Chemistry MCQS - 1

Question: 1

Which of the following is used to cure thyroid cancer?

(A) U-92

(B) Co-60

(C) Ra-180

(D) I-123

Question: 2

Which one element does not have its allotropic forms?

(A) Nitrogen

(B) Oxygen

(C) Phosphorus

(D) Sulphur

Question: 3

Permanent hardness of water can be removed by adding

(A) Washing soda

(B) Bleaching powder

(C) Chlorine

(D) Potassium permanganate

Question: 4

Azotropic mixtures are

(A) Constant boiling mixture

(B) Mixture of two solids

(C) Those which can be fractionally distilled

(D) Those which boil at different temperatures

Question: 5

In the process of electrolysis oxidation occurs at

(A) Anode

(B) Cathode

(C) Both of these

(D) None of these