10223 + Interview Questions in Chemistry Page 23 InterviewSolution

1101.	What is the reaction between 1-Butyne and hot alkaline KMnO_4?
Answer» What is the reaction between 1-Butyne and hot alkaline KMnO_4?

Discussion

1102.	the no. of H+ ions in 2ml solution if pH =13
Answer» the no. of H+ ions in 2ml solution if pH =13

Discussion

1103.	Which is generally true about ionic compounds ?
Answer» Which is generally true about ionic compounds ?

Discussion

1104.	The graph which depicts the result of Rutherford's gold foil experiment with α-particle isθ: Scattering angleY: Number of scattered α- particles detected(Plots are schematic and not to scale)
Answer» The graph which depicts the result of Rutherford's gold foil experiment with $α -$ particle is $θ$ : Scattering angle $Y$ : Number of scattered $α -$ particles detected (Plots are schematic and not to scale)

1104.

The graph which depicts the result of Rutherford's gold foil experiment with α-particle isθ: Scattering angleY: Number of scattered α- particles detected(Plots are schematic and not to scale)

Answer»

The graph which depicts the result of Rutherford's gold foil experiment with $α -$ particle is

$θ$ : Scattering angle

$Y$ : Number of scattered $α -$ particles detected

(Plots are schematic and not to scale)

Discussion

1105.	Metals and non - metals exist in which form?
Answer» Metals and non - metals exist in which form?

Discussion

1106.	If you are provided with two colourless liquid that is Benzene and water how will you be able to distinguish between them
Answer» If you are provided with two colourless liquid that is Benzene and water how will you be able to distinguish between them

Discussion

1107.	Hydrogen sulphide can form A one series of salt B two series of salt C three series of salt D four series of salt
Answer» Hydrogen sulphide can form A one series of salt B two series of salt C three series of salt D four series of salt

Discussion

1108.	Why is law of constant proportions not applicable to isotopes ?
Answer» Why is law of constant proportions not applicable to isotopes ?

Discussion

1109.	The appearance of water droplets on the surface of a vessel is due to:
Answer» The appearance of water droplets on the surface of a vessel is due to:

1109.

The appearance of water droplets on the surface of a vessel is due to:

Answer»

The appearance of water droplets on the surface of a vessel is due to:

Discussion

1110.	For the dissociation reaction N2O2-> 2NO the degree of dissociation in terms of and total equilibrium pressure P is
Answer» For the dissociation reaction N2O2-> 2NO the degree of dissociation in terms of and total equilibrium pressure P is

Discussion

1111.	If pH of a solution is 13 then what will be the nature of that solution, is it slightly basic or strongly basic?
Answer» If pH of a solution is 13 then what will be the nature of that solution, is it slightly basic or strongly basic?

Discussion

1112.	Write short notes on:(a) Rutherford’s scattering experiment.(b) Isotopes.
Answer» Write short notes on: (a) Rutherford’s scattering experiment. (b) Isotopes.

1112.

Write short notes on:(a) Rutherford’s scattering experiment.(b) Isotopes.

Answer»

Write short notes on:

(a) Rutherford’s scattering experiment.

(b) Isotopes.

Discussion

1113.	The general formula for alkynes is:
Answer» The general formula for alkynes is:

Discussion

1114.	At cons†an t volume pressure and temperature are related as
Answer» At cons†an t volume pressure and temperature are related as

Discussion

1115.	What happens when you pour some acetone on your palm?
Answer» What happens when you pour some acetone on your palm?

Discussion

1116.	Colloidal solutions are heterogeneous solution.what is meaning of heterogeneous.True solutions are homogeneous.what is meaning of homogeneous
Answer» Colloidal solutions are heterogeneous solution.what is meaning of heterogeneous. True solutions are homogeneous.what is meaning of homogeneous

Discussion

1117.	Mention the Mass number, Atomic number and valency of carbon.
Answer» Mention the Mass number, Atomic number and valency of carbon.

