Chemistry for nursing entrance exams worksheet with answers

In a salt solution, what is the salt called?

1. AThe precipitate
2. BThe solute
3. CThe catalyst
4. DThe solvent

What is the SI unit of pressure?

1. ALitre (L)
2. BJoule (J)
3. CNewton (N)
4. DPascal (Pa)

Which three elements make up carbohydrates?

1. ACarbon, nitrogen and sulfur
2. BHydrogen, nitrogen and phosphorus
3. CCarbon, hydrogen and nitrogen
4. DCarbon, hydrogen and oxygen

A gas mixture contains nitrogen at 600 mmHg, oxygen at 150 mmHg and other gases at 10 mmHg. What is the total pressure?

1. A253 mmHg
2. B600 mmHg
3. C750 mmHg
4. D760 mmHg

When the diaphragm contracts and the chest cavity gets bigger, what happens to the air pressure inside the lungs?

1. AIt rises, so air flows in
2. BIt does not change
3. CIt falls, so air flows in
4. DIt falls, so air flows out

When a gas is heated in a rigid, sealed container, what happens to its pressure?

1. AIt stays the same
2. BIt drops to zero
3. CIt decreases
4. DIt increases

Which coefficients balance the equation for cellular respiration, __C₆H₁₂O₆ + __O₂ → __CO₂ + __H₂O?

1. A1, 3, 6, 6
2. B1, 6, 6, 6
3. C2, 6, 12, 6
4. D1, 6, 6, 12

Orange bromine water is shaken with two hydrocarbons. With hexene it turns colourless; with hexane it stays orange. What does this show?

1. ABoth contain double bonds, but hexane reacts more slowly
2. BHexene contains a C=C double bond; hexane does not
3. CHexane contains a C=C double bond; hexene does not
4. DHexene is an alcohol and hexane is an acid