10223 + Interview Questions in Chemistry Page 106 InterviewSolution

5251.	How to balance chemical equations . Please give some examples.
Answer» How to balance chemical equations . Please give some examples.

Discussion

5252.	How is to find the atomicity of different elements ? Explain by giving examples.
Answer» How is to find the atomicity of different elements ? Explain by giving examples.

Discussion

5253.	A gas is found to have formula (CO)_x. It's VD is 70 the value of x must be :- (1)7 (2)4 (3)5 (4)6
Answer» A gas is found to have formula (CO)_x. It's VD is 70 the value of x must be :- (1)7 (2)4 (3)5 (4)6

Discussion

5254.	If C6H12O6 + 6O2 + 6H2O ---->6CO2 + 12H2O + energy is a balanced equation then what is the formula of energy when everything gets balanced ?
Answer» If C6H12O6 + 6O2 + 6H2O ---->6CO2 + 12H2O + energy is a balanced equation then what is the formula of energy when everything gets balanced ?

Discussion

5255.	What is acrylic ? State one important property of acrylic.
Answer» What is acrylic ? State one important property of acrylic.

Discussion

5256.	Explain the term RIGIDITY, COMPREESIBILITY, FLUIDITY.
Answer» Explain the term RIGIDITY, COMPREESIBILITY, FLUIDITY.

Discussion

5257.	Which two properties are common to all forms of matter?
Answer» Which two properties are common to all forms of matter?

Discussion

5258.	The non-polar molecule is :(a) NF3(b) SO3(c) CHCl3(d) ClO2
Answer» The non-polar molecule is : (a) NF3 (b) SO3 (c) CHCl3 (d) ClO2

Discussion

5259.	Suggest three reasons why you think air is a mixture and water is a compound
Answer» Suggest three reasons why you think air is a mixture and water is a compound

Discussion

5260.	Caculate the mass of 0.72 gram molecules of CO_2
Answer» Caculate the mass of 0.72 gram molecules of CO_2

Discussion

5261.	STATEMENT 1: A solution has a solvent and a solute. STATEMENT 2: The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called solute. STATEMENT 3: Particles of the solution can be seen with our naked eyes. STATEMENT 4: Particles of the solution can be separated by the process of filtration.
Answer» STATEMENT 1: A solution has a solvent and a solute. STATEMENT 2: The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called solute. STATEMENT 3: Particles of the solution can be seen with our naked eyes. STATEMENT 4: Particles of the solution can be separated by the process of filtration.

5261.

STATEMENT 1: A solution has a solvent and a solute. STATEMENT 2: The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called solute. STATEMENT 3: Particles of the solution can be seen with our naked eyes. STATEMENT 4: Particles of the solution can be separated by the process of filtration.

Answer»

STATEMENT 1: A solution has a solvent and a solute.

STATEMENT 2: The component of the solution that is dissolved in the solvent

(usually present in lesser quantity) is called solute.

STATEMENT 3: Particles of the solution can be seen with our naked eyes.

STATEMENT 4: Particles of the solution can be separated by the process of filtration.

Discussion

5262.	Statement I: Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.Statement: II: The reaction between nitrogen and oxygen requires high temperature.
Answer» Statement I: Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Statement: II: The reaction between nitrogen and oxygen requires high temperature.

Discussion

5263.	Select the options in which the element given in the square brackets has an oxidation number of +5.
Answer» Select the options in which the element given in the square brackets has an oxidation number of +5.

Discussion

5264.	The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably
Answer» The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably

Discussion

5265.	Difference between simple and compound leaf
Answer» Difference between simple and compound leaf

Discussion

5266.	What is catalyst? Give an example.
Answer» What is catalyst? Give an example.

Discussion

5267.	17 A polymer contains 4% of sulphur it find out the minimum molar mass of the polymer
Answer» 17 A polymer contains 4% of sulphur it find out the minimum molar mass of the polymer

Discussion

5268.	What is BEC? What is it's full form? What is it and what are it's example? Why is it difficult to obtain this state of matter?
Answer» What is BEC? What is it's full form? What is it and what are it's example? Why is it difficult to obtain this state of matter?

Discussion

5269.	What is the total number of electron present in the element calcium?
Answer» What is the total number of electron present in the element calcium?