Discussion

1118.	The atomic number of an element X is 16. (a) Write down the electronic configuration of X. (b) What will he the valency of X ?
Answer» The atomic number of an element X is 16. (a) Write down the electronic configuration of X. (b) What will he the valency of X ?

1118.

The atomic number of an element X is 16. (a) Write down the electronic configuration of X. (b) What will he the valency of X ?

Answer»

The atomic number of an element X is 16.

(a) Write down the electronic configuration of X.

(b) What will he the valency of X ?

Discussion

1119.	Assume that the de-Broglie wave associated with an electron can form a standing wave between the atoms arranged in a one dimensional array with nodes at each of the atomic sites. It is found that one such standing wave is formed if the distance d between the atoms of the array is 2 ˚A. A similar standing wave is again formed if d is increased to 2.5 ˚A but not for any intermediate value of d. Find the least value of d for which the standing wave of the type described above can form.
Answer» Assume that the de-Broglie wave associated with an electron can form a standing wave between the atoms arranged in a one dimensional array with nodes at each of the atomic sites. It is found that one such standing wave is formed if the distance $d$ between the atoms of the array is $2 ˚ A$ . A similar standing wave is again formed if $d$ is increased to $2.5 ˚ A$ but not for any intermediate value of $d$ . Find the least value of $d$ for which the standing wave of the type described above can form.

Discussion

1120.	what does it mean wehem we say alkalineo or acidic potassium permanganatd
Answer» what does it mean wehem we say alkalineo or acidic potassium permanganatd

Discussion

1121.	At room temperature, the forces of attraction between the particles of solid substances are ___ than those which exist in the gaseous state.
Answer» At room temperature, the forces of attraction between the particles of solid substances are ___ than those which exist in the gaseous state.

Discussion

1122.	Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams It must contain many qstions and You can also suggest me if there is theory and lot of questions Remember that I have completed all the ncert book and exemplar
Answer» Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams It must contain many qstions and You can also suggest me if there is theory and lot of questions Remember that I have completed all the ncert book and exemplar

1122.

Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams It must contain many qstions and You can also suggest me if there is theory and lot of questions Remember that I have completed all the ncert book and exemplar

Answer»

Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams

It must contain many qstions and

You can also suggest me if there is theory and lot of questions

Remember that I have completed all the ncert book and exemplar

Discussion

1123.	Equivalent weight of crystalline oxalic acid is
Answer» Equivalent weight of crystalline oxalic acid is

Discussion

1124.	If 0.2 mol of the following substances are required how many grams of those substances should be taken?Sodium chloride, magnesium oxide, calcium carbonate
Answer» If 0.2 mol of the following substances are required how many grams of those substances should be taken? Sodium chloride, magnesium oxide, calcium carbonate

Discussion

1125.	1 cc of water is taken from the surface to the bottom of a lake having depth 100 m. If Bulk modulus of water is 2.2*10^9 N/m^2 then decrease in the volume of the water will be
Answer» 1 cc of water is taken from the surface to the bottom of a lake having depth 100 m. If Bulk modulus of water is 2.2*10^9 N/m^2 then decrease in the volume of the water will be

Discussion

1126.	Why did Ratherford choose a gold foil and Alfa particles for his experiment
Answer» Why did Ratherford choose a gold foil and Alfa particles for his experiment

Discussion

1127.	Define (a) solute, and (b) solvent
Answer» Define (a) solute, and (b) solvent

Discussion

1128.	Describe Bohr’s model of an atom.
Answer» Describe Bohr’s model of an atom.

Discussion

1129.	Water evaporates only when it is heated to 100°C. Do you agree? Give reasons.
Answer» Water evaporates only when it is heated to 100°C. Do you agree? Give reasons.

