2600 + Interview Questions in Chemistry Page 27 InterviewSolution

1301.	Which of the following sets of compounds correctly illustrates the law of reciprocal proportions?
Answer» Which of the following sets of compounds correctly illustrates the law of reciprocal proportions?

Discussion

1302.	Which of the following species has the negative electron gain enthalpy?
Answer» Which of the following species has the negative electron gain enthalpy?

Discussion

1303.	Ligands can be
Answer» Ligands can be

Discussion

1304.	A crystallises in BCC arrangement and ions B occupy 13rd of tetrahedral voids. What is the formula of the crystal?
Answer» A crystallises in BCC arrangement and ions B occupy ${\frac{1}{3}}^{r d}$ of tetrahedral voids. What is the formula of the crystal?

Discussion

1305.	If the temperature of 1 L of a gas is increased from 27∘C to 57∘C, find the final volume of the gas, assuming the pressure to be constant.
Answer» If the temperature of 1 L of a gas is increased from $27^{\circ} C$ to $57^{\circ} C$ , find the final volume of the gas, assuming the pressure to be constant.

Discussion

1306.	The carbon-hydrogen bond length is shortest in
Answer» The carbon-hydrogen bond length is shortest in

Discussion

1307.	Which alkene on reductive ozonolysis gives 1 mole each of propan-2-one, formaldehyde and 2,4-dioxohexanedial?
Answer» Which alkene on reductive ozonolysis gives 1 mole each of propan-2-one, formaldehyde and 2,4-dioxohexanedial?

Discussion

1308.	According to kinetic theory of gases:
Answer» According to kinetic theory of gases:

Discussion

1309.	Calculate the wavelength of the first line in the Balmer series of hydrogen spectrum.
Answer» Calculate the wavelength of the first line in the Balmer series of hydrogen spectrum.

Discussion

1310.	The reaction of benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel give
Answer» The reaction of benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel give

Discussion

1311.	Assertion: Polybutadiene is an example of chain growth polymerReason: Copolymerization of butadiene and styrene gives Buna - S
Answer» Assertion: Polybutadiene is an example of chain growth polymer Reason: Copolymerization of butadiene and styrene gives Buna - S

1311.

Assertion: Polybutadiene is an example of chain growth polymerReason: Copolymerization of butadiene and styrene gives Buna - S

Answer» Assertion: Polybutadiene is an example of chain growth polymer

Reason: Copolymerization of butadiene and styrene gives Buna - S

Discussion

1312.	A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?
Answer» A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?

Discussion

1313.	In the reaction shown, which is the major product ?
Answer» In the reaction shown, which is the major product ?

1313.

In the reaction shown, which is the major product ?

Answer»

In the reaction shown, which is the major product ?

Discussion

1314.	Which one of the following structure represent Isopentyl group?
Answer» Which one of the following structure represent Isopentyl group?

Discussion

1315.	The thermal stability order for group 14 halides is:
Answer» The thermal stability order for group 14 halides is:

Discussion

1316.	Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is
Answer» Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

1316.

Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

Answer»

Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

Discussion

1317.	The correct stability order of the given resonating structures is :
Answer» The correct stability order of the given resonating structures is :

Discussion

1318.	At what temperature is the rms speed of hydrogen molecules the same as that of oxygen molecules at 1327∘C ?
Answer» At what temperature is the rms speed of hydrogen molecules the same as that of oxygen molecules at $1327^{\circ} C$ ?

Discussion

1319.	For a given reaction: xA+yB→mC+nD△H=−30 kJ mol−1,△S=−100 JK−1mol−1At what temperature the reaction is at equilibrium?
Answer» For a given reaction: $x A + y B \to m C + n D$ $△ H = - 30 k J m o l^{- 1}, △ S = - 100 J K^{- 1} m o l^{- 1}$ At what temperature the reaction is at equilibrium?

Discussion

1320.	The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decrease in which of the following orders?
Answer» The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decrease in which of the following orders?

Discussion

1321.	25.4 g of I2 and 14.2 g of Cl2 are made to react completely to yield a mixture of ICl and ICl3. Calculate the number of moles of ICl and ICl3. (Given: Molar mass of I= 127 g/mol)
Answer» $25.4 g$ of $I_{2}$ and $14.2 g$ of $C l_{2}$ are made to react completely to yield a mixture of $I C l$ and $I C l_{3}$ . Calculate the number of moles of $I C l$ and $I C l_{3}$ . (Given: Molar mass of $I$ = $127$ $g / m o l$ )

Discussion

1322.	The correct order of reactivity of PhMgBr towards (I) Benzophenone (II) Acetaldehyde (III) Acetoneis:
Answer» The correct order of reactivity of $P h M g B r$ towards (I) Benzophenone (II) Acetaldehyde (III) Acetone is:

Discussion

1323.	A sample of clay contains 50% silica and 10% water. The sample is partially dried by which it loses 8 g water. If the percentage of silica in the partially dried clay is 52, calculate the percentage of water in the partially dried clay ?
Answer» A sample of clay contains $50 %$ silica and $10 %$ water. The sample is partially dried by which it loses $8 g$ water. If the percentage of silica in the partially dried clay is $52$ , calculate the percentage of water in the partially dried clay ?

