer» For 2A(g) ----->B(g)+3C(g),pressure of A at t=0 is 500mm, then total pressure of A, B&C at t=10min is?

Discussion

800.	What will be the correct balanced redox reaction for the given equation? (Use oxidation number method)Tl2O3(s)+NH2OH(aq)→TlOH(s)+N2(g)
Answer» What will be the correct balanced redox reaction for the given equation? (Use oxidation number method) $T l_{2} O_{3} (s) + N H_{2} O H (a q) \to T l O H (s) + N_{2} (g)$

Discussion

Explore topic-wise InterviewSolutions in .

Which one of the following is employed as a tranquilizer?

A solution of A [molecular mass=20] and B [molecular mass=10],[mole fraction=0.6] having density 0.7 gm/ml .then find molarity and molality of B in this solution.

Which one is strongest acid

The number of sigma and pi bonds in 1-butene-3-yne are

If an element (atomic weight =50) crystallizes in FCC lattice, with a=0.50 nm, the density (in g/cm3) of unit cell if it contains 0.25% Schottkey defects is: (use NA=6×1023)

Which one is the most acidic compound?

The molality of a solution is defined as the number of moles of solute present in

A solid solution is made up of two solids "A" and "B". Mass percentage of "A" is 40% by mass in a solid solution. Find the molar mass of "B" if the mole fraction of "A" (xA) is 0.20 and molar mass of "A" is 200 g/mol.

Why phenol react with PCL5 to give chlorobenzene as phenols do not undergo the cleavage of C-OH Bond

On the basis of hyperconjugation and inductive effect, which of isobutyl carbocation and n-butyl carbocation is more stable and why?

Predict the product of the following reaction and choose the correct options.

38. What is the Reaction equation of methyl magnesium bromide reacting with oxygen.

The potential energy of a article varies with distance x from a fixed origin asAVXU=x2 +B Where A and B are dimensional constants then dimensional formula for AB is(1) \lbrack ML72T-2\rbrack(2) \lbrack ML112T-213) \lbrack M2L 9/2T-21(4) \lbrack ML13/2T-3

Wettable property and non wettable property

The product B in above reaction is :

Can anyone please tell me how to calculate the hybridization?

Williamsons synthesis is an example of :

A metal crystallizes in fcc structure with a unit cell side of 500 pm. If the density of the crystal is 1.33 g/cc, the molar mass(in g/mol) of the metal is: (Give your answer to the nearest integer value)

Significant figures'meaning in short?

10.B.D.E. of N2+ and C2+ are equal. Explain

For the reaction 2NO+Br2→2NOBrthe following mechanism has been given:NO+Br2⇌NOBr2NOBr2+NO→2NOBr (slow)Hence, the rate law is :

What is the order of Band gap in the following materials?

18. 20%of N2O4 molecules are dissociated into NO2 in a sample of gas at 300k and 760 Torr. Calculate the density of the equilibrium mixture 1)ABO2 2)A2BO2 3)A2B3O4 4)AB2O2

The correct order of C-O bond order among COСоО,is(1) CO< CO2< CO2co2, CO, is(2Y co,2

(CH3)2C=OZn−Hg−−−−−→conc.HClX Here X is :

What is Bohr atomic model?

Two cars A and B have velocity vectors (in x-y planegiven as 40i 40 m s and 20i 20- 3 msrespectively. The angle their velocity vectors makewith each other :s

6.Calculate number of electrons present in 9.5gm of po43-?? 1. 6 2. 5NA 3. 0.1NA 4. 4.7NA

The maximum number of isomers ethers with the molecular formula C4H10O is

Kinetic energy of an electron in the second bohr \vert5orbit of a hydrogen atom is (a, is bohr radius):-(1) 4mmag(3) 32T ma(4)216π-magh2(4) O4㎡ma264t2 ma

The donor atoms in Ethylenediaminetetraacetic acid (EDTA) are:

Calculate (a) wavenumber and (b) frequency of yellow radiation having wavelength 5800 ˚A.

1. △ H of water is -285.8 kJ mol^{-1} . If enthalpy of neutrilization of monoacid base is -57.3 kj mol^{-1 },△ H_f

6. Which is the better nuclephile? Ch3- f- Nh2- oh-

76. For an electron in He, the product of number of 79revolution per second and the time taken for onerevolution in the third orbit isPt

The compressibility factor for a van der Waal’s gas at the critical point is:

The vapour pressure of a solvent decreased by 10mm of mercury when a non-volatile solute was added to the solvent the mole fraction of the solute in the solution is 0.2 what should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20mm of mercury

4 g of hydrogen reacts with 20 gram of oxygen to form water .The mass of water formed is ? 1)24g. 2)36g. 3) 22.5 g. 4)40 g

The coordination number and oxidation number of X in the following compound is : [X(SO4)(NH3)5]Cl

difference btw dynamic and kinemetic viscosity

Gun-cotton is

Which is more acidic CH3COOH or Br3COOH

Balance the following chemical equation:Cr2O2−7(aq)+SO2−3(aq)→Cr3+(aq)+SO2−4(aq) (Acidic medium)

Out of the following, which one has least value of melting point?

In the reaction Ag2O+H2O2→2Ag+H2O+O2. H2O2 acts as :

66. The order of stability of metal oxides in the increasing order Al2O3,MgO,Fe2O3,Cr2O3

What is the amount of heat to be supplied to prepare 128 g of CaC2 by using CaCO3 and followed by reaction with carbon. Reactions are: CaCO3(s)→CaO (s)+CO2 (g); △Ho=42 .8 kcal CaO (s)+3C (s)→CaC2+CO (g); △Ho=111 kcal

The Van der Waals radii of O,N,Cl,F and Ne increases in the order?

For 2A(g) ----->B(g)+3C(g),pressure of A at t=0 is 500mm, then total pressure of A, B&C at t=10min is?

What will be the correct balanced redox reaction for the given equation? (Use oxidation number method)Tl2O3(s)+NH2OH(aq)→TlOH(s)+N2(g)