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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