EASY
Earn 100

Assertion (A): HCl gas is dried by passing through concentrated H2SO4.

Reason (R): HCl gas reacts with NH3 that gives white fumes

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Important Questions on p- Block Elements

EASY

Write the balanced chemical equation for the laboratory preparation of hydrogen chloride gas.

HARD

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follows based on this reaction:

  • Why is concentrated sulphuric acid used instead of concentrated nitric acid?
EASY
When HCl reacts with finely powdered iron, it forms ferrous chloride and not ferric chloride. Why ?
EASY
Which among the following is the most reactive?
HARD

State one relevant reason for the following:

  • Hydrogen chloride gas fumes in moist air.
EASY

What is Aqua regia? Give its reaction with Gold.

HARD

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follows based on this reaction:

  • How is the gas collected?
MEDIUM
The correct statements about the oxoacids, HClO4 and HClO are,
EASY
HCl reacts with powdered Fe to give FeCl2 and not FeCl3. Why?
HARD

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follows based on this reaction:

  • Name the drying agent not used for drying the gas.
MEDIUM
Select the correct option(s) for the following statements:

1. Cl2O and ClO2 are used as bleaching agents.

2. OCl- salts are used as detergents.

3. OCl- disproportionates in alkaline medium.

4. BrO3- is oxidized in acidic medium.
HARD

Write the equations for reactions of chlorine with the following.

Excess NH3 

 

HARD
The correct statement(s) regarding,

(i) HClO

(ii) HClO2

(iii) HClO3 and

(iv) HClO4 is /are
HARD
With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).
EASY
The number of Cl=O bonds in perchloric acid is, "..."
HARD

Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follows based on this reaction:

  • Give the balanced chemical equation for the reaction with suitable condition(s) if any.
EASY

In which form of complex, platinum is dissolved in aqua regia?