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 is an example of mixture?

A) Milk B) Gasoline
C) Liquefied petroleum gas D) All options are correct
 
Answer & Explanation Answer: D) All options are correct

Explanation:
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1 1300
Q:

What is the number of groups and periods in the modern periodic table?

A) 18, 7 B) 18, 8
C) 16, 7 D) 16, 8
 
Answer & Explanation Answer: A) 18, 7

Explanation:
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0 1102
Q:

Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in

A) Conduction B) Convection
C) Radiation D) Both conduction and convection
 
Answer & Explanation Answer: B) Convection

Explanation:
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1 1098
Q:

What is dry ice?

A) Solid Carbon dioxide B) Solid Nitrogen dioxide
C) Solid Sulphur dioxide D) Solid Water
 
Answer & Explanation Answer: A) Solid Carbon dioxide

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2 1002
Q:

Which among the following metal is used for galvanization?

A) Zinc B) Copper
C) Iron D) Silver
 
Answer & Explanation Answer: A) Zinc

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2 1028
Q:

Which element is generally No Radioactive?

A) Thorium B) Polonium
C) Germanium D) Plutonium
 
Answer & Explanation Answer: C) Germanium

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1 1052
Q:

Hydrogenation process is associated with which of the following?

A) Rubber B) Petroleum
C) Copper D) Edible fats
 
Answer & Explanation Answer: D) Edible fats

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2 1454
Q:

........... compound is used as a drying agent.

A) Calcium oxide B) Calcium carbide
C) Gypsum D) Calcium carbonate
 
Answer & Explanation Answer: A) Calcium oxide

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Exam Prep: Bank Exams

2 1133