Match the following: Column A Column B 1. Acid a. Acidic 2. Bee sting b. Base 3. Alkali c. NaOH solution 4. Salt d. Blue litmus red 5. Baking soda e. Acid+ Base

1. Acid d. Blue litmus red Acid turns blue litmus red. 2. Bee Sting a. Acidic Bee sting injects an acid to skin. 3. Alkali c. NaOH solution NaOH is an alkali solution. 4. Salt e. Acid + Base Acid reacts with base to form salts and water. 5. Baking Soda b. Base Baking soda is basic in nature. Column A Column B 1. Acid d. Blue litmus red 2. Bee sting a. Acidic 3. Alkali c. NaOH solution 4. Salt e. Acid+ Base 5. baking soda b. Base

E M B I B E

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

EASY

7th CBSE

IMPORTANT

Earn 100

Identify the acid and base from which the following salt are made:
${N a}_{2} {S O}_{4}$

Important Questions on Acids, Bases and Salts

MEDIUM

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

Identify the acid and base from which the following salt are made:

{C a C l}_{2}

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

Identify the acid and base from which the following salt are made:

${N H}_{4} {N O}_{3}$

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

Identify the acid and base from which the following salt are made:

{M g C O}_{3}

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

Identify the acid and base from which the following salt are made:

K_{2} {S O}_{4}

HARD

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q B

Match the following:

Column A	Column B
1. Acid	a. Acidic
2. Bee sting	b. Base
3. Alkali	c. $NaOH$ solution
4. Salt	d. Blue litmus red
5. Baking soda	e. Acid+ Base

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q C

Milk changes into curd due to acid formation. Find out which bacteria does it and which acid forms.

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q C

You are given solutions of an acid and a base. How will the colour of red litmus change if you start adding base into the acid solution. What will be its colour when you have added excess base?

EASY

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 5 - Acids, Bases and Salts>Worksheet FA>Q C

Acids derived from plants and animal products are weak. What do you think is the reason for this?