5083 + Interview Questions in Chemistry Page 94 InterviewSolution

4651.	What is a neutralisation reaction ?
Answer» What is a neutralisation reaction ?

Discussion

4652.	What is the chemical formula of natrolite?
Answer» What is the chemical formula of natrolite?

Discussion

4653.	When a toilet cleaner is acidic then why do they it burn things when we use it for cleaning sanitary wares
Answer» When a toilet cleaner is acidic then why do they it burn things when we use it for cleaning sanitary wares

Discussion

4654.	Ammonium chloride is also sublimable solid . Give a reason why sublimation of ammonium chloride involves a physical & Chemical change.
Answer» Ammonium chloride is also sublimable solid . Give a reason why sublimation of ammonium chloride involves a physical & Chemical change.

Discussion

4655.	Slaking of lime is which change
Answer» Slaking of lime is which change

Discussion

4656.	Question 4 (i) What is meant by the following terms? (i) Rearing
Answer» Question 4 (i) What is meant by the following terms? (i) Rearing

Discussion

4657.	Acidity is caused when the amount of hydrochloric acid in the stomach ________ .
Answer» Acidity is caused when the amount of hydrochloric acid in the stomach ________ .

Discussion

4658.	Question 12 (b) State whether the following statement is true or false. If false, correct it. In India, camels and goats are generally reared for obtaining wool.
Answer» Question 12 (b) State whether the following statement is true or false. If false, correct it. In India, camels and goats are generally reared for obtaining wool.

4658.

Question 12 (b) State whether the following statement is true or false. If false, correct it. In India, camels and goats are generally reared for obtaining wool.

Answer»

Question 12 (b)

State whether the following statement is true or false. If false, correct it.
In India, camels and goats are generally reared for obtaining wool.

Discussion

4659.	Question 1.2 A solution of a substance ‘X’ is used for white washing. Write the reaction of the substance ‘X’ named above with water.
Answer» Question 1.2 A solution of a substance ‘X’ is used for white washing. Write the reaction of the substance ‘X’ named above with water.

Discussion

4660.	The ionic bond is also known as ___
Answer» The ionic bond is also known as ___

Discussion

4661.	How do we test whether a substance is an acid or base? Give example of some substances that can be used for testing acids and bases. [3 MARKS]
Answer» How do we test whether a substance is an acid or base? Give example of some substances that can be used for testing acids and bases. [3 MARKS]

Discussion

4662.	Discuss how crystals of copper sulphate are prepared. [5 MARKS]
Answer» Discuss how crystals of copper sulphate are prepared. [5 MARKS]

Discussion

4663.	The chemical symbol for hydrogen atom is:
Answer» The chemical symbol for hydrogen atom is:

Discussion

4664.	Toilet cleaners use which of the following property of acids?
Answer» Toilet cleaners use which of the following property of acids?

Discussion

4665.	State True or False. The presence of ozone in its molecular form in the environment is harmful for plants and animals.
Answer» State True or False. The presence of ozone in its molecular form in the environment is harmful for plants and animals.

Discussion

4666.	Factors which are the reason behind the variation of water content in different types of soil are:
Answer» Factors which are the reason behind the variation of water content in different types of soil are:

Discussion

4667.	By which natural process is the oxygen of air renewed?
Answer» By which natural process is the oxygen of air renewed?

Discussion

4668.	Formula of a compound having its constituent as X and Y is X2Y3. If the element forms a chloride then what will be the formula of that compound?
Answer» Formula of a compound having its constituent as X and Y is $X_{2} Y_{3}$ . If the element forms a chloride then what will be the formula of that compound?

Discussion

4669.	When magnesium is burned in the air , a powdery ash X is formed. x on dissolving with water forms Y . What are Y and X
Answer» When magnesium is burned in the air , a powdery ash X is formed. x on dissolving with water forms Y . What are Y and X

Discussion

4670.	Distribution of water on earth in briefly
Answer» Distribution of water on earth in briefly

Discussion

4671.	Sludge separated from wastewater can be turned into a useful commodity. Which of the following is one such commodity?
Answer» Sludge separated from wastewater can be turned into a useful commodity. Which of the following is one such commodity?

