Natasha Mehta Solutions for Exercise 8: EXERCISE
Natasha Mehta Science Solutions for Exercise - Natasha Mehta Solutions for Exercise 8: EXERCISE
Attempt the free practice questions from Exercise 8: EXERCISE with hints and solutions to strengthen your understanding. Sciwise - A coursebook of Science solutions are prepared by Experienced Embibe Experts.
Questions from Natasha Mehta Solutions for Exercise 8: EXERCISE with Hints & Solutions
A white shirt with a yellow stain of curry is washed using soap. When the soap is applied on the stain, the stain turns red and works like an indicator.
a. Name the indicator present in the curry.
b. What do you think is the nature of the soap as it turned the yellow stain red?
How is the strength of an acid or base related to its concentration?
Why is it advised to have meals on time?
Do you think the acidic or basic nature of the soil is of any use for the growth of plants? Why?
In our stomach, hydrochloric acid is released which helps to digest food and also kills microorganisms present in it, if any, but, in case of toothpastes, we use a base so that no microbe can grow in our mouth. Why don't we use an acid in the toothpastes instead of a base?
Search these words in the word search:
1. Litmus
2. Acids
3. Bases
4. Alkali
5. Ions
6. Corrosive
7. Phenolphthalein
8. Neutralisation
9. Ammonia
10. Indicators
Find out one plant each that grows in the acidic and basic soil, respectively.
Here is a list of food items given below:
Oranges, Potato, Coconut, Pineapples, Tea, Rice, Milk, Bananas
Classify these food items as acidic, basic or neutral in nature.
Which state or union territory is the largest producer of each of the above mentioned food items?
