(b) Chile saltpetre
(d) None of these
The alkali metal which is a liquid at room temperature is
Which of the following is used in atomic reactors?
Which is the most reactive metal?
Which of the following structures of a plant is responsible for transpiration?
Hydrothodes occur on
(d) All of these
The maximum loss of water in transpiration is from
Hydroponics is a method of culture of plants without using
In plant body, the water and minerals are transported by
A copper chariot of Harappa times was discovered at