Components of F...

Biological particles survive in atmosphere for short period of time due to lack of ______________.

Given below are the steps to test the presence of proteins in
a food item:

(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it and shake it.

(ii) Make a paste or powder of food to be tested.

(iii) Add $$10$$ drops of caustic soda solution to the test tube and shake well.

(iv) Add $$2$$ drops of copper sulphate solution to it.

Which of the following is the correct sequence of the steps? 

Read the statements given below and fill up the blanks with the correct words listed in the box.
The meal that includes all _____ is a balanced diet.

Given below from (i) to (iv) are some food items.
i) Boiled and mashed potato
ii) Glucose solution
iii) A slice of bread
iv) Mustard oil
Which of the above will give blue-black colour when tested with iodine? 

Loss of vision in darkness is associated with the deficiency of

Which of the following is a rich source of protein?

The deficiency of ________ causes the decay of bones and teeth.

The deficiency of ________ may lead to mental disability in children.

Iron builds ___________ and iron-rich food such as leafy vegetables, jaggery, meat, citrus, Indian gooseberry (amla) are good for adolescents.

Which of the following is the symptom of Rickets?