10223 + Interview Questions in Chemistry Page 179 InterviewSolution

8901.	Which atom is the smallest atom of all?
Answer» Which atom is the smallest atom of all?

Discussion

8902.	Question 5 A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement? (a) Water, air, wind (b) Air, sugar, oil (c) Oxygen, water, sugar (d) Salt, juice, air
Answer» Question 5 A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement? (a) Water, air, wind (b) Air, sugar, oil (c) Oxygen, water, sugar (d) Salt, juice, air

Discussion

8903.	If you take honey on to your fingers, it gets stuck. Which of the following is the reason for this sticky nature of honey?
Answer» If you take honey on to your fingers, it gets stuck. Which of the following is the reason for this sticky nature of honey?

Discussion

8904.	Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?
Answer» Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?

Discussion

8905.	What state of matter is fire?
Answer» What state of matter is fire?

Discussion

8906.	The basic structural unit of silicates is:
Answer» The basic structural unit of silicates is:

Discussion

8907.	Which one is an acidic salt?
Answer» Which one is an acidic salt?

Discussion

8908.	___________ is a mixture and ____________ is a solution.
Answer» ___________ is a mixture and ____________ is a solution.

Discussion

8909.	Question 1 How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25∘C), which are miscible with each other?
Answer» Question 1 How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than $25^{\circ} C$ ), which are miscible with each other?

Discussion

8910.	(a) What are the two ways in which the physical states of matter can be changed ? (b) Draw the 'states of matter triangle' of show the interconversion of states of matter ? (c) How can the evaporation of a liquid be made faster ?
Answer» (a) What are the two ways in which the physical states of matter can be changed ? (b) Draw the 'states of matter triangle' of show the interconversion of states of matter ? (c) How can the evaporation of a liquid be made faster ?

8910.

(a) What are the two ways in which the physical states of matter can be changed ? (b) Draw the 'states of matter triangle' of show the interconversion of states of matter ? (c) How can the evaporation of a liquid be made faster ?

Answer»

(a) What are the two ways in which the physical states of matter can be changed ?

(b) Draw the 'states of matter triangle' of show the interconversion of states of matter ?

(c) How can the evaporation of a liquid be made faster ?

Discussion

8911.	How many electrons are present in one single bond formed between two atoms?
Answer» How many electrons are present in one single bond formed between two atoms?

Discussion

8912.	Hydrogen shows characteristics similar to elements of which of the following group/groups
Answer» Hydrogen shows characteristics similar to elements of which of the following group/groups

Discussion

8913.	Definition of acid and basic radicals.
Answer» Definition of acid and basic radicals.

Discussion

8914.	Identify the element which exhibits anomalous behaviour so that it can be placed in two different groups of the periodic table.
Answer» Identify the element which exhibits anomalous behaviour so that it can be placed in two different groups of the periodic table.

Discussion

8915.	Complete the given reaction. CO2 + →NaHCO3
Answer» Complete the given reaction. $C O_{2} +$ $\to N a H C O_{3}$

Discussion

8916.	How many electrons are present in 9g of water
Answer» How many electrons are present in 9g of water

Discussion

8917.	What is chromatography? what it used for??
Answer» What is chromatography? what it used for??

Discussion

8918.	Xenon is treated as noble gas but when you see its electronic configuration ,you will come to know that it's outermost shell have four electrons instead of eight electrons. This same happens with krypton also. I want to know why?
Answer» Xenon is treated as noble gas but when you see its electronic configuration ,you will come to know that it's outermost shell have four electrons instead of eight electrons. This same happens with krypton also. I want to know why?

Discussion

8919.	What is the percentage of water in human body
Answer» What is the percentage of water in human body

Discussion

8920.	The atomic number and the mass number of an element A are 14 and 28 respectively. The number of neutrons are:
Answer» The atomic number and the mass number of an element A are 14 and 28 respectively. The number of neutrons are:

Discussion

8921.	Question 9 (a) Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below: What will be the action of gas on: (i) dry litmus paper? (ii) moist litmus paper?
Answer» Question 9 (a) Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below: What will be the action of gas on: (i) dry litmus paper? (ii) moist litmus paper?

8921.

Question 9 (a) Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below: What will be the action of gas on: (i) dry litmus paper? (ii) moist litmus paper?

Answer»

Question 9 (a)

Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below:

What will be the action of gas on:

(i) dry litmus paper?

(ii) moist litmus paper?

Discussion

8922.	Electron affinity is the ___.
Answer» Electron affinity is the ___.

Discussion

8923.	Is it possible to change the temperature and pressure of a fixed mass of gas without changing its volume? Explain your answer.
Answer» Is it possible to change the temperature and pressure of a fixed mass of gas without changing its volume? Explain your answer.

Discussion

8924.	The bond that exists between NH3 and BF3 is called ___ .
Answer» The bond that exists between $N H_{3}$ and $B F_{3}$ is called ___ .

