First slide
Questions on calorimetry without phase change
Question

Three liquids A, B and C having same specific heat and mass m, 2m and 3m have temperature 200C, 400C and 600C respectively. Temperature of the mixture when

 Column-I Column-II
i.A and B are mixedp.350C
ii.A and C are mixedq.520C
iii.B and C are mixedr.500C
iv.A, B and C all three are mixeds.450C
  t.None
    

Now, match the given columns and select the correct option from the codes given below.

Codes

 

Moderate
Solution

When A and B are mixed

            ms(T-20) = (2m) s (40-T)  T = 33.30C

When A and C are mixed

           ms(T-20) = (3m) s(60-T)  T = 500C

When B and C are mixed

           (2m) s(T-40) = (3m)s(60-T)  T = 520C

When A, B and C are mixed

          ms(T-20) + (2m)s(T-40) = (3m)s(60-T)

 T = 46.670C

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