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

Plants absorb energy from sunlight during photosynthesis. How is photosynthesis classified?

1. ANeutralisation
2. BNuclear
3. CEndothermic
4. DExothermic

Which element has the symbol Fe?

1. AFrancium
2. BFluorine
3. CIron
4. DFermium

What is an electrolyte?

1. AA metal that conducts electricity as a solid
2. BA substance that dissolves as whole molecules without forming any ions
3. CA gas that dissolves in blood
4. DA substance that forms ions and conducts electricity when dissolved in water

Nhiệt độ cao hơn thường ảnh hưởng thế nào đến lượng chất rắn hòa tan trong nước?

1. AHòa tan được ít chất rắn hơn
2. BChất rắn biến thành chất khí
3. CHòa tan được nhiều chất rắn hơn
4. DKhông ảnh hưởng đến chất rắn

Magnesium forms Mg²⁺ ions and oxygen forms O²⁻ ions. What is the formula of magnesium oxide?

1. AMgO₂
2. BMg₂O
3. CMgO
4. DMg₂O₂

Which list is in order from smallest to largest mass?

1. AGram, milligram, kilogram
2. BMilligram, kilogram, gram
3. CMilligram, gram, kilogram
4. DKilogram, gram, milligram

Half-normal saline (0,45% NaCl) is compared with blood plasma, which has about the same concentration as 0,9% NaCl. How is 0,45% NaCl described, and what happens to red blood cells placed in it?

1. AHypertonic; salt moves into the cells, which then swell
2. BIsotonic; water moves equally in and out, so the cells keep their shape
3. CHypertonic; water tends to move out of the cells, which shrink
4. DHypotonic; water tends to move into the cells, which swell

A solution contains 250 mg of a substance in every 5 mL. How many grams of the substance are in 100 mL?

1. A50 g
2. B5000 g
3. C0,5 g
4. D5 g