Химия для вступительных экзаменов на сестринские программы: лист заданий с ответами

What is the name of the polyatomic ion NH₄⁺?

1. ANitrate
2. BAmmonium
3. CAmmonia
4. DNitride

What kind of carbon–carbon bonds do alkanes contain?

1. AIonic bonds
2. BAt least one triple bond
3. CAt least one double bond
4. DOnly single bonds

What is the change from a gas directly to a solid, skipping the liquid state, called?

1. ASublimation
2. BCondensation
3. CDeposition
4. DFreezing

To which family of organic compounds does ethanol, C₂H₅OH, belong?

1. ACarboxylic acids
2. BAlcohols
3. CEsters
4. DAlkanes

Which assumption is made about an ideal gas?

1. AIts particles are large, closely packed and strongly attracted
2. BIts particles have no attraction to each other
3. CIts particles stay still at room temperature
4. DIts particles lose energy in every collision

Which bond joins amino acids together in a protein?

1. AA hydrogen bond
2. BAn ionic bond
3. CA peptide bond
4. DA glycosidic bond

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

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

Сколько атомов в одной молекуле глюкозы C₆H₁₂O₆?

1. A72
2. B18
3. C24
4. D3