Q:

Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Answer & Explanation Answer: B) Option 2

Explanation:

Due to absence of low lying vacant d orbital in B, $s p^{3} d^{2}$ hybridization is not possible hence $B F_{6}^{3 -}$ will not formed.

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Q:

'One who possesses many talents'

One word substitute for the given word is?

A) Exceptional	B) Wisdom
C) Versatile	D) Nubile

Answer & Explanation Answer: C) Versatile

Explanation:

A person, One who possesses many talents is called a Versatile.

It means multiskilled, adaptable, flexible, ...

versatile1533106888.png image

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Q:

What is the standard room temperature in Kelvin?

A) 98 K	B) 198 K
C) 273 K	D) 373 K

Answer & Explanation Answer: A) 98 K

Explanation:

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Filed Under: Physics
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Q:

Which are the special proteins in muscles that contract and relax to cause movement?

A) Contractile protein	B) Receptor protein
C) Structural protein	D) Enzymatic protein

Answer & Explanation Answer: A) Contractile protein

Explanation:

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Q:

Select the antonym of

cameo

A) trinket	B) gem
C) bauble	D) plain

Answer & Explanation Answer: D) plain

Explanation:

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Filed Under: English
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Q:

The wind is variable today.

Synonym of the word in bold?

A) mild	B) Shifting
C) Steady	D) Chilling

Answer & Explanation Answer: B) Shifting

Explanation:

Variable means changes or shifts timely. Hence, synonym of variable is shifting.

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Q:

Improve the bracketed part of the sentence.

The pet has just finished its meal (and is satisfied now).

A) now and was satisfied	B) now and is satisfied
C) then and is satisfied	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Q:

Select the antonym of

void

A) destitute	B) scant
C) bereft	D) adequate

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