Out of the following which is the non-magnetic substance?

(A) Iron

(B) Nickel

(C) Cobalt

(D) Copper

Methylated spirit is a mixture of:

Which of the following is baking soda?

(A) $N{a}_{2}C{O}_3.10H_{2}0$

(B) $NaHC{O}_3$

(C) $N{a}_{2}C{O}_3.H_{2}O$

(D) $N{H}_{4}Cl$

Which one of the following is essential for blood clotting?

Light from the sun reaches earth in nearly _____.

When an object is placed between two parallel mirrors, the number of images formed will be _____.

Dialysis is used when there is a malfunction of:

The 38th parallel separates: