10223 + Interview Questions in Chemistry Page 164 InterviewSolution

8151.	Ozone layer depletion is caused due to ___. (CFCs/methane/nitrogen oxides/sulphur dioxide)
Answer» Ozone layer depletion is caused due to ___. (CFCs/methane/nitrogen oxides/sulphur dioxide)

8151.

Ozone layer depletion is caused due to ___. (CFCs/methane/nitrogen oxides/sulphur dioxide)

Answer»

Ozone layer depletion is caused due to ___.

(CFCs/methane/nitrogen oxides/sulphur dioxide)

8152.	In which of the following reactions is hydrogen undergoing oxidation?
Answer» In which of the following reactions is hydrogen undergoing oxidation?

Discussion

8153.	Thomson's model of atom was proved wrong by which scientist on the basis of alpha ray scattering experiment?
Answer» Thomson's model of atom was proved wrong by which scientist on the basis of alpha ray scattering experiment?

Discussion

8154.	An element A forms an oxide A2O5. (a) What is the valency of element A? (b) What will be the formula of chloride of A?
Answer» An element A forms an oxide $A_{2} O_{5}$ . (a) What is the valency of element A? (b) What will be the formula of chloride of A?

8154.

An element A forms an oxide A2O5. (a) What is the valency of element A? (b) What will be the formula of chloride of A?

Answer»

An element A forms an oxide $A_{2} O_{5}$ .

(a) What is the valency of element A?
(b) What will be the formula of chloride of A?

Discussion

8155.	Which one of the following statements is not true ? (a) the molecules in a solid vibrate about a fixed position (b) the molecules in a liquid are arranged in a regular pattern (c) the molecules in a gas exert negligibly small forces on each other, except during collisions (d) the molecules of a gas occupy all the space avilable
Answer» Which one of the following statements is not true ? (a) the molecules in a solid vibrate about a fixed position (b) the molecules in a liquid are arranged in a regular pattern (c) the molecules in a gas exert negligibly small forces on each other, except during collisions (d) the molecules of a gas occupy all the space avilable

8155.

Which one of the following statements is not true ? (a) the molecules in a solid vibrate about a fixed position (b) the molecules in a liquid are arranged in a regular pattern (c) the molecules in a gas exert negligibly small forces on each other, except during collisions (d) the molecules of a gas occupy all the space avilable

Answer»

Which one of the following statements is not true ?

(a) the molecules in a solid vibrate about a fixed position

(b) the molecules in a liquid are arranged in a regular pattern

(c) the molecules in a gas exert negligibly small forces on each other, except during collisions

(d) the molecules of a gas occupy all the space avilable

Discussion

8156.	What is the synthesis? What kind of chemical reaction is synthesis? Support your answer with an example.
Answer» What is the synthesis? What kind of chemical reaction is synthesis? Support your answer with an example.

Discussion

8157.	An element X forms an oxide XO3, the valency of element X is ___.
Answer» An element X forms an oxide $X O_{3}$ , the valency of element X is ___.

Discussion

8158.	Question 6(a) Calculate the molar mass of the following substances: (a) Ethyne, C2H2
Answer» Question 6(a) Calculate the molar mass of the following substances: $(a) E t h y n e, C_{2} H_{2}$

Discussion

8159.	The radius of an electron falls under the range of ___ .
Answer» The radius of an electron falls under the range of ___ .

Discussion

8160.	Which of the following molecule has the maximum ionic character?
Answer» Which of the following molecule has the maximum ionic character?

Discussion

8161.	Radius of atom is of the order of ................ m
Answer» Radius of atom is of the order of ................ m

Discussion

8162.	Chlorine gas turns ___ potassium Iodide solution into ___ colored solution by releasing Iodine. This is a ___ reaction. (mention the colour and type of reaction)
Answer» Chlorine gas turns ___ potassium Iodide solution into ___ colored solution by releasing Iodine. This is a ___ reaction. (mention the colour and type of reaction)

Discussion

8163.	Uncertainty in the position of an electron (mass = 9.1 × 10−31 kg) moving with a velocity 300 ms−1, accurate upto 0.001% will be
Answer» Uncertainty in the position of an electron (mass = $9.1 \times 10^{- 31} k g$ ) moving with a velocity $300 m s^{- 1}$ , accurate upto 0.001% will be

Discussion

8164.	The below question consists of a problem figures and followed by answer figures marked as (A), (B), (C) and (D). You have to select that figure from the set of answer figures which would come in the place of question mark (?) in the problem figure.
Answer» The below question consists of a problem figures and followed by answer figures marked as (A), (B), (C) and (D). You have to select that figure from the set of answer figures which would come in the place of question mark (?) in the problem figure.

