Mini-EASE 2

The solubility of sugar in 10mL of water is 21.6g, while the solubility of salt in 100mL of water is 36g. Which one has the higher solubility?

• Sugar

• Salt

• They can't be compared

Which apparatus from below can be used to measure the volume of gas substance?

• Gas syringe

• Beaker

• Measuring cylinder

• Burette

This apparatus can be used to separate...

• Insoluble solid in liquid

• Immiscible liquid

• Solid mixtures

• Soluble solid in liquid

Take a look at the chromatogram below. The mobile phase used in that chromatography is water. Which dye has the highest solubility in water?

• Purple

• Blue

• Red

• Green

What is the R_f of the blue dye in the chromatogram below?

• 0.8

• 0.5

• 0.625

• 1.3

The diagram shows a section through part of the human eye. When a person looks at an object which is close to their eye, the suspensory ligaments will ... and the lens will become ...

• slacken; fatter

• slacken; thinner

• tighten; fatter

• tighten; thinner

The diagram shows the muscles which control the size of the pupil in an eye. To enlarge the pupil, the circular muscle will ... while the radial muscle will ...

• contract; contract

• contract; relax

• relax; contract

• relax; relax

After a meal, the concentration of blood glucose increases. What then causes the concentration of blood glucose to return to normal?

• Adrenalin

• Blood cells

• Insulin

• Platelets

A man injures his arm in an accident. Afterwards, he can feel objects touching his hand, but he cannot move his hand away from them.

What could cause this?

• Receptors in his hand are damaged

• The nerve connection between his hand receptor and his central nervous system is cut

• The nerve connection between his central nervous system and his arm effector is cut

• Both of his nerve connections are cut

At night, a man looks at the stars and then begins to read a map using a bright lamp.

How will his lenses and pupils change?

• Lenses = Fatter

  Pupils = Larger

• Lenses = Fatter

  Pupils = Smaller

• Lenses = Thinner

  Pupils = Larger

• Lenses = Thinner

  Pupils = Smaller