Scheda di esercizi di Chimica per i test di ammissione a infermieristica con soluzioni

What range does the common pH scale cover?

1. A0 to 100
2. B1 to 10
3. C−7 to +7
4. D0 to 14

In a solution, what is the solvent?

1. AThe substance that does the dissolving, usually present in the larger amount
2. BThe gas given off when a solid dissolves
3. CThe substance that is dissolved, usually present in the smaller amount
4. DAny solid that will not dissolve, however long it is stirred

Che cosa sono gli isotopi?

1. AIoni che hanno acquistato elettroni
2. BAtomi dello stesso elemento con diverso numero di neutroni
3. CAtomi dello stesso elemento con diverso numero di protoni
4. DAtomi di elementi diversi con lo stesso numero di neutroni

A red blood cell is placed in a concentrated (hypertonic) salt solution. What happens?

1. AWater enters the cell, which swells and may burst
2. BSalt leaves the cell, which swells
3. CWater leaves the cell, which shrinks
4. DThe cell stays the same size and shape

What is 380 mmHg in atmospheres?

1. A2 atm
2. B0,5 atm
3. C0,38 atm
4. D380 atm

Which coefficients balance __Na + __Cl₂ → __NaCl?

1. A1, 1, 1
2. B2, 1, 2
3. C1, 2, 1
4. D2, 2, 1

A patient's temperature is 104 °F. What is it in degrees Celsius?

1. A72 °C
2. B43 °C
3. C58 °C
4. D40 °C

Why is incomplete combustion of fuel in a poorly ventilated room dangerous?

1. AIt produces water vapour, which is toxic
2. BIt produces carbon monoxide, which binds to haemoglobin and blocks oxygen transport
3. CIt produces extra oxygen, which damages the lining of the lungs over time
4. DIt produces nitrogen, which replaces oxygen in the blood