Q:

Which is the second most abundant metal in the earth's crust ?

A) Iron	B) Aluminium
C) Copper	D) Zinc

Answer & Explanation Answer: A) Iron

Explanation:

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Filed Under: World Geography

57 18491

Q:

Which solution is most concentrated?

A) 6 g of solute in 10 ml of solution	B) 20.5 g of solute in 50 ml of solution
C) 30 g of solute in 120 ml of solution	D) 2.6 g of solute in 2 ml of solution

Answer & Explanation Answer: D) 2.6 g of solute in 2 ml of solution

Explanation:

A concentrated solution will contain the most solute molecules per solvent molecules.

Here in the given options,

1) 6/10 = 0.6

2) 20.5/50 = 0.41

3) 30/120 = 0.25

4) 2.6/2 = 1.3

Hence, option D) is most concentrated.

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Filed Under: Chemistry
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21 18478

Q:

Dr. M.S.Subbalakshmi has distinguished herself in the field of

A) Kathak	B) Bharathanatyam
C) Playing Violin	D) Vocal Music

Answer & Explanation Answer: D) Vocal Music

Explanation:

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Filed Under: Famous Personalities

61 18463

Q:

Find the missing number in the following series:

43, 172, 86, 344, ?

A) 172	B) 258
C) 129	D) 430

Answer & Explanation Answer: A) 172

Explanation:

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Filed Under: Verbal Reasoning - Mental Ability

0 18449

Q:

Air pressure is usually highest when the air is

A) warm and moist	B) cool and dry
C) warm and dry	D) cool and moist

Answer & Explanation Answer: D) cool and moist

Explanation:

Both warmth and moisture reduce the density of air and hence its pressure is high.

Air_pressure_is_usually_highest_when_the_air_is1558073685.png image

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT
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90 18446

Q:

You can use the tab key to ________

A) move a cursor across the screen	B) indent a paragraph
C) move the cursor down the screen	D) both (a) and (b)

Answer & Explanation Answer: D) both (a) and (b)

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams

59 18413

Q:

What is the IUPAC name of [Co(NH3)4Cl2]?

A) Tetra-ammine dichloro cobalt (III) chloride	B) Tetra-ammine trichloro cobalt (III)
C) Tri-ammine dichloro cobalt (III) chloride	D) Tetra-ammine dichloro cobalt

Answer & Explanation Answer: A) Tetra-ammine dichloro cobalt (III) chloride

Explanation:

The IUPAC nomenclature in organic chemistry is a systematic method that is used to name organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

The IUPAC name of the given complex [Co (NH₃)₄Cl₂ ]Cl is - Tetra-ammine dichloro cobalt (III) chloride.

The complex [Co (NH₃)₄ Cl₂ ] Cl ionizes an aqueous solution to furnish the chloride ion Cl⁻ and [Co (NH₃)₄ Cl₂ ] ⁺.

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Filed Under: Chemistry
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18 18406

Q:

Padma Shri - Dr Sundaram (S) Ramakrishnan passed away recently. What was his profession?

A) Scientist	B) Politician
C) Engineer	D) Doctor

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