Chemistry MCQS

151. Milk of magnesia is an example of?
A) Solution
B) True solution
C) Colloids
D) Suspension

152. Air is an example of a solution of?
A) Liquid in gas
B) Gas in gas
C) Solid in gas
D) Gas in liquid

153. The maximum number of electrons in the L-Shell is?
A) 2
B) 8
C) 18
D) 32

154. The molar mass of H2SO4 is?
A) 98 g
B) 98 amu
C) 9.8 g
D) 9.8 amu

155. The empirical formula of Hydrogen peroxide is?
A) HO
B) H2O
C) HO2
D) H2O2

156. The oxidation number of nitrogen in nitric acid is?
A) +2
B) +3
C) +4
D) +5

157. The chemical formula of rust is?
A) FeSO4
B) Fe2O3
C) Fe2O2
D) Fe2N3

158. Butter is an example of a solution?
A) Gas in liquid
B) Liquid in solid
C) Solid in liquid
D) Gas in solid

159. The number of elements in the Sixth period is?
A) 8
B) 18
C) 22
D) 32

160. The elements which are present on the extreme left side of the periodic table are called?
A) Halogen group
B) Alkaline earth metals
C) Noble gases
D) Alkali Metals