46295 + Interview Questions in Chemistry Page 57 InterviewSolution

2801.	The correct order of the enol content of x, y and z is:
Answer» The correct order of the enol content of $x$ , $y$ and $z$ is:

Discussion

2802.	Consider the following sequence of the reaction:C4H6O4(A)Δ→C3H6O2(B)Sodalime−−−−−→C2H6, then A & B respectively are
Answer» Consider the following sequence of the reaction: $C_{4} H_{6} O_{4} (A) Δ \to C_{3} H_{6} O_{2} (B) S o d a l i m e - ---- \to C_{2} H_{6}$ , then A & B respectively are

Discussion

2803.	Cumene is:
Answer» Cumene is:

Discussion

2804.	Product 'C' of the reaction is:
Answer» Product 'C' of the reaction is:

Discussion

2805.	The first line of Balmer series has wavelength 6563 ˙A. What will be the wavelength of the first line of Lyman series?
Answer» The first line of Balmer series has wavelength $6563 ˙ A$ . What will be the wavelength of the first line of Lyman series?

Discussion

2806.	Determine the molecular mass of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 respectively.
Answer» Determine the molecular mass of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 respectively.

Discussion

2807.	Among the following if number of linear molecules are x and number of angular molecules are y, then value of x×y would be? O3, N2O, NO2, SO2, CO2, SnCl2,Cl2O, HCN, +NO2
Answer» Among the following if number of linear molecules are $x$ and number of angular molecules are $y$ , then value of $x \times y$ would be? $O_{3}, N_{2} O, N O_{2}, S O_{2}, C O_{2}, S n C l_{2}, C l_{2} O, H C N, + N O_{2}$

Discussion

2808.	27.At 25^° C, the dissociation constant of a base, BOH, is 10 raise to -12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be a)10 raised to -6 b)10 raised to -5 c)10 raised to -7
Answer» 27.At 25^° C, the dissociation constant of a base, BOH, is 10 raise to -12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be a)10 raised to -6 b)10 raised to -5 c)10 raised to -7

Discussion

2809.	100 ml solution (I) of buffer containing 0.1(M) HA and 0.2 (M) A−, is mixed with another solution (II) of 100 ml containing 0.2(M) HA and 0.3(M) A−. After mixing what is the pH of resulting solution ? Given pKa of HA = 5
Answer» 100 ml solution (I) of buffer containing 0.1(M) HA and 0.2 (M) $A^{-}$ , is mixed with another solution (II) of 100 ml containing 0.2(M) HA and 0.3(M) $A^{-}$ . After mixing what is the pH of resulting solution ? Given $p K_{a}$ of HA = 5

Discussion

2810.	why enthalpy of formation of fluorides becomes less negative as we go down the group in alkali meta
Answer» why enthalpy of formation of fluorides becomes less negative as we go down the group in alkali meta

Discussion

2811.	Identify compound Y in the following sequence of reactions.
Answer» Identify compound Y in the following sequence of reactions.

Discussion

2812.	why basic strength of aniline is more than 2-methyl aniline ?
Answer» why basic strength of aniline is more than 2-methyl aniline ?

Discussion

2813.	One kg of air, initially at a temperature of 1270C, expands reversibly at a constant pressure until the volume is doubled. If the gas constant of air is 287 J/kg. K, the magnitude of work transfer is kJ (round off to 2 decimal places).114.8
Answer» One kg of air, initially at a temperature of $127^{0} C$ , expands reversibly at a constant pressure until the volume is doubled. If the gas constant of air is 287 J/kg. K, the magnitude of work transfer is kJ (round off to 2 decimal places). 114.8

Discussion

2814.	in E1 reactions AgNO3 act as weak base or solvent?explain why and why not for both the cases
Answer» in E1 reactions AgNO3 act as weak base or solvent?explain why and why not for both the cases

Discussion

2815.	For the given reaction product P is :
Answer» For the given reaction product P is :

Discussion

2816.	what is the proper and basic defination of thermodynamics
Answer» what is the proper and basic defination of thermodynamics

Discussion

2817.	2. How many number of nutron present in 1.7 g of ammonia
Answer» 2. How many number of nutron present in 1.7 g of ammonia

Discussion

2818.	a vessel contain non linear triatomic gas if 50%of gas dissociate into individual atom thenfind the new value of degree of freedom by ignoring vibrational mode
Answer» a vessel contain non linear triatomic gas if 50%of gas dissociate into individual atom thenfind the new value of degree of freedom by ignoring vibrational mode

