Name the method by which pure metal can be obtained.

Very pure N_(2) can be obtained by

Name the method, which helps in determining the age of fossils.

Pure methane can be prepared by:

Pure substance can be

Name two metals which are both malleabl and ductile.

Name the non-metal which is liquid.

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the stable hydrogen sulphate which can be obtained in solid state:

Which of the following metals) can be obtained by electrolysis of their aqueous salt solutions

Which out of the following metals can be obtained by clectolysis of the aqueous solution of their

I am an artificial method of vegetative propagation, through which the desired characters can be obtained . Who am I ?