3275 + Interview Questions in Chemistry Page 1 InterviewSolution

1.	I am unable to understand the following topics:- 1)spinning 2)weaving 3)ginning From the the videos so please help me to understand the above given topics
Answer» I am unable to understand the following topics:- 1)spinning 2)weaving 3)ginning From the the videos so please help me to understand the above given topics

Discussion

2.	BH3 exists in dimer form but then also its octet is not complete then what is the advantage of dimer form?
Answer» BH3 exists in dimer form but then also its octet is not complete then what is the advantage of dimer form?

Discussion

3.	Why doesn't a solid in liquid type solution (eg. brine) solidify on saturation, since all the inter-molecular spaces of the liquid are occupied by the solid particles?
Answer» Why doesn't a solid in liquid type solution (eg. brine) solidify on saturation, since all the inter-molecular spaces of the liquid are occupied by the solid particles?

Discussion

4.	Question 13Write the molecular formulae of all the compounds that can be formed by the combination of following ionsCu2+,Na+,Fe3+,Cl−,SO24,PO3−4
Answer» Question 13 Write the molecular formulae of all the compounds that can be formed by the combination of following ions $C u^{2 +}, N a^{+}, F e^{3 +}, C l^{-}, S O_{4}^{2}, P O_{4}^{3 -}$

Discussion

5.	John wanted to know about the composition of air. He asked Sam to explain it to him whether air is composed of a single component or more than one component. To reply this query Sam made the following statements: Statement I: Air is a mixture of gases, water vapour and dust particles. Statement II: Air is composed of only one gas that is nitrogen. Statement III: Air is composed of two gases, nitrogen and oxygen only. Statement IV: Air is made up of more than one components. Which of the above statement(s) are correct?
Answer» John wanted to know about the composition of air. He asked Sam to explain it to him whether air is composed of a single component or more than one component. To reply this query Sam made the following statements: Statement I: Air is a mixture of gases, water vapour and dust particles. Statement II: Air is composed of only one gas that is nitrogen. Statement III: Air is composed of two gases, nitrogen and oxygen only. Statement IV: Air is made up of more than one components. Which of the above statement(s) are correct?

5.

John wanted to know about the composition of air. He asked Sam to explain it to him whether air is composed of a single component or more than one component. To reply this query Sam made the following statements: Statement I: Air is a mixture of gases, water vapour and dust particles. Statement II: Air is composed of only one gas that is nitrogen. Statement III: Air is composed of two gases, nitrogen and oxygen only. Statement IV: Air is made up of more than one components. Which of the above statement(s) are correct?

Answer»

John wanted to know about the composition of air. He asked Sam to explain it to him whether air is composed of a single component or more than one component. To reply this query Sam made the following statements:

Statement I: Air is a mixture of gases, water vapour and dust particles.

Statement II: Air is composed of only one gas that is nitrogen.

Statement III: Air is composed of two gases, nitrogen and oxygen only.

Statement IV: Air is made up of more than one components.

Which of the above statement(s) are correct?

Discussion

6.	What are the lagging strands and what's the leading strand??
Answer» What are the lagging strands and what's the leading strand??

Discussion

7.	What do you mean by an element?
Answer» What do you mean by an element?

Discussion

8.	What do you mean by fibre? What are natural fibres? Define synthetic fibres.
Answer» What do you mean by fibre? What are natural fibres? Define synthetic fibres.

Discussion

9.	"If you want a luxurious [A] / luxuriant [B]growth of hair, try the [A] / a [B]new shampoo.” The lama [A] / llama [B]taught us simple luring and high thinking.He said he was loath [A] / loathe [B]to criticize his guru as he was deeply obliged to him.Release from of internment [A] / interment [B] meant the beginning of a new life.
Answer» "If you want a luxurious [A] / luxuriant [B]growth of hair, try the [A] / a [B]new shampoo.” The lama [A] / llama [B]taught us simple luring and high thinking.He said he was loath [A] / loathe [B]to criticize his guru as he was deeply obliged to him.Release from of internment [A] / interment [B] meant the beginning of a new life.

Discussion

10.	A saturated solution of sugar in water is prepared. The temperature of water is lowered by 5 °C. Will the solution continue to be saturated? Give reasons.
Answer» A saturated solution of sugar in water is prepared. The temperature of water is lowered by 5 °C. Will the solution continue to be saturated? Give reasons.

