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Accelerate JEE 2020: Stoichiometry Class-1 Quiz (11.07.2019)

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Question 1

An aqueous solution of oxalic acid dihydrate contains its 6 .3 g in 250 ml. The volume of 0 .1 N NaOH required to completely neutralize 10 ml of this solution-

Question 2

An organic compound contains C, H and S. The minimum molecular weight of the compound containing 8% sulphur is: (atomic weight of S=32 amu)

Question 3

How many moles of magnesium phosphate, Mg3(PO4)2 will contain 0.25 mole of oxygen atoms?

Question 4

Excess of NaOH (aq) was added to 100 mL of FeCl3 (aq) resulting into 2.14 g of Fe(OH)3. The molarity of FeCl3 (aq) is:
(Given molar mass of Fe=56 g mol-1 and molar mass of Cl=35.5 g mol-1)

Question 5

Experimentally it was found that a metal oxide has formula M0.98O. Metal M, is present as M2+ and M3+ in its oxide. Fraction of the metal which exists as M3+ would be
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