Q:

Which compound forms a colored aqueous solution?

A) CrCl3	B) KBr
C) CaCl2	D) NaOH

Answer & Explanation Answer: A) CrCl3

Explanation:

Colored aqueous solutions are a characteristic of transition compounds.

The only transition compound in the above choices is CrCl3.

Cr is a transition element.

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Q:

Apart from proposing atomic theory, what did John Dalton researched on?

A) Plants	B) Colour blindness
C) Penicillin	D) Plastic

Answer & Explanation Answer: B) Colour blindness

Explanation:

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Q:

Select the synonym of

repentance

A) intransigent	B) obdurate
C) resolute	D) remorse

Answer & Explanation Answer: D) remorse

Explanation:

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Q:

Select the antonym of

bequeath

A) receive	B) impart
C) bestow	D) entrust

Answer & Explanation Answer: A) receive

Explanation:

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Q:

Which of the following is an example of compound?

A) Manganese	B) Air
C) Ozone	D) Ammonia gas

Answer & Explanation Answer: D) Ammonia gas

Explanation:

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Q:

When you travel in certain parts of India, you will notice red soil. What is the main reason for this colour?

A) Abundance of magnesium	B) Accumulated humus
C) Presence of ferric oxides	D) Abundance of Phosphates

Answer & Explanation Answer: C) Presence of ferric oxides

Explanation:

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Q:

Who invented fuel cells in 1839?

A) Buckminster Fuller	B) Sir William Grove
C) Sylvester Graham	D) Joyce Hall

Answer & Explanation Answer: B) Sir William Grove

Explanation:

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Q:

Solve this logical Math puzzle?

logical_thinking_puzzle1536132282.jpg image

Answer

Let that something be 'x'

From the given data,

x + x/5 = 21

5x + x/5 = 21

6x = 21 x 5

=> x = 17.5

Hence, that something is x = 17.5.

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