Boron cannot form which one of the following anion | Chemistry Questions & Answers

Q:

Which one of the followingis notan allotrope of carbon?

A) Coal	B) Diamond
C) Graphite	D) Graphene

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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Q:

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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Q:

Which one of the following is an insulator?

A) copper	B) wood
C) mercury	D) aluminium

Answer & Explanation Answer: B) wood

Explanation:

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Q:

Zeolite is

A) hydrated ferric oxide	B) hydrated sodium aluminium silicate
C) sodium hexameta phosphate	D) sodium tetra borate

Answer & Explanation Answer: B) hydrated sodium aluminium silicate

Explanation:

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Q:

The most extensive use of molasses after fermentation is for producing

A) Methanol	B) Sugar
C) Ethanol	D) Sugarcane

Answer & Explanation Answer: C) Ethanol

Explanation:

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1 1405

Q:

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

Answer & Explanation Answer: C) oxides of carbon and nitrogen

Explanation:

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Q:

Which metal is responsible for Itai-Itai disease?

A) Cadmium	B) Nickel
C) Chromium	D) Mercury

Answer & Explanation Answer: A) Cadmium

Explanation:

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0 1464

Q:

Which among the following is an example of solid sol?

A) Milk of magnesia	B) Foam
C) Coloured gemstones	D) Rubber

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

Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$

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Boron cannot form which one of the following anions? (1) BO2- (2) BF63- (3) BH4- (4) B(OH)4-

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Boron cannot form which one of the following anions?

(1) $B O_{2}^{-}$

(2) $B F_{6}^{3 -}$

(3) $B H_{4}^{-}$

(4) $B (O H)_{4}^{-}$