Discussion

1324.	The total number of contributing structures showing hyperconjugation (involving C−H bond) for the following carbocation is ___
Answer» The total number of contributing structures showing hyperconjugation (involving $C - H$ bond) for the following carbocation is ___

1324.

The total number of contributing structures showing hyperconjugation (involving C−H bond) for the following carbocation is ___

Answer»

The total number of contributing structures showing hyperconjugation (involving $C - H$ bond) for the following carbocation is ___

Discussion

1325.	Which of the following is not a member of a homologous series?
Answer» Which of the following is not a member of a homologous series?

Discussion

1326.	An evacuated glass vessel weighs 50.0 g when empty 148.0 g when filled with a liquid of density 0.98 g mL−1 and 50.5 g when filled with an ideal gas at 760 mm Hg at 300 K, Determine the molar mass of the gas.
Answer» An evacuated glass vessel weighs $50.0 g$ when empty $148.0 g$ when filled with a liquid of density $0.98 g m L^{- 1}$ and $50.5 g$ when filled with an ideal gas at $760 m m H g$ at $300 K$ , Determine the molar mass of the gas.

Discussion

1327.	Which of the following isomerism is not shown by alkenes?
Answer» Which of the following isomerism is not shown by alkenes?

Discussion

1328.	Among the i) alkanes ii) akyl halide iii) ether iv) alcohol v) carboxylic acidhaving the same molecular weight, the one with highest boiling point and reason are
Answer» Among the i) alkanes ii) akyl halide iii) ether iv) alcohol v) carboxylic acid having the same molecular weight, the one with highest boiling point and reason are

Discussion

1329.	Conductivity (unit Siemen's) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is[AIEEE 2002]
Answer» Conductivity (unit Siemen's) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is [AIEEE 2002]

1329.

Conductivity (unit Siemen's) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is[AIEEE 2002]

Answer»

Conductivity (unit Siemen's) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is

[AIEEE 2002]

Discussion

1330.	Light of wavelength 12818∘A is emitted when the electron of a hydrogen atom drops from 5th to 3rd orbit. Find the wavelength of the photon emitted when the electron falls from 3rd to 2nd orbit.
Answer» Light of wavelength $12818 \circ A$ is emitted when the electron of a hydrogen atom drops from 5th to 3rd orbit. Find the wavelength of the photon emitted when the electron falls from 3rd to 2nd orbit.

Discussion

1331.	The following complexex are given:(1) trans−[Co(NH3)4Cl2]+(2) cis−[Co(NH3)2(en)2]3+(3) trans−[Co(NH3)2(en)2]3+(4) [NiCl4]2−(5) [TiF6]2−(6) [CoF6]3−Choose the correct code:
Answer» The following complexex are given: (1) $t r a n s - [C o (N H_{3})_{4} C l_{2}]^{+}$ (2) $c i s - [C o (N H_{3})_{2} (e n)_{2}]^{3 +}$ (3) $t r a n s - [C o (N H_{3})_{2} (e n)_{2}]^{3 +}$ (4) $[N i C l_{4}]^{2 -}$ (5) $[T i F_{6}]^{2 -}$ (6) $[C o F_{6}]^{3 -}$ Choose the correct code:

Discussion

1332.	One cationic complex has two isomers A and B. Each has one Co3+, five NH3, one Br−, and one SO2−4 stoi-chiometrically. A gives white ppt with BaCl2 whle B give yellow ppt with AgNO3.B can be:
Answer» One cationic complex has two isomers A and B. Each has one $C o^{3 +}$ , five $N H_{3}$ , one $B r^{-}$ , and one $S O_{4}^{2 -}$ stoi-chiometrically. A gives white ppt with $B a C l_{2}$ whle B give yellow ppt with $A g N O_{3}$ . B can be:

Discussion

1333.	Among the structures shown below, which one has the lowest potential energy?
Answer» Among the structures shown below, which one has the lowest potential energy?

Discussion

1334.	Which of the following will have lower PKb value
Answer» Which of the following will have lower P^Kb value

Discussion

1335.	What will be the radius of 64Cu nucleus if the radius of 27Al nucleus is RAl ?
Answer» What will be the radius of $^{64} C u$ nucleus if the radius of $^{27} A l$ nucleus is $R_{A l}$ ?

