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Ncert Solutions Chemistry Class 12th

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New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

Addition of H2SO4 to BaO2 produces:
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V
Vishal Baghel

Contributor-Level 10

BaO2 + H2SO4  BaSO4 + H2O2

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

Math the List-I with List-II

List – I                                                                       List – II

(A) Concentration of gold ore                       &nbs

...more
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Vishal Baghel

Contributor-Level 10

Cyanidation is applicable for gold extraction, leaching for NaOH, froth stabilizer is aniline and blister copper is related with SO2.

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

Match the List-I with List-II

List – I                                                                       List – II

(A) Lyophilic colloid                         

...more
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V
Vishal Baghel

Contributor-Level 10

 Emulsion are liquid colloids, protective colloids are lyophilic, FeCl3 + H2O → Δ ( + v e ) l y  charged colloids and FeCl3 + NaOH →           (-ve)ly charged colloids.

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

A Chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of (a) benzanilide, (b) aniline and (c) acetophenone. When the column is eluted with a mixture of solvents, hexane; ethyl acetate ( 20 : 80 ) , the sequence of obtained compounds is
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A
alok kumar singh

Contributor-Level 10

Aniline has higher viscosity due to intermolecular H -bonding.

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

For the following reactions:

k s and k e are respectively, the rate constant for substitution and elimination, and μ = k s k e , the correct option is

 
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A
alok kumar singh

Contributor-Level 10

Is bulky base, so elimination is dominating.

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

In the following reaction sequence, structures of A and B respectively will be

 
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A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

Consider the following reactions:

Which of these reactions are possible?

  1.  
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A
alok kumar singh

Contributor-Level 10

Carbon-chlorine bond cleavage is not possible in C H 3 = C H - C l

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

In the following reaction sequence

 
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A
alok kumar singh

Contributor-Level 10

Kindly go through the solution

 

New question posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

The refining method used when the metal and the impurities have low and high melting temperatures, respectively is
0 Follower 2 Views

New answer posted

3 months ago

Ncert Solutions Chemistry Class 12th Class 12th

In the following reactions, products(A) and ( B ) respectively are N a O H   (Hot and Conc)   + C l 2 ? ( A ) +  side products
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A
alok kumar singh

Contributor-Level 10

6 N a O H + 3 C l 2 ? 5 N a C l + N a C l O 3 + 3 H 2 O

2 C a ( O H ) 2 + C l 2 ? C a ( O C l ) 2 + C a C l 2 + H 2 O

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