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:

Milk of Magnesia is used as a 

 

A) Laxative  B) Pain killer 
C) Sedative  D) Antibiotic
 
Answer & Explanation Answer: A) Laxative 

Explanation:
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0 11792
Q:

What is the process of slow cooling of hot glass called?

A) Annealing B) Humidifying
C) Condensation D) Decantation
 
Answer & Explanation Answer: A) Annealing

Explanation:
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4 725
Q:

When two liquids do not mix with each other to form a solution, what is it called?

A) Solvent B) Solute
C) Immiscible D) Decantation
 
Answer & Explanation Answer: C) Immiscible

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1 771
Q:

Which of the following is used in making perfumes as well as flavouring agents?

 

A) Esters B) Ethanol
C) Methanol D) Ethanoic acid
 
Answer & Explanation Answer: A) Esters

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4 5346
Q:

An element has an atomic weight of W and an atomic number of N. The number of protons in the nucleus of its atom is

 

A) N B) W
C) W + N D) W - N
 
Answer & Explanation Answer: A) N

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3 635
Q:

Which of the following elements has a total of 3 shells with 8 electrons in the last orbit?

A) Ar B) P
C) S D) Al
 
Answer & Explanation Answer: A) Ar

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1 802
Q:

Common salt (NaCl) is made up of

A) a weak acid and a weak base B) a strong acid and a weak base
C) a weak acid and a strong base D) a strong acid and a strong base
 
Answer & Explanation Answer: D) a strong acid and a strong base

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2 757
Q:

The tenth element in the Newland's periodic classification resembles the

A) Fourth B) Ninth
C) First D) Third
 
Answer & Explanation Answer: D) Third

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3 896