Which is not true about acetophenone?

1) Reacts to form 2,4-dinitrophenyl hydrazone
2) reacts with Tollen's reagent to form silver mirror
3) Racts with I₂/NaOH to form iodoform
4) On oxidation with alkaline KMnO₄ followed by hydrolysis give benzoic acid

2,3 -dimethyl - 2- butene can be prepared by heating which of the following compounds with a strong acid?

1) (CH₃)₂CH-CH(CH)₃-CH=CH₂
2) (CH₃)₃C-CH=CH₂
3) (CH₃)₂C =CH-CH₂-CH₃
4) (CH₃)₂CH-CH₂-CH=CH₂

Amides can be converted into amines by:

1) Sandmeyer reaction
2) Dehydration reaction
3) Hofmann's reaction
4) Carbylamine reaction.

Which of the following metal is purified by Mond carbonyl method ?

1) Ti
2) Ge
3) Zr
4) Ni

Which of the following process essentially follows the Markownikoff's rule?

1) Reaction of alkyl halides with dry silver oxide

2) Alkoxy mercuration demercuration of alkenes

3) Reaction of alpha−alpha−haloethers with Grignard reagent

4) All of the above

What is the n factor or valancy factor of ozone during the change 2O_3? → 3O₂??

1) 2
2) 4
3) 6
4) 8

__________ is made from cow dung is mainly used as fertilizer to prevent soil pollution.

1) Manure

2) DDT

3) Sodium chlorate

4) Sodium arsenite

Acetylene molecule, the two carbon atoms are linked by

1) One sigma bond and two pi-bonds
2) Two sigma bonds and one pi-bond
3) Three sigma bonds
4) Three pi-bonds

Identify the element which can have highest oxidation number

 1. C
 2. N
 3. O
 4. Cl

In benzene, all the six C-C bonds have the same length because of :

1) Isomerism
2) chain isomerism
3) resonance
4) hybridisation.