2726: Sir J. C. Bose was a great scientist because he showed the:
(a) Sensitivity in plants
(b) Pigments in plants
(c) Growth in plants
(d) Relations between plants and animals
2727: Chemical composition of pearl is:
(a) Calcium carbonate
(b) Calcium carbonate and magnesium carbonate
(c) Calcium sulphate
(d) Calcium chloride
2728: The beginning of urbanisation of the Ganges from the 6th century was mainly attributed to:
(a) Fertility of soil
(b) Trade improvement
(c) Population growth
(d) None of the above
2729: Consider the following pairs:
Large Bank : Country of origin
1. ABN Amro Bank : USA
2. Barclays Bank : UK
3. Kookmin Bank : Japan
Which of the above pairs is/are correctly matched?
(a) 1 only
(b) 1 & 2
(c) 2 only
(d) 2 & 3
2730: The length, breadth and height of a room are 1, b and h respectively. The perimeter of the ceiling expressed as a percentage of the total area of the four walls is
(a) 100 h
(b) 100/h
(c) h
(d) h/100