Home
Class 12
CHEMISTRY
Assertion (A) : NaCl reacts with concent...

Assertion (A) : NaCl reacts with concentrated `H_(2)SO_(4)` to give coloured fumes with pungent smell. But on adding `MnO_(2)` the fumes become greenish - yellow.
Reason (R) : `MnO_(2)` oxidises HCl to chlorine gas which is greenish -yellow.
Reason (R) : `MnO_(2)` oxidises `HCI` to chlorine gas which greenish- yellow.

A

(A) and (R) both are correct statements and (R) is correct explanation for (A).

B

(A) and (R) both are correct statements but (R) is not correct explanation for (A).

C

(A) is correct statement but (R) is wrong statement.

D

(A) and (R) both are incorrect statements.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise MCQ( SINGLE CORRECT TYPE)|50 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise MCQ( MORE THAN ONE CORRECT TYPE)|8 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise MATCHING TYPE|1 Videos

  • ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES

    CHHAYA PUBLICATION|Exercise WARM UP EXERICSE|132 Videos

  • POLYMERS

    CHHAYA PUBLICATION|Exercise SOVLED CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

On heating copper turnings with conc. H_(2)SO_(4) , a colourless gas with pungent smell is evolved which decolourises acidified KMnO_(4) solution. Identify the gas.

Assertion (A) : HI cannot be prepared by the reaction of KI with concentrated H_(2)SO_(4) . Reason (R) : HI has lowest H - X bond strength among halogen acids .

Give a reaction of H_(2)SO_(4) in which it exhibits oxidising nature.

Hot and concentrated H_(2)SO_(4) is a strong oxidising agent. It oxidises both metals and non-metals. Which one of the following elements forms two gaseous products on oxidation with conc. H_(2)SO_(4) -

Assertion (A): Electrolysis of NaCl solution gives chlorine at anode instead of O_(2) . Reason (R): Formation of oxygen at anode requires overvoltage.

Which happens when. Ozone reacts with KI in presence of H_2SO_4 . Sodium Chloride is treated with MnO_2 in presence of H_2SO_4

A metal X on heating in nitrogen gas gives Y, Y on treatment with H_2 O gives a colourless gas which then passed through Cuso_4 solution gives a blue colour. Y is

1.78L of chlorine gas at STP is prepared by using 40% HCl by weight according to the following reaction- MnO_(2)+4HCl to MnCl_(2)+2H_(2)O+Cl_(2) . Find the volume of hydrochloric acid and mass of MnO_(2) requried to produce this amount of chlorine gas. [specific gravity of the HCl solution=1.12]

Which are oxidised in the following reactions ? Give reasons . 2Na+H_(2)to2NaH