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Question (21)

QN006532

If 25 g salt is dissolved in 225 g water, the % m/m concentration is:

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

Correct Answer: B

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Question (22)

QN006533

18 g glucose is dissolved to prepare 450 mL solution. The concentration is:

(A) 2% m/v
(B) 3% m/v
(C) 4% m/v
(D) 5% m/v

Correct Answer: C

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Question (23)

QN006534

A perfume contains 8 mL fragrant oil in 200 mL solution. The concentration is:

(A) 2% v/v
(B) 4% v/v
(C) 6% v/v
(D) 8% v/v

Correct Answer: B

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Question (24)

QN006535

Which concentration unit is commonly used in packaged foods like milk powder?

(A) % m/m
(B) % v/v
(C) ppm
(D) molarity

Correct Answer: A

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Question (25)

QN006536

Which concentration expression is generally used for medicines like glucose solution?

(A) % v/v
(B) % m/m
(C) % m/v
(D) ppm

Correct Answer: C

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Question (26)

QN006537

A student dissolves 9 g salt in 291 g water. Find concentration by mass.

(A) 1%
(B) 2%
(C) 3%
(D) 4%

Correct Answer: C

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Question (27)

QN006538

30 mL orange concentrate is mixed to prepare 150 mL juice. The % v/v concentration is:

(A) 10%
(B) 15%
(C) 20%
(D) 25%

Correct Answer: C

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Question (28)

QN006539

Which statement correctly defines solubility?

(A) Amount of solvent in 100 g solution
(B) Maximum amount of solute dissolved in fixed amount of solvent at given temperature
(C) Total mass of solution
(D) Amount of residue after filtration

Correct Answer: B

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Question (29)

QN006540

A solution containing very small amount of solute is called:

(A) Saturated
(B) Concentrated
(C) Dilute
(D) Supersaturated

Correct Answer: C

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Question (30)

QN006541

Which of the following solutions is likely to be most concentrated?

(A) 5 g sugar in 200 g water
(B) 10 g sugar in 200 g water
(C) 20 g sugar in 200 g water
(D) 2 g sugar in 200 g water

Correct Answer: C

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Question (21)

If 25 g salt is dissolved in 225 g water, the % m/m concentration is:

Explanation:

Link:

Question (22)

18 g glucose is dissolved to prepare 450 mL solution. The concentration is:

Explanation:

Link:

Question (23)

A perfume contains 8 mL fragrant oil in 200 mL solution. The concentration is:

Explanation:

Link:

Question (24)

Which concentration unit is commonly used in packaged foods like milk powder?

Explanation:

Link:

Question (25)

Which concentration expression is generally used for medicines like glucose solution?

Explanation:

Link:

Question (26)

A student dissolves 9 g salt in 291 g water. Find concentration by mass.

Explanation:

Link:

Question (27)

30 mL orange concentrate is mixed to prepare 150 mL juice. The % v/v concentration is:

Explanation:

Link:

Question (28)

Which statement correctly defines solubility?

Explanation:

Link:

Question (29)

A solution containing very small amount of solute is called:

Explanation:

Link:

Question (30)

Which of the following solutions is likely to be most concentrated?

Explanation:

Link:

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