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:

What is the net charge on Calcium fluoride?

A) 1+ B) 0
C) 1­- D) 2­-
 
Answer & Explanation Answer: B) 0

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0 949
Q:

Atomic Number of Hydrogen is _______.

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

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2 893
Q:

The common name of sulphur is

A) Freon B) galena
C) lime D) brimstone
 
Answer & Explanation Answer: D) brimstone

Explanation:
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1 1279
Q:

Which of the following elements has the lowest melting point?

A) Titanium B) Tungsten
C) Argon D) Nickel
 
Answer & Explanation Answer: C) Argon

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0 916
Q:

Ozone is represented as _____.

A) O3 B) H2O2
C) Cl2O D) N2O
 
Answer & Explanation Answer: A) O3

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1 941
Q:

The residual attractive or repulsive forces between molecules or atomic groups that do not arise from a covalent bond, or ionic bonds is called _____

A) Neutral Bond B) Non Polar Bond
C) Electro Valence bond D) Van der Walls bond
 
Answer & Explanation Answer: D) Van der Walls bond

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0 1137
Q:

The Chemical formula of Ammonium dichromate is _____.

A) (NHF4)2Cr2O7 B) (NH4)CrO3
C) (NH4)Cr2O3 D) (NH4)2Cr2O3
 
Answer & Explanation Answer: A) (NHF4)2Cr2O7

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0 1061
Q:

The common name of sodium tetraborate decahydrate is _____.

A) epsom salt B) gypsum
C) Borax D) galena
 
Answer & Explanation Answer: C) Borax

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0 1046