Observe the below statements.
(i) Protein deficiency in diet leads to Kwashiorkor disease.
(ii) Deficiency of only calories leads to Marasmus disease.

Q. Which of the following statements are true w.r.t. the kwashiorkor disease?

(i) It is usually observed in children in the age group 1-5 years.
(ii) It is caused by severe protein deficiency even if sufficient carbohydrates and fats are consumed.

(iii) It is usually seen in infants below the age of 1 year.

(iv) It is caused by deficiency of proteins, fats and carbohydrates in diet.

Q. The following are the symptoms of Kwashiorkor and marasmus. Categorize them correctly:-
I. It is caused by the deficiency of protein in the diet.
II. It is caused by the prolonged deficiency of protein and calories in the diet.
III. It affects infants under one year of age
IV It commonly affects babies between 1-3 years of age.
V. Subcutaneous fat persists.
VI. Subcutaneous fat is used up, making ribs very prominent.

Q. Let A be a $2\times 2$ matrix
Statement - I : adj (adj A) = A
Statement - II : |adj A| = |A|

Q. Statement I: Two atoms of X combine with three atoms of Y to form ${\text{X}}_2{\text{Y}}_3$.

Statement II: From the chemical formula of the compound ${\text{X}}_2{\text{Y}}_3$, we can conclude that the valency of X is 2.