Discussion

2819.	heat of combustion of benzoic acid at consant volume at 25^° c is -3233kj/mole .when 0.5 gr of bezioc q acid is burnt in bomb calorimeter the temperature of calorimeter increased by0.53^° c .Now in the same bomb calorimeter 1g of c 2h6 2 bu rnt then temperature increaseed by 2.04^° c △ H for combustion of C2H6 is 1) -1530kj/mole 2) -1536.2 kj/ . mole. molew y
Answer» heat of combustion of benzoic acid at consant volume at 25^° c is -3233kj/mole .when 0.5 gr of bezioc q acid is burnt in bomb calorimeter the temperature of calorimeter increased by0.53^° c .Now in the same bomb calorimeter 1g of c 2h6 2 bu rnt then temperature increaseed by 2.04^° c △ H for combustion of C2H6 is 1) -1530kj/mole 2) -1536.2 kj/ . mole. molew y

Discussion

2820.	Draw Fischer projections for the following substitution reactions and choose the correct option:
Answer» Draw Fischer projections for the following substitution reactions and choose the correct option:

Discussion

2821.	Which of the following types of metals make the most efficient catalysts [DPMT 1985]
Answer» Which of the following types of metals make the most efficient catalysts [DPMT 1985]

Discussion

2822.	Mixture of phenol and water will show positive deviation from raoult's law negative deviation from raoult's law?
Answer» Mixture of phenol and water will show positive deviation from raoult's law negative deviation from raoult's law?

Discussion

2823.	what is meant by releasing of corona from ELECTROSTATIC PRECIPITATOR
Answer» what is meant by releasing of corona from ELECTROSTATIC PRECIPITATOR

Discussion

2824.	Diborane undergo unsymmetrical cleavage reactions with:
Answer» Diborane undergo unsymmetrical cleavage reactions with:

Discussion

2825.	Alkali metals have low density, their density increases down the group. Give reason
Answer» Alkali metals have low density, their density increases down the group. Give reason

Discussion

2826.	In which process, the fuel on heating decomposes into simpler components?
Answer» In which process, the fuel on heating decomposes into simpler components?

Discussion

2827.	Difference and relation B/w crystal field splitting energy and crystal field stabilization energy
Answer» Difference and relation B/w crystal field splitting energy and crystal field stabilization energy

Discussion

2828.	8.96 L of Cl2 gas which is at STP is mixed with 100 mL of 5 M Ca(OH)2 which reacts as follows:2Ca(OH)2+2Cl2→Ca(OCl)2+CaCl2+2H2OFind the number of chlorine atoms present in Ca(OCl)2 that is formed.
Answer» 8.96 L of $C l_{2}$ gas which is at STP is mixed with 100 mL of 5 M $C a (O H)_{2}$ which reacts as follows: $2 C a (O H)_{2} + 2 C l_{2} \to C a (O C l)_{2} + C a C l_{2} + 2 H_{2} O$ Find the number of chlorine atoms present in $C a (O C l)_{2}$ that is formed.

Discussion

2829.	Choose the correct unit of equilibrium constant (Kc) for the given reaction. C(s)+12O2(g)→CO(g)
Answer» Choose the correct unit of equilibrium constant $(K_{c})$ for the given reaction. $C (s) + \frac{1}{2} O_{2} (g) \to C O (g)$

Discussion

2830.	Calculate the work done when 1mole of zinc dissolves in HCl at 273 K in 1) An open beaker 2) A closed container at 300 K
Answer» Calculate the work done when 1mole of zinc dissolves in HCl at 273 K in 1) An open beaker 2) A closed container at 300 K

Discussion

2831.	Combustion of 0.42g of an organic compond gave 0.924g of CO2 and 0.243g of H2O.Due to distillation of 0.208g of the compomds with NaOH ammonia evolved required 30ml of N/20 H2SO4 for complete neutralization.Calculate the percentage composition of componud
Answer» Combustion of 0.42g of an organic compond gave 0.924g of CO2 and 0.243g of H2O.Due to distillation of 0.208g of the compomds with NaOH ammonia evolved required 30ml of N/20 H2SO4 for complete neutralization.Calculate the percentage composition of componud

Discussion

2832.	What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.
Answer» What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.

Discussion

2833.	Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type [Pd(C6H5)2(SCN)2] and [Pd(C6H5)2(NCS)2] are (a) linkage isomers (b) coordination isomers (c) ionisation isomers (d) geometrical isomers
Answer» Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type $[P d (C_{6} H_{5})_{2} (S C N)_{2}]$ and $[P d (C_{6} H_{5})_{2} (N C S)_{2}]$ are (a) linkage isomers (b) coordination isomers (c) ionisation isomers (d) geometrical isomers

Discussion

2834.	Decomposition of H2O2 is catalysed by (1) H3PO4(2) Acetamilide(3) HF(4) MnO2
Answer» Decomposition of H2O2 is catalysed by (1) H3PO4 (2) Acetamilide (3) HF (4) MnO2

Discussion

2835.	which has more acidic strength B(OH)3 or In(OH)3
Answer» which has more acidic strength B(OH)3 or In(OH)3

Discussion

2836.	Which of the following oxide is expected to react readily with NaOH?
Answer» Which of the following oxide is expected to react readily with $N a O H$ ?

