5083 + Interview Questions in Chemistry Page 95 InterviewSolution

4701.	The element that shows anomalous behaviour in group 13
Answer» The element that shows anomalous behaviour in group 13

Discussion

4702.	Degree of dissociation α =
Answer» Degree of dissociation $α$ =

Discussion

4703.	Which of the following gases are used as fire extinguisher?
Answer» Which of the following gases are used as fire extinguisher?

Discussion

4704.	Which soil is also known as regur?
Answer» Which soil is also known as regur?

Discussion

4705.	Question 6 (iv) Mark ‘T’ if the statement is true and ‘F’ if it is false: (iv) Indicator is a substance which shows different colours in acidic and basic solutions.
Answer» Question 6 (iv) Mark ‘T’ if the statement is true and ‘F’ if it is false: (iv) Indicator is a substance which shows different colours in acidic and basic solutions.

Discussion

4706.	How do rocks break?
Answer» How do rocks break?

Discussion

4707.	Matter is made up of extremely small particles called ___.
Answer» Matter is made up of extremely small particles called ___.

Discussion

4708.	Mass of an electron = ______× Relative mass of Hydrogen
Answer» Mass of an electron = ______ $\times$ Relative mass of Hydrogen

Discussion

4709.	A true species consists of a population
Answer» A true species consists of a population

Discussion

4710.	Ammonium hydroxide is mainly used in the manufacturing of _________.
Answer» Ammonium hydroxide is mainly used in the manufacturing of _________.

Discussion

4711.	What does fundamental mean?
Answer» What does fundamental mean?

Discussion

4712.	A molecule is the smallest unit of : A.element B.compound C.both of these D.none of these
Answer» A molecule is the smallest unit of : A.element B.compound C.both of these D.none of these

4712.

A molecule is the smallest unit of : A.element B.compound C.both of these D.none of these

Answer»

A molecule is the smallest unit of :

A.element

B.compound

C.both of these

D.none of these

Discussion

4713.	Air is not present in
Answer» Air is not present in

Discussion

4714.	Question 13 How are open drains harmful for human health?
Answer» Question 13 How are open drains harmful for human health?

4714.

Question 13 How are open drains harmful for human health?

Answer»

Question 13

How are open drains harmful for human health?

Discussion

4715.	What is the effect of sodium chloride on litmus paper?
Answer» What is the effect of sodium chloride on litmus paper?

Discussion

4716.	The reaction of an acid with a base is: (select all the suitable answers)
Answer» The reaction of an acid with a base is: (select all the suitable answers)

Discussion

4717.	is the catalyst used in the reaction 2H2O2→2H2O+O2
Answer» is the catalyst used in the reaction $2 H_{2} O_{2} \to 2 H_{2} O + O_{2}$

Discussion

4718.	Which of the following activities causes air pollution?
Answer» Which of the following activities causes air pollution?

Discussion

4719.	Question 19 Give two examples for each of the following cases: (a) Physical changes which are reversible. (b) Physical changes which are not reversible. (c) Chemical changes
Answer» Question 19 Give two examples for each of the following cases: (a) Physical changes which are reversible. (b) Physical changes which are not reversible. (c) Chemical changes

4719.

Question 19 Give two examples for each of the following cases: (a) Physical changes which are reversible. (b) Physical changes which are not reversible. (c) Chemical changes

Answer»

Question 19

Give two examples for each of the following cases:
(a) Physical changes which are reversible.
(b) Physical changes which are not reversible.
(c) Chemical changes

Discussion

4720.	Identify the compound which is a Bronsted Lowry base but not an Arrhenius base?
Answer» Identify the compound which is a Bronsted Lowry base but not an Arrhenius base?

Discussion

4721.	Why was a gold foil preferred over lithium foil by Rutherford in his experiment?
Answer» Why was a gold foil preferred over lithium foil by Rutherford in his experiment?

