Lembaran kerja Kimia untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is gamma radiation?

1. AHigh-energy electromagnetic radiation with no mass or charge
2. BA stream of helium nuclei with a positive charge
3. CA slow-moving electron
4. DA fast stream of protons from the nucleus

A blown-up balloon is put in a freezer. What happens to its volume?

1. AIt increases
2. BThe balloon bursts
3. CIt stays exactly the same
4. DIt decreases

What is the SI unit of temperature?

1. ADegree Celsius
2. BKelvin
3. CJoule
4. DDegree Fahrenheit

Pernyataan manakah tentang unsur dalam kumpulan yang sama adalah betul?

1. AIa sentiasa semuanya gas pada suhu bilik
2. BIa mempunyai bilangan petala elektron yang sama tetapi sifat yang berbeza
3. CIa mempunyai bilangan elektron valens yang sama dan sifat kimia yang serupa
4. DIa mempunyai jisim atom yang sama dan bilangan proton yang sama

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

1. A298 K
2. B248 K
3. C77 K
4. D−248 K

What is the oxidation number of oxygen in most of its compounds?

1. A+2
2. B0
3. C−1
4. D−2

Olive oil is liquid at room temperature, while butter is solid. Which explanation is correct?

1. AOlive oil has more C=C double bonds, which kink the chains so they cannot pack closely
2. BOlive oil has no C=C double bonds, so its chains stay straight and pack tightly
3. COlive oil molecules are ionic, while butter molecules are covalent
4. DButter contains more water, which freezes at room temperature

For N₂ + 3H₂ → 2NH₃, 1 mol of N₂ is mixed with 2 mol of H₂. Which reactant is limiting?

1. ANeither, because both are used up exactly
2. BN₂, because there is less of it
3. CNH₃, because it is the product
4. DH₂, because 1 mol of N₂ would need 3 mol of H₂