Discussion

2837.	Which of the following can form a Döbereiner's triad with lithium (atomic mass = 6.9 u) and sodium (atomic mass = 23 u)?
Answer» Which of the following can form a Döbereiner's triad with lithium (atomic mass = 6.9 u) and sodium (atomic mass = 23 u)?

Discussion

2838.	Which among the following reactions, the forward reaction will be favoured at low pressure?
Answer» Which among the following reactions, the forward reaction will be favoured at low pressure?

Discussion

2839.	the ratio of most probable speed of ch4 gas molecules to h2 gas molecules at 47 degree celsius is
Answer» the ratio of most probable speed of ch4 gas molecules to h2 gas molecules at 47 degree celsius is

Discussion

2840.	The halide with the highest melting point among KCl,KI,KF,KBr is:
Answer» The halide with the highest melting point among $K C l, K I, K F, K B r$ is:

Discussion

2841.	41. An organic compound A having molecular formula C3H3N on catalytic reduction gave another compound B the compound B on treatment with HNO2 gave propyl alcohol . B on warming with alcoholic caustic potash gave offensive smelling substance C .identify A B C
Answer» 41. An organic compound A having molecular formula C3H3N on catalytic reduction gave another compound B the compound B on treatment with HNO2 gave propyl alcohol . B on warming with alcoholic caustic potash gave offensive smelling substance C .identify A B C

Discussion

2842.	An alloy of copper,silver and gold is found have constituting the ccp lattice.If silver atom occupy the edge centers and gold is present at body center,then the alloy has a formula? (a) CuAg3Au (b) Cu4Ag4Au (c) Cu4Ag3Au (d) CuAgA
Answer» An alloy of copper,silver and gold is found have constituting the ccp lattice.If silver atom occupy the edge centers and gold is present at body center,then the alloy has a formula? (a) CuAg3Au (b) Cu4Ag4Au (c) Cu4Ag3Au (d) CuAgA

Discussion

2843.	The active masses of pure solid or liquid phasesare not included in the expression of equilibrium constant as: a)solid and liquid concentrations are independent of their quantities b)solids and liquids react very slowly c)solids and liquids at equilibrium do not interact with gaseous phase d)the molecules of solids and liquids do not migrate to the gaseous phase
Answer» The active masses of pure solid or liquid phasesare not included in the expression of equilibrium constant as: a)solid and liquid concentrations are independent of their quantities b)solids and liquids react very slowly c)solids and liquids at equilibrium do not interact with gaseous phase d)the molecules of solids and liquids do not migrate to the gaseous phase

2843.

The active masses of pure solid or liquid phasesare not included in the expression of equilibrium constant as: a)solid and liquid concentrations are independent of their quantities b)solids and liquids react very slowly c)solids and liquids at equilibrium do not interact with gaseous phase d)the molecules of solids and liquids do not migrate to the gaseous phase

Answer»

The active masses of pure solid or liquid phasesare not included in the expression of equilibrium constant as:
a)solid and liquid concentrations are independent of their quantities
b)solids and liquids react very slowly
c)solids and liquids at equilibrium do not interact with gaseous phase

d)the molecules of solids and liquids do not migrate to the gaseous phase

Discussion

2844.	Is phenyl a electron donating group?
Answer» Is phenyl a electron donating group?

Discussion

2845.	SO2 acts as an oxidant when reacts with 1. Acidified Kr2Cr2O7 2. Acidified KMnO4 3. H2S4. All
Answer» SO2 acts as an oxidant when reacts with 1. Acidified Kr2Cr2O7 2. Acidified KMnO4 3. H2S 4. All

Discussion

2846.	Why zero factorial is 1
Answer» Why zero factorial is 1

Discussion

2847.	What is trandponder what is itd significance.
Answer» What is trandponder what is itd significance.

Discussion

2848.	The formula of cyclic silicate in which 6 tetrahedra are arranged cyclically is:
Answer» The formula of cyclic silicate in which 6 tetrahedra are arranged cyclically is:

Discussion

2849.	Benzoyl chloride is prepared from benzoic acid by:
Answer» Benzoyl chloride is prepared from benzoic acid by:

Discussion

2850.	Ketones (R1COR2); R1=R2=alkyl group, can be obtained in one step by
Answer» Ketones (R1COR2); R1=R2=alkyl group, can be obtained in one step by

Discussion

Explore topic-wise InterviewSolutions in .

The correct order of the enol content of x, y and z is:

Consider the following sequence of the reaction:C4H6O4(A)Δ→C3H6O2(B)Sodalime−−−−−→C2H6, then A &amp; B respectively are

Cumene is:

Product 'C' of the reaction is:

The first line of Balmer series has wavelength 6563 ˙A. What will be the wavelength of the first line of Lyman series?

