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Question (31)

QN0029046

If 100 mL water dissolves a maximum of 40 g sugar at a given temperature, what will happen when 45 g sugar is added?

(A) All will dissolve
(B) 5 g remains undissolved
(C) Water disappears
(D) Sugar changes into water

Correct Answer: B

Explanation:

Only 40 g can dissolve; 5 g remains undissolved.

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Question (32)

QN0029047

Which pair correctly identifies solute and solvent in sugar syrup?

(A) Water—solute, Sugar—solvent
(B) Sugar—solute, Water—solvent
(C) Both are solvents
(D) Both are solutes

Correct Answer: B

Explanation:

Sugar dissolves in water.

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Question (33)

QN0029048

A solution contains 6 g salt in 30 mL water. Another contains 18 g salt in 120 mL water. Which is more concentrated?

(A) First
(B) Second
(C) Equal
(D) Cannot be determined

Correct Answer: A

Explanation:

6/30 = 0.2 and 18/120 = 0.15. First is more concentrated.

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Question (34)

QN0029049

A student mixes 25 mL liquid P and 75 mL liquid Q to form a solution. Which statement is correct?

(A) P is solvent
(B) Q is solute
(C) P is solute and Q is solvent
(D) Both are solutes

Correct Answer: C

Explanation:

Smaller quantity is solute and larger quantity is solvent.

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Question (35)

QN0029050

Which of the following demonstrates the concept of concentration most directly?

(A) Colour of the beaker
(B) Amount of solute present in a fixed quantity of solution
(C) Shape of the container
(D) Temperature of the room only

Correct Answer: B

Explanation:

Concentration depends on solute amount in a fixed quantity of solution.

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Question (36)

QN0029051

Solution M contains 14 g solute in 70 mL solvent, while Solution N contains 21 g solute in 140 mL solvent. Which is more concentrated?

(A) M
(B) N
(C) Equal
(D) Cannot be compared

Correct Answer: A

Explanation:

14/70 = 0.2 and 21/140 = 0.15. M is more concentrated.

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Question (37)

QN0029052

A student wants the most dilute solution among the following. Which should be selected?

(A) 10 g sugar in 50 mL water
(B) 10 g sugar in 100 mL water
(C) 10 g sugar in 200 mL water
(D) 10 g sugar in 25 mL water

Correct Answer: C

Explanation:

Same solute in maximum water gives the most dilute solution.

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Question (38)

QN0029053

Which observation confirms that a uniform mixture has formed?

(A) Components settle quickly.
(B) Components are evenly distributed throughout.
(C) Large particles float separately.
(D) Layers are visible.

Correct Answer: B

Explanation:

Uniform distribution indicates a solution.

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Question (39)

QN0029054

A solution contains 32 g solute in 160 mL solvent. Another contains 18 g solute in 90 mL solvent. Compare their concentrations.

(A) First is greater
(B) Second is greater
(C) Both are equal
(D) Cannot be compared

Correct Answer: C

Explanation:

32/160 = 0.2 and 18/90 = 0.2. Both have equal concentration.

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Question (31)

If 100 mL water dissolves a maximum of 40 g sugar at a given temperature, what will happen when 45 g sugar is added?

Explanation:

Link:

Question (32)

Which pair correctly identifies solute and solvent in sugar syrup?

Explanation:

Link:

Question (33)

A solution contains 6 g salt in 30 mL water. Another contains 18 g salt in 120 mL water. Which is more concentrated?

Explanation:

Link:

Question (34)

A student mixes 25 mL liquid P and 75 mL liquid Q to form a solution. Which statement is correct?

Explanation:

Link:

Question (35)

Which of the following demonstrates the concept of concentration most directly?

Explanation:

Link:

Question (36)

Solution M contains 14 g solute in 70 mL solvent, while Solution N contains 21 g solute in 140 mL solvent. Which is more concentrated?

Explanation:

Link:

Question (37)

A student wants the most dilute solution among the following. Which should be selected?

Explanation:

Link:

Question (38)

Which observation confirms that a uniform mixture has formed?

Explanation:

Link:

Question (39)

A solution contains 32 g solute in 160 mL solvent. Another contains 18 g solute in 90 mL solvent. Compare their concentrations.

Explanation:

Link:

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