Discussion

1336.	Arrange the following compounds in decreasing order of reactivity with Br2 CH2=CH2 (I), CH ≡ CH (II), CH2=CHCl (III)
Answer» Arrange the following compounds in decreasing order of reactivity with $B r_{2}$ $C H_{2} = C H_{2} (I), C H \equiv C H (I I), C H_{2} = C H C l (I I I)$

Discussion

1337.	The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are
Answer» The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are

Discussion

1338.	The enthalpy of combustion of 2 moles of benzene at 27∘ C differs from the value determined by bomb calorimeter by
Answer» The enthalpy of combustion of 2 moles of benzene at $27^{\circ} C$ differs from the value determined by bomb calorimeter by

Discussion

1339.	One gram of commercial AgNO3 is dissolved in 50 mL of water. It is treated with 50 mL of a KI solution. The silver iodide thus precipitated in filtered off. Excess of KI in the filtrate is titrated with (M/10)KIO3 solution in presence of 6 M HCl till all I− ions are converted into ICI. It requires 50 ml. of (M/10)KIO3 solution. 20 mL of the same stock solution of KI requires 30 mL of (M/10)KIO3 under similar conditions. Calculate the percentage of AgNO3 in the sample. (Reaction: KIO3+2KI+6HCl→3ICl+3KCl+3H2O )
Answer» One gram of commercial $A g N O_{3}$ is dissolved in 50 mL of water. It is treated with 50 mL of a KI solution. The silver iodide thus precipitated in filtered off. Excess of KI in the filtrate is titrated with $(M / 10) K I O_{3}$ solution in presence of 6 M HCl till all $I^{-}$ ions are converted into ICI. It requires 50 ml. of $(M / 10) K I O_{3}$ solution. 20 mL of the same stock solution of KI requires 30 mL of $(M / 10) K I O_{3}$ under similar conditions. Calculate the percentage of $A g N O_{3}$ in the sample. (Reaction: $K I O_{3} + 2 K I + 6 H C l \to 3 I C l + 3 K C l + 3 H_{2} O$ )

Discussion

1340.	Consider the hydrogen atom to be a proton embedded in a cavity of radius a0 (Bohr’s radius) whose charge is neutralized by the addition of an electron to the cavity in vacuum, infinitely slowly. If the magnitude of the average kinetic energy is half the magnitude of the average energy, the average potential energy:
Answer» Consider the hydrogen atom to be a proton embedded in a cavity of radius $a_{0}$ (Bohr’s radius) whose charge is neutralized by the addition of an electron to the cavity in vacuum, infinitely slowly. If the magnitude of the average kinetic energy is half the magnitude of the average energy, the average potential energy:

Discussion

1341.	How many grams of oxygen is required to completely react with 0.2 g of hydrogen to yield water?
Answer» How many grams of oxygen is required to completely react with $0.2 g$ of hydrogen to yield water?

Discussion

1342.	The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000]
Answer» The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000]

Discussion

1343.	Which of the following species contain equal number of α and π− bonds?
Answer» Which of the following species contain equal number of $α$ and $π -$ bonds?

Discussion

1344.	Which of the following is the least feasible for Fischer esterification?
Answer» Which of the following is the least feasible for Fischer esterification?

Discussion

1345.	The frequency of yellow light having wavelength 600 nm is
Answer» The frequency of yellow light having wavelength 600 nm is

Discussion

1346.	Arrange the following in decreasing order of reactivity towards electrophilic aromatic substitution
Answer» Arrange the following in decreasing order of reactivity towards electrophilic aromatic substitution

Discussion

1347.	The correct order of stabilities of the following carbocations is:
Answer» The correct order of stabilities of the following carbocations is:

Discussion

1348.	Which of the following compound is isoelectronic with[H3N:BH3] ?
Answer» Which of the following compound is isoelectronic with $[H_{3} N : B H_{3}]$ ?

Discussion

1349.	The equilibrium constant for the reaction 2SO2 + O2 ⇋ 2 SO3 is 900 atm−1 at 800K. A mixture containing SO3 and O2 having initial pressures of 1atm and 2atm is heated to equilibrate. The partial pressure of O2at equilibrium will be
Answer» The equilibrium constant for the reaction $2 S O_{2} + O_{2} ⇋ 2 S O_{3} i s 900 a t m^{- 1} a t 800 K .$ A mixture containing $S O_{3} a n d O_{2}$ having initial pressures of $1 a t m a n d 2 a t m$ is heated to equilibrate. The partial pressure of $O_{2}$ at equilibrium will be

Discussion

1350.	Which of the following is/are true for Metamers?
Answer» Which of the following is/are true for Metamers?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following sets of compounds correctly illustrates the law of reciprocal proportions?