8164.

The below question consists of a problem figures and followed by answer figures marked as (A), (B), (C) and (D). You have to select that figure from the set of answer figures which would come in the place of question mark (?) in the problem figure.

Answer»

The below question consists of a problem figures and followed by answer figures marked as (A), (B), (C) and (D). You have to select that figure from the set of answer figures which would come in the place of question mark (?) in the problem figure.

Discussion

8165.	Five 2 reasons why sugar solution is considered to be a mixture.
Answer» Five 2 reasons why sugar solution is considered to be a mixture.

Discussion

8166.	Write three differences between anions and cations.
Answer» Write three differences between anions and cations.

Discussion

8167.	What are the rules to be followed for writing the number of electrons in different energy level or Shell and why
Answer» What are the rules to be followed for writing the number of electrons in different energy level or Shell and why

Discussion

8168.	Why is oxygen considered as a supporter of combustion ?
Answer» Why is oxygen considered as a supporter of combustion ?

Discussion

8169.	Who was Charles G. Barkla?what did he discovered?
Answer» Who was Charles G. Barkla?what did he discovered?

Discussion

8170.	K + H2O -> KOH + H2 . How to balance this equation without hit and trial method.
Answer» K + H₂O -> KOH + H₂ . How to balance this equation without hit and trial method.

Discussion

8171.	Choose the correct option:
Answer» Choose the correct option:

Discussion

8172.	What is the electronic configuration of the second element in the halogen family of the second period?
Answer» What is the electronic configuration of the second element in the halogen family of the second period?

Discussion

8173.	If Avogadro number NA, is changed from 6.022 × 1023 mol−1 to 6.022 × 1020 mol−1, what would change?
Answer» If Avogadro number $N_{A},$ is changed from 6.022 $\times 10^{23} m o l^{- 1}$ to 6.022 $\times 10^{20} m o l^{- 1},$ what would change?

Discussion

8174.	A lab technician was told to prepare ammonia in his lab. What reactants should he use?
Answer» A lab technician was told to prepare ammonia in his lab. What reactants should he use?

Discussion

8175.	Which of the following is the correct order of energy levels in an atom?
Answer» Which of the following is the correct order of energy levels in an atom?

Discussion

8176.	What is the cause of acid rain ? Give any two impacts of acid rain.
Answer» What is the cause of acid rain ? Give any two impacts of acid rain.

Discussion

8177.	Isotopes of oxygen are given below. They have:
Answer» Isotopes of oxygen are given below. They have:

8177.

Isotopes of oxygen are given below. They have:

Answer»

Isotopes of oxygen are given below. They have:

Discussion

8178.	What is the volume of 3 moles of CO2 gas?
Answer» What is the volume of 3 moles of $C O_{2}$ gas?

Discussion

8179.	Which of the following parameters of a substance does not alter during a physical change?
Answer» Which of the following parameters of a substance does not alter during a physical change?

Discussion

8180.	What do you observe when sunlight passes through a dense forest
Answer» What do you observe when sunlight passes through a dense forest

Discussion

8181.	Where does HCl occur naturally as a gas?
Answer» Where does $H C l$ occur naturally as a gas?

Discussion

8182.	The term 'water - pollution' can be defined in several ways. Which of the following statements does not give the correct definition?
Answer» The term 'water - pollution' can be defined in several ways. Which of the following statements does not give the correct definition?

Discussion

8183.	n-butane and iso-butane are
Answer» n-butane and iso-butane are

Discussion

8184.	Amongst the following identify the species with an atom in + 6 oxidation state
Answer» Amongst the following identify the species with an atom in + 6 oxidation state

8184.