Discussion

4672.	Why does your mother put metal ladle in the saucepan while boiling milk?
Answer» Why does your mother put metal ladle in the saucepan while boiling milk?

Discussion

4673.	Differentiate between hydrated and anhydrous salts .
Answer» Differentiate between hydrated and anhydrous salts .

Discussion

4674.	Mass of an object remains ___ throughout the universe.
Answer» Mass of an object remains ___ throughout the universe.

Discussion

4675.	Which acid is used in the metal industry?
Answer» Which acid is used in the metal industry?

Discussion

4676.	Which among the following is an example of an irreversible change?
Answer» Which among the following is an example of an irreversible change?

Discussion

4677.	The size of particles of matter is
Answer» The size of particles of matter is

Discussion

4678.	Definition of acids and bases?
Answer» Definition of acids and bases?

Discussion

4679.	The general day to day activities of a primary school going teen named Swami are mentioned below. 1. To walk through a waterlogged area, Swami shortens the length of his dress by folding it. 2. In school, he drew an apple in his slate with chalk. 3. After school, he came directly came back to his home and started playing with his new toy but accidently it broke. 4. At night, his mother cooked food for him. He ate and went to bed. Connect the above excerpts to reversible or irreversible change.
Answer» The general day to day activities of a primary school going teen named Swami are mentioned below. 1. To walk through a waterlogged area, Swami shortens the length of his dress by folding it. 2. In school, he drew an apple in his slate with chalk. 3. After school, he came directly came back to his home and started playing with his new toy but accidently it broke. 4. At night, his mother cooked food for him. He ate and went to bed. Connect the above excerpts to reversible or irreversible change.

4679.

The general day to day activities of a primary school going teen named Swami are mentioned below. 1. To walk through a waterlogged area, Swami shortens the length of his dress by folding it. 2. In school, he drew an apple in his slate with chalk. 3. After school, he came directly came back to his home and started playing with his new toy but accidently it broke. 4. At night, his mother cooked food for him. He ate and went to bed. Connect the above excerpts to reversible or irreversible change.

Answer»

The general day to day activities of a primary school going teen named Swami are mentioned below.

1. To walk through a waterlogged area, Swami shortens the length of his dress by folding it.
2. In school, he drew an apple in his slate with chalk.
3. After school, he came directly came back to his home and started playing with his new toy but accidently it broke.
4. At night, his mother cooked food for him. He ate and went to bed.

Connect the above excerpts to reversible or irreversible change.

Discussion

4680.	Which of the following is called a strategic metal?
Answer» Which of the following is called a strategic metal?

Discussion

4681.	What is the correct way for diluting an acid?
Answer» What is the correct way for diluting an acid?

Discussion

4682.	In which of these states of matter is the effect of pressure highest?
Answer» In which of these states of matter is the effect of pressure highest?

Discussion

4683.	. Explain why factory waste should be neutralized before disposing it into the water bodies? . Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
Answer» . Explain why factory waste should be neutralized before disposing it into the water bodies? . Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

4683.

. Explain why factory waste should be neutralized before disposing it into the water bodies? . Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

Answer»

. Explain why factory waste should be neutralized before disposing it into the water bodies?

. Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

Discussion

4684.	Question 5 A man painted his main gate made up of iron, to (i) prevent it from rusting. (ii) protect it from the sun. (iii) make it look beautiful. (iv) make it dust free. Which of the above statement(s) is/are correct? (a) (i) and (ii) (b) (ii) and (iii) (c) only (ii) (d) (i) and (iii)
Answer» Question 5 A man painted his main gate made up of iron, to (i) prevent it from rusting. (ii) protect it from the sun. (iii) make it look beautiful. (iv) make it dust free. Which of the above statement(s) is/are correct? (a) (i) and (ii) (b) (ii) and (iii) (c) only (ii) (d) (i) and (iii)

4684.

