PAX PAX (NLN) 4

Question 1

A train travels 180 miles in 3 hours. At the same speed, how long will it take to travel 300 miles?

Accepted Answer

5 hours

Answer

Speed = 180/3 = 60 mph; time = 300/60 = 5 hours.

Question 2

Which blood type is considered the universal donor for red blood cells?

Accepted Answer

Type O negative

Answer

Type O negative blood lacks A, B, and Rh antigens, so it can be donated to anyone.

Question 3

Choose the word that best completes the sentence: 'The doctor remained _____ despite the chaotic emergency room.'

Accepted Answer

composed

Answer

'Composed' means calm and in control, which fits the contrast with a chaotic environment.

Question 4

What is the charge of a neutron?

Accepted Answer

Neutral

Answer

Neutrons carry no electrical charge; they are electrically neutral particles found in the nucleus.

Question 5

Simplify: 4(3x − 2) + 5x

Accepted Answer

17x − 8

Answer

Distribute: 12x − 8 + 5x = 17x − 8.

PAX Exam Practice Test