Which of the following species has the negative electron gain enthalpy?

Ligands can be

A crystallises in BCC arrangement and ions B occupy 13rd of tetrahedral voids. What is the formula of the crystal?

If the temperature of 1 L of a gas is increased from 27∘C to 57∘C, find the final volume of the gas, assuming the pressure to be constant.

The carbon-hydrogen bond length is shortest in

Which alkene on reductive ozonolysis gives 1 mole each of propan-2-one, formaldehyde and 2,4-dioxohexanedial?

According to kinetic theory of gases:

Calculate the wavelength of the first line in the Balmer series of hydrogen spectrum.

The reaction of benzyl chloride with sodium cyanide followed by reduction with hydrogen in the presence of nickel give

Assertion: Polybutadiene is an example of chain growth polymerReason: Copolymerization of butadiene and styrene gives Buna - S

A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?

In the reaction shown, which is the major product ?

Which one of the following structure represent Isopentyl group?

The thermal stability order for group 14 halides is:

Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

The correct stability order of the given resonating structures is :

At what temperature is the rms speed of hydrogen molecules the same as that of oxygen molecules at 1327∘C ?

For a given reaction: xA+yB→mC+nD△H=−30 kJ mol−1,△S=−100 JK−1mol−1At what temperature the reaction is at equilibrium?

The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decrease in which of the following orders?

25.4 g of I2 and 14.2 g of Cl2 are made to react completely to yield a mixture of ICl and ICl3. Calculate the number of moles of ICl and ICl3. (Given: Molar mass of I= 127 g/mol)

The correct order of reactivity of PhMgBr towards (I) Benzophenone (II) Acetaldehyde (III) Acetoneis:

A sample of clay contains 50% silica and 10% water. The sample is partially dried by which it loses 8 g water. If the percentage of silica in the partially dried clay is 52, calculate the percentage of water in the partially dried clay ?

The total number of contributing structures showing hyperconjugation (involving C−H bond) for the following carbocation is ___

Which of the following is not a member of a homologous series?

An evacuated glass vessel weighs 50.0 g when empty 148.0 g when filled with a liquid of density 0.98 g mL−1 and 50.5 g when filled with an ideal gas at 760 mm Hg at 300 K, Determine the molar mass of the gas.

Which of the following isomerism is not shown by alkenes?

Among the i) alkanes ii) akyl halide iii) ether iv) alcohol v) carboxylic acidhaving the same molecular weight, the one with highest boiling point and reason are

Conductivity (unit Siemen's) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is[AIEEE 2002]

Light of wavelength 12818∘A is emitted when the electron of a hydrogen atom drops from 5th to 3rd orbit. Find the wavelength of the photon emitted when the electron falls from 3rd to 2nd orbit.

The following complexex are given:(1) trans−[Co(NH3)4Cl2]+(2) cis−[Co(NH3)2(en)2]3+(3) trans−[Co(NH3)2(en)2]3+(4) [NiCl4]2−(5) [TiF6]2−(6) [CoF6]3−Choose the correct code:

One cationic complex has two isomers A and B. Each has one Co3+, five NH3, one Br−, and one SO2−4 stoi-chiometrically. A gives white ppt with BaCl2 whle B give yellow ppt with AgNO3.B can be:

Among the structures shown below, which one has the lowest potential energy?

Which of the following will have lower PKb value

What will be the radius of 64Cu nucleus if the radius of 27Al nucleus is RAl ?

Arrange the following compounds in decreasing order of reactivity with Br2 CH2=CH2 (I), CH ≡ CH (II), CH2=CHCl (III)

The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are

The enthalpy of combustion of 2 moles of benzene at 27∘ C differs from the value determined by bomb calorimeter by

How many grams of oxygen is required to completely react with 0.2 g of hydrogen to yield water?

The fermentation of starch to give alcohol occurs mainly with the help of [CPMT 1971; MH CET 1999; RPMT 2000]

Which of the following species contain equal number of α and π− bonds?

Which of the following is the least feasible for Fischer esterification?

The frequency of yellow light having wavelength 600 nm is

Arrange the following in decreasing order of reactivity towards electrophilic aromatic substitution

The correct order of stabilities of the following carbocations is:

Which of the following compound is isoelectronic with[H3N:BH3] ?

The equilibrium constant for the reaction 2SO2 + O2 ⇋ 2 SO3 is 900 atm−1 at 800K. A mixture containing SO3 and O2 having initial pressures of 1atm and 2atm is heated to equilibrate. The partial pressure of O2at equilibrium will be

Which of the following is/are true for Metamers?