Lembar kerja Kimia untuk ujian masuk keperawatan dengan jawaban

Dalam larutan garam, apa sebutan untuk garamnya?

1. AEndapan
2. BKatalis
3. CPelarut
4. DZat terlarut

What is an acid–base indicator?

1. AA substance that changes colour depending on pH
2. BA device that measures temperature
3. CA gas given off by acids
4. DA substance that neutralises every acid

How many electrons are shared in a double covalent bond?

1. A4
2. B6
3. C8
4. D2

For the gas reaction N₂ + 3H₂ ⇌ 2NH₃, what is the effect of increasing the pressure?

1. AThere is no effect on the equilibrium
2. BThe equilibrium shifts to the right, toward NH₃
3. CThe NH₃ breaks down completely
4. DThe equilibrium shifts to the left, toward N₂ and H₂

At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?

1. A273 L
2. B1,0 L
3. C6,02 L
4. D22,4 L

A room is at 25 °C. What is this temperature in kelvin?

1. A248 K
2. B298 K
3. C77 K
4. D−248 K

Haemoglobin binds oxygen reversibly: Hb + O₂ ⇌ HbO₂. How does this equilibrium help deliver oxygen to tissues?

1. AThe equilibrium does not change anywhere in the body
2. BHigh O₂ in tissues shifts it to the left, absorbing oxygen
3. CLow O₂ in tissues shifts it to the left, releasing oxygen
4. DLow O₂ in tissues shifts it to the right, releasing oxygen

Which statement correctly distinguishes a scientific law from a scientific theory?

1. ALaws apply only to chemistry, theories only to biology
2. BA law describes what happens; a theory explains why it happens
3. CA theory becomes a law once it is proved
4. DA law is only a guess, while a theory is a proven fact