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Question (31)

QN007441

Ionic compounds usually remain solid at room temperature because:

(A) Ions are weakly bonded
(B) Strong ionic bonds hold ions firmly
(C) Molecules move rapidly
(D) They contain free neutrons

Correct Answer: B

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Question (32)

QN007442

Which solution will not conduct electricity?

(A) Sodium chloride solution
(B) Copper sulfate solution
(C) Sugar solution
(D) Potassium chloride solution

Correct Answer: C

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Question (33)

QN007443

The boiling point of ionic compounds is generally:

(A) Very low
(B) Moderate
(C) High
(D) Zero

Correct Answer: C

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Question (34)

QN007444

Which property is common in most covalent compounds?

(A) High conductivity
(B) Low melting point
(C) Presence of ions
(D) Solubility in water

Correct Answer: B

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Question (35)

QN007445

Which compound conducts electricity due to free ions in solution?

(A) Ethanol
(B) Glucose
(C) Sodium chloride
(D) Benzene

Correct Answer: C

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Question (36)

QN007446

The inability of solid ionic compounds to conduct electricity is due to:

(A) Absence of ions
(B) Fixed position of ions
(C) Absence of atoms
(D) Presence of molecules only

Correct Answer: B

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Question (37)

QN007447

Which of the following has strongest intermolecular attraction?

(A) Methane
(B) Oxygen
(C) Sodium chloride
(D) Carbon dioxide

Correct Answer: C

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Question (38)

QN007448

Covalent compounds are generally formed between:

(A) Metals only
(B) Non-metals only
(C) Metals and acids
(D) Metals and bases only

Correct Answer: B

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Question (39)

QN007449

Which compound is expected to have highest melting point?

(A) H₂
(B) CH₄
(C) NaCl
(D) CO₂

Correct Answer: C

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Question (40)

QN007450

Ionic compounds dissolve in water mainly because:

(A) Water is covalent
(B) Water molecules attract ions
(C) Water produces electrons
(D) Water breaks atoms

Correct Answer: B

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Question (31)

Ionic compounds usually remain solid at room temperature because:

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Question (32)

Which solution will not conduct electricity?

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Question (33)

The boiling point of ionic compounds is generally:

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Question (34)

Which property is common in most covalent compounds?

Explanation:

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Question (35)

Which compound conducts electricity due to free ions in solution?

Explanation:

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Question (36)

The inability of solid ionic compounds to conduct electricity is due to:

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Question (37)

Which of the following has strongest intermolecular attraction?

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Question (38)

Covalent compounds are generally formed between:

Explanation:

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Question (39)

Which compound is expected to have highest melting point?

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Question (40)

Ionic compounds dissolve in water mainly because:

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