Exploring Substances Acidic Basic and Neutral Class 7 Very Short Question Answer

Exploring Substances Acidic Basic and Neutral Class 7 Very Short Question Answer

Exploring Substances Acidic Basic and Neutral Class 7 Very Short Question Answer

Question 1.

How lichens are formed?

Answer:

Lichens are formed by the association of two living organisms, a fungus and an alga.

Question 2.

What happens to blue litmus paper when it is dipped in vinegar?

Answer:

The blue litmus paper turns red, indicating that vinegar is acidic.

Question 3.

What is the result of mixing an acid with a base?

Answer:

Mixing an acid with a base results in a neutralisation reaction, producing salt, water and heat.

Question 4.

Why Hydrangea flowers are different in colours?

Answer:

Depending on the nature of the soil hydrangea gives flowers of different colours.

Question 5.

What type of soil produce what colour of flowers?

Answer:

Acidic soil produces blue-coloured flowers and in basic soil flowers are red or pink.

Question 6.

How the gardeners alter the colour of Hydrangea flowers ?

Answer:

By adjusting the soil acidic or basic nature.

Question 7.

What colour does turmeric paper turn in a basic solution?

Answer:

Turmeric paper turns red in a basic solution.