Discussion

11.	It is said that crystalline solids are regular in shape but the crystals are irregular in shape??
Answer» It is said that crystalline solids are regular in shape but the crystals are irregular in shape??

Discussion

12.	Difference in size of particles is used to separate a mixture into its constituent components, by the process of:
Answer» Difference in size of particles is used to separate a mixture into its constituent components, by the process of:

Discussion

13.	Question 1 (d)Which separation techniques will you apply for the separation of the following? d. Different pigments from an extract of flower petals.
Answer» Question 1 (d) Which separation techniques will you apply for the separation of the following? d. Different pigments from an extract of flower petals.

Discussion

14.	We observe that some portion of wax (in candle) melts and other portion of it is used in producing heat and light. Statement A: The melting of wax is a physical change Statement B: The burning of wax for the production of heat and light is a chemical change. State which of the statement(s) is/are true.
Answer» We observe that some portion of wax (in candle) melts and other portion of it is used in producing heat and light. Statement A: The melting of wax is a physical change Statement B: The burning of wax for the production of heat and light is a chemical change. State which of the statement(s) is/are true.

Discussion

15.	The given formula amount of water (ml)time(min.) is used to calculate which of the following processes?
Answer» The given formula $\frac{amount of water (ml)}{time(min.)}$ is used to calculate which of the following processes?

Discussion

16.	During the process of evaporation, matter changes its state from
Answer» During the process of evaporation, matter changes its state from

Discussion

17.	a sphere is floting in water its 1/3rd part is outside the water and when sphere is flloating in unknown liquid , its 3/4th part is outside the liquid then density of liquid is?
Answer» a sphere is floting in water its 1/3rd part is outside the water and when sphere is flloating in unknown liquid , its 3/4th part is outside the liquid then density of liquid is?

Discussion

18.	Equal volumes of oil and water are taken in two glasses and weighed. What is the likely outcome?
Answer» Equal volumes of oil and water are taken in two glasses and weighed. What is the likely outcome?

Discussion

19.	The method that is used to obtain pure salt from impure salt-
Answer» The method that is used to obtain pure salt from impure salt-

Discussion

20.	Why are sweaters/ woolen clothes are made up of wool
Answer» Why are sweaters/ woolen clothes are made up of wool

Discussion

21.	To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Answer» To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Discussion

22.	Question 4 (iv) State whether the statement given below is True or False. A piece of wood floats on water
Answer» Question 4 (iv) State whether the statement given below is True or False. A piece of wood floats on water

22.

Question 4 (iv) State whether the statement given below is True or False. A piece of wood floats on water

Answer»

Question 4 (iv)

State whether the statement given below is True or False.

A piece of wood floats on water

Discussion

23.	Difference between combustion and flame?
Answer» Difference between combustion and flame?

Discussion

24.	What is conductivity! What is difference between conductivity and resistivity?
Answer» What is conductivity! What is difference between conductivity and resistivity?

Discussion

25.	What is the smallest particle of an element called?
Answer» What is the smallest particle of an element called?

Discussion

26.	Without the atmosphere, the earth would have been very hot during the day and very cold at night. Do you agree? Give reasons.
Answer» Without the atmosphere, the earth would have been very hot during the day and very cold at night. Do you agree? Give reasons.

Discussion

27.	Which of these is/are true regarding atmosphere?
Answer» Which of these is/are true regarding atmosphere?

Discussion

28.	Why does a bicycle fall off when it's standing but it doesn't fall when it's running
Answer» Why does a bicycle fall off when it's standing but it doesn't fall when it's running

Discussion

29.	Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute
Answer» Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute

Discussion

30.	Question 39Two green plants are kept separately in oxygen-free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons
Answer» Question 39 Two green plants are kept separately in oxygen-free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons

Discussion

31.	76 which of the following have max difference in boiling point? 1. N and P 2.P and As 3. As and Sb 4. all have same
Answer» 76 which of the following have max difference in boiling point? 1. N and P 2.P and As 3. As and Sb 4. all have same

Discussion

32.	A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because
Answer» A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

32.

