Phiếu bài tập Hóa học cho kỳ thi đầu vào điều dưỡng có đáp án

Hạt nào trong nguyên tử mang điện tích dương?

1. ANeutron
2. BPhoton
3. CElectron
4. DProton

What is the SI unit of temperature?

1. AJoule
2. BKelvin
3. CDegree Fahrenheit
4. DDegree Celsius

What is the name for the attraction of water molecules to each other?

1. AOsmosis
2. BAdhesion
3. CCohesion
4. DDiffusion

Hòa tan 2 mol glucose trong nước để được 4 lít dung dịch. Nồng độ mol là bao nhiêu?

1. A8 M
2. B0,5 M
3. C4 M
4. D2 M

Rubbing alcohol evaporates faster than water at room temperature. What does this suggest?

1. AIt has a higher boiling point than water
2. BIts intermolecular forces are weaker than water's
3. CIts molecules are heavier than water molecules
4. DIts intermolecular forces are stronger than water's

How does a catalyst speed up a reaction?

1. AIt provides a different pathway with a lower activation energy
2. BIt raises the temperature of the reactants so they move faster
3. CIt makes the reaction more exothermic
4. DIt adds extra reactant to the mixture

A scuba diver breathes compressed air deep underwater. Why must the diver breathe out while swimming up to the surface?

1. AThe water gets warmer near the surface
2. BOxygen turns to liquid at the surface
3. CThe air in the lungs expands as the outside pressure falls
4. DThe air in the lungs shrinks as the outside pressure falls

Water is split as 2H₂O → 2H₂ + O₂. What volume of O₂ at STP (0 °C and 1 atm) forms from 2 mol of water?

1. A67,2 L
2. B44,8 L
3. C22,4 L
4. D11,2 L