The elements which is used in the preparation of matches due to their rapid burring property is_________.
A) Sulphur
B) Phosphorous
C) Magnesium
D) Iodine
Brain controls the body just like the ________ controls activities of a cell.
A) Ribosomes
B) Cytoplasm
C) Nucleus
D) Mitochondria
Which of the following is a non-magnetic material?
A) Cobalt
B) Nickel
C) Iron
D) Copper
If one of the surfaces of a lens is concave and the other is convex such that the central region of the lens is thinner than its edges, it is called:
A) Plano concave lens
B) Double Convex lens
C) Convex concave lens
D) Concave convex lens
Enzymes ate special types of _________ produced by the body.
A) Mineral
B) Proteins
C) Vitamin
D) None of these
