4546: Pumice is derived from:
(a) Volcanic rock
(b) Sedimentary rock
(c) Igneous rock
(d) Acid lava
4547: Direct taxation was introduced by the ...... committee.
(a) Wanchoo
(b) Chetty
(c) Kaldor
(d) Raja Chelliah
4548: Production of which one of the following is a function of the liver?
(a) Lipase
(b) Mucus
(c) Hydrochloric acid
(d) Urea
4549: With reference to Pondicherry (now Puducherry), consider the following statements:
1. The first European power to occupy Pondicherry were the Portuguese.
2. The second European power to occupy Pondicherry were the French.
3. The English never occupied Pondicherry.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
4550: Solution of washing soda in water is:
(a) Acidic
(b) Basic
(c) Neutral
(d) Sour