7248 + Interview Questions in Chemistry Page 145 InterviewSolution

7201.	Which of the following plastics do not have cross-links between their polymer chains? A. Nylon B. Melamine C. Polyvinyl Chloride D. Bakelite
Answer» Which of the following plastics do not have cross-links between their polymer chains? A. Nylon B. Melamine C. Polyvinyl Chloride D. Bakelite

Discussion

7202.	Identify the semi-synthetic fibre.
Answer» Identify the semi-synthetic fibre.

Discussion

7203.	Name one substance which undergoes spontaneous combustion (or burns in air at room temperature).
Answer» Name one substance which undergoes spontaneous combustion (or burns in air at room temperature).

Discussion

7204.	Which of the following oxides upon dissolution in rainwater causes acid rain?
Answer» Which of the following oxides upon dissolution in rainwater causes acid rain?

Discussion

7205.	In the reactivity series you have added carbon after aluminium.... But my teacher hasn't..... So, who is right now you or my teacher.????? WHOM SHOULD I FOLLOW NOW AS TOMORROW IS MY TEST...... 😧😧😧😧
Answer» In the reactivity series you have added carbon after aluminium.... But my teacher hasn't..... So, who is right now you or my teacher.????? WHOM SHOULD I FOLLOW NOW AS TOMORROW IS MY TEST...... 😧😧😧😧

7205.

In the reactivity series you have added carbon after aluminium.... But my teacher hasn't..... So, who is right now you or my teacher.????? WHOM SHOULD I FOLLOW NOW AS TOMORROW IS MY TEST...... 😧😧😧😧

Answer»

In the reactivity series you have added carbon after aluminium....

But my teacher hasn't.....

So, who is right now you or my teacher.?????

WHOM SHOULD I FOLLOW NOW AS TOMORROW IS MY TEST......

😧😧😧😧

Discussion

7206.	Identify the appropriate category in which combustion can be categorised.
Answer» Identify the appropriate category in which combustion can be categorised.

Discussion

7207.	Rayon clothes are comfortable to wear in ___ season.
Answer» Rayon clothes are comfortable to wear in ___ season.

Discussion

7208.	What is meant by oxidised? The nitric oxide is oxidised again and nitrogen dioxide is formed
Answer» What is meant by oxidised? The nitric oxide is oxidised again and nitrogen dioxide is formed

Discussion

7209.	Which zone is responsible for most of the light emitted by a candle?
Answer» Which zone is responsible for most of the light emitted by a candle?

Discussion

7210.	What steps should be taken to balance carbon dioxide in the atmosphere ?
Answer» What steps should be taken to balance carbon dioxide in the atmosphere ?

Discussion

7211.	Can molten metals carry out electolysis?
Answer» Can molten metals carry out electolysis?

Discussion

7212.	Explain kinetic theory of matter in the case of evaporation?
Answer» Explain kinetic theory of matter in the case of evaporation?

Discussion

7213.	Explain how, burning of fuels such as coal, petrol and diesel leads to acid rain. How is acid rain harmful?
Answer» Explain how, burning of fuels such as coal, petrol and diesel leads to acid rain. How is acid rain harmful?

Discussion

7214.	The monomer of polyester is:
Answer» The monomer of polyester is:

Discussion

7215.	A tester is made to test the conductivity of poor conductor liquids. In the tester, LED bulb is used in the place of normal bulb because LED bulb needs ____ electric current in comparison.
Answer» A tester is made to test the conductivity of poor conductor liquids. In the tester, LED bulb is used in the place of normal bulb because LED bulb needs ____ electric current in comparison.

7215.

A tester is made to test the conductivity of poor conductor liquids. In the tester, LED bulb is used in the place of normal bulb because LED bulb needs ____ electric current in comparison.

Answer»

A tester is made to test the conductivity of poor conductor liquids. In the tester, LED bulb is used in the place of normal bulb because LED bulb needs ____ electric current in comparison.

Discussion

7216.	Which of the following is/are not matter?
Answer» Which of the following is/are not matter?

Discussion

7217.	Odd terms and explain:- 1. Water,mercury,bromine,petrol
Answer» Odd terms and explain:- 1. Water,mercury,bromine,petrol

Discussion

7218.	The process of making silk from silkworm is known as ______.
Answer» The process of making silk from silkworm is known as ______.

