Exploring Substances Acidic Basic and Neutral Class 7 Short Question Answer

Exploring Substances Acidic Basic and Neutral Class 7 Short Question Answer

Exploring Substances Acidic Basic and Neutral Class 7 Short Question Answer

Question 1.

Explain how turmeric can be used as an indicator.

Answer:

Turmeric can be used as an indicator because it turns red in basic solutions and remains yellow in acidic and neutral solutions, allowing us to identify the nature of the solution.

Question 2.

What is the significance of using indicators in testing substances?

Answer:

Indicators are significant as they help determine the acidic, basic, or neutral nature of substances, allowing for safe handling and appropriate applications in various fields.

Question 3.

Explain the concept of neutralisation with an example from daily life.

Answer:

Neutralisation is the reaction between an acid and a base to form salt and water. An example is using baking soda to relieve pain from an ant bite, where the baking soda neutralises the formic acid injected by the ant.

Question 4.

Discuss the role of indicators in environmental science, particularly in assessing water quality.

Answer:

Indicators play a crucial role in environmental science by helping assess water quality. They can indicate the acidic or basic level of water bodies, revealing whether the water is acidic or basic, which is vital for aquatic life and ecosystem health.