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Question (21)

QN0029036

In a mixture of 20 mL liquid A and 80 mL liquid B, liquid B is the:

(A) solute
(B) solvent
(C) solution
(D) residue

Correct Answer: B

Explanation:

The larger quantity acts as the solvent.

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Question (22)

QN0029037

A solution contains 30 g sugar in 150 mL water. Another contains 18 g sugar in 60 mL water. Which has greater concentration?

(A) First
(B) Second
(C) Both equal
(D) Cannot be determined

Correct Answer: B

Explanation:

30/150 = 0.2 and 18/60 = 0.3. Second is greater.

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Question (23)

QN0029038

A student adds solute continuously. The amount dissolved becomes 5 g, 10 g, 15 g and finally reaches a maximum of 20 g. Which amount represents saturation?

(A) 5 g
(B) 10 g
(C) 15 g
(D) 20 g

Correct Answer: D

Explanation:

Saturation occurs at the maximum dissolved amount.

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Question (24)

QN0029039

Which statement about a saturated solution is correct?

(A) It contains no solute.
(B) More solute can dissolve easily.
(C) It cannot dissolve more solute at that temperature.
(D) It is always dilute.

Correct Answer: C

Explanation:

A saturated solution cannot dissolve additional solute at that temperature.

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Question (25)

QN0029040

Two solutions are prepared. Solution X has 16 g solute in 80 mL solvent. Solution Y has 24 g solute in 160 mL solvent. Which is more concentrated?

(A) X
(B) Y
(C) Both same
(D) Cannot be compared

Correct Answer: A

Explanation:

16/80 = 0.2 and 24/160 = 0.15. X is more concentrated.

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Question (26)

QN0029041

A solution contains 12 teaspoons sugar in 300 mL water. Another contains 9 teaspoons sugar in 150 mL water. Which is more concentrated?

(A) First
(B) Second
(C) Both equal
(D) None

Correct Answer: B

Explanation:

12/300 = 0.04 and 9/150 = 0.06. Second is more concentrated.

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Question (27)

QN0029042

Which situation best represents an unsaturated solution?

(A) Solute settles at the bottom.
(B) No more solute dissolves.
(C) Additional solute can still dissolve.
(D) Solvent evaporates completely.

Correct Answer: C

Explanation:

More solute can dissolve in an unsaturated solution.

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Question (28)

QN0029043

A solution contains 24 g solute in 120 mL solvent. If the solvent amount is doubled while solute remains same, the new solution becomes:

(A) more concentrated
(B) equally concentrated
(C) less concentrated
(D) saturated

Correct Answer: C

Explanation:

Increasing solvent reduces concentration.

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Question (29)

QN0029044

A chemist prepares Solution A using 30 g salt in 150 mL water and Solution B using 50 g salt in 200 mL water. Which is more concentrated?

(A) A
(B) B
(C) Both same
(D) Cannot be compared

Correct Answer: B

Explanation:

30/150 = 0.2 and 50/200 = 0.25. B is more concentrated.

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Question (30)

QN0029045

A mixture of gases in air is considered a solution because the gases are:

(A) visible separately
(B) evenly distributed
(C) insoluble
(D) heavy

Correct Answer: B

Explanation:

Air is a uniform mixture of gases.

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Question (21)

In a mixture of 20 mL liquid A and 80 mL liquid B, liquid B is the:

Explanation:

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Question (22)

A solution contains 30 g sugar in 150 mL water. Another contains 18 g sugar in 60 mL water. Which has greater concentration?

Explanation:

Link:

Question (23)

A student adds solute continuously. The amount dissolved becomes 5 g, 10 g, 15 g and finally reaches a maximum of 20 g. Which amount represents saturation?

Explanation:

Link:

Question (24)

Which statement about a saturated solution is correct?

Explanation:

Link:

Question (25)

Two solutions are prepared. Solution X has 16 g solute in 80 mL solvent. Solution Y has 24 g solute in 160 mL solvent. Which is more concentrated?

Explanation:

Link:

Question (26)

A solution contains 12 teaspoons sugar in 300 mL water. Another contains 9 teaspoons sugar in 150 mL water. Which is more concentrated?

Explanation:

Link:

Question (27)

Which situation best represents an unsaturated solution?

Explanation:

Link:

Question (28)

A solution contains 24 g solute in 120 mL solvent. If the solvent amount is doubled while solute remains same, the new solution becomes:

Explanation:

Link:

Question (29)

A chemist prepares Solution A using 30 g salt in 150 mL water and Solution B using 50 g salt in 200 mL water. Which is more concentrated?

Explanation:

Link:

Question (30)

A mixture of gases in air is considered a solution because the gases are:

Explanation:

Link:

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