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:

Which of the following statement(s) is/are CORRECT?

I. Acids are sour in taste and generate H+ ions.

II. Acids are sour in taste and generate OH– ions.

III. Bases are bitter intaste and generate OH– ions.

A) Only I and III B) Only I and II
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: A) Only I and III

Explanation:
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2 17831
Q:

Oxygen molecule is ______.

A) Monoatomic B) Diatomic
C) Triatomic D) Polyatomic
 
Answer & Explanation Answer: B) Diatomic

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0 942
Q:

Molybdenite is an ore/mineral of

A) Molybdenum B) Nickel
C) Silver D) Tin
 
Answer & Explanation Answer: A) Molybdenum

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1 951
Q:

_________ gets converted to phosgene, when exposed to sunlight.

A) Chloroform B) Acetone
C) Benzene D) Propylene
 
Answer & Explanation Answer: A) Chloroform

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0 1341
Q:

Carnotite is an ore/mineral of _____.

A) Beryllium B) Chromium
C) Uranium D) Copper
 
Answer & Explanation Answer: C) Uranium

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0 994
Q:

_____ is the major component of natural gas.

A) Acetone B) Methane
C) Chlorine D) Hexane
 
Answer & Explanation Answer: B) Methane

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0 918
Q:

What is used to prevent freezing of fuel in space crafts?

A) Benzene B) Glycol
C) Acetylene D) Ester
 
Answer & Explanation Answer: B) Glycol

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0 1059
Q:

Which of the following gases is heavier than oxygen?

A) Carbon dioxide B) Ammonia
C) Methane D) Helium
 
Answer & Explanation Answer: A) Carbon dioxide

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5 883