Stoichiometry — Chemistry MCQs (Class 11)
Free chapter-wise Chemistry MCQs with answers for MDCAT, FSc and entry tests.
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#33 The pair of species having different percentage (mass) of carbon is
A) CH3COOH & C6H12O6
B) CH3COOH & C2H5OH
C) CH3COH3 & H3CCH2COH
D) C2H5OH & CH3OCH3
#34 The total number of neutrons present in 54 mL H2O(1) are (dw 0.99 g/ml)
A) 23.7 NA
B) 22NA
C) 20NA
D) 16NA
#35 The number of neutron in 5 g of D2O are :
A) 0.25NA
B) 2.5NA
C) 1.1NA
D) NA / 5
#36 The mass of one molecular of H2O is ?
A) 18g
B) 18g / NA
C) NA / 18g
D) 18g NA
#37 How many moles of KMnO4 will contains 0.25 mole of oxygen?
A) 0.1mole
B) 1g
C) 6.02 x 1022 molecules
D) 0.006 mole
#38 One mole of P4 molecules contains:
A) 1 molecule of P
B) 4 molecules of P
C) 1/4 NA atoms of P
D) 24.088 x 1023 atoms of P
#39 11.2 liter of a gas at STP weighs 14g . The gas could not be:
A) N2
B) CO
C) B2H6
D) N2O
#40 Consider the reaction
Al (OH)3 + 2HCl → 3H2O + AlCl3
If 14.0 grams of aluminum hydroxide are allowed to react with hydrochloric acid, how much aluminum chloride is produced?
A) 14.0 g
B) 17.9 g
C) 23.9 g
D) 30 g
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