HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Predict the major product, when 2-methyl-but-2-ene is converted into alcohol in the following method.

Hydroxylation using bayers reagent

Arrange the following in the increasing order of their boiling point and give a reason for your ordering.

Butan-2-ol, Butan-1-ol, 2-methyl propane-2-ol

Arrange the following in the increasing order of their boiling point and give a reason for your ordering.

Propan-1-ol, propan-1, 2, 3-triol, propan-1, 3-diol, propan-2-ol

Can we use nucleophiles such as NH₃, CH₃O for the Nucleophilic substitution of alcohols?

Is it possible to oxidise t-butyl alcohol using acidified dichromate to form a carbonyl compound?

What happens when 1-phenyl ethanol is treated with acidified KMnO₄.

Write the mechanism of acid catalysed dehydration of ethanol to give ethene.

How is phenol prepared from isopropyl benzene?

Explain Kolbe’s reaction.

Write the chemical equation for Williamson's synthesis of 2-ethoxy-2-methyl pentane starting from ethanol and 2-methyl pentan-2-ol.

Write the structure of the aldehyde, carboxylic acid and ester that yield 4-methylpent-2-en-1-ol.

How is the conversion effected benzyl chloride to benzyl alcohol?

How is the conversion effected benzyl alcohol to benzoic acid?

Complete the following reaction.

\[\ce{C6H5 - OH ->[Zn dust] A ->[CH3Cl][Anhydrous AlCl3] B ->[acid KMnO4] C}\]

0.44 g of a monohydric alcohol, when added to methyl magnesium iodide in ether, liberates at STP 112 cm³ of methane with PCC the same alcohol form a carbonyl compound that answers the silver mirror test. Identify the compound.

Complete the following reaction.

Complete the following reaction.

\[\ce{C6H5 - CH2CH(OH)CH(CH3)2 ->[conc. H2SO4]}\]

Phenol is distilled with Zn dust followed by Friedel-crafts alkylation with propyl chloride to give a compound B, B on oxidation gives (c) Identify A, B and C.

Identify A, B, C, D and write the complete equation.

What will be the product (X and A) for the following reaction?

\[\ce{acetylchloride ->[i) CH3MgBr][ii) H3O^+] X ->[acid K2Cr2O7] A}\]