3026: Alpha-keratin is a protein present in
(a) blood
(b) skin
(c) wool
(d) eggs
3027: Urea is prepared by the chemical reaction of:
(a) Ammonia and Carbon dioxide
(b) Ammonium sulphate and calcium chloride
(c) Acetamide and ethyl alcohol
(d) Chlorine and water
3028: The first Civil Disobedience Movement was started by Gandhiji after the:
(a) Rowlatt Act of 1919
(b) Jallianwala Bagh massacre in 1919
(c) Chauri Chaura incident in 1922
(d) Arrival of Cripps Mission in 1942
3029: With reference to Indian transport systems, consider the following statements:
1. Indian railways system is the largest in the world.
2. National Highways cater to 45 per cent of the total road transport demand.
3. Among the states, Kerala has the highest density of surface road.
4. National Highway No. 7 is the longest in the country.
Which of these statements are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 2 and 4
3030: The purest form of water is obtained from:
(a) A deep tube well
(b) A running stream
(c) Hot water spring
(d) Heavy rains