The maximum oxidation state exhibited by actinide ions is from C

Subject

Chemistry

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

21.

IUPAC name of (CH3)3 CCl is

  • n-butyl chloride

  • 3-chloro butane

  • 2-chloro-2-methylpropane

  • t-butyl chloride


22.

Hyperconjugation is most useful for stabilising which of the following carbocations?

  • Neo-pentyl

  • Tert-butyl

  • Iso-propyl

  • Ethyl


23.

The isomerism that arises due to restricted bond rotation is

  • metamerism

  • optical isomerism

  • position isomerism

  • geometrical isomerism


24.

Which of the following undergoes reduction with hydrogen peroxide in alkaline medium?

  • Mn2+

  • I2

  • PbS

  • Fe2+


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25.

The maximum oxidation state exhibited by actinide ions is

  • +5

  • +4

  • +7

  • +8


C.

+7

Actinoids exhibit variable oxidation states, which vary from +3 to +7.


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26.

Leaching is a process of

  • reduction

  • concentration

  • refining

  • oxidation


27.

Electrolysis of fused NaCl will give

  • Na

  • NaOH

  • NaClO

  • NaClO3


28.

2 g of a radioactive sample having half-life of 15 days was synthesised on 1st Jan 2009. The amount of the sample left behind on 1st March, 2009 (including both the days) is

  • 0 g

  • 0.125 g

  • 1 g

  • 0.5 g


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29.

The rate equation for a reaction,

 B

is r = k[ A]0. If the initial concentration of the reactant is a mol dm-3 the half-life period of the reaction is

  • a2k

  • ka

  • ak

  • 2ak


30.

The one which has least iodine value is

  • sunflower oil

  • ginger oil

  • ghee

  • groundnut oil


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