106
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:

Pick the odd one out from the following:

A) NaOH B) Cu(OH)2
C) NH4OH D) Zn(OH)2
 
Answer & Explanation Answer: A) NaOH

Explanation:
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1 720
Q:

Which category of Hydrogen releases water vapour and a by product when burnt?

 

A) Green Hydrogen B) Blue Hydrogen
C) Red Hydrogen D) Black Hydrogen
 
Answer & Explanation Answer: A) Green Hydrogen

Explanation:
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2 3809
Q:

When milk becomes sour, ___ is produced.

A) Lactose B) Lactic acid
C) Salicylic acid D) Linoleic acid
 
Answer & Explanation Answer: B) Lactic acid

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4 626
Q:

What is the common name of the solution of calcium hydroxide?

A) Lime water B) Diet soda
C) Salt solution D) Vinegar
 
Answer & Explanation Answer: A) Lime water

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1 800
Q:

_______contributes towards global warming so it is called a greenhouse gas.

 

A) Oxygen B) Nitrogen
C) Hydrogen D) Methane
 
Answer & Explanation Answer: D) Methane

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3 3757
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

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0 9172
Q:

Which of the following group does NOT follow Newlands Law of Octaves?

 

A) Li, Na B) Be, Mg  
C) C, Si   D) Mn, Hg
 
Answer & Explanation Answer: D) Mn, Hg

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0 4153
Q:

The hardest natural substance is

A) Graphite B) Diamond
C) Iron D) Copper
 
Answer & Explanation Answer: B) Diamond

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2 645