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:

Which among the following has lowest electron affinity?

A) Fluorine B) Chlorine
C) Bromine D) Argon
 
Answer & Explanation Answer: D) Argon

Explanation:
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1 1401
Q:

The common name of hydrogen peroxide is

A) borax B) bleach (liquid)
C) baking soda D) gypsum
 
Answer & Explanation Answer: B) bleach (liquid)

Explanation:
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0 1129
Q:

The Chemical formula of Cadmium nitrate is _____.

A) Cd(NO3)2 B) CdNO3
C) Cd2(NO3)2 D) Cd2NO3
 
Answer & Explanation Answer: A) Cd(NO3)2

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2 941
Q:

Which of the following induces souring of milk?

A) Acetic Acid B) Citric Acid
C) Ascorbic Acid D) Lactic Acid
 
Answer & Explanation Answer: D) Lactic Acid

Explanation:
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0 1242
Q:

What happens when one S and one P orbital is hybridized?

A) We get three orbitals in a plane B) We get two orbitals at 180 degrees
C) We get two mutually perpendicular orbitals D) We get four orbitals directed tetrahedrally
 
Answer & Explanation Answer: B) We get two orbitals at 180 degrees

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3 757
Q:

LPG is a mixture of _______.

A) methane and butane B) butane and propane
C) methane and propane D) ethane and propane
 
Answer & Explanation Answer: B) butane and propane

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2 1097
Q:

The common name of sodium bicarbonate is _____.

A) baking soda B) borax
C) bleach D) epsom salt
 
Answer & Explanation Answer: A) baking soda

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3 1699
Q:

Which of the following elements has the lowest melting point?

A) Iodine B) Lead
C) Tin D) Mercury
 
Answer & Explanation Answer: D) Mercury

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1 985