Discussion

1130.	A metallic surface can handle a maximum pressure of 10000 N/m2. What is the maximum surface charge density the metal surface can have.(Take, ϵo=8.85×10−12 and √17.7=4.21)
Answer» A metallic surface can handle a maximum pressure of $10000 {N/m}^{2}$ . What is the maximum surface charge density the metal surface can have. $($ Take, $ϵ_{o} = 8.85 \times 10^{- 12}$ and $\sqrt{17.7} = 4.21)$

Discussion

1131.	Name a non-metal : (a) which is lustrous (b) which is required for combustion (c) whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope. (d) other than carbon which shows allotropy (e) which is known to form the largest number of compounds
Answer» Name a non-metal : (a) which is lustrous (b) which is required for combustion (c) whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope. (d) other than carbon which shows allotropy (e) which is known to form the largest number of compounds

1131.

Name a non-metal : (a) which is lustrous (b) which is required for combustion (c) whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope. (d) other than carbon which shows allotropy (e) which is known to form the largest number of compounds

Answer»

Name a non-metal :

(a) which is lustrous

(b) which is required for combustion

(c) whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope.

(d) other than carbon which shows allotropy

(e) which is known to form the largest number of compounds

Discussion

1132.	At temperature T K , PCl5 is 50% dissociated at an equilibrium pressure of 4 atm . At what pressure it would dissociate to the extent of 80% at the same temperature?
Answer» At temperature T K , PCl5 is 50% dissociated at an equilibrium pressure of 4 atm . At what pressure it would dissociate to the extent of 80% at the same temperature?

Discussion

1133.	A drop of olive oil of radius 0.25 mm spreads into a circular film of radius 5 cm on the water surface estimate the molecular size of the olive oil
Answer» A drop of olive oil of radius 0.25 mm spreads into a circular film of radius 5 cm on the water surface estimate the molecular size of the olive oil

Discussion

1134.	Which is the element with atomic number 57
Answer» Which is the element with atomic number 57

Discussion

1135.	Why is dulong and petit law valid for only solid elements? Is it just because of their common solid state, or because they have some other common property?
Answer» Why is dulong and petit law valid for only solid elements? Is it just because of their common solid state, or because they have some other common property?

Discussion

1136.	Excess of HCl is reacted with 6.5 g of zinc. The hydrogen liberated is burnt with oxygen. The mass of water formed is (Atomic mass of Zn = 65)
Answer» Excess of $H C l$ is reacted with $6.5 g$ of zinc. The hydrogen liberated is burnt with oxygen. The mass of water formed is (Atomic mass of $Z n$ = 65)

Discussion

1137.	33.NH3 and BF3 form an adduct readily because they form A) a coordinate bond B) a hydrogen bond C) an ionic bond D) a covalent bond
Answer» 33.NH3 and BF3 form an adduct readily because they form A) a coordinate bond B) a hydrogen bond C) an ionic bond D) a covalent bond

Discussion

1138.	In Rutherford experiment no.of particles scattered at 90degree are x per second. No.of particles scattered per second at angke 60 dergree are
Answer» In Rutherford experiment no.of particles scattered at 90degree are x per second. No.of particles scattered per second at angke 60 dergree are

Discussion

1139.	Question 39A gold sample contains 90% of gold and the rest copper. How many atoms of gold are present in one gram of this sample of gold?
Answer» Question 39 A gold sample contains $90 %$ of gold and the rest copper. How many atoms of gold are present in one gram of this sample of gold?

Discussion

1140.	Of the two allotropes – white and red phosphorus, __ Phosphorus does not react with alkali solution.
Answer» Of the two allotropes – white and red phosphorus, __ Phosphorus does not react with alkali solution.

