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A t Kumar

Jan 25, 2015



Sanalkumar S

Feb 1, 2015

#### Give reason 1) Boric acid is a monobasic acid 2)PbCl4 is a good oxidising agent.



1) Boric acid is also known as orthoboric acid.

Formula of boric acid is B(OH)<...

Jan 27, 2015



May 4, 2015

#### What happens when Silicon is heated with methyl chloride at high temperature in the presence of copper powder



Heating of  Silicon with methyl chloride at high temperature in the Presence of copper produ...

San

May 8, 2014



Navaneeth K

Nov 13, 2014

#### First member of s and p block elements differ from the rest of the members . give reasons !



Ans: Because of their smaller size and absence of d-orbitals the first members of s, p-block elements posses different properties.
Ex: Nitrogen can show maximum valency of 3 it cannot expands it valency ...

May 23, 2014



May 23, 2014

#### Why diamond is a bad conductor of electricity while graphite is good conductor?



Diamond is made up of carbon atoms, and we know that carbon atoms are tetravalent i.e their valency is 4. In molecule of diamond, all the four valence electrons complete their bond where...

Sanalkumar S

Feb 5, 2015

#### GIVE REASON FOR THE FOLLOWING  A) BORON HAVE HIGH MELTING POINT. B) AQUEOUS SOLUTION OF BORAX IS BASIC.



Ans: The melting point of boron is very high.

Reason: Boron exists as a gia...

Sanalkumar S

Feb 5, 2015

#### WHAT HAPPENS WHEN ALUMINIUM  A.ADDED TO A SOLUTION OF NaOH. B.REACTS WITH HCl & REACTS WITH O2



A) Aluminium dissolves in NaOH forms soluble complex and liberates hydrogen gas.

A t Kumar

Jan 25, 2015



Sanalkumar S

Feb 1, 2015

#### Give reason 1) Boric acid is a monobasic acid 2)PbCl4 is a good oxidising agent.



1) Boric acid is also known as orthoboric acid.

Formula of boric acid is B(OH)<...

Jan 27, 2015



May 4, 2015

#### What happens when Silicon is heated with methyl chloride at high temperature in the presence of copper powder



Heating of  Silicon with methyl chloride at high temperature in the Presence of copper produ...

San

May 8, 2014



Navaneeth K

Nov 13, 2014

#### First member of s and p block elements differ from the rest of the members . give reasons !



Ans: Because of their smaller size and absence of d-orbitals the first members of s, p-block elements posses different properties.
Ex: Nitrogen can show maximum valency of 3 it cannot expands it valency ...

May 23, 2014



May 23, 2014

#### Why diamond is a bad conductor of electricity while graphite is good conductor?



Diamond is made up of carbon atoms, and we know that carbon atoms are tetravalent i.e their valency is 4. In molecule of diamond, all the four valence electrons complete their bond where...

Sanalkumar S

Feb 5, 2015

#### GIVE REASON FOR THE FOLLOWING  A) BORON HAVE HIGH MELTING POINT. B) AQUEOUS SOLUTION OF BORAX IS BASIC.



Ans: The melting point of boron is very high.

Reason: Boron exists as a gia...

Sanalkumar S

Feb 5, 2015

#### WHAT HAPPENS WHEN ALUMINIUM  A.ADDED TO A SOLUTION OF NaOH. B.REACTS WITH HCl & REACTS WITH O2



A) Aluminium dissolves in NaOH forms soluble complex and liberates hydrogen gas.

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