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Answer»

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Discussion

33.	Which one of the following substances is not a solution? A) Air B) Sugar + water mixture C) Bronze D) Water vapor E) Wine
Answer» Which one of the following substances is not a solution? A) Air B) Sugar + water mixture C) Bronze D) Water vapor E) Wine

Discussion

34.	Number of lone pair in ICl−2
Answer» Number of lone pair in $I {C l}_{2}^{-}$

Discussion

35.	The amount of water vapor present in the air is known as _________.
Answer» The amount of water vapor present in the air is known as _________.

Discussion

36.	Are living things matter?
Answer» Are living things matter?

Discussion

37.	What are the processes involved in the formation of rain?
Answer» What are the processes involved in the formation of rain?

Discussion

38.	Two liquids a and b form non-ideal solution which shows a minimum boiling point.can the two liquids be completely separated by fractional distillation?what will be the change in temperature on mixing a and b?
Answer» Two liquids a and b form non-ideal solution which shows a minimum boiling point.can the two liquids be completely separated by fractional distillation?what will be the change in temperature on mixing a and b?

Discussion

39.	Mention 3 things which you can do to conserve water.
Answer» Mention 3 things which you can do to conserve water.

Discussion

40.	There are other sources of wool except for sheep. Comment.
Answer» There are other sources of wool except for sheep. Comment.

Discussion

41.	The chemical formula of Plaster of Paris is:
Answer» The chemical formula of Plaster of Paris is:

Discussion

42.	The wheat grains are separated from the husk by the process of:
Answer» The wheat grains are separated from the husk by the process of:

Discussion

43.	Assume a gas is stored in a container at room temperature. Identify the physical properties that are affected by the motion of the particles of the gas inside the container.
Answer» Assume a gas is stored in a container at room temperature. Identify the physical properties that are affected by the motion of the particles of the gas inside the container.

Discussion

44.	The transition of a substance directly from the solid to the gaseous phase without passing through the intermediate liquid phase is known as _____________.
Answer» The transition of a substance directly from the solid to the gaseous phase without passing through the intermediate liquid phase is known as _____________.

Discussion

45.	Aarushi is trying to recreate the atmosphere in her laboratory. But, she finds that the labels are missing from the containers. She knows that nitrogen, oxygen and carbon dioxide are stored in separate containers and one bottle contains a mixture of other gases, dust particles and water vapour. The containers are shown below - Look at the containers and based on the concepts about constituents of air, help Aarushi to put the labels back on the containers.
Answer» Aarushi is trying to recreate the atmosphere in her laboratory. But, she finds that the labels are missing from the containers. She knows that nitrogen, oxygen and carbon dioxide are stored in separate containers and one bottle contains a mixture of other gases, dust particles and water vapour. The containers are shown below - Look at the containers and based on the concepts about constituents of air, help Aarushi to put the labels back on the containers.

45.

Aarushi is trying to recreate the atmosphere in her laboratory. But, she finds that the labels are missing from the containers. She knows that nitrogen, oxygen and carbon dioxide are stored in separate containers and one bottle contains a mixture of other gases, dust particles and water vapour. The containers are shown below - Look at the containers and based on the concepts about constituents of air, help Aarushi to put the labels back on the containers.

Answer»

Aarushi is trying to recreate the atmosphere in her laboratory. But, she finds that the labels are missing from the containers. She knows that nitrogen, oxygen and carbon dioxide are stored in separate containers and one bottle contains a mixture of other gases, dust particles and water vapour. The containers are shown below -

Look at the containers and based on the concepts about constituents of air, help Aarushi to put the labels back on the containers.

Discussion

46.	Question 21 Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?
Answer» Question 21 Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?

46.

Question 21 Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?

Answer»

Question 21

Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?

Discussion

47.	Q. what will be amount of heat evolved by burning10L of methane under s†an dard conditions ? given heat formation of metyhane, carbon dioxide, water, are -76.2, -398.8,& -241.6 KJ mol^{-1}?
Answer» Q. what will be amount of heat evolved by burning10L of methane under s†an dard conditions ? given heat formation of metyhane, carbon dioxide, water, are -76.2, -398.8,& -241.6 KJ mol^{-1}?