Discussion

1141.	Two reactions A and B of the same order have equal pre-exponential factors but activation energy for A is greater than that of B by 24.9 kJ/mol. Calculate the ratio(kBkA) at 27∘C.Here, kA and kB are rate constants for reactions A and B, respectively.(R=8.31 JK−1mol−1)
Answer» Two reactions $A$ and $B$ of the same order have equal pre-exponential factors but activation energy for $A$ is greater than that of $B$ by $24.9 k J / m o l$ . Calculate the ratio( $\frac{k_{B}}{k_{A}}$ ) at $27^{\circ} C .$ Here, $k_{A}$ and $k_{B}$ are rate constants for reactions $A$ and $B$ , respectively. $(R = 8.31 J K^{- 1} m o l^{- 1})$

Discussion

1142.	What will be the action of the following substances on litmus paper ? Dry HCl gas Moistened NH3 gas Lemon juice Carbonated soft drink Curd Soap solution
Answer» What will be the action of the following substances on litmus paper ? Dry HCl gas Moistened ${NH}_{3}$ gas Lemon juice Carbonated soft drink Curd Soap solution

Discussion

1143.

Four students took separately the mixture of sand, common salt and ammonium chloride in beakers, added water, stirred the mixture well and then filtered. They reported their observations as shown below. Student As residue In the filtrate I Ammonium chloride Sand Common salt II Common salt, Sand Ammonium chloride III Sand, Ammonium chloride Common Salt IV Sand Ammonium chloride, Common salt Who reported the observations in the correct order of the components as residue and in the filtrate ?(1) I(2) IV(3) III(4) II

Answer» Four students took separately the mixture of sand, common salt and ammonium chloride in beakers, added water, stirred the mixture well and then filtered. They reported their observations as shown below.

Student	As residue	In the filtrate
I	Ammonium chloride	Sand Common salt
II	Common salt, Sand	Ammonium chloride
III	Sand, Ammonium chloride	Common Salt
IV	Sand	Ammonium chloride, Common salt

Who reported the observations in the correct order of the components as residue and in the filtrate ?

(1) I

(2) IV

(3) III

(4) II

Discussion

1144.	Solubility of gas in water is 0.001 m STP determine its Henry law constant at STP
Answer» Solubility of gas in water is 0.001 m STP determine its Henry law constant at STP

Discussion

1145.	Atoms can achieve octet by:
Answer» Atoms can achieve octet by:

Discussion

1146.	The complex having strongest metal to carbon bond is Options:Ni(CO)4 \lbrack Co(CO)4\rbrack–\lbrack Fe(CO)4\rbrack2–\lbrack Fe(CO)6\rbrack2+
Answer» The complex having strongest metal to carbon bond is Options:Ni(CO)4 \lbrack Co(CO)4\rbrack–\lbrack Fe(CO)4\rbrack2–\lbrack Fe(CO)6\rbrack2+

Discussion

1147.	The atomic numbers of Al, Na and Be respectively are:
Answer» The atomic numbers of Al, Na and Be respectively are:

Discussion

1148.	write on molecular basis the origin of latent heat of fusion?
Answer» write on molecular basis the origin of latent heat of fusion?

Discussion

1149.	How elements are further classified?
Answer» How elements are further classified?

Discussion

1150.	Define the atomic mass unit.
Answer» Define the atomic mass unit.

Discussion

Explore topic-wise InterviewSolutions in .

What is the reaction between 1-Butyne and hot alkaline KMnO_4?

the no. of H+ ions in 2ml solution if pH =13

Which is generally true about ionic compounds ?

The graph which depicts the result of Rutherford's gold foil experiment with α-particle isθ: Scattering angleY: Number of scattered α- particles detected(Plots are schematic and not to scale)

Metals and non - metals exist in which form?

If you are provided with two colourless liquid that is Benzene and water how will you be able to distinguish between them

Hydrogen sulphide can form A one series of salt B two series of salt C three series of salt D four series of salt

Why is law of constant proportions not applicable to isotopes ?

The appearance of water droplets on the surface of a vessel is due to:

For the dissociation reaction N2O2-> 2NO the degree of dissociation in terms of and total equilibrium pressure P is

If pH of a solution is 13 then what will be the nature of that solution, is it slightly basic or strongly basic?

