171. The oxidation number of nitrogen in nitric acid is?
A) +2
B) +3
C) +4
D) +5
172. Butter is an example of a solution?
A) Gas in liquid
B) Liquid in solid
C) Solid in liquid
D) Gas in solid
173. The number of elements in the Sixth period is?
A) 8
B) 18
C) 22
D) 32
174. 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
175. What volume of solution contains 0.1 mol of solute. If molarity of solution is 0.5 M:
A. 100 ML
B. 200 ML
C. 500 ML
D. 250 ML
176. Which of the following solution of H2SO4 will exactly neutralize 100 ML of 0.5 Molar Naoh solution:
A. 50 mL OF 0.5 M solution
B. 50 mL of 0.25 M solution
C. 100 mL of 0.5 M solution
D. 100 mL of 0.1 M solution
177. Which of the following is not a colligative property:
A. Osmotic pressure
B. Lowering in Vapor pressure
C. Boiling point
D. Depression in Freezing point
178. Solution of acetone in ethanol:
A. Obeys Raoult’s law
B. Show negative derivation from Raoult’s law
C. Show positive derivation from Raoult’s law
D. Show nearly ideal behavior
179. According to Raoult’s law. relative lowering of vapor pressure is equal to:
A. Mole fraction of solute
B. Mole fraction of solvent
C. Moles of solute
D. Moles of solvent
180. Kf of water is:
A. 1.86 Degree centigrade
B. 0.86 Degree centigrade
C. 1.52 Degree centigrade
D. 0.52 Degree centigrade
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