High School Chemistry Questions and Answers - 2

Question: 6

Which of the following is not correctly matched?

(A) Calomel - Mercurous chloride

(B) Plaster of Paris - Calcium sulphate

(C) Green vitriol - Copper sulphate

(D) Galena - Lead sulphide

Question: 7

When the pH of a solution is zero, then it is

(A) Basic

(B) Neutral

(C) Strongly acidic

(D) None of these

Question: 8

The enzyme which converts glucose and fructose into alcohol is

(A) Maltase

(B) Zymase

(C) Invertase

(D) Diastase

Question: 9

Which form of phosphorus is used in safety metals?

(A) Black phosphorus

(B) Yellow phosphorus

(C) White phosphorus

(D) Red phosphorus

Question: 10

What is the composition of Nitrolim a chemical fertilizer?

(A) Calcium carbide and nitrogen

(B) Calcium carbide and carbon

(C) Nitrogen and limestone

(D) None of the above