107
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:   B) Option 2



Explanation:

Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed. 

Subject: Chemistry
Exam Prep: AIEEE
Q:

The maximum number of electrons that can be accommodated in a shell depends on the formula

 

A) 1n2 B) n2
C) 3n2 D) 2n2
 
Answer & Explanation Answer: D) 2n2

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13 88468
Q:

Which of the following solutions is the most acidic among them all?

A) Solution with pH value 0 B) Solution with pH value 6
C) Solution with pH value 1 D) Solution with pH value 7
 
Answer & Explanation Answer: A) Solution with pH value 0

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0 597
Q:

Which of the following metals displaces Iron from Iron Chloride?

A) Lead B) Zinc
C) Tin D) Silver
 
Answer & Explanation Answer: B) Zinc

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1 734
Q:

The formula C6H14 represents the hydrocarbon ___.

 

A) Hexene B) Heptyne
C) Hexane D) Hexyne
 
Answer & Explanation Answer: C) Hexane

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0 8671
Q:

The number of valence electrons in an atom of Phosphorous is

A) 4 B) 3
C) 2 D) 5
 
Answer & Explanation Answer: D) 5

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0 675
Q:

Curd contains mainly ___ acid.

A) Benzoic B) Fumaric
C) Lactic D) Malic
 
Answer & Explanation Answer: C) Lactic

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2 645
Q:

___ is used in yellow lamp street lights.

A) Neon B) Nitrogen
C) Phosphorous D) Sodium
 
Answer & Explanation Answer: D) Sodium

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0 548
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

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2 8877