Which type of vitamin is found plenty in lemon?

The table below shows some common symptoms of nutrient deficiency.

Pankaj is suffering from tooth decay and bleeding gums. Which of the following nutrients in food would help him recover?

Fat-rich foods leave an oily patch on paper when smashed or rubbed on it. Raju wanted to check this through an activity. He performed the following steps.

Step 1: Placed a fat-rich food item on a piece of white paper.

Step 2: Smashed the food gently with a hammer.

Step 3: Removed the smashed food from the paper.

Step 4: Dried the paper and then checked for any patches on it.

In Step 4, Raju dried the paper before checking for patches. What could be the most likely reason for this?

Fat-rich foods leave an oily patch on paper when smashed or rubbed on it. Raju wanted to check this through an activity. He performed the following steps.

Step 1: Placed a fat-rich food item on a piece of white paper.

Step 2: Smashed the food gently with a hammer.

Step 3: Removed the smashed food from the paper.

Step 4: Dried the paper and then checked for any patches on it.

Raju performed the same activity with four types of food. Which of the following will decide the amount of fat in each food item?

Given below are the four food components (P-S) and their corresponding sources.
P - Meat, Fish, Egg
Q - Butter, Ghee, Margarine
R - Bread, Biscuit, Potato
S - Amla, Tomato, Orange

Select the incorrect statement regarding them.

Read the following statements about diseases.

(i) They are caused by germs.

(ii) They are caused due to lack of nutrients in our diet.

(iii) They can be passed on to another person through contact.

(iv) They can be prevented by taking a balanced diet.

Which pair of statements best describe a deficiency disease?