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26.

2-chloro-2-rnethylpentane on reaction with sodium methoxide in methanol yields

12112020175_2a chemistry.JPG

12112020604_2b chemistry.JPG

12112020759_2c chemistry.JPG


A) Both I and III

B) Only III

C) Both I and II

D) All of these



27.

 Which of the following is an anionic detergent?


A) (a) Sodium lauryl sulphate

B) (b) Cetyltrimethyl ammonium bromide

C) (c) Glyceryl oleate

D) (d) Sodium stearale



28.

Which of the following statements about low density polythene is false?


A) (a) It is a poor conductor of electricity

B) (b) Its synthesis required dioxygen or a peroxide initiator as a catalyst

C) (c) It is used in the manufacture of buckets, dustbins etc.

D) (d) Its synthesis requires high pressure



29.

A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. lf e and mare charge and mass of an electron, respectively, then the value of h/λ, where λ is the wavelength  associated with electron wave) is given by


A) $2meV$

B) $\sqrt{meV}$

C) $\sqrt{2meV}$

D) meV



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