Question

27. Which of the following is used to make khadi
b) Silk
esCotton
d)Coir
a)Jute
28. Magnetite, an iron ore is
b) an artificial magnet
a)a natural magnet
d)not a magnet
c)an electromagnet
29. How much area of the Earth's surface is covered with water
b)1/3
c)3/4
d)2/3
a) 1/2
30. The purest form of water is
b)tap water
c)river water
d)none of thes
a)rain water​

Answer 1

Answer:

cotton

natural magnet

1/3

rain water