3286: 'Khasi' and 'Garo' tribes mainly live in:
(a) Kerala
(b) Meghalaya
(c) Chota Nagpur
(d) Tamil Nadu
3287: On another planet, the local terminology for earth, water, light, air and sky, are sky, light, air, water and earth respectively. If someone is thirsty there, what would he drink ?
(a) Sky
(b) Water
(c) Air
(d) Light
3288: Which of the following is a weedkiller?
(a) Insecticide
(b) Methyl salicylate
(c) Heribicide
(d) None of these
3289: Which of the following can be found as pollutants in the drinking water in some parts of India?
1. Arsenic
2. Sorbitol
3. Fluoride
4. Formaldehyde
5. Uranium
Select the correct answer using the codes given below.
(a) 1 and 3 only
(b) 1, 3 and 5 only
(c) 2, 4 and 5 only
(d) 1, 2, 3, 4 and 5
3290: A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same material, are all heated to 20°C above room temperature. When left to cool in the room, which of them will reach the room temperature first?
(a) Circular plate
(b) Cube
(c) Sphere
(d) All of them will reach the room temperature at the same time