FSC 2nd Year Chemistry Unit-9 MCQs|Short|Long Questions

FSC 2nd Year Chemistry Unit-9 MCQs|Short|Long

2nd Year Chemistry Unit-9 MCQs with important Short and Long Questions. All Questions are collected from past papers of annual examination. 

FSC 2nd Year Chemistry Unit-9 MCQs

Read FSC 2nd Year Chemistry Unit-9 MCQs collected from past papers with short and long questions.

Aromatic Hydrocarbons

Each question has four possible answers. Select the correct answer and circled it.     

v  The benzene Molecule contains

(a) Three double bonds

(b) Two double bond

(c) One double bond  

(d) Delocalized p electron charge

v  Aromatic Hydrocarbons are derivatives of

(a) normal series of paraffins  

(b) Alkene                  

(c) Benzene                

(d) Cyclohexane

v  Benzene Can not under go

(a) Substitution reaction          

(b) Addition reaction 

(c) Oxidation reaction             

(d) Elimination reaction

v  Amongst the following the compound that can be most  readily sulphonated

(a) Toluene                                

(b) Benzene                       

(c) Nitrobenzene                       

(d) Chlorobenzene

v  Benzene was discovered by Machael faraday in 1825 by destructive distillation of

(a) Vegetable oil                       

(b) coal tar                        

(c) Cyclohexane                        

(d) a,b,c

v  The empirical formula of benzene is determined by

(a) X-rays analysis                    
(b) Atomic Analysis         
(c) Molecular analysis              
(d) elemental analysis

v  Molecular formula of Benzene indicates that it is

(a) Saturated                                            
(b) unsaturated                  
(c) Highly unsaturated              
(d) none of them

v  The experimental heat of hydrogenation of Benzene is

(a) -208KjMol-1          

(b) -358KjMol-1                           

(c) -231.0 KjMol-1      

(d) -350KjMol-1

v  Alkyl Benzene are readily oxidized by                            

(a) KMnO4           

(b) K2Cr2O7        

(c) H2SO4             

(d) a and b

v  Which one of them is meta directing group    

(a) –NH2              (b) -OH               

(c) -COOH           (d) –Cl

B).         Give Short Answer of the following                                                                                 

1.           Write two reactions in which Benzene behaves saturated Hydrocarbon.

2.           How will you prepare the metachloritrobenzene from Benzene in two steps.

3.           Draw the structure of 4 Bromo 2,6 dimethyl benzaldehyde and para dibenzyl benzene.

4.           How x-rays study shows the Hexagonal structure of benzene.

5.           How Maleic acid is prepared from benzene.

Q.No.2.                                                                                                                                                               
(a)          Explain the Modern structure of Benzene by atomic orbital treatment.

(b)         How will you prepare the Benzene from followings

 (i)         Acetylene (ii) n-Hexane 

(iii)       Sodium Benzoate (iv) Phenol (v) Benzene Sulphoric Acid