Determine the molecular mass of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 respectively.

Among the following if number of linear molecules are x and number of angular molecules are y, then value of x×y would be? O3, N2O, NO2, SO2, CO2, SnCl2,Cl2O, HCN, +NO2

27.At 25^° C, the dissociation constant of a base, BOH, is 10 raise to -12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be a)10 raised to -6 b)10 raised to -5 c)10 raised to -7

100 ml solution (I) of buffer containing 0.1(M) HA and 0.2 (M) A−, is mixed with another solution (II) of 100 ml containing 0.2(M) HA and 0.3(M) A−. After mixing what is the pH of resulting solution ? Given pKa of HA = 5

why enthalpy of formation of fluorides becomes less negative as we go down the group in alkali meta

Identify compound Y in the following sequence of reactions.

why basic strength of aniline is more than 2-methyl aniline ?

One kg of air, initially at a temperature of 1270C, expands reversibly at a constant pressure until the volume is doubled. If the gas constant of air is 287 J/kg. K, the magnitude of work transfer is kJ (round off to 2 decimal places).114.8

in E1 reactions AgNO3 act as weak base or solvent?explain why and why not for both the cases

For the given reaction product P is :

what is the proper and basic defination of thermodynamics

2. How many number of nutron present in 1.7 g of ammonia

a vessel contain non linear triatomic gas if 50%of gas dissociate into individual atom thenfind the new value of degree of freedom by ignoring vibrational mode

Draw Fischer projections for the following substitution reactions and choose the correct option:

Which of the following types of metals make the most efficient catalysts [DPMT 1985]

Mixture of phenol and water will show positive deviation from raoult's law negative deviation from raoult's law?

what is meant by releasing of corona from ELECTROSTATIC PRECIPITATOR

Diborane undergo unsymmetrical cleavage reactions with:

Alkali metals have low density, their density increases down the group. Give reason

In which process, the fuel on heating decomposes into simpler components?

Difference and relation B/w crystal field splitting energy and crystal field stabilization energy

8.96 L of Cl2 gas which is at STP is mixed with 100 mL of 5 M Ca(OH)2 which reacts as follows:2Ca(OH)2+2Cl2→Ca(OCl)2+CaCl2+2H2OFind the number of chlorine atoms present in Ca(OCl)2 that is formed.

Choose the correct unit of equilibrium constant (Kc) for the given reaction. C(s)+12O2(g)→CO(g)

Calculate the work done when 1mole of zinc dissolves in HCl at 273 K in 1) An open beaker 2) A closed container at 300 K

Combustion of 0.42g of an organic compond gave 0.924g of CO2 and 0.243g of H2O.Due to distillation of 0.208g of the compomds with NaOH ammonia evolved required 30ml of N/20 H2SO4 for complete neutralization.Calculate the percentage composition of componud

What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.

Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type [Pd(C6H5)2(SCN)2] and [Pd(C6H5)2(NCS)2] are (a) linkage isomers (b) coordination isomers (c) ionisation isomers (d) geometrical isomers

Decomposition of H2O2 is catalysed by (1) H3PO4(2) Acetamilide(3) HF(4) MnO2

which has more acidic strength B(OH)3 or In(OH)3

Which of the following oxide is expected to react readily with NaOH?

Which of the following can form a Döbereiner's triad with lithium (atomic mass = 6.9 u) and sodium (atomic mass = 23 u)?

Which among the following reactions, the forward reaction will be favoured at low pressure?

the ratio of most probable speed of ch4 gas molecules to h2 gas molecules at 47 degree celsius is

The halide with the highest melting point among KCl,KI,KF,KBr is:

41. An organic compound A having molecular formula C3H3N on catalytic reduction gave another compound B the compound B on treatment with HNO2 gave propyl alcohol . B on warming with alcoholic caustic potash gave offensive smelling substance C .identify A B C

An alloy of copper,silver and gold is found have constituting the ccp lattice.If silver atom occupy the edge centers and gold is present at body center,then the alloy has a formula? (a) CuAg3Au (b) Cu4Ag4Au (c) Cu4Ag3Au (d) CuAgA

Is phenyl a electron donating group?

SO2 acts as an oxidant when reacts with 1. Acidified Kr2Cr2O7 2. Acidified KMnO4 3. H2S4. All

Why zero factorial is 1

What is trandponder what is itd significance.

The formula of cyclic silicate in which 6 tetrahedra are arranged cyclically is:

Benzoyl chloride is prepared from benzoic acid by:

Ketones (R1COR2); R1=R2=alkyl group, can be obtained in one step by

Consider the following sequence of the reaction:C4H6O4(A)Δ→C3H6O2(B)Sodalime−−−−−→C2H6, then A & B respectively are