Stoichiometry The atomic heat capacities of all solid elements __________ with decrease in temperature. Increases Approach zero at 0°C Remains unchanged Decreases Increases Approach zero at 0°C Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the Different elevation in boiling point None of these Same elevation in boiling point Elevation in boiling point in the ratio of their molecular weights Different elevation in boiling point None of these Same elevation in boiling point Elevation in boiling point in the ratio of their molecular weights ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry If 1.5 moles of oxygen combines with aluminium to form Al2O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm. 27 5.4 2.7 54 27 5.4 2.7 54 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following expressions defines the Baume gravity scale for liquids heavier than water? (400/G) - 400 (141.5/G) - 131.5 145 - (145/G) 200(G-1) (400/G) - 400 (141.5/G) - 131.5 145 - (145/G) 200(G-1) ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the Equivalent weight of the metal is 8 Atomic weight of the metal is 2 Atomic weight of the metal is 4 Equivalent weight of the metal is 4 Equivalent weight of the metal is 8 Atomic weight of the metal is 2 Atomic weight of the metal is 4 Equivalent weight of the metal is 4 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) 350 345 140 485 350 345 140 485 ANSWER DOWNLOAD EXAMIANS APP
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