Q19 of 26 Page 1

Predict the products of the following reactions:

(i)


(ii)


(iii)


(i) Aldehydes and ketones can be reduced to the respective hydrocarbon by converting them with hydrazine and treating the obtained hydrazone with bases like potassium sodium hydroxide. This conversion is known as Wolf- Kishner reduction.


(propane) +N2


(ii) Iodoform test is used to detect methyl ketones (R- CO-CH3) and secondary alcohols like R-CH(OH)-CH3 . They react with iodine in presence of base like sodium hydroxide to give iodoform which is a yellow colour solid.



(iii) Sodium acetate reacts with soda and lime to give methane gas. This reaction is used for laboratory preparation of methane.



More from this chapter

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17

Give reasons for following observations:

(i) Leather gets hardened after tanning.


(ii) Lyophilic sol is more stable than lyophobic sol.


(iii) It is necessary to remove CO when ammonia is prepared by Haber’s process.


 18

Write the names and structures of the monomers of the following polymers:

 20

How do you convert the following:

(i) Phenol to anisole


(ii) Propan-2-ol to 2-methylpropan-2-ol


(iii) Aniline to phenol


OR


(a) Write the mechanism for the following reaction:



(b) Write the equation involved in the acetylation of Salicylic acid.


21

(i) Which of the following is a disaccharide: starch, maltose, fructose, glucose?

(ii) What is the difference between fibrous protein and globular protein?


(iii) Write the name of vitamin whose deficiency causes bone deformation in children?