NEET Practice Questions - Chemistry - Haloalkanes and Haloarenes

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  • Subject:

    Chemistry

  • Chapter:

    Haloalkanes and Haloarenes


When CH3CH2CHCl2 is treated with NaNH2, the product formed is                             

(a) CH3-CH=CH2                     (b) CH3-CCH

(c) CH3CH2CH<NH2NH2                  (d) CH3CH2C<NH2Cl


R-CH2-CCl2-R ReagentR-CC-R. The reagent is

(a) Na                                   (b) HCl in H2O

(c) KOH in C2H5OH                (d) Zn in alcohol


Ethyl chloride is converted into diethyl ether by                                                  

(a) Wurtz reaction                           (b) Grignard reaction

(c) Perkin's reaction                         (d) Williamson's synthesis


The alkyl halide is converted into an alcohol by                                    

(a) addition                       (b) substitution

(c) dehydrohalogenation     (d) elimination


Propan-1-ol may be prepared by reaction of propene with                            

(a)  CH3-COOH                   (b) H3BO3

(c) B2H6/NaOH-H2O2         (d) H2SO4/H2O


What is formed when a primary alcohol undergoes catalytic dehydrogenation?

(a) Aldehyde        (b) Ketone        (c) Alkene             (d) Acid 


In SN2 reactions, the correct order of reactivity for the following compounds : CH3ClCH3CH2ClCH32CHCl and CH33CCl is :

(a) CH3Cl>CH32CHCl>CH3CH2Cl>CH33CCl

(b) CH3Cl>CH3CH2Cl>CH32CHCl>CH33CCl

(c) CH3CH2Cl>CH3Cl>CH32CHCl>CH33CCl

(d) CH32CHCl>CH3CH2Cl>CH3Cl>CH33CCl


A compound A of formula C3H6Cl2 on reaction with alkali can give B of formula C3H6O or C of formula C3H4. B on oxidation gave a compound of the formula C3H6O. C with dilute H2SO4 containing Hg2+ ion gave D of formula C3H6O, which with bromine and NaOH gave the sodium salt of C2H4O2. Then A is :

(a) CH3CH2CHCl2

(b) CH3CCl2CH3

(c) CH2ClCH2CH2Cl

(d) CH3CHClCH2Cl

 


Which set fo reagents will produce freon (CCl2F2)?

(a) C + F2 + Cl2                     

(b) CH3Cl + F2

(c) CCl4 + HF SbCl5                 

(d) CCl4 + F2


Cl2 Benzotrichloride Hydrolysis Y

X and Y respectievely are:

(a) benzene, benzaldehyde

(b) toluene, benzaldehyde

(c) toluene, benzoic acid

(d) benzene, benzoic acid