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Practice Questions

The protein coat surrounding the genetic material in a virus is called:

A. Capsid ✓
B. Envelope
C. Capsomere
D. Peplomer
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

Viruses are considered obligate intracellular parasites because:

A. They have no ribosomes
B. They can only replicate inside host cells ✓
C. They contain only one type of nucleic acid
D. They lack mitochondria
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nmdcat.online ACELLULAR LIFR
Jun 24, 2026

To obtain an actual yield of 40g of a product with a 80% yield, one must start with reactants calculated to produce a theoretical yield of:

A. 32 g
B. 40 g
C. 50 g ✓
D. 80 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

If you obtain 4.5 g of a product and the percent yield was 90%, the theoretical yield was:

A. 4.05 g
B. 4.5 g
C. 5.0 g ✓
D. 9.0 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

A lab procedure states that the reaction has a 95% yield. If the theoretical yield is 10 g, the expected actual yield is:

A. 10 g
B. 9.5 g ✓
C. 10.5 g
D. 95 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The reaction 2Mg + O₂ → 2MgO has a theoretical yield of 40 g of MgO. If the reaction has an 85% yield, the mass of MgO produced is:

A. 40 g
B. 85 g
C. 34 g ✓
D. 47 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The actual yield is 15 g and the percent yield is 75%. The theoretical yield is:

A. 11.25 g
B. 15 g
C. 20 g ✓
D. 25 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

A student needs 5 g of a compound. The reaction to make it has a 50% yield. The student should start with enough reactants to theoretically produce:

A. 2.5 g
B. 5 g
C. 7.5 g
D. 10 g ✓
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

In the reaction Zn + S → ZnS, 65 g of Zn is supposed to make 97 g of ZnS. If the percent yield is 80%, the actual mass of ZnS produced is:

A. 97 g
B. 80 g
C. 77.6 g ✓
D. 121.25 g
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026

The theoretical yield of a reaction is 10 moles. If the percent yield is 65%, the moles of product actually obtained are:

A. 10 moles
B. 6.5 moles ✓
C. 15.4 moles
D. 65 moles
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nmdcat.online Chemistry NMDCAT MCQs
Jun 23, 2026
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