Question

Write Ture or False :-

1. Nitric acid is used in textile industry

2. Bases turns red litmus blue.

3. Acid neutralize bases.

4. Water is neutral to indicator.

5. Calcium hydroxide is also known as caustic soda.

_______________________________

Multiple Choice Questions :-

In the attachment

______________________________

Note :-

1. Quality Answers Needed.
2. Spammers will be reported.​

Answer 1

Explanation:

Write Ture or False :-

1. Nitric acid is used in textile industry

2. Bases turns red litmus blue.

3. Acid neutralize bases.

4. Water is neutral to indicator.

5. Calcium hydroxide is also known as caustic soda.

_______________________________

Multiple Choice Questions :-

In the attachment

______________________________

Note :-

Write Ture or False :-

1. Nitric acid is used in textile industry

2. Bases turns red litmus blue.

3. Acid neutralize bases.

4. Water is neutral to indicator.

5. Calcium hydroxide is also known as caustic soda.

_______________________________

Multiple Choice Questions :-

In the attachment

______________________________

Note :-

1. Quality Answers Needed.

2. Spammers will be reported.

1. Quality Answers Needed.

2. Spammers will be reported.

Answer 2

Tick (✓) only the correct choice amongst the following :

(Q1) Salt is formed when

(a) Metals react with Oxygen

(b) Metals react with water

(c) Metals react with Acid ✓

(d) None of these.

• Reason : Salt is formed when metals react with Acid. As a result, Salt present in metal and Hydrogen Gas is formed.

(Q2) HNO is a/an

(a) Salt

(b) Base

(c) Acid ✓

(d) Compound

• Reason : HNO is an Acid. Another name for HNO is Nitric Acid.

(3) Alum is used for

(a) Removing chlorine with water

(b) Purificarion of Water.

(c) Killing germs present in water.

(d) All of these.✓

• Reason : Alum is a liquid that is used for removing chlorine with water, purification of water and Killing germs present in the water.

(4) Which of the following is not an indicator ?

(a) Digene ✓

(b) Litmus

(c) Phenolphthalein

(d) Methyl Orange

• Reason : Digene is a medicine which is used for acidity caused by indigestion in our body.

(5) NaOH is a/an

(a) Acid

(b) Salt

(c) Element

(d) Alkali ✓

• Reason : NaoH is an Alkali (base). It is also commonly known as Caustic Soda.

$\bf \sf \: True \: or \: False :$

(1) Nitric acid is used in textile industry.

• True

Nitric acid is used to dye cloths in textile industry.

(2) Bases turns red litmus blue.

• True

Red litmus paper turns bases blue under basic condition.

(3) Acid neutralize bases.

• True

Acid neutralizes bases and forms salt and water as products.

(4) Water is neutral to indicator.

• True

Water is a neutral substance.

(5) Calcium hydroxide is also known as caustic soda.

• False

Calcium hydroxide is also known as Slaked lime.