Write short notes on:(a) Rutherford’s scattering experiment.(b) Isotopes.

The general formula for alkynes is:

At cons†an t volume pressure and temperature are related as

What happens when you pour some acetone on your palm?

Colloidal solutions are heterogeneous solution.what is meaning of heterogeneous.True solutions are homogeneous.what is meaning of homogeneous

Mention the Mass number, Atomic number and valency of carbon.

The atomic number of an element X is 16. (a) Write down the electronic configuration of X. (b) What will he the valency of X ?

what does it mean wehem we say alkalineo or acidic potassium permanganatd

At room temperature, the forces of attraction between the particles of solid substances are ___ than those which exist in the gaseous state.

Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams It must contain many qstions and You can also suggest me if there is theory and lot of questions Remember that I have completed all the ncert book and exemplar

Equivalent weight of crystalline oxalic acid is

If 0.2 mol of the following substances are required how many grams of those substances should be taken?Sodium chloride, magnesium oxide, calcium carbonate

1 cc of water is taken from the surface to the bottom of a lake having depth 100 m. If Bulk modulus of water is 2.2*10^9 N/m^2 then decrease in the volume of the water will be

Why did Ratherford choose a gold foil and Alfa particles for his experiment

Define (a) solute, and (b) solvent

Describe Bohr’s model of an atom.

Water evaporates only when it is heated to 100°C. Do you agree? Give reasons.

A metallic surface can handle a maximum pressure of 10000 N/m2. What is the maximum surface charge density the metal surface can have.(Take, ϵo=8.85×10−12 and √17.7=4.21)

Name a non-metal : (a) which is lustrous (b) which is required for combustion (c) whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope. (d) other than carbon which shows allotropy (e) which is known to form the largest number of compounds

At temperature T K , PCl5 is 50% dissociated at an equilibrium pressure of 4 atm . At what pressure it would dissociate to the extent of 80% at the same temperature?

A drop of olive oil of radius 0.25 mm spreads into a circular film of radius 5 cm on the water surface estimate the molecular size of the olive oil

Which is the element with atomic number 57

Why is dulong and petit law valid for only solid elements? Is it just because of their common solid state, or because they have some other common property?

Excess of HCl is reacted with 6.5 g of zinc. The hydrogen liberated is burnt with oxygen. The mass of water formed is (Atomic mass of Zn = 65)

33.NH3 and BF3 form an adduct readily because they form A) a coordinate bond B) a hydrogen bond C) an ionic bond D) a covalent bond

In Rutherford experiment no.of particles scattered at 90degree are x per second. No.of particles scattered per second at angke 60 dergree are

Question 39A gold sample contains 90% of gold and the rest copper. How many atoms of gold are present in one gram of this sample of gold?

Of the two allotropes – white and red phosphorus, __ Phosphorus does not react with alkali solution.

Two reactions A and B of the same order have equal pre-exponential factors but activation energy for A is greater than that of B by 24.9 kJ/mol. Calculate the ratio(kBkA) at 27∘C.Here, kA and kB are rate constants for reactions A and B, respectively.(R=8.31 JK−1mol−1)

What will be the action of the following substances on litmus paper ? Dry HCl gas Moistened NH3 gas Lemon juice Carbonated soft drink Curd Soap solution

Solubility of gas in water is 0.001 m STP determine its Henry law constant at STP

Atoms can achieve octet by:

The complex having strongest metal to carbon bond is Options:Ni(CO)4 \lbrack Co(CO)4\rbrack–\lbrack Fe(CO)4\rbrack2–\lbrack Fe(CO)6\rbrack2+

The atomic numbers of Al, Na and Be respectively are:

write on molecular basis the origin of latent heat of fusion?

How elements are further classified?

Define the atomic mass unit.