Discussion

8925.	Question 46 (a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden Symbols of these are given below. Complete the puzzle 1. CI 7. He 2. H 8. F 3. Ar 9. Kr 4. O 10. Rn 5. Xe 11. Ne 6. N (b) Identify the total number of inert gases, their names and symbols from this crossword puzzle
Answer» Question 46 (a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden Symbols of these are given below. Complete the puzzle 1. CI 7. He 2. H 8. F 3. Ar 9. Kr 4. O 10. Rn 5. Xe 11. Ne 6. N (b) Identify the total number of inert gases, their names and symbols from this crossword puzzle

8925.

Question 46 (a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden Symbols of these are given below. Complete the puzzle 1. CI 7. He 2. H 8. F 3. Ar 9. Kr 4. O 10. Rn 5. Xe 11. Ne 6. N (b) Identify the total number of inert gases, their names and symbols from this crossword puzzle

Answer»

Question 46
(a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden Symbols of these are given below. Complete the puzzle

1. CI 7. He

2. H 8. F

3. Ar 9. Kr

4. O 10. Rn

5. Xe 11. Ne

6. N

(b) Identify the total number of inert gases, their names and symbols from this crossword puzzle

Discussion

8926.	Which of the following is not a correct match? Polymer Monomer/s
Answer» Which of the following is not a correct match? Polymer Monomer/s

8926.

Which of the following is not a correct match? Polymer Monomer/s

Answer»

Which of the following is not a correct match?

Polymer Monomer/s

Discussion

8927.	Nitrogen has the electronic configuration 1s2,2s2 2p1x 2p1y 2p1z and not 1s2,2s2 2p2x 2p1y 2p0z which is determined by
Answer» Nitrogen has the electronic configuration $1 s^{2}, 2 s^{2} 2 p_{x}^{1} 2 p_{y}^{1} 2 p_{z}^{1}$ and not $1 s^{2}, 2 s^{2} 2 p_{x}^{2} 2 p_{y}^{1} 2 p_{z}^{0}$ which is determined by

8927.

Nitrogen has the electronic configuration 1s2,2s2 2p1x 2p1y 2p1z and not 1s2,2s2 2p2x 2p1y 2p0z which is determined by

Answer»

Nitrogen has the electronic configuration $1 s^{2}, 2 s^{2} 2 p_{x}^{1} 2 p_{y}^{1} 2 p_{z}^{1}$ and not $1 s^{2}, 2 s^{2} 2 p_{x}^{2} 2 p_{y}^{1} 2 p_{z}^{0}$ which is determined by

Discussion

8928.	Why can't the clothes dry fast when they are spreaded one over the other?
Answer» Why can't the clothes dry fast when they are spreaded one over the other?

Discussion

8929.	When ammonia gas reacts with hydrogen chloride, which state of matter is the product in?
Answer» When ammonia gas reacts with hydrogen chloride, which state of matter is the product in?

Discussion

8930.	Balance the following equation by short-cut method, and write the coefficient for O2C5H11NH2+O2→CO2+H2O+NO2___
Answer» Balance the following equation by short-cut method, and write the coefficient for $O_{2} C_{5} H_{11} N H_{2} + O_{2} \to C O_{2} + H_{2} O + N O_{2}$ ___

Discussion

8931.	Why blood does not come out when we burn our body
Answer» Why blood does not come out when we burn our body

Discussion

8932.	Which method is usually used to separate coloured substance from each other?
Answer» Which method is usually used to separate coloured substance from each other?

Discussion

8933.	What do we call those particles which have A. more electrons than the normal atoms B. Less electron than the normal atoms
Answer» What do we call those particles which have A. more electrons than the normal atoms B. Less electron than the normal atoms

8933.

What do we call those particles which have A. more electrons than the normal atoms B. Less electron than the normal atoms

Answer»

What do we call those particles which have

A. more electrons than the normal atoms

B. Less electron than the normal atoms

Discussion

8934.	Which among the following statements about hydrogen is correct?
Answer» Which among the following statements about hydrogen is correct?

Discussion

8935.	Is sponge a solid. If so, please explain
Answer» Is sponge a solid. If so, please explain

Discussion

8936.	What is Grahams law of diffusion?explain
Answer» What is Grahams law of diffusion?explain

Discussion

8937.	Oxygen exhibits +2 oxidation state in the compound:
Answer» Oxygen exhibits +2 oxidation state in the compound:

Discussion

8938.	If a child is eating bread, our body decomposes it into carbon dioxide and water. Which type of reaction is this?
Answer» If a child is eating bread, our body decomposes it into carbon dioxide and water. Which type of reaction is this?

Discussion

8939.	What is the value of 500 Mg in kilogram?
Answer» What is the value of 500 Mg in kilogram?

Discussion

8940.	The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of an element as its symbol was:
Answer» The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of an element as its symbol was:

Discussion

8941.	Zinc reacts with the concentrated solution of sodium hydroxide ___ gas is liberated.
Answer» Zinc reacts with the concentrated solution of sodium hydroxide ___ gas is liberated.