Discussion

4722.	An astronaut gets thirsty on the moon. So, he prepares water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water on moon will be same as that on the earth?
Answer» An astronaut gets thirsty on the moon. So, he prepares water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water on moon will be same as that on the earth?

Discussion

4723.	Which of the following represents a decomposition reaction?
Answer» Which of the following represents a decomposition reaction?

Discussion

4724.	Give one experiment to show that soil contains moisture .
Answer» Give one experiment to show that soil contains moisture .

Discussion

4725.	A student is heating some substance and noted an observation. When solid iodine is heated, a violet vapour is seen. Name the process taking place in this case.
Answer» A student is heating some substance and noted an observation. When solid iodine is heated, a violet vapour is seen. Name the process taking place in this case.

Discussion

4726.	Identify the subordinating conjunction in the sentence. Switch off the stove when the water starts boiling.
Answer» Identify the subordinating conjunction in the sentence. Switch off the stove when the water starts boiling.

4726.

Identify the subordinating conjunction in the sentence. Switch off the stove when the water starts boiling.

Answer»

Identify the subordinating conjunction in the sentence.

Switch off the stove when the water starts boiling.

Discussion

4727.	Which of the following substances will turn China rose indicator to green colour?
Answer» Which of the following substances will turn China rose indicator to green colour?

Discussion

4728.	Which of the following is the correct way for the process of dilution of acids?
Answer» Which of the following is the correct way for the process of dilution of acids?

Discussion

4729.	If a drop of vinegar is added to China rose indicator, what will be the change in colour of the indicator?
Answer» If a drop of vinegar is added to China rose indicator, what will be the change in colour of the indicator?

Discussion

4730.	Is baking soda a base or a salt? Give reason.
Answer» Is baking soda a base or a salt? Give reason.

Discussion

4731.	Explain the following: [2 MARKS] a. Regenerated fibres b. Reeling the silk
Answer» Explain the following: [2 MARKS] a. Regenerated fibres b. Reeling the silk

4731.

Explain the following: [2 MARKS] a. Regenerated fibres b. Reeling the silk

Answer»

Explain the following: [2 MARKS]

a. Regenerated fibres

b. Reeling the silk

Discussion

4732.	Question 13 State whether the following statements are true or false. Correct the false statements. (a) All substances are either acidic or basic. (b) A compound if acidic will turn all indicators red (c) Lime water turns red litmus blue (d) Common salt dissolved in water turns blue litmus red (e) Phenolphthalein is a natural indicator (f) Calamine can be used to treat ant’s sting (g) Lemon water is basic in nature
Answer» Question 13 State whether the following statements are true or false. Correct the false statements. (a) All substances are either acidic or basic. (b) A compound if acidic will turn all indicators red (c) Lime water turns red litmus blue (d) Common salt dissolved in water turns blue litmus red (e) Phenolphthalein is a natural indicator (f) Calamine can be used to treat ant’s sting (g) Lemon water is basic in nature

4732.

Question 13 State whether the following statements are true or false. Correct the false statements. (a) All substances are either acidic or basic. (b) A compound if acidic will turn all indicators red (c) Lime water turns red litmus blue (d) Common salt dissolved in water turns blue litmus red (e) Phenolphthalein is a natural indicator (f) Calamine can be used to treat ant’s sting (g) Lemon water is basic in nature

Answer»

Question 13

State whether the following statements are true or false. Correct the false statements.
(a) All substances are either acidic or basic.
(b) A compound if acidic will turn all indicators red
(c) Lime water turns red litmus blue
(d) Common salt dissolved in water turns blue litmus red
(e) Phenolphthalein is a natural indicator
(f) Calamine can be used to treat ant’s sting
(g) Lemon water is basic in nature

Discussion

4733.	Can the number of Tetrahedral voids = 2(the number of octahedral voids) or not.
Answer» Can the number of Tetrahedral voids = 2(the number of octahedral voids) or not.

