Chemistry Multiple Choice Questions Schools Online Exam Quiz
Chemistry Multiple Choice Questions Schools GK Quiz. Question and Answers related to Chemistry Multiple Choice Questions Schools. MCQ (Multiple Choice Questions with answers about Chemistry Multiple Choice Questions Schools
What is the molality of a dilute aqueous 0.02 N H3PO4 solution?
Options
A : 0.0050
B : 0.0200
C : 0.00330
D : 0.0067
Iron (III) oxide chunks contain 80 ppm silica (SiO2). What is the concentration of this impurity in mass%?
Options
A : 0.008%
B : 0.080%
C : 0.800%
D : 8.000%
Calculate the mole fraction of A if 25g of it is dissolved in 50 moles of B. Given the molar mass of A is 25 g/mole.
Options
A : 0.0196
B : 0.5000
C : 0.3333
D : 0.9259
What is the mole fraction of glycerin C3H5(OH)3 in a solution containing 33g of glycerin, 60g isopropyl alcohol and rest water?
Options
A : 0.359
B : 0.258
C : 0.205
D : 0.480
What is the molarity of a 15 ml, 2 M aqueous solution when 285 ml of water is added to it?
Options
A : 0.400 M
B : 0.100 M
C : 0.111 M
D : 0.105 M
What is the molarity of 20% (w/v) H2SO4 solution?
Options
A : 0.51 M
B : 1.02 M
C : 4.08 M
D : 2.04 M
If a urea (NH2CONH2) contains 45% (by mass) N2, what is the actual urea content in the sample?
Options
A : 103.7 kg
B : 96.4 kg
C : 9.65 kg
D : 10.4 kg
Calculate the volume (mL) of concentrated acid required to prepare 500 mL of 0.25 N HCl solution from concentrated stock HCl solution (specific gravity = 1.19) and 37.2% (by mass).
Options
A : 12.128 mL
B : 20.613 mL
C : 10.307 mL
D : 24.256 mL
If 2 L, 4 L and 6 L of three separate solutions of concentrations 1 M, 2 M and 3 M, respectively, are mixed together then what is the concentration of the resultant mixture?
Options
A : 2.333 M
B : 6.000 M
C : 3.333 M
D : 1.500 M
What is the normality of lead (II) nitrate if the density of its 26% (w/w) aqueous solution is 3.105 g/mL? Take molar mass of lead (II) nitrate to be 331g/mol.
Options
A : 2.437 N
B : 4.878 N
C : 0.243 N
D : 0.488 N
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