Question

Across

2. A base present in soap (6, 9)

4. An indicator which is used as a food ingredient (8)

5. Relieves from indigestion (7)

6. An indicator obtained from Lichen (6)

9. Soluble base ( 6)

10. An indicator which is green in colour in basic medium (5, 4)

12. An acid present in an ant sting ( 6)

Down

1. Reaction between an acid and a base (14)

3. Tests chemical nature of substances (9)

7. Bitter in taste and soapy to touch ( 4)

8. Sour in taste ( 4)

11. A product of neutralization reaction ( 4)

Accepted Answer

Across

2. Sodium hydroxide is a base present in soap.

4. Turmeric is a natural indicator, which we use for cooking also.

5. Antacids are used for treatment of indigestion.

6. Litmus is a natural indicator obtained from lichens.

9. Water-soluble bases are called alkalies.

10. China Rose is green in colour in presence of a base.

12. The acid present in ant sting is formic acid.

Down

1. The reaction between an acid and a base is called as neutralisation reaction.

3. we can test the chemical nature of substances by using indicators.

7. Base is a substance which is bitter in taste and soapy to touch.

8. An acid is sour in taste.

11. A product of neutralization reaction is salt.

Neha Sharma, Dimple Tomar and, Dr. Archana Pundirr Solutions for Chapter: Different Kinds of Materials, Exercise 7: TASKS FOR FORMATIVE ASSESSMENT

Neha Sharma Science Solutions for Exercise - Neha Sharma, Dimple Tomar and, Dr. Archana Pundirr Solutions for Chapter: Different Kinds of Materials, Exercise 7: TASKS FOR FORMATIVE ASSESSMENT

Questions from Neha Sharma, Dimple Tomar and, Dr. Archana Pundirr Solutions for Chapter: Different Kinds of Materials, Exercise 7: TASKS FOR FORMATIVE ASSESSMENT with Hints & Solutions

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