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The S-Block Elements

Question
CBSEENCH11007124
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Name a few important uses of sodium hydroxide. 

Solution

Sodium hydroxide is used:
(i) in the manufacture of metallic sodium, artificial silk and dyes.
(ii) in the refining of petroleum and as a reagent in the laboratory. 
(iii) in soap, textile and paper industries.
(iv) in the preparation of soda lime (NaOH + CaO).
(v) for preparing bleaching agents like sodium hypochlorite and for the purification of bauxite.

Some More Questions From The s-Block Elements Chapter

Group 1 elements are called alkali metals. Why?

Why caesium can be used in photoelectric cell while lithium can not be?

In aqueous solution, Li+ ion has lowest mobility. Why?

Lithium has highest ionisation energy in group 1 elements, yet it is strongest reducing agent. Comment.

The softness of group 1 elements increases down the group with increasing atomic number. Give reason. 

Which is the most reactive alkali metal and why?

Why alkali metals do not form M2+ ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

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