#### Hydroxy Compounds and Ethers Three Marks Questions

12th Standard EM

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Chemistry

Time : 01:00:00 Hrs
Total Marks : 40
8 x 5 = 40
1. What will be the product for the following reaction acetylchloride $\\ \\ \overset { (i)CH_{ 3 }MgBr }{ \underset { (ii){ H }_{ 2 }{ O }^{ + } }{ \longrightarrow } } \times \overset { acid{ k }_{ 2 }{ cr }_{ 2 }{ o }_{ 7 } }{ \longrightarrow } A$ Identify X and A

2. How will you convert acetylene into n-butyl alcohol.

3. Predict the product A,B,X and Y in the following sequence of reaction

3,3 – dimethylbutan -2-ol on treatment with conc. H2SO4 to give tetramethyl ethylene as a major product. Suggest a suitable mechanisms

4. Complete the following reactions

ii) $C_6H_5-CHCH(OH)CH(CH_3)_2 \overset{ConH_2SO_4}\longrightarrow$

5. Phenol is distilled with Zn dust followed by friedel – crafts alkylation with prophyl chloride to give a compound B, B on oxidation gives (c) Indentify A,B and C.

6. Identify A,B,C,D and write the compelete equation

7. Complete the following reactions
i) CH3- CH2 - OH $\overset { { P}{ Br_3 }{ } }{ \underset { {} }{ \longrightarrow } }$  A  $\overset { { aq.NaOH}{ }{ } }{ \underset { {} }{ \longrightarrow } }$ B $\overset { { Na}{ } }{ \underset { {} }{ \longrightarrow } }$
ii) C6H5- OH  $\overset { { Zndert}{ } }{ \underset { {} }{ \longrightarrow } }$ A $\overset { { CH_3}{Cl}{ } }{ \underset { {Anhydrs}{AlCl_3} }{ \longrightarrow } }$ B $\overset { { acid}{K MnO_4}{ } }{ \underset { {} }{ \longrightarrow } }$ C

8. 0.44g 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 silver mirror test. Identify the compound.