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166
Q:

Among the following the maximum covalent character is shown by the compound

(1)MgCl2

(2)FeCl2

(3)SnCl2

(4) AlCl3

A) Option 1 B) Option 2
C) Option 3 D) Option 4

Answer:   D) Option 4



Explanation:

According to Fajans rule, cation with greater charge and smaller size favours covalency.

Subject: Chemistry
Exam Prep: AIEEE
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Which one of the followingis notan allotrope of carbon?

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Answer & Explanation Answer: A) Coal

Explanation:

Allotropy is the property of some chemical elements to exist in two or more different forms, or allotropes, when found in nature. There are several allotropes of carbon like diamond, graphite, graphene, fullerene, etc.Coal is not an allotrope of carbon because it is not 100% carbon. It contains lot of silica, sulphur and other compounds of carbon apart from carbon.

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Which of the following compounds from nitrites with nitrous acid?

A) Primary amines B) Secondary amines
C) Tertiary amines D) All of these
 
Answer & Explanation Answer: D) All of these

Explanation:

The acid and the nitrite form nitrous acid which then reacts with the amine.

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Which one of the following is an insulator?

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Zeolite is

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The most extensive use of molasses after fermentation is for producing

A) Methanol B) Sugar
C) Ethanol D) Sugarcane
 
Answer & Explanation Answer: C) Ethanol

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Acid rain is caused due to pollution of atmosphere by

A)  oxides of nitrogen and sulphur B)  oxides of nitrogen and phosphorous
C) oxides of carbon and nitrogen D)  oxides of nitrogen and methane
 
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Explanation:
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Which metal is responsible for Itai-Itai disease?

A) Cadmium B) Nickel
C) Chromium D) Mercury
 
Answer & Explanation Answer: A) Cadmium

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Which among the following is an example of solid sol?

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Answer & Explanation Answer: C) Coloured gemstones

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