Discussion

8942.	The rate of oxidation of chloroform decreases in the presence of alcohol. Alcohol is a/an ___ for this reaction.
Answer» The rate of oxidation of chloroform decreases in the presence of alcohol. Alcohol is a/an ___ for this reaction.

Discussion

8943.	Why do our hands get shriwlled up when we are in water for a long time (This happens while swimming also not just while in impure water )
Answer» Why do our hands get shriwlled up when we are in water for a long time (This happens while swimming also not just while in impure water )

Discussion

8944.	Differentiate between physical changes and chemical changes?
Answer» Differentiate between physical changes and chemical changes?

Discussion

8945.	What is electronic configuration, atomic number and mass of iron?
Answer» What is electronic configuration, atomic number and mass of iron?

Discussion

8946.	Silicon dioxide is commonly known as:
Answer» Silicon dioxide is commonly known as:

Discussion

8947.	Question 1 (d) Classify the following as chemical or physical changes: d. Boiling of water to form steam
Answer» Question 1 (d) Classify the following as chemical or physical changes: d. Boiling of water to form steam

Discussion

8948.	Name the scientist who gae atomic theory of matter.
Answer» Name the scientist who gae atomic theory of matter.

Discussion

8949.	Question 1 A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
Answer» Question 1 A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.

Discussion

8950.	Identify the correct statement about H2O2
Answer» Identify the correct statement about $H_{2} O_{2}$

Discussion

Explore topic-wise InterviewSolutions in .

Which atom is the smallest atom of all?

Question 5 A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement? (a) Water, air, wind (b) Air, sugar, oil (c) Oxygen, water, sugar (d) Salt, juice, air

If you take honey on to your fingers, it gets stuck. Which of the following is the reason for this sticky nature of honey?

Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?

What state of matter is fire?

The basic structural unit of silicates is:

Which one is an acidic salt?

___________ is a mixture and ____________ is a solution.

Question 1 How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25∘C), which are miscible with each other?

(a) What are the two ways in which the physical states of matter can be changed ? (b) Draw the 'states of matter triangle' of show the interconversion of states of matter ? (c) How can the evaporation of a liquid be made faster ?

How many electrons are present in one single bond formed between two atoms?

Hydrogen shows characteristics similar to elements of which of the following group/groups

Definition of acid and basic radicals.

Identify the element which exhibits anomalous behaviour so that it can be placed in two different groups of the periodic table.

Complete the given reaction. CO2 + →NaHCO3

How many electrons are present in 9g of water

What is chromatography? what it used for??

Xenon is treated as noble gas but when you see its electronic configuration ,you will come to know that it's outermost shell have four electrons instead of eight electrons. This same happens with krypton also. I want to know why?

What is the percentage of water in human body

The atomic number and the mass number of an element A are 14 and 28 respectively. The number of neutrons are:

Question 9 (a) Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below: What will be the action of gas on: (i) dry litmus paper? (ii) moist litmus paper?

Electron affinity is the ___.

Is it possible to change the temperature and pressure of a fixed mass of gas without changing its volume? Explain your answer.

The bond that exists between NH3 and BF3 is called ___ .

Question 46 (a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden Symbols of these are given below. Complete the puzzle 1. CI 7. He 2. H 8. F 3. Ar 9. Kr 4. O 10. Rn 5. Xe 11. Ne 6. N (b) Identify the total number of inert gases, their names and symbols from this crossword puzzle

Which of the following is not a correct match? Polymer Monomer/s

Nitrogen has the electronic configuration 1s2,2s2 2p1x 2p1y 2p1z and not 1s2,2s2 2p2x 2p1y 2p0z which is determined by

Why can't the clothes dry fast when they are spreaded one over the other?

When ammonia gas reacts with hydrogen chloride, which state of matter is the product in?

Balance the following equation by short-cut method, and write the coefficient for O2C5H11NH2+O2→CO2+H2O+NO2___

Why blood does not come out when we burn our body

Which method is usually used to separate coloured substance from each other?

What do we call those particles which have A. more electrons than the normal atoms B. Less electron than the normal atoms

Which among the following statements about hydrogen is correct?

Is sponge a solid. If so, please explain

What is Grahams law of diffusion?explain

Oxygen exhibits +2 oxidation state in the compound:

If a child is eating bread, our body decomposes it into carbon dioxide and water. Which type of reaction is this?

What is the value of 500 Mg in kilogram?

The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of an element as its symbol was:

Zinc reacts with the concentrated solution of sodium hydroxide ___ gas is liberated.

The rate of oxidation of chloroform decreases in the presence of alcohol. Alcohol is a/an ___ for this reaction.

Why do our hands get shriwlled up when we are in water for a long time (This happens while swimming also not just while in impure water )

Differentiate between physical changes and chemical changes?

What is electronic configuration, atomic number and mass of iron?

Silicon dioxide is commonly known as:

Question 1 (d) Classify the following as chemical or physical changes: d. Boiling of water to form steam

Name the scientist who gae atomic theory of matter.

Question 1 A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.

Identify the correct statement about H2O2

_ is a mixture and __ is a solution.