Which color of light has shortest wavelength

(A) Red
(B) Green
(C) Blue
(D) None of thee

The answer is: (C) Blue

Fathom is the unit of

(A) Sound
(B) Depth
(C) Distance
(D) Frequency

The answer is: (B) Depth

(A) Sodium Carbonate
(B) Calcium Carbonate
(C) Sodium Bicarbonate
(D) Calcium Bicarbonate

The answer is: (A) Sodium Carbonate

(A) Copper
(B) Aluminium
(C) Lead
(D) Tungsten

The answer is: (D) Tungsten

(A) Helium
(B) Oxygen
(C) Argon
(D) None of these

The answer is: (A) Helium