NIOS Class 10 Science Activity 22.4 Life Processes Solution

This activity helps us understand the process of digestion in different parts of the human alimentary canal.

 

NIOS Class 10 Science Life Processes Activity Solution

This activity is based on the NIOS Class 10 science and technology (212) Chapter 22- Life Processes Module 5- The Living World.

Activity 22.4- Food Adulteration Explanation

Aim

This activity helps to identify common adulterants present in food items and to determine whether they are edible or inedible.

Materials Required

   1. Rice

   2. Pulses

   3. Wheat

   4. Black pepper

   5. Coriander seeds

   6. What paper or plate

Procedure

We take small samples of five food items and spread each sample on a clean white paper or plate.

Now we observe the samples for any foreign particles and identify the adulteration present in them.

We note whether these adulterants are edible or inedible.

Observation

S.N.	Food item	Adulterant	Edible/inedible
1	Rice	Small stones, husk	Inedible
2	Pulses	Stones, sand	Inedible
3	Wheat	Dust, small stones	Inedible
4	Black paper	Papaya seeds	Inedible
5	Coriander seeds	Straw, stones	Inedible

 

Explanation

Food adulteration is the mixing of inferior or harmful substances in food items. Adulterants reduce the quality of food items and can be harmful to health.

Some adulterants are visible, while others are more difficult to detect.

 These adulterants must be removed from the food items, and this process takes time and labour.

Conclusion

We can conclude that inedible adulterants such as stones, sand, straws and dust are found in the food items so they are cleaned before cooking to avoid health problems.