Mark (T) if the statement is true and (F) if it is false: (a) Digestion of starch starts in the stomach.

(a) True (b) False (c) True (d) False (e) True

(a) False as non metallic oxides are acidic in nature.  (b) True  (c) False as in a displacement reaction more reactive element displaces less reactive metal from its salt.  (d) False as Coal...

(a) Androgens are produced by Sertoli cells. (False) Androgens are produced by Leydig cells found in seminiferous tubules of the testis. (b) Spermatozoa get nutrition from Sertoli cells. (True) (c) Leydig cells are...

(i) Carbon dioxide is released during photosynthesis. (False) (ii) Plants which synthesise their food themselves are called saprotrophs. (False) (iii) The product of photosynthesis is not a protein. (True) (iv) Solar energy is...

(i) Nitric acid turn red litmus blue. (False) (ii) Sodium hydroxide turns blue litmus red. (False) (iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (True) (iv) Indicator...

(a) Cutting a log of wood into pieces is a chemical change. (False) (b) Formation of manure from leaves is a physical change. (False) (c) Iron pipes coated with zinc do not...

(a) We can obtain an enlarged and erect image by a convex mirror. (F) (b) A concave lens always form a virtual image. (T) (c) We can obtain a real, enlarged and...

(a) False – Tongue is attached to the floor of the mouth  cavity at the back. (b) False – The large intestine is shorter and wider than the small intestine of...

(a) False : Oxygen breaks down glucose inside the cells of organisms. (b) True (c) False : Insects have spiracles on the sides of the body. (d) True

(i) False If P = {m, n} and Q = {n, m}, then P × Q = {(m, m), (m, n), (n, m), (n, n)} (ii) True (iii) True