Discussion

5270.	Exess pressure is
Answer» Exess pressure is

Discussion

5271.	Why does brusting balloon create sound ?
Answer» Why does brusting balloon create sound ?

Discussion

5272.	What is laxative effect of sulphate
Answer» What is laxative effect of sulphate

Discussion

5273.	Arrange the steps involved in obtaining oxygen gas from air.1. Liquify air by increasing the pressure and decreasing the temperature.2. Collect the liquid oxygen in a jar.3. CO2 separates out as dry ice.4. Separate nitrogen gas through a fractionating column.
Answer» Arrange the steps involved in obtaining oxygen gas from air. 1. Liquify air by increasing the pressure and decreasing the temperature. 2. Collect the liquid oxygen in a jar. 3. $C O_{2}$ separates out as dry ice. 4. Separate nitrogen gas through a fractionating column.

Discussion

5274.	Why graphite rods are used in the process of electrolyses
Answer» Why graphite rods are used in the process of electrolyses

Discussion

5275.	Why do people use pressure cooker at high altitude
Answer» Why do people use pressure cooker at high altitude

Discussion

5276.	Question 16. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Formation Choose the correct option from the following: (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv)
Answer» Question 16. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Formation Choose the correct option from the following: (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv)

5276.

Question 16. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Formation Choose the correct option from the following: (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv)

Answer»

Question 16.
Which of the following phenomena occur, when a small amount of acid is added to water?
(i) Ionisation
(ii) Neutralisation
(iii) Dilution
(iv) Formation

Choose the correct option from the following:
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (ii) and (iv)

Discussion

5277.	If the value of CP for nitrogen gas is 7 joule Kelvin mole inverse then the value of delta H on heating 28 gram of the Nitrogen gas from zero degree celsius to 100 degree Celsius at cons†an t pressure will be
Answer» If the value of CP for nitrogen gas is 7 joule Kelvin mole inverse then the value of delta H on heating 28 gram of the Nitrogen gas from zero degree celsius to 100 degree Celsius at cons†an t pressure will be

Discussion

5278.	The diagram shows an experimental set-up for the laboratory preparation of a pungent smelling gas. The gas is alkaline in nature.(i) Name the gas collected in the jar.(ii) Write the balanced equation for the above preparation.(iii) How is the gas being collected?(iv) Name the drying agent used.(v) How will you find that the jar is full of gas?
Answer» The diagram shows an experimental set-up for the laboratory preparation of a pungent smelling gas. The gas is alkaline in nature. (i) Name the gas collected in the jar. (ii) Write the balanced equation for the above preparation. (iii) How is the gas being collected? (iv) Name the drying agent used. (v) How will you find that the jar is full of gas?

Discussion

5279.	Explain the chemical reaction between potassium iodide and lead nitrate and also specify the products formed.
Answer» Explain the chemical reaction between potassium iodide and lead nitrate and also specify the products formed.

Discussion

5280.	Write the chemical formula of calcium carbonate.
Answer» Write the chemical formula of calcium carbonate.

Discussion

5281.	Hydrolysis of water is a _______ reaction.
Answer» Hydrolysis of water is a _______ reaction.

Discussion

5282.	The pH of 0.2M aqueous solution of NH4Cl will be
Answer» The pH of 0.2M aqueous solution of NH4Cl will be

Discussion

5283.	Question 30 A sample of vitamin C is known to contain 2.58×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
Answer» Question 30 A sample of vitamin C is known to contain $2.58 \times 10^{24}$ oxygen atoms. How many moles of oxygen atoms are present in the sample?

Discussion

5284.	find the value of a=[{x}]+[{-x}]+{[x]}+{[-x]}+{x}+{-x
Answer» find the value of a=[{x}]+[{-x}]+{[x]}+{[-x]}+{x}+{-x

Discussion

5285.	11. a solid AB has the NaCL structure. if the radius of cation A+ is 120pm, the maximum value of the radius of he anion B- is
Answer» 11. a solid AB has the NaCL structure. if the radius of cation A+ is 120pm, the maximum value of the radius of he anion B- is

Discussion

5286.	(i) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom.(ii) The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
Answer» (i) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom. (ii) The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?

Discussion

5287.	If eme = 1.758820 × 1011 C kg−1 The mass of an electron is
Answer» If $\frac{e}{m_{e}}$ = 1.758820 $\times$ $10^{11}$ C ${k g}^{- 1}$ The mass of an electron is

5287.

