4231: Consider the following:

1. Oxides of Hydrogen

2. Oxides of Nitrogen

3. Oxides of Sulphur

Which of the above causes/cause acid rain ?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
4232: Which one of the following statements is not correct?

(a) There is no definition of the Scheduled Tribe in the Constitution of India.

(b) North-East India accounts for a little over half of the countrys tribal population.

(c) The people known as Todas live in the Nilgiri area.

(d) Lotha is a language spoken in Nagaland.
4233: The Indian Space Research Organisation is situated at:

(a) Trivandrum

(b) Bangalore

(c) Ahmedabad

(d) Thumba
4234: Athlete's Foot is a disease caused by

(a) Bacteria

(b) Fungus

(c) Protozoan

(d) Nematode
4235: Which among the following has the largest perimeter?

(a) A square with an area of 25 sq cm

(b) An equilateral triangle with side 5 cm

(c) A circle with diameter 4 cm

(d) A rectangle with area 84 sq cm and one side 12 cm