Sawaal
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
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Here in the given options, Diamond is an element as it is the allotrope of the carbon atom.

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Strength of concrete increases with

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Strength of concrete increases with increase in water cement ratio as the strength of the cement is directly proportional to water cement ratio.

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Curdling of milk is an example of

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Explanation:

Coagulation :: The action or process of a liquid, especially blood, changing to a solid or semi-solid state.

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An acid can be defined as

Answer

An acid can be defined as a molecule or other species which can donate a proton or accept an electron pair in reactions.


(OR)


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After cleaning the thermometer should be placed in

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