Discussion

48.	Classify the given materials based on the property of lustre.Iron rod, gold coin, charcoal, wooden scale, copper wire, silver bar, sulphur powder, phosphorous powder, aluminium container.
Answer» Classify the given materials based on the property of lustre. Iron rod, gold coin, charcoal, wooden scale, copper wire, silver bar, sulphur powder, phosphorous powder, aluminium container.

Discussion

49.	Although rayon is obtained from a natural source, wood pulp, yet it is a man-made fibre. Why?
Answer» Although rayon is obtained from a natural source, wood pulp, yet it is a man-made fibre. Why?

Discussion

50.	Describe the process of chlorination.
Answer» Describe the process of chlorination.

Discussion

Explore topic-wise InterviewSolutions in .

I am unable to understand the following topics:- 1)spinning 2)weaving 3)ginning From the the videos so please help me to understand the above given topics

BH3 exists in dimer form but then also its octet is not complete then what is the advantage of dimer form?

Why doesn't a solid in liquid type solution (eg. brine) solidify on saturation, since all the inter-molecular spaces of the liquid are occupied by the solid particles?

Question 13Write the molecular formulae of all the compounds that can be formed by the combination of following ionsCu2+,Na+,Fe3+,Cl−,SO24,PO3−4

What are the lagging strands and what's the leading strand??

What do you mean by an element?

What do you mean by fibre? What are natural fibres? Define synthetic fibres.

A saturated solution of sugar in water is prepared. The temperature of water is lowered by 5 °C. Will the solution continue to be saturated? Give reasons.

It is said that crystalline solids are regular in shape but the crystals are irregular in shape??

Difference in size of particles is used to separate a mixture into its constituent components, by the process of:

Question 1 (d)Which separation techniques will you apply for the separation of the following? d. Different pigments from an extract of flower petals.

The given formula amount of water (ml)time(min.) is used to calculate which of the following processes?

During the process of evaporation, matter changes its state from

a sphere is floting in water its 1/3rd part is outside the water and when sphere is flloating in unknown liquid , its 3/4th part is outside the liquid then density of liquid is?

Equal volumes of oil and water are taken in two glasses and weighed. What is the likely outcome?

The method that is used to obtain pure salt from impure salt-

Why are sweaters/ woolen clothes are made up of wool

To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Question 4 (iv) State whether the statement given below is True or False. A piece of wood floats on water

Difference between combustion and flame?

What is conductivity! What is difference between conductivity and resistivity?

What is the smallest particle of an element called?

Without the atmosphere, the earth would have been very hot during the day and very cold at night. Do you agree? Give reasons.

Which of these is/are true regarding atmosphere?

Why does a bicycle fall off when it's standing but it doesn't fall when it's running

Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute

Question 39Two green plants are kept separately in oxygen-free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons

76 which of the following have max difference in boiling point? 1. N and P 2.P and As 3. As and Sb 4. all have same

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Which one of the following substances is not a solution? A) Air B) Sugar + water mixture C) Bronze D) Water vapor E) Wine

Number of lone pair in ICl−2

The amount of water vapor present in the air is known as _________.

Are living things matter?

What are the processes involved in the formation of rain?

Two liquids a and b form non-ideal solution which shows a minimum boiling point.can the two liquids be completely separated by fractional distillation?what will be the change in temperature on mixing a and b?

Mention 3 things which you can do to conserve water.

There are other sources of wool except for sheep. Comment.

The chemical formula of Plaster of Paris is:

The wheat grains are separated from the husk by the process of:

Assume a gas is stored in a container at room temperature. Identify the physical properties that are affected by the motion of the particles of the gas inside the container.

The transition of a substance directly from the solid to the gaseous phase without passing through the intermediate liquid phase is known as _____________.

Question 21 Dissolve two spoons of common salt in half a cup of water. Now, if you want to get the salt back, what will you do?

Q. what will be amount of heat evolved by burning10L of methane under s†an dard conditions ? given heat formation of metyhane, carbon dioxide, water, are -76.2, -398.8,& -241.6 KJ mol^{-1}?

Classify the given materials based on the property of lustre.Iron rod, gold coin, charcoal, wooden scale, copper wire, silver bar, sulphur powder, phosphorous powder, aluminium container.

Although rayon is obtained from a natural source, wood pulp, yet it is a man-made fibre. Why?

Describe the process of chlorination.