Amongst the following identify the species with an atom in + 6 oxidation state

Answer»

Amongst the following identify the species with an atom in + 6 oxidation state

Discussion

8185.	In C+H2O⟶CO+H2, H2O acts as a:
Answer» In $C + H_{2} O ⟶ C O + H_{2}, H_{2} O$ acts as a:

Discussion

8186.	Identify the homologous series among the following: 1. CHOOH 2. C2H3OOH 3. C2H6 4. C3H5OOH 5. Propanone
Answer» Identify the homologous series among the following: 1. $C H O O H$ 2. $C_{2} H_{3} O O H$ 3. $C_{2} H_{6}$ 4. $C_{3} H_{5} O O H$ 5. Propanone

8186.

Identify the homologous series among the following: 1. CHOOH 2. C2H3OOH 3. C2H6 4. C3H5OOH 5. Propanone

Answer»

Identify the homologous series among the following:

1. $C H O O H$

2. $C_{2} H_{3} O O H$

3. $C_{2} H_{6}$

4. $C_{3} H_{5} O O H$

5. Propanone

Discussion

8187.	A neutral atom has an atomic mass of 12 and has 6 neutrons. Find how many electrons, protons and shells are present in this atom. [3 MARKS]
Answer» A neutral atom has an atomic mass of 12 and has 6 neutrons. Find how many electrons, protons and shells are present in this atom. [3 MARKS]

Discussion

8188.	J. J. Thomson performed cathode ray tube experiment in which electricity was passed through a coil in the cathode ray tube and scintillations were observed on the screen. Cathode rays which strike on the screen were nothing but:
Answer» J. J. Thomson performed cathode ray tube experiment in which electricity was passed through a coil in the cathode ray tube and scintillations were observed on the screen. Cathode rays which strike on the screen were nothing but:

Discussion

8189.	Green houses are made up of ___.
Answer» Green houses are made up of ___.

Discussion

8190.	Which of the following element has twice as many electrons in its second shell as it has in its first shell?
Answer» Which of the following element has twice as many electrons in its second shell as it has in its first shell?

Discussion

8191.	Which of the following would weigh the most if the equal number of moles taken?
Answer» Which of the following would weigh the most if the equal number of moles taken?

Discussion

8192.	The subatomic particle called electron was discovered by:
Answer» The subatomic particle called electron was discovered by:

Discussion

8193.	What is meant by (a) Unsaturated (b) Saturated and (c) Supersaturated solutions
Answer» What is meant by (a) Unsaturated (b) Saturated and (c) Supersaturated solutions

8193.

What is meant by (a) Unsaturated (b) Saturated and (c) Supersaturated solutions

Answer»

What is meant by

(a) Unsaturated

(b) Saturated and

(c) Supersaturated solutions

Discussion

8194.	Dustinguish between solids ,liquid ,gas in tabular form under the following characteristics A)rigidity B)intermolecular space C)force of attraction
Answer» Dustinguish between solids ,liquid ,gas in tabular form under the following characteristics A)rigidity B)intermolecular space C)force of attraction

8194.

Dustinguish between solids ,liquid ,gas in tabular form under the following characteristics A)rigidity B)intermolecular space C)force of attraction

Answer»

Dustinguish between solids ,liquid ,gas in tabular form under the following characteristics

A)rigidity

B)intermolecular space

C)force of attraction

Discussion

8195.	Name the separating technique shown in the diagram.
Answer» Name the separating technique shown in the diagram.

8195.

Name the separating technique shown in the diagram.

Answer»

Name the separating technique shown in the diagram.

Discussion

8196.	Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties please define above question
Answer» Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties please define above question

8196.

Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties please define above question

Answer»

Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties

please define above question

Discussion

8197.	Did suspension show tyndall effect?how?
Answer» Did suspension show tyndall effect?how?

Discussion

8198.	Mention the types of mixture on what basis they are classified
Answer» Mention the types of mixture on what basis they are classified

Discussion

8199.	Why Argon has 22 neutrons?
Answer» Why Argon has 22 neutrons?

Discussion

8200.	We all know that water fallen on a floor dries out after sometime.but in a situation, when water is fallen on a floor and the room is without any air or any external source of air is blocked, then will the water dry?
Answer» We all know that water fallen on a floor dries out after sometime.but in a situation, when water is fallen on a floor and the room is without any air or any external source of air is blocked, then will the water dry?