Question 5 A man painted his main gate made up of iron, to (i) prevent it from rusting. (ii) protect it from the sun. (iii) make it look beautiful. (iv) make it dust free. Which of the above statement(s) is/are correct? (a) (i) and (ii) (b) (ii) and (iii) (c) only (ii) (d) (i) and (iii)

Answer»

Question 5

A man painted his main gate made up of iron, to

(i) prevent it from rusting.
(ii) protect it from the sun.
(iii) make it look beautiful.
(iv) make it dust free.

Which of the above statement(s) is/are correct?
(a) (i) and (ii)
(b) (ii) and (iii)
(c) only (ii)
(d) (i) and (iii)

Discussion

4685.	Which of the following is a part of inorganic impurity in sewage?
Answer» Which of the following is a part of inorganic impurity in sewage?

Discussion

4686.	In a first order reaction, the concentration of the reactant decreases from 800 mol dm−3 in 2×104s. The rate constant of the reaction in (s−1) is (IIT-JEE, 2003)
Answer» In a first order reaction, the concentration of the reactant decreases from 800 mol $d m^{- 3} i n 2 \times 10^{4} s .$ The rate constant of the reaction $i n (s^{- 1})$ is (IIT-JEE, 2003)

4686.

In a first order reaction, the concentration of the reactant decreases from 800 mol dm−3 in 2×104s. The rate constant of the reaction in (s−1) is (IIT-JEE, 2003)

Answer»

In a first order reaction, the concentration of the reactant decreases from 800 mol $d m^{- 3} i n 2 \times 10^{4} s .$ The rate constant of the reaction $i n (s^{- 1})$ is

(IIT-JEE, 2003)

Discussion

4687.	What will happen if sewage is not treated?
Answer» What will happen if sewage is not treated?

Discussion

4688.	Which among the following is a water borne disease?
Answer» Which among the following is a water borne disease?

Discussion

4689.	The area of a rectangle is x2 + 9x +14 What are the dimensions if x=2 ?
Answer» The area of a rectangle is x² + 9x +14 What are the dimensions if x=2 ?

Discussion

4690.	Question 11 (d) Fill in the blanks in the following statements. (d) Hair trap a lot of ___ which is a poor ___ of heat.
Answer» Question 11 (d) Fill in the blanks in the following statements. (d) Hair trap a lot of ___ which is a poor ___ of heat.

4690.

Question 11 (d) Fill in the blanks in the following statements. (d) Hair trap a lot of _ which is a poor _ of heat.

Answer»

Question 11 (d)

Fill in the blanks in the following statements.
(d) Hair trap a lot of ___ which is a poor ___ of heat.

Discussion

4691.	What is the kind of bond that is formed when ‘sharing of electrons’ take place between two or more atoms?
Answer» What is the kind of bond that is formed when ‘sharing of electrons’ take place between two or more atoms?

Discussion

4692.	Which one of the following mixtures can be completely separated into pure components by fractional distillation?
Answer» Which one of the following mixtures can be completely separated into pure components by fractional distillation?

Discussion

4693.	Can molecule change? Give reason to your answer?
Answer» Can molecule change? Give reason to your answer?

Discussion

4694.	Chemical changes
Answer» Chemical changes

Discussion

4695.	Define word equation for chemical reaction by giving an example.
Answer» Define word equation for chemical reaction by giving an example.

Discussion

4696.	Explain Centrifugation? Why is this method adopted when measuring physical change? [3 MARKS]
Answer» Explain Centrifugation? Why is this method adopted when measuring physical change? [3 MARKS]

Discussion

4697.	Anoxygenic phototrophic bacteria do not utilize:
Answer» Anoxygenic phototrophic bacteria do not utilize:

Discussion

4698.	How many valence electrons does Boron have?
Answer» How many valence electrons does Boron have?

Discussion

4699.	The number of electrons in a Lewis dot structure of each bonded atom should always sum up to:
Answer» The number of electrons in a Lewis dot structure of each bonded atom should always sum up to:

Discussion

4700.	The Outer Core of Earth is in a liquid state. How has this facilitated the origin of life on earth?
Answer» The Outer Core of Earth is in a liquid state. How has this facilitated the origin of life on earth?

