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

The value of observed and calculate molecular weights of silver nitrate are 92.64 and 170 respectively. The degree of dissociation of silver nitrate will be :

1) 60%
2) 83.5%
3) 85.3%
4) 41.6%

Bauxite is concentrated by :

1) Chemical method
2) Roasting
3) Magnetic separation
4) Froth floatation process.

Identify the correct order of boiling points of the following compounds having nearly same molecular weight.

1) I > II > III > IV

2) IV > III > II > I

3) III > IV > II > I

4) IV > II > III > I

When sodium benzenesulphonate is fused with NaOH, followed by cidification with
HCl, the product formed is :

1) benzensulphonic acid
2) sodium
3) phenol
4) chlorobenzene

Acetone and acetophenone can be distinguished by :

 1) Tollens test
2) CNP TEST
3) Schiff's regent
4) saturated solution of NaHSO₃.

Crystals of 100% H₂?O₂? is obtained treating 90%  H₂?O₂? with:

1) solid CO₂? and ether
2) dil. H₂?SO₄?
3) quick lime
4) NaOH+CaO

 Consider the following reaction,

Product Z is:

1) CH₂=CH₂
2) CH₃CH₂−O−CH₂−CH
3) CH₃CH₂−OSO₃H
4) CH₃CH₂OH

Which of the following cannot reduce the acidified solution of permanganate?

1)  Fe²⁺ ions

2)  Nascent hydrogen

3)  H₂

4)  (COOH)₂

The adsorption of a gas, on a solid surface, varies with pressure of the gas in which of the following manner?

1) Slow fast independent of the pressure
2) Fast slow independent of the pressure
3) Independent of the pressure slow fast
4) Independent of the pressure fast slow