Questions

Q:

One who cannot die -

 

 

A) Immortal B) Perpetual
C) Stable D) Perennial
 
Answer & Explanation Answer: A) Immortal

Explanation:
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Q:

Which pair of atoms has the highest electronegativity difference?

 

(Calcium's electronegativity is 1.0

Fluorine's electronegativity is 4.0

Hydrogen's electronegativity is 2.2

Sodium's electronegativity is 0.93)

A) F-F B) Ca-F
C) H-F D) Na-F
 
Answer & Explanation Answer: D) Na-F

Explanation:

F-F = 4 - 4 = 0

Ca-F = 4 - 1 = 3.0

H-F = 4 - 2.2 = 1.8

Na-F = 4 - 0.93 = 3.07

 

Hence, the highest electronegativity difference is in Na-F.

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Q:

Select the antonym of

 

cameo

 

A) trinket B) gem
C) bauble D) plain
 
Answer & Explanation Answer: D) plain

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Q:

Boron cannot form which one of the following anions?

(1) BO2-

(2) BF63-

(3) BH4-

(4) B(OH)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, sp3d2hybridization is not possible hence BF63-will not formed. 

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Q:

Select the antonym of

void

 

A) destitute B) scant
C) bereft D) adequate
 
Answer & Explanation Answer: D) adequate

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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:

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:

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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