If eme = 1.758820 × 1011 C kg−1 The mass of an electron is

Answer»

If $\frac{e}{m_{e}}$ = 1.758820 $\times$ $10^{11}$ C ${k g}^{- 1}$

The mass of an electron is

Discussion

5288.	The equivalent mass of metal M is x and the formula of its oxide is MnOm. The atomic mass of metal will be:
Answer» The equivalent mass of metal $M$ is $x$ and the formula of its oxide is $M_{n} O_{m}$ . The atomic mass of metal will be:

Discussion

5289.	50 ml of gas A diffuses through a porus plug in the same time as required for diffusion of 40 ml of gas B under identical conditions of temp&presssure. if the molecular mass of gas A is 64,the molecular mass of gas B would b
Answer» 50 ml of gas A diffuses through a porus plug in the same time as required for diffusion of 40 ml of gas B under identical conditions of temp&presssure. if the molecular mass of gas A is 64,the molecular mass of gas B would b

Discussion

5290.	Mention the significance of a chemical symbol. Write the chemical symbols for copper, sodium, potassium, radon, silver and gold.
Answer» Mention the significance of a chemical symbol. Write the chemical symbols for copper, sodium, potassium, radon, silver and gold.

Discussion

5291.	30.The radius of nucleus is approximately_times smaller than the radius of atom 1) 100000 2) 5000 3) 10000 4) 200
Answer» 30.The radius of nucleus is approximately_times smaller than the radius of atom 1) 100000 2) 5000 3) 10000 4) 200

Discussion

5292.	Burst the bubbles which will give 10 as the answer.
Answer» Burst the bubbles which will give 10 as the answer.

Discussion

5293.	Question 38 A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. (a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved. (b) Name the black substance formed and give its chemical formula.
Answer» Question 38 A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. (a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved. (b) Name the black substance formed and give its chemical formula.

5293.

Question 38 A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining. (a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved. (b) Name the black substance formed and give its chemical formula.

Answer»

Question 38

A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.

(a) Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.

(b) Name the black substance formed and give its chemical formula.

Discussion

5294.	The relationship between the length (l) and radius (r) of an ideal transition curve is given by
Answer» The relationship between the length (l) and radius (r) of an ideal transition curve is given by

Discussion

5295.	In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005 %. Certainity with which the position of the electron can be located is(h = 6.6 × 10−34 kg m2 s−1,mass of electron, em = 9.1 × 10−31 kg)
Answer» In an atom, an electron is moving with a speed of $600 m / s$ with an accuracy of 0.005 %. Certainity with which the position of the electron can be located is ( $h = 6.6 \times 10^{- 34} k g m^{2} s^{- 1}$ ,mass of electron, $e^{m} = 9.1 \times 10^{- 31} k g$ )

5295.

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005 %. Certainity with which the position of the electron can be located is(h = 6.6 × 10−34 kg m2 s−1,mass of electron, em = 9.1 × 10−31 kg)

Answer»

In an atom, an electron is moving with a speed of $600 m / s$ with an accuracy of 0.005 %. Certainity with which the position of the electron can be located is

( $h = 6.6 \times 10^{- 34} k g m^{2} s^{- 1}$ ,mass of electron, $e^{m} = 9.1 \times 10^{- 31} k g$ )

Discussion

5296.	Question 15The following reaction is used for the preparation of oxygen gas in the laboratory. 2KClO3(s)Heat→2KCl (s)+3O2(g)Which of the following statement(s) is (are) correct about the reaction?(a) It is a decomposition reaction and endothermic in nature.(b) It is a combination reaction.(c) It is a decomposition reaction and accompanied by release of heat.(d) It is a photochemical decomposition reaction and exothermic in nature.
Answer» Question 15 The following reaction is used for the preparation of oxygen gas in the laboratory. $2 {KClO}_{3} (s) Heat \to 2 KCl (s) + 3 O_{2} (g)$ Which of the following statement(s) is (are) correct about the reaction? (a) It is a decomposition reaction and endothermic in nature. (b) It is a combination reaction. (c) It is a decomposition reaction and accompanied by release of heat. (d) It is a photochemical decomposition reaction and exothermic in nature.

Discussion

5297.	What is fractional distillation? with example.
Answer» What is fractional distillation? with example.

Discussion

5298.	Calculate the total number of valence electrones in 6.4 gram of O^2
Answer» Calculate the total number of valence electrones in 6.4 gram of O^2

Discussion

5299.	Internal energy and pressure of a gas per unit volume are related as
Answer» Internal energy and pressure of a gas per unit volume are related as

5299.

Internal energy and pressure of a gas per unit volume are related as

Answer»

Internal energy and pressure of a gas per unit volume are related as

Discussion

5300.	Give two use of suspension. Why do we use warm water and not use hot water during the preparation of a colloid of egg albumin? Explain why water is known as universal solvent? Why water + starch shows Tyndall effect explain?
Answer» Give two use of suspension. Why do we use warm water and not use hot water during the preparation of a colloid of egg albumin? ^{Explain why water is known as universal solvent?} Why water + starch shows Tyndall effect explain?

