Practice Questions

The value of the theoretical yield is independent of:

A. The amount of limiting reactant
B. The coefficients in the balanced equation
C. The efficiency of the laboratory procedure
D. The molar mass of the product
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The “yield” of a reaction always refers to the amount of:

A. Reactant consumed
B. Product formed
C. Catalyst used
D. Energy released
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The concept of yield is most important in the field of:

A. Theoretical chemistry
B. Chemical manufacturing and synthesis
C. Physical chemistry
D. Analytical chemistry
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

A student calculates a theoretical yield of 10g but measures an actual yield of 11g. This result is:

A. Impossible
B. Possible and indicates a highly efficient reaction
C. Possible, but suggests the product is wet or contaminated with impurities
D. A common result for this type of reaction
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

If the percent yield is 75%, it means the reaction produced:

A. 75% of the limiting reactant
B. 75% of the excess reactant
C. 75% of the maximum possible amount of product
D. 25% of the theoretical yield
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The amount of product predicted by stoichiometry is the:

A. Actual yield
B. Percent yield
C. Experimental yield
D. Theoretical yield
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

Improving laboratory techniques, such as ensuring complete transfer of materials, is done to increase the:

A. Theoretical yield
B. Actual yield
C. Rate of reaction
D. Activation energy
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The difference between the theoretical yield and the actual yield is related to the ______ of the reaction.

A. speed
B. reactants
C. products
D. inefficiency or loss
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

If a chemist aims to produce 50 g of a substance (theoretical yield) but only obtains 40 g, the 40 g represents the:

A. Percent yield
B. Actual yield
C. Limiting reactant mass
D. Stoichiometric yield
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The actual yield must be determined by:

A. Calculation using mole ratios
B. Estimation
C. Experimentation
D. Guessing
nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026
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