Discussion

4734.	When silver coins are added to copper sulphate what happens
Answer» When silver coins are added to copper sulphate what happens

Discussion

4735.	__ breeding is a process of selecting the parents for obtaining special characters in the offspring.
Answer» __ breeding is a process of selecting the parents for obtaining special characters in the offspring.

Discussion

4736.	What is the method used to separate a mixture of insoluble solids. Based on differences in density?
Answer» What is the method used to separate a mixture of insoluble solids. Based on differences in density?

Discussion

4737.	There is a large variety of silk moths which look very different from one another and the silk yarn they yield is different in texture.The silk yarn is obtained from the __ of the silk moth.
Answer» There is a large variety of silk moths which look very different from one another and the silk yarn they yield is different in texture.The silk yarn is obtained from the __ of the silk moth.

Discussion

4738.	Tom and Jerry are participating in a competition. Whoever uses less water wins. The activities of both of them are given below. Analyse their activities and tell who will win the competition. [5 MARKS] TomJerryHe loves to take bath in the swimming pool and takes bath daily.He takes bath only on Sundays and in his bathroom.Tom waters the garden using sprinklers.Jerry uses drip irrigation to water the garden.Tom loves to play in the rain but doesn't collect rainwater.Jerry collects rainwater in an overhead tank.Recently Tom built a new room on his side of the house where he hangs out with his friends.Jerry lives peacefully all alone on his side.
Answer» Tom and Jerry are participating in a competition. Whoever uses less water wins. The activities of both of them are given below. Analyse their activities and tell who will win the competition. [5 MARKS] $\begin{matrix} Tom & Jerry He loves to take bath in the swimming pool and takes bath daily. & He takes bath only on Sundays and in his bathroom. Tom waters the garden using sprinklers. & Jerry uses drip irrigation to water the garden. Tom loves to play in the rain but doesn't collect rainwater. & Jerry collects rainwater in an overhead tank. Recently Tom built a new room on his side of the house where he hangs out with his friends. & Jerry lives peacefully all alone on his side. \end{matrix}$

Discussion

4739.	Question 3(a) Fill in the blanks in the following statements: When carbon dioxide is passed through lime water, it turns milky due to the formation of ___.
Answer» Question 3(a) Fill in the blanks in the following statements: When carbon dioxide is passed through lime water, it turns milky due to the formation of ___.

Discussion

4740.	Difference between silk moth and cocoon.
Answer» Difference between silk moth and cocoon.

Discussion

4741.	The process in which gas molecules intermingle as a result of random motion is known as ___________.
Answer» The process in which gas molecules intermingle as a result of random motion is known as ___________.

Discussion

4742.	Coating of zinc is provided in order to reduce the risk of corrosion. Which method is this?
Answer» Coating of zinc is provided in order to reduce the risk of corrosion. Which method is this?

Discussion

4743.	Which of these is a part of wastewater treatment plant?
Answer» Which of these is a part of wastewater treatment plant?

Discussion

4744.	A solution is a homogeneous mixture of two or more substances. Which of the following solutions are possible?
Answer» A solution is a homogeneous mixture of two or more substances. Which of the following solutions are possible?

Discussion

4745.	The decomposers in an ecosystem______
Answer» The decomposers in an ecosystem______

Discussion

4746.	When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is not true about this reaction?
Answer» When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is not true about this reaction?

Discussion

4747.	A compound which is insoluble in cold water but soluble in a solution of excess ammonia.
Answer» A compound which is insoluble in cold water but soluble in a solution of excess ammonia.

Discussion

4748.	A drop of hydrochloric acid can burn many layers of skin immediately; why is it then secreted in the stomach?
Answer» A drop of hydrochloric acid can burn many layers of skin immediately; why is it then secreted in the stomach?

Discussion

4749.	Which of these reactions involve two or more reactants combining to form a single product?
Answer» Which of these reactions involve two or more reactants combining to form a single product?