Discussion

7219.	What happens when, (a) dilute hydrochloric acid is poured on a copper plate
Answer» What happens when, (a) dilute hydrochloric acid is poured on a copper plate

Discussion

7220.	Question 9 Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from the synthetic material? Advise Rana, giving your reason.
Answer» Question 9 Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from the synthetic material? Advise Rana, giving your reason.

Discussion

7221.	Structures of nuclei of three atoms A, B and C are given below: A has 90 protons and 146 neutrons. B has 92 protons and 146 neutrons. C has 90 protons and 148 neutrons. Based on the above data, A and C are isotopes; B and C are ___.
Answer» Structures of nuclei of three atoms A, B and C are given below: A has 90 protons and 146 neutrons. B has 92 protons and 146 neutrons. C has 90 protons and 148 neutrons. Based on the above data, A and C are isotopes; B and C are ___.

Discussion

7222.	The smallest particle of an element which can take part in chemical reactions and may or may not exist independently is the
Answer» The smallest particle of an element which can take part in chemical reactions and may or may not exist independently is the

Discussion

7223.	Internal energy change for combustion of ethanol is 416.5 kJ mol−1. The calorific value of ethanol at 300 K in (kJ) is (Take R= 25/3 J/molK)
Answer» Internal energy change for combustion of ethanol is 416.5 $k J m o l^{- 1}$ . The calorific value of ethanol at 300 K in $(k J)$ is (Take R= 25/3 J/molK)

Discussion

7224.	The screw driver used by an electrician has a plastic or wooden handle.Why ?
Answer» The screw driver used by an electrician has a plastic or wooden handle.Why ?

Discussion

7225.	Which of the following factors affect the process of corrosion?
Answer» Which of the following factors affect the process of corrosion?

Discussion

7226.	Select the least polluting fuel used in vehicle:
Answer» Select the least polluting fuel used in vehicle:

Discussion

7227.	What is meant by subatomic particle
Answer» What is meant by subatomic particle

Discussion

7228.	The maximum capacity of the first shell is:
Answer» The maximum capacity of the first shell is:

Discussion

7229.	Question 7 Which of the following is not a greenhouse gas? a) Carbon dioxide b) Sulphur dioxide c) Methane d) Nitrogen
Answer» Question 7 Which of the following is not a greenhouse gas? a) Carbon dioxide b) Sulphur dioxide c) Methane d) Nitrogen

Discussion

7230.	Can we consume distilled water
Answer» Can we consume distilled water

Discussion

7231.	What makes litmus paper to change its colour?
Answer» What makes litmus paper to change its colour?

Discussion

7232.	What is suspension and colloidal solution
Answer» What is suspension and colloidal solution

Discussion

7233.	Why do most of elements form ions while entering into chemical reactions?
Answer» Why do most of elements form ions while entering into chemical reactions?

Discussion

7234.	Why does nylon become very popular for making clothes for mankind?
Answer» Why does nylon become very popular for making clothes for mankind?

Discussion

7235.	What is obtained when a metal oxide of the highly reactive metals react with water?
Answer» What is obtained when a metal oxide of the highly reactive metals react with water?

Discussion

7236.	C60 contains
Answer» $C_{60}$ contains

Discussion

7237.	Hydrochloric acid is acidic in aqueous solution because there are more ___ ions than ___ ions.
Answer» Hydrochloric acid is acidic in aqueous solution because there are more ___ ions than ___ ions.

Discussion

7238.	The most common fire extinguisher is:
Answer» The most common fire extinguisher is:

Discussion

7239.	Cooked food is an example of ___ change.
Answer» Cooked food is an example of ___ change.

Discussion

7240.	Write the full form of PVC. Is it thermoplastic or thermosetting plastic ?
Answer» Write the full form of PVC. Is it thermoplastic or thermosetting plastic ?

Discussion

7241.	The property of virtue of which metals can be drawn into wire is known as:
Answer» The property of virtue of which metals can be drawn into wire is known as:

Discussion

7242.	Name a fossil fuel other than coal and petroleum.
Answer» Name a fossil fuel other than coal and petroleum.

Discussion

7243.	Categorize the following substances as Metals and Non-metals: Graphite, Zinc, Diamond, Oxygen, Sodium, Aluminium, Silver, Carbon, Mercury, Phosphorous [5 MARKS]
Answer» Categorize the following substances as Metals and Non-metals: Graphite, Zinc, Diamond, Oxygen, Sodium, Aluminium, Silver, Carbon, Mercury, Phosphorous [5 MARKS]

Discussion

7244.	Industrially, hydrogen is prepared by passing ___ over red-hot coke at high temperature.
Answer» Industrially, hydrogen is prepared by passing ___ over red-hot coke at high temperature.

