WBUT 2013 CHEMISTRY-1 (CH-201/2013) SEM-2 QUESTION PAPER

       CS/B.TECH(NEW)/SEM-2/CH-201/2013

   2013

   CHEMISTRY - I

  Time Allotted : 3 Hours                                           Full Marks : 70

                                                      The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words as far as practicable.

                                                       GROUP -A

                        ( Multiple Choice Type Questions )

1.   Choose the correct alternatives for the following :1x10=10

i)              For an endothermic reaction

          a)            ∆H is positive

           b)            ∆H is negative

c)            ∆H = 0

            d)           ∆U is negative. 

ii)   Which one of the following has the least bond angle ?

a)       NH₃

b)       BeF₂

c)      H₂O

d)     CH₄

iii)     A metal deficient ionic compound acts as

a)      n-type semiconductor

                                                                   b)      p-type semiconductor

                                                                   c)      intrinsic semiconductor

                                                                   d)   none of these.