# Chemistry Questions

Q:

Sodium carbonate crystal lose water molecules this property is called

 A) hygroscopy B) deliquescence C) efflorescence D) None of these

Explanation:

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Q:

The absolute value of charge on electron was determined by

 A) J.J.Thomson B) R.A. Millikan C) Rutherford D) Chadwick

Explanation:

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Q:

Which one of the following substances does not have a melting point

 A) bromine B) sodium chloride C) mercury D) glass

Explanation:

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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

Explanation:

Due to absence of low lying vacant d orbital in B, $sp3d2$hybridization is not possible hence $BF63-$will not formed.

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Exam Prep: AIEEE

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Q:

The discovery of neutron became very late because

 A) it is present in nucleus B) it is a fundamental particle C) it does not move D) it does not carry any charge

Explanation:

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Q:

What is the third most common gas found in the air we breathe ?

 A) Argon B) Neon C) Carbondioxide D) Hydrogen

Explanation:

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.

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Job Role: Bank Clerk

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Q:

Which one of the following mixture is homogeneous

 A) starch and sugar B) methanol and water C) graphite and charcoal D) calcium carbonate and calcium bicarbonate

Explanation:

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Q:

Which one of the following elements is essential for construction is nuclear reactors

 A) Cobalt B) Nickel C) Zirconium D) Tungsten

Explanation:

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