(a) Sylvine
(b) Chile saltpetre
(c) Carnallite
(d) None of these
Answer:
The alkali metal which is a liquid at room temperature is
(a) Rb
(b) Cs
(c) Fr
(d) Na
Answer:
Which of the following is used in atomic reactors?
(a) Cd
(b) Fe
(c) Al
(d) Ru
Answer:
Which is the most reactive metal?
(a) Iron
(b) Sodium
(c) Potassium
(d) Calcium
Answer:
Which of the following structures of a plant is responsible for transpiration?
(a) Root
(b) Bark
(c) Xylem
(d) Stomata
Answer:
Hydrothodes occur on
(a) Root
(b) Stem
(c) Leaves
(d) All of these
Answer:
The maximum loss of water in transpiration is from
(a) Stomata
(b) Lenticles
(c) Hydothodes
(d) Cuticle
Answer:
Hydroponics is a method of culture of plants without using
(a) Soil
(b) Sand
(c) Light
(d) Water
Answer:
In plant body, the water and minerals are transported by
(a) Parenchyma
(b) Bast
(c) Xylum
(d) Collenchyma
Answer:
A copper chariot of Harappa times was discovered at
(a) Lothal
(b) Harappa
(c) Mohenjodaro
(d) Chanhudaro
Answer: