4151: Which one of the following pairs of cities has recently been connected through a 6-lane express way ?
(a) Ahmedabad : Vadodara
(b) Dhaka : Chittagong
(c) Islamabad : Lahore
(d) Mumbai : Pune
4152: Micro-elements needed to increase soil fertility are:
(a) Nitrogen, hydrogen and calcium
(b) Nitrogen, phosphorus and potassium
(c) Iron, calcium and potassium
(d) Manganese, copper and zinc
4153: Which one of the following has the highest fuel value ?
(a) Hydrogen
(b) Charcoal
(c) Natural Gas
(d) Gasoline
4154: The Himalayan Range is very rich in species diversity, Which one among the following is the most appropriate reason for this Phenomenon?
(a) It has a high rainfall that supports luxuriant vegetative growth
(b) It has less human interference
(c) Exotic and invasive species have riot been introduced in this region
(d) It is a confluence of different bio-geographical zones
4155: Zero was invented by
(a) Aryabhata
(b) Varahamihira
(c) Bhaskara I
(d) an unknown Indian