Discussion

Explore topic-wise InterviewSolutions in .

Ozone layer depletion is caused due to ___. (CFCs/methane/nitrogen oxides/sulphur dioxide)

In which of the following reactions is hydrogen undergoing oxidation?

Thomson's model of atom was proved wrong by which scientist on the basis of alpha ray scattering experiment?

An element A forms an oxide A2O5. (a) What is the valency of element A? (b) What will be the formula of chloride of A?

What is the synthesis? What kind of chemical reaction is synthesis? Support your answer with an example.

An element X forms an oxide XO3, the valency of element X is ___.

Question 6(a) Calculate the molar mass of the following substances: (a) Ethyne, C2H2

The radius of an electron falls under the range of ___ .

Which of the following molecule has the maximum ionic character?

Radius of atom is of the order of ................ m

Chlorine gas turns ___ potassium Iodide solution into ___ colored solution by releasing Iodine. This is a ___ reaction. (mention the colour and type of reaction)

Uncertainty in the position of an electron (mass = 9.1 × 10−31 kg) moving with a velocity 300 ms−1, accurate upto 0.001% will be

The below question consists of a problem figures and followed by answer figures marked as (A), (B), (C) and (D). You have to select that figure from the set of answer figures which would come in the place of question mark (?) in the problem figure.

Five 2 reasons why sugar solution is considered to be a mixture.

Write three differences between anions and cations.

What are the rules to be followed for writing the number of electrons in different energy level or Shell and why

Why is oxygen considered as a supporter of combustion ?

Who was Charles G. Barkla?what did he discovered?

K + H2O -&gt; KOH + H2 . How to balance this equation without hit and trial method.

Choose the correct option:

What is the electronic configuration of the second element in the halogen family of the second period?

If Avogadro number NA, is changed from 6.022 × 1023 mol−1 to 6.022 × 1020 mol−1, what would change?

A lab technician was told to prepare ammonia in his lab. What reactants should he use?

Which of the following is the correct order of energy levels in an atom?

What is the cause of acid rain ? Give any two impacts of acid rain.

Isotopes of oxygen are given below. They have:

What is the volume of 3 moles of CO2 gas?

Which of the following parameters of a substance does not alter during a physical change?

What do you observe when sunlight passes through a dense forest

Where does HCl occur naturally as a gas?

The term 'water - pollution' can be defined in several ways. Which of the following statements does not give the correct definition?

n-butane and iso-butane are

Amongst the following identify the species with an atom in + 6 oxidation state

In C+H2O⟶CO+H2, H2O acts as a:

Identify the homologous series among the following: 1. CHOOH 2. C2H3OOH 3. C2H6 4. C3H5OOH 5. Propanone

A neutral atom has an atomic mass of 12 and has 6 neutrons. Find how many electrons, protons and shells are present in this atom. [3 MARKS]

J. J. Thomson performed cathode ray tube experiment in which electricity was passed through a coil in the cathode ray tube and scintillations were observed on the screen. Cathode rays which strike on the screen were nothing but:

Green houses are made up of ___.

Which of the following element has twice as many electrons in its second shell as it has in its first shell?

Which of the following would weigh the most if the equal number of moles taken?

The subatomic particle called electron was discovered by:

What is meant by (a) Unsaturated (b) Saturated and (c) Supersaturated solutions

Dustinguish between solids ,liquid ,gas in tabular form under the following characteristics A)rigidity B)intermolecular space C)force of attraction

Name the separating technique shown in the diagram.

Elements in the halogen family belonging to 17th group in the periodic table show similarity in their properties please define above question

Did suspension show tyndall effect?how?

Mention the types of mixture on what basis they are classified

Why Argon has 22 neutrons?

We all know that water fallen on a floor dries out after sometime.but in a situation, when water is fallen on a floor and the room is without any air or any external source of air is blocked, then will the water dry?

Chlorine gas turns _ potassium Iodide solution into _ colored solution by releasing Iodine. This is a ___ reaction. (mention the colour and type of reaction)

K + H2O -> KOH + H2 . How to balance this equation without hit and trial method.