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1) Why is it necessary to distil aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

2) The reaction of aldehydes and ketones with ammonia derivative ***G-NH₂ to form compounds containing the group C=N-G and water is known as _______reaction.

3) Which of the following gives a positive iodoform test as well as a silver mirror test?

4) Aldehydes and small methyl ketones react with a saturated aqueous solution of sodium bisulphite to form a crystalline

5) Aldehyde and ketone react with hydroxylamine to form _______

6) Reaction of ethanal and propanone with HCN is example of ____________ reaction.

7) Aldehyde and ketone react with 2,4-DNPH to form ________

8) When aliphatic aldehyde is treated with Fehling's solution, a brick-red precipitate of _________ is formed

9) Upon hydrogenation of phenol at 150°C in the presence of Ni catalyst, we get

10) Which pair is incorrectly matched?

11) Phenol on reaction with concentrated nitric acid produces

12) Due to the involvement of the negative charge of oxygen in the ring of benzene

13) Ethers can be obtained from alcohols by which type of reaction?

14) Hydroxy derivatives of paraffins are

15) 50% retention of molecule configuration is observed in

16) The first step is the same for which mechanism

17) If OH- attacks the electrophilic carbon atom of alkyl halide, the product is ________ and if it attacks ẞ- hydrogen the product is _________.

18) In β-Elimination reaction, nucleophile attacks on

19) The product formed, when excess of ammonia is allowed to react with ethyl bromide.

20) In tertiary alkyl halides, the halogen atom is attached to a carbon atom which is further attached to _______ carbon atoms.

21) The rate equation, Rate = k [Alkyl Halide] can be considered for

22) Attacking of Nucleophile and leaving of leaving group happens simultaneously in:

23) In SN reactions of alkyl halides, Nucleophile attacks on

24) 2-Iodo-2-methylpentane is an example of

25) Which of the following is deciding factor for reactivity of alkyl halide