Discussion

4750.	Question 22 Boojho made the circuit shown in the figure. He wanted to observe what happens when an electric current is passed through water. But he forgot to add a few drops of lemon juice to water. Will it make any difference to his observations? Explain.
Answer» Question 22 Boojho made the circuit shown in the figure. He wanted to observe what happens when an electric current is passed through water. But he forgot to add a few drops of lemon juice to water. Will it make any difference to his observations? Explain.

Discussion

Explore topic-wise InterviewSolutions in .

The element that shows anomalous behaviour in group 13

Degree of dissociation α =

Which of the following gases are used as fire extinguisher?

Which soil is also known as regur?

Question 6 (iv) Mark ‘T’ if the statement is true and ‘F’ if it is false: (iv) Indicator is a substance which shows different colours in acidic and basic solutions.

How do rocks break?

Matter is made up of extremely small particles called ___.

Mass of an electron = ______× Relative mass of Hydrogen

A true species consists of a population

Ammonium hydroxide is mainly used in the manufacturing of _________.

What does fundamental mean?

A molecule is the smallest unit of : A.element B.compound C.both of these D.none of these

Air is not present in

Question 13 How are open drains harmful for human health?

What is the effect of sodium chloride on litmus paper?

The reaction of an acid with a base is: (select all the suitable answers)

is the catalyst used in the reaction 2H2O2→2H2O+O2

Which of the following activities causes air pollution?

Question 19 Give two examples for each of the following cases: (a) Physical changes which are reversible. (b) Physical changes which are not reversible. (c) Chemical changes

Identify the compound which is a Bronsted Lowry base but not an Arrhenius base?

Why was a gold foil preferred over lithium foil by Rutherford in his experiment?

An astronaut gets thirsty on the moon. So, he prepares water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water on moon will be same as that on the earth?

Which of the following represents a decomposition reaction?

Give one experiment to show that soil contains moisture .

A student is heating some substance and noted an observation. When solid iodine is heated, a violet vapour is seen. Name the process taking place in this case.

Identify the subordinating conjunction in the sentence. Switch off the stove when the water starts boiling.

Which of the following substances will turn China rose indicator to green colour?

Which of the following is the correct way for the process of dilution of acids?

If a drop of vinegar is added to China rose indicator, what will be the change in colour of the indicator?

Is baking soda a base or a salt? Give reason.

Explain the following: [2 MARKS] a. Regenerated fibres b. Reeling the silk

Can the number of Tetrahedral voids = 2(the number of octahedral voids) or not.

When silver coins are added to copper sulphate what happens

__ breeding is a process of selecting the parents for obtaining special characters in the offspring.

What is the method used to separate a mixture of insoluble solids. Based on differences in density?

There is a large variety of silk moths which look very different from one another and the silk yarn they yield is different in texture.The silk yarn is obtained from the __ of the silk moth.

Question 3(a) Fill in the blanks in the following statements: When carbon dioxide is passed through lime water, it turns milky due to the formation of ___.

Difference between silk moth and cocoon.

The process in which gas molecules intermingle as a result of random motion is known as ___________.

Coating of zinc is provided in order to reduce the risk of corrosion. Which method is this?

Which of these is a part of wastewater treatment plant?

A solution is a homogeneous mixture of two or more substances. Which of the following solutions are possible?

The decomposers in an ecosystem______

When iron nails are added to an aqueous solution of copper sulphate, a chemical change occurs. Which of the following is not true about this reaction?

A compound which is insoluble in cold water but soluble in a solution of excess ammonia.

A drop of hydrochloric acid can burn many layers of skin immediately; why is it then secreted in the stomach?

Which of these reactions involve two or more reactants combining to form a single product?

Question 22 Boojho made the circuit shown in the figure. He wanted to observe what happens when an electric current is passed through water. But he forgot to add a few drops of lemon juice to water. Will it make any difference to his observations? Explain.