Discussion

Explore topic-wise InterviewSolutions in .

What is a neutralisation reaction ?

What is the chemical formula of natrolite?

When a toilet cleaner is acidic then why do they it burn things when we use it for cleaning sanitary wares

Ammonium chloride is also sublimable solid . Give a reason why sublimation of ammonium chloride involves a physical &amp; Chemical change.

Slaking of lime is which change

Question 4 (i) What is meant by the following terms? (i) Rearing

Acidity is caused when the amount of hydrochloric acid in the stomach ________ .

Question 12 (b) State whether the following statement is true or false. If false, correct it. In India, camels and goats are generally reared for obtaining wool.

Question 1.2 A solution of a substance ‘X’ is used for white washing. Write the reaction of the substance ‘X’ named above with water.

The ionic bond is also known as ___

How do we test whether a substance is an acid or base? Give example of some substances that can be used for testing acids and bases. [3 MARKS]

Discuss how crystals of copper sulphate are prepared. [5 MARKS]

The chemical symbol for hydrogen atom is:

Toilet cleaners use which of the following property of acids?

State True or False. The presence of ozone in its molecular form in the environment is harmful for plants and animals.

Factors which are the reason behind the variation of water content in different types of soil are:

By which natural process is the oxygen of air renewed?

Formula of a compound having its constituent as X and Y is X2Y3. If the element forms a chloride then what will be the formula of that compound?

When magnesium is burned in the air , a powdery ash X is formed. x on dissolving with water forms Y . What are Y and X

Distribution of water on earth in briefly

Sludge separated from wastewater can be turned into a useful commodity. Which of the following is one such commodity?

Why does your mother put metal ladle in the saucepan while boiling milk?

Differentiate between hydrated and anhydrous salts .

Mass of an object remains ___ throughout the universe.

Which acid is used in the metal industry?

Which among the following is an example of an irreversible change?

The size of particles of matter is

Definition of acids and bases?

Which of the following is called a strategic metal?

What is the correct way for diluting an acid?

In which of these states of matter is the effect of pressure highest?

. Explain why factory waste should be neutralized before disposing it into the water bodies? . Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

Question 5 A man painted his main gate made up of iron, to (i) prevent it from rusting. (ii) protect it from the sun. (iii) make it look beautiful. (iv) make it dust free. Which of the above statement(s) is/are correct? (a) (i) and (ii) (b) (ii) and (iii) (c) only (ii) (d) (i) and (iii)

Which of the following is a part of inorganic impurity in sewage?

In a first order reaction, the concentration of the reactant decreases from 800 mol dm−3 in 2×104s. The rate constant of the reaction in (s−1) is (IIT-JEE, 2003)

What will happen if sewage is not treated?

Which among the following is a water borne disease?

The area of a rectangle is x2 + 9x +14 What are the dimensions if x=2 ?

Question 11 (d) Fill in the blanks in the following statements. (d) Hair trap a lot of ___ which is a poor ___ of heat.

What is the kind of bond that is formed when ‘sharing of electrons’ take place between two or more atoms?

Which one of the following mixtures can be completely separated into pure components by fractional distillation?

Can molecule change? Give reason to your answer?

Chemical changes

Define word equation for chemical reaction by giving an example.

Explain Centrifugation? Why is this method adopted when measuring physical change? [3 MARKS]

Anoxygenic phototrophic bacteria do not utilize:

How many valence electrons does Boron have?

The number of electrons in a Lewis dot structure of each bonded atom should always sum up to:

The Outer Core of Earth is in a liquid state. How has this facilitated the origin of life on earth?

Ammonium chloride is also sublimable solid . Give a reason why sublimation of ammonium chloride involves a physical & Chemical change.

Question 11 (d) Fill in the blanks in the following statements. (d) Hair trap a lot of _ which is a poor _ of heat.