The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

The average age of A, B And C sis 30 years. If the difference between B's age and A's age is same as the difference between C's age and B's age . If D is 40 years older than B then what is the sum of the age B and D?

A

130 years

B

60 years

C

75 years

D

100 years

If the numerator of a fraction is increased by 150% and the denominator of a fraction increased by 200% fraction becomes 10/19. Find the fraction.

A

12/17

B

10/16

C

12/19

D

9/11

If 1 is added to the numerator of a fraction, the fraction becomes 1. If 1 is added to the denominator, the fraction becomes 12Find the fraction.

A

13

B

12

C

23

D

34

8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?

A

138 years

B

164 years

C

148 years

D

152 years

The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

A

m

B

$$\frac{1}{{\text{m}}}$$

C

$$\sqrt {\text{m}} $$

D

m²

In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

A

Semi-batch

B

Tubular

C

Batch

D

Back-mix

Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method

A

Is more accurate in finding the number of equilibrium stages

B

Accounts for the enthalpy changes in the process

C

Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method

D

All of the above

If two times of the daughter's age in years is included to the mother's age, the total is 70 and if two times of the mother's age is included to the daughter's age the total is 95. So the Mother's age is -

A

38

B

30

C

40

D

41

5 years ago the ration of father's age to son's age was 5:1 and 2 years later father's age will be 3 times his sons's age. What is ration of their present age?

A

5:6

B

7:3

C

10:3

D

11:7

Son's age is one-third of father's age. In 12 years from now son's age will be one- half of the father's age. What is the age of the son at present?

A

6

B

10

C

24

D

12

The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

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