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The S-Block Elements

Question

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Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

Ca(OCl)₂

CaO₂Cl

CaCl₂

CaOCl₂

Solution

D.

CaOCl₂

CaOCl₂, Calcium hypochlorite is the active ingredient in bleaching powder which releases chlorine.

Some More Questions From The s-Block Elements Chapter

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?

Why does lithium form complexes?

Why are alkali metal ions diamagnetic and colourless?

Why are alkali metals the most electropositive in nature?

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