Formation of Enamines

Q. 37.A : ethyne and its derivatives give white ppt with tollens reagent R: alkynes give white ppt due to Sn reaction

Q. 23 CONH2 __--------- reduction ---------> -CH2NH2 In above reaction hybridization state of carbon changes from ?

Q. in the conversion of nitrobenzene to Aniline what is the n factor if weakly acidic and weakly alkaljne medium are condired respectivel

Q. which is the strongest base ? _1-pyrole 2-aniline 3-pyridine 4-C6H10NH

Q. The correct structure of tribromooctaoxide i

Q. 14. Which of the compounds react with nitrous acid with the formation of oily liquid?? CH3NH2 CH3CH2NH2 (CH3)2NH2 (CH3)2CHNH2

Q. Benzamide on heating with bromine and caustic alkali gives

1. Benzene
2. Methylamine + benzene
3. Aniline
4. Meta-bromo benzaldehyde

Q. Benzamide on heating with bromine and caustic alkali gives

1. Benzene
2. Methylamine + benzene
3. Aniline
4. Meta-bromo benzaldehyde

Q. Strecker synthesis is preparation of amino acids through aminonitrile intermediates.

1. True
2. False

Q. Consider the sequence of reactions and choose the major product:

1. 
2. 
3. 
4. 

Q. The action of $AlC{l}_3$ in Friedel crafts reaction is

1. $\mathrm{to}\mathrm{absorb}\mathrm{HCl}$
2. $\mathrm{to}\mathrm{release}\mathrm{HCl}$
3. $\mathrm{to}\mathrm{produce}\mathrm{electrophile}$
4. $\mathrm{to}\mathrm{produce}\mathrm{nucleophile}$

Q.

balance the redox reactions oxidations number method /Half reactions method
1. H2O 2(aq) +Fe3⁺ (aq)+----Fe3⁺ (aq)+ H2O(l) (in acidic solution)

2.cr2O7^2- +SO 2 (g)---cr ³⁺ (aq)+ so₄^2-(aq) (in acidic solution)