Chemistry

Q661: The pH of mixture of CH₃COONa and CH₃COOH is _____?

A. 1
B. <7
C. 7
D. >7

Q662: When H^+ ion concentration of solution in 1 × 10^-8 pH of that solution will be _____?

A. 8
B. 10
C. 5
D. None of these

Q663: What is the oxidation number of nitrogen in the molecule N2?

A. None of these
B. 0
C. 5
D. 3

Q664: If a soap bubble is charged:

A. Its size decreases
B. No change
C. Its size increases
D. None of these

Q665: What is the value of 89.0°C on the Kelvin scale?

A. 251 K
B. -184 K
C. 362 K
D. None of these

Q666: Primary chemical composition of Marble included?

A. Calcite
B. Pyrite
C. Iron oxide
D. None of these

Q667: The principle by which blotting paper absorbs water is:

A. Root pressure
B. Absorptive capacity
C. Transpiration pull
D. Capillary action

Q668: _____ is not an organic addition reaction.

نامیاتی اضافے کا رد عمل نہیں ہے۔ ______

A. Dehydration
B. Hydration
C. Halogenation
D. None of these

Q669: The carbon atom carrying positive charge and attached to three other atoms or groups is called

A. Oxonium
B. Carbene
C. Carbocation
D. Carbanion

Q670: Which of the following molecule is inactive in the infrared spectrum?

اورکت اسپیکٹرم میں مندرجہ ذیل میں سے کون سا انو غیر فعال ہے؟

A. None of these
B. N₂
C. Benzene
D. CO₂

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Chemistry

Q661: The pH of mixture of CH₃COONa and CH₃COOH is _____?

Explanation

Q662: When H^+ ion concentration of solution in 1 × 10^-8 pH of that solution will be _____?

Explanation

Q663: What is the oxidation number of nitrogen in the molecule N2?

Explanation

Q664: If a soap bubble is charged:

Explanation

Q665: What is the value of 89.0°C on the Kelvin scale?

Explanation

Q666: Primary chemical composition of Marble included?

Explanation

Q667: The principle by which blotting paper absorbs water is:

Explanation

Q668: _____ is not an organic addition reaction.

Explanation

Q669: The carbon atom carrying positive charge and attached to three other atoms or groups is called

Explanation

Q670: Which of the following molecule is inactive in the infrared spectrum?

Explanation

Chemistry

Q661: The pH of mixture of CH₃COONa and CH₃COOH is _____?

Explanation

Q662: When H^+ ion concentration of solution in 1 × 10^-8 pH of that solution will be _____?

Explanation

Q663: What is the oxidation number of nitrogen in the molecule N2?

Explanation

Q664: If a soap bubble is charged:

Explanation

Q665: What is the value of 89.0°C on the Kelvin scale?

Explanation

Q666: Primary chemical composition of Marble included?

Explanation

Q667: The principle by which blotting paper absorbs water is:

Explanation

Q668: _____ is not an organic addition reaction.

Explanation

Q669: The carbon atom carrying positive charge and attached to three other atoms or groups is called

Explanation

Q670: Which of the following molecule is inactive in the infrared spectrum?

Explanation

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