Question

1.State the differences between acids and bases.

2. Ammonia is found in many household products, such as window

cleaners. It turns red litmus blue. What is its nature?

3. Mark ‘T’ if the statement is true and ‘F’ if it is false:

(i) Nitric acid turn red litmus blue.

(ii) Sodium hydroxide turns blue litmus red.

(iii) Indicator is a substance which shows different colours in acidic

and basic solutions.

4. How does the spot of turmeric on the cloth change its colour,when we try to wash it with soap.​

Answer 1

Answer:

Q 1. State differences between acids and bases. SOLUTION: Q 2. Ammonia is found in many household products such as window cleaners. ... Take some dilute hydrochloric acid in a test tube and add 2-3 drops of phenolphthalein. ... Mark 'T' if the statement is true and 'F' if it is false. (i) Nitric acid turns red litmus blue. (T/F)

Explanation:

hope it helps..

Answer 2

Explanation:

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4. A carpenter earns * 1650 in 3 hours. How much will he earn in 9 hours?

5. An aeroplane flies 3200 km in 4 hours. How far does it travel in 7 hours?