2716: Which one of the following processes in the bodies of living organisms is a digestive process ?
(a) Breakdown of proteins into amino acids
(b) Breakdown of glucose into CO2 and H2O
(c) Conversion of glucose into glycogen
(d) Conversion of amino acids into proteins
2717: otal time taken by a person in going to a place by walking and returning on cycle is 5 hours 45 minutes. He would have gained 2 hours by cycling both ways. The time taken by him to walk both ways is
(a) 6 hours 45 minutes
(b) 7 hours 45 minutes
(c) 8 hours 15 minutes
(d) 8 hours 30 minutes
2718: The major chemical compound found in human kidney stones is
(a) Uric acid
(b) Calcium carbonate
(c) Calcium oxalate
(d) Calcium sulphate
2719: Which of the following substances are found in the beach sands of many parts of Kerala?
1. Ilmenite
2. Zircon
3. Silimanite
4. Tungsten
Select the correct answer using the code given below :
(a) 1, 2, 3 and 4
(b) 1, 2 and 3
(c) 3 and 4 only
(d) 1 and 2 only
2720: The first Trade Union in India was:
(a) Madras Labour Union
(b) Bombay Postal Union
(c) Printers Union of Calcutta
(d) All India Trade Union Congress