Q:

Which solution has the highest pH?

A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)	B) 50.0 mL 0.0500 M sodium hydroxide, NaOH (aq)
C) 50.0 mL 0.0500 M nitric acid, HNO3 (aq)	D) 50.0 mL 0.0500 M nitrous acid, HNO2 (aq)

Answer & Explanation Answer: A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)

Explanation:

50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) has the highest pH value.

Sodium hydroxide and Calcium hydroxide are strong bases so they completely ionize in solution. Because they ionize at the same rate, and Calcium hydroxide has the higher pH calculated, then Calcium hydroxide, in fact, has the highest pH.

Nitric acid is a strong acid, so it completely ionizes in water. Whilst nitrous acid is a weak acid. Therefore, the nitric acid solution has the LOWEST ph.

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8 8208

Q:

Metals are generally ______.

I. Ductile

II. Malleable

III. Poor conductors of heat

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: A) Only I and II

Explanation:

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1 8206

Q:

Dronacharya Award Is Given To

A) Sports Editors	B) Umpires
C) Sportsmen	D) Coaches

Answer & Explanation Answer: D) Coaches

Explanation:

The Dronacharya Award, formally known as Dronacharya Award for Outstanding Coaches in Sports and Games, is sports training honour of the Republic of India. The award is named after Drona, often referred as "Dronacharya" or "Guru Drona", a character from the Sanskrit epic Mahabharata of ancient India.

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15 8203

Q:

The highest mountain peak of Chhotanagpur Plateau is ________.

A) Dhoopgarh	B) Pachmarhi
C) Parasnath	D) Parasnath

Answer & Explanation Answer: C) Parasnath

Explanation:

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1 8200

Q:

Which metal pollute the air of a big city?

A) Chromium	B) Lead
C) Copper	D) Zinc

Answer & Explanation Answer: B) Lead

Explanation:

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12 8197

Q:

In archery, what shape is the target

A) Squar	B) Round
C) Triangular	D) Rectangular

Answer & Explanation Answer: B) Round

Explanation:

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17 8187

Q:

Number of satellites launched by the ISRO using its PSLV- C51 rocket -

A) 19	B) 11
C) 15	D) 13

Answer & Explanation Answer: A) 19

Explanation:

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0 8183

Q:

why 8085 processor, is called an 8 bit processor?

Answer

Because 8085 processor is 8 bit ALU (arithmetic logic review). Similarly 8086 processor has 16 bit ALU.

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