Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions for Chemistry

Write the mechanism of acid dehydration of ethanol to yield ethene.

Explain why Grignard reagents should be prepared under anhydrous conditions?

What is the basicity of H₃PO₄?

Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.

Explain why Grignard reagents should be prepared under anhydrous conditions? 

Explain why Grignard reagents should be prepared under anhydrous conditions?

What is the basicity of \[\ce{H3PO4}\]?

What is the basicity of \[\ce{H3PO4}\]?

Write the mechanism of acid dehydration of ethanol to yield ethene. 

Suggest a way to determine the `∧_"m"^∘`value of water.

Discuss the variation of conductivity and molar conductivity with concentration.

Explain why Grignard reagents should be prepared under anhydrous conditions?

What is the basicity of \[\ce{H3PO4}\]?

Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene

How much electricity in terms of Faraday is required to produce 20 g of Ca from molten CaCl₂?

(Given: Molar mass of Calcium is 40 g mol⁻¹.)

What happens when \[\ce{CH3 - Br}\] is treated with KCN?

Write the dispersed phase and dispersion medium of the following colloidal systems: 

(i) Smoke

(ii) Milk

Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?

Chlorobenzene is extremely less reactive towards a nucleophilic substitution reaction. Give two reasons for the same.