The oxidation state of oxygen is zero in

• CO

• O₃

• SO₂

• H₂O₂

Out of the following fractions of petroleum the one having the lowest boiling point is

• kerosene oil

• diesel oil

• gasoline

• heavy oil

Coordination number of Fe in the complexes [Fe(CN)₆]^4-, [FeCN)₆]^3- and [FeCl₄]^- would be respectively

• 6, 3, 4

• 6, 6, 4

• 2, 3, 3

• 6, 4, 6

84.

The activation energy for a simple chemical reaction A → B is E_a in forward direction. They activation energy for reverse reaction

• is negative of E_a

• is always less than E_a

• can be less than or more than E_a

• is always double of E_a

When a biochemical reaction is carried out in laboratory from outside of human body in the absence of enzyme than rate of reaction obtained is 10^-6 times, then activation energy of reaction in the presence of enzyme is

• 6/RT

• P is required

• different from E_a obtained in laboratory

• cannot say anything

[-NH(CH₂)₆NHCO(CH₂)₄CO-]_n is a

• addition polymer

• thermosetting polymer

• homopolymer

• copolymer

Isoprene is a valuable substance for making

• propene

• liqmd fuel

• synthetic rubber

• petrol

Enzymes are made up of

• edible proteins

• proteins with specific structure

• nitrogen contaning carbohydrates

• carbohydrates

Methoxy methane and ethanol are

• functional isomers

• chain isomers

• optical isomers

• geometrical isomers

Most stable ion is

• C₆H₅CH₂⁺

• (CH₃)₃-C⁺

• (CH₃)₂CH⁺

• CH₃CH₂⁺