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

Which element makes up the largest share of the human body by mass?

1. AOxygen
2. BHydrogen
3. CNitrogen
4. DCarbon

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

1. ASublimation
2. BDeposition
3. CCondensation
4. DFreezing

Which acid is found in the stomach?

1. AAcetic acid
2. BSulfuric acid
3. CNitric acid
4. DHydrochloric acid

Why can a very high fever disrupt the body's chemical reactions?

1. AHigh temperatures turn enzymes into fats
2. BHigh temperatures make every enzyme work faster without any limit
3. CHigh temperatures can change the shape of enzymes so they stop working
4. DHigh temperatures remove the water from blood

Why does ice float on liquid water?

1. AIce is less dense than liquid water
2. BIce has a higher mass than the same volume of water
3. CIce contains trapped air from the freezer
4. DIce is denser than liquid water

When the diaphragm contracts and the chest cavity gets bigger, what happens to the air pressure inside the lungs?

1. AIt falls, so air flows in
2. BIt does not change
3. CIt falls, so air flows out
4. DIt rises, so air flows in

An element has the electron arrangement 2, 8, 8, 2. Where is it on the periodic table?

1. AGroup 8, period 2
2. BGroup 2, period 2
3. CGroup 2, period 4
4. DGroup 4, period 2

A reaction at equilibrium has a very large equilibrium constant (K much greater than 1). What does this tell you?

1. AThe reaction cannot reach equilibrium
2. BAt equilibrium, the mixture contains mostly products
3. CAt equilibrium, the mixture contains mostly reactants
4. DThe reaction is very fast