TEAS 7 Free Diagnostic

What is covered

• TEAS 7 Diagnostic Mini-Test

  4 questions · Untimed · Science

4 sample questions, free

Real questions from this exam, with the explanation for every option — including the ones you would not pick.

1. Science

   Which organ system is primarily responsible for gas exchange?

   • Respiratory system

     Correct. Gas exchange happens across the alveolar membrane, where oxygen diffuses into the blood and carbon dioxide diffuses out.

   • Digestive system

     The digestive system breaks down food and absorbs nutrients; it plays no part in gas exchange.

   • Endocrine system

     The endocrine system regulates the body through hormones, including breathing rate indirectly, but does not itself exchange gases.

   • Lymphatic system

     The lymphatic system returns interstitial fluid to the blood and supports immunity; it moves fluid, not gases.

   Show answer & explanations

2. Mathematics

   What is 15% of 240?

   • 36

     Correct. 10% of 240 is 24, and 5% is half of that, 12. 24 + 12 = 36. Splitting a percentage into 10% and 5% chunks is faster and more reliable than reaching for a formula.

   • 30

     This is 12.5% of 240. A common slip when estimating rather than calculating.

   • 3.6

     This is 1.5% — a decimal place lost during the conversion from percentage.

   • 360

     This multiplies by 1.5 rather than 0.15, giving a result larger than the original number.

   Show answer & explanations

3. English and Language Usage

   Choose the sentence with correct subject–verb agreement.

   • The box of supplies is on the counter.

     Correct. The subject is "box", which is singular. "Of supplies" is a prepositional phrase and never contains the subject — mentally delete it and the agreement becomes obvious.

   • The box of supplies are on the counter.

     This agrees with "supplies" inside the prepositional phrase instead of with the true subject, "box".

   • The boxes of supplies is on the counter.

     The subject "boxes" is plural, so it requires "are".

   • The box of supply are on the counter.

     Both the agreement and the noun number are wrong here.

   Show answer & explanations

4. Reading

   Read the sentence: "The results were inconclusive." The word "inconclusive" most nearly means —

   • not leading to a definite result

     Correct. The prefix in- negates, and "conclusive" means settling a question — so inconclusive means the question was not settled.

   • clearly negative

     Inconclusive means no clear finding either way, not a clear finding in the negative direction. This distinction matters when reading research.

   • repeated several times

     Nothing in the word relates to repetition.

   • statistically significant

     Close to the opposite — significance implies a definite result.

   Show answer & explanations