Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 2240 0.4 1120 4480 2240 0.4 1120 4480 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is N₂O₄ N₂O₃ N₂O₅ None of these N₂O₄ N₂O₃ N₂O₅ None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be More acidic Neutral Of the same acidity Basic More acidic Neutral Of the same acidity Basic ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant? 273°K 200°C 273°C 100°C 273°K 200°C 273°C 100°C ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Gases diffuse faster compared to liquids because of the reason that the liquid molecules Are heavier Move faster Are held together by stronger inter-molecular forces Have no definite shape Are heavier Move faster Are held together by stronger inter-molecular forces Have no definite shape ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature. Increases Decreases Varies linearly Does not vary Increases Decreases Varies linearly Does not vary ANSWER DOWNLOAD EXAMIANS APP
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