Chemistry MCQs for Test & Interview Preparation
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91. Which of the following solution is more dilute?
(a) 1.0M
(b) 0.5M
(c) 0.05M
d) 0.005M
92. Milk is an example of?
(a) Solution
(b) Colloids solution
(b) Saturated solution
(d) Suspension
93. Water droplet in air is an example of solution?
(a) Gas in gas
(b) Liquid in gas
(b) Gas in liquid
(d) Liquid in liquid
94. When there is low concentration of solute in solution, it is known as?
(a) Dilute solution
(b) Concentrated solution
(b) Saturated solution
(d) super saturated solution
95. What is the concentration, in % mass by volume of a solution containing 15.0g KCL in 600.0cm3 solution?
(a) 5:00%%
(6) 2.00%
(C) 0.200%
(d) 2.50%
96. Morality is the number of moles of solute dissolved in?
(a) 1 kg solvent
(b) 1 dm3 of solvent
(c) 1 kg of solution
(d) 1 dm3 of solution
97. The molarity of a NaOH solution by dissolving 4 g of it in 250 ml water is?
(a) 0.4 M
(b) 0.8M
(c) 0.2M
(d) 0.1 M
98. Which of the following deals with how chemical and electrical energy are converted into one another?
(a) Chemistry
(b) Electrochemistry
(b) Physical chemistry
(d) Inorganic chemistry
99. The oxidation number of nitrogen N2 is?
(b) +3
(a) +1
(c) 0
(d )-3
100. Which of the following is the oxidation number of C in CH3OH?
(a) -2
(b) -1
(c) 0
(d)+1
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