5300.

Give two use of suspension. Why do we use warm water and not use hot water during the preparation of a colloid of egg albumin? Explain why water is known as universal solvent? Why water + starch shows Tyndall effect explain?

Answer»

Give two use of suspension.

Why do we use warm water and not use hot water during the preparation of a colloid of egg albumin?

^{Explain why water is known as universal solvent?}

Why water + starch shows Tyndall effect explain?

Discussion

Explore topic-wise InterviewSolutions in .

How to balance chemical equations . Please give some examples.

How is to find the atomicity of different elements ? Explain by giving examples.

A gas is found to have formula (CO)_x. It's VD is 70 the value of x must be :- (1)7 (2)4 (3)5 (4)6

If C6H12O6 + 6O2 + 6H2O ---->6CO2 + 12H2O + energy is a balanced equation then what is the formula of energy when everything gets balanced ?

What is acrylic ? State one important property of acrylic.

Explain the term RIGIDITY, COMPREESIBILITY, FLUIDITY.

Which two properties are common to all forms of matter?

The non-polar molecule is :(a) NF3(b) SO3(c) CHCl3(d) ClO2

Suggest three reasons why you think air is a mixture and water is a compound

Caculate the mass of 0.72 gram molecules of CO_2

Statement I: Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.Statement: II: The reaction between nitrogen and oxygen requires high temperature.

Select the options in which the element given in the square brackets has an oxidation number of +5.

The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably

Difference between simple and compound leaf

What is catalyst? Give an example.

17 A polymer contains 4% of sulphur it find out the minimum molar mass of the polymer

What is BEC? What is it's full form? What is it and what are it's example? Why is it difficult to obtain this state of matter?

What is the total number of electron present in the element calcium?

Exess pressure is

Why does brusting balloon create sound ?

What is laxative effect of sulphate

Arrange the steps involved in obtaining oxygen gas from air.1. Liquify air by increasing the pressure and decreasing the temperature.2. Collect the liquid oxygen in a jar.3. CO2 separates out as dry ice.4. Separate nitrogen gas through a fractionating column.

Why graphite rods are used in the process of electrolyses

Why do people use pressure cooker at high altitude

Question 16. Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Formation Choose the correct option from the following: (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv)

If the value of CP for nitrogen gas is 7 joule Kelvin mole inverse then the value of delta H on heating 28 gram of the Nitrogen gas from zero degree celsius to 100 degree Celsius at cons†an t pressure will be

Explain the chemical reaction between potassium iodide and lead nitrate and also specify the products formed.

Write the chemical formula of calcium carbonate.

Hydrolysis of water is a _______ reaction.

The pH of 0.2M aqueous solution of NH4Cl will be

Question 30 A sample of vitamin C is known to contain 2.58×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?

find the value of a=[{x}]+[{-x}]+{[x]}+{[-x]}+{x}+{-x

11. a solid AB has the NaCL structure. if the radius of cation A+ is 120pm, the maximum value of the radius of he anion B- is

(i) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom.​(ii) The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?

If eme = 1.758820 × 1011 C kg−1 The mass of an electron is

The equivalent mass of metal M is x and the formula of its oxide is MnOm. The atomic mass of metal will be:

50 ml of gas A diffuses through a porus plug in the same time as required for diffusion of 40 ml of gas B under identical conditions of temp&presssure. if the molecular mass of gas A is 64,the molecular mass of gas B would b

Mention the significance of a chemical symbol. Write the chemical symbols for copper, sodium, potassium, radon, silver and gold.

30.The radius of nucleus is approximately_times smaller than the radius of atom 1) 100000 2) 5000 3) 10000 4) 200

Burst the bubbles which will give 10 as the answer.

The relationship between the length (l) and radius (r) of an ideal transition curve is given by

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005 %. Certainity with which the position of the electron can be located is(h = 6.6 × 10−34 kg m2 s−1,mass of electron, em = 9.1 × 10−31 kg)

What is fractional distillation? with example.

Calculate the total number of valence electrones in 6.4 gram of O^2

Internal energy and pressure of a gas per unit volume are related as

Give two use of suspension. Why do we use warm water and not use hot water during the preparation of a colloid of egg albumin? Explain why water is known as universal solvent? Why water + starch shows Tyndall effect explain?

(i) Describe the Rutherford's model of an atom. State one drawback of Rutherford's model of the atom.(ii) The mass number of an element is 23 and it contains 11 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?