3221: Assertion (A) : Cellulose is used in making shatter proof glass.
Reason (R) : Polysaccharides are not soluble in water.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
3222: Four wires of same material and of dimensions as under as stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?
(a) Wire of 1 m length and 2 mm diameter
(b) Wire of 2 m length and 2 mm diameter
(c) Wire of 3 m length and 1.5 mm diameter
(d) Wire of 1 m length and 1 mm diameter
3223: The most effective contribution made by Dadabhai Naoroji to the cause of Indian National Movement was that he
(a) Brought the problems of Indians to the notice of the British.
(b) Exposed the economic exploitation of India by the British.
(c) Interpreted the ancient Indian texts and restored the self-confidence of Indians.
(d) Stressed the need for eradication of all the social evils before anything else.
3224: 'Khasi' and 'Garo' tribes mainly live in:
(a) Kerala
(b) Meghalaya
(c) Chota Nagpur
(d) Tamil Nadu
3225: The scientific view is that the increase in global temperature should not exceed 2°C above pre-industrial level. If the global temperature increases beyond 3°C above the pre-industrial level, what can be its possible impact/impacts on the world?
1. Terrestrial biosphere tends toward a net carbon source
2. Widespread coral mortality will occur
3. All the global wetlands will permanently disappear.
4. Cultivation of cereals will not be possible anywhere in the world
Select the correct answer using the code given below:
(a) 1 only
(b) 1 and 2 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4