Discussion

7245.	If an atom A has a mass number 'x' and atomic number 'y' ( Axy ) and it forms an ion A− by losing an electron. What can we say about the mass number of the ion?
Answer» If an atom A has a mass number 'x' and atomic number 'y' ( $A_{y}^{x}$ ) and it forms an ion $A^{-}$ by losing an electron. What can we say about the mass number of the ion?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following plastics do not have cross-links between their polymer chains? A. Nylon B. Melamine C. Polyvinyl Chloride D. Bakelite

Identify the semi-synthetic fibre.

Name one substance which undergoes spontaneous combustion (or burns in air at room temperature).

Which of the following oxides upon dissolution in rainwater causes acid rain?

In the reactivity series you have added carbon after aluminium.... But my teacher hasn't..... So, who is right now you or my teacher.????? WHOM SHOULD I FOLLOW NOW AS TOMORROW IS MY TEST...... 😧😧😧😧

Identify the appropriate category in which combustion can be categorised.

Rayon clothes are comfortable to wear in ___ season.

What is meant by oxidised? The nitric oxide is oxidised again and nitrogen dioxide is formed

Which zone is responsible for most of the light emitted by a candle?

What steps should be taken to balance carbon dioxide in the atmosphere ?

Can molten metals carry out electolysis?

Explain kinetic theory of matter in the case of evaporation?

Explain how, burning of fuels such as coal, petrol and diesel leads to acid rain. How is acid rain harmful?

The monomer of polyester is:

A tester is made to test the conductivity of poor conductor liquids. In the tester, LED bulb is used in the place of normal bulb because LED bulb needs ____ electric current in comparison.

Which of the following is/are not matter?

Odd terms and explain:- 1. Water,mercury,bromine,petrol

The process of making silk from silkworm is known as ______.

What happens when, (a) dilute hydrochloric acid is poured on a copper plate

Question 9 Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from the synthetic material? Advise Rana, giving your reason.

Structures of nuclei of three atoms A, B and C are given below: A has 90 protons and 146 neutrons. B has 92 protons and 146 neutrons. C has 90 protons and 148 neutrons. Based on the above data, A and C are isotopes; B and C are ___.

The smallest particle of an element which can take part in chemical reactions and may or may not exist independently is the

Internal energy change for combustion of ethanol is 416.5 kJ mol−1. The calorific value of ethanol at 300 K in (kJ) is (Take R= 25/3 J/molK)

The screw driver used by an electrician has a plastic or wooden handle.Why ?

Which of the following factors affect the process of corrosion?

Select the least polluting fuel used in vehicle:

What is meant by subatomic particle

The maximum capacity of the first shell is:

Question 7 Which of the following is not a greenhouse gas? a) Carbon dioxide b) Sulphur dioxide c) Methane d) Nitrogen

Can we consume distilled water

What makes litmus paper to change its colour?

What is suspension and colloidal solution

Why do most of elements form ions while entering into chemical reactions?

Why does nylon become very popular for making clothes for mankind?

What is obtained when a metal oxide of the highly reactive metals react with water?

C60 contains

Hydrochloric acid is acidic in aqueous solution because there are more ___ ions than ___ ions.

The most common fire extinguisher is:

Cooked food is an example of ___ change.

Write the full form of PVC. Is it thermoplastic or thermosetting plastic ?

The property of virtue of which metals can be drawn into wire is known as:

Name a fossil fuel other than coal and petroleum.

Categorize the following substances as Metals and Non-metals: Graphite, Zinc, Diamond, Oxygen, Sodium, Aluminium, Silver, Carbon, Mercury, Phosphorous [5 MARKS]

Industrially, hydrogen is prepared by passing ___ over red-hot coke at high temperature.

If an atom A has a mass number 'x' and atomic number 'y' ( Axy ) and it forms an ion A− by losing an electron. What can we say about the mass number of the ion?

Hydrochloric acid is acidic in aqueous solution because there are more _ ions than _ ions.