Related Questions

In batch distillation with constant reflux, overhead product composition __________ with time.
A Increases
B Decreases
C Does not vary
D May increase on decrease, depends on the system
The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as
A one sidereal day
B one solar day
C both the terms are similar, so any of these may be used
D None of the above
When the actual overhead is less than the absorbed overhead it is ________.
A over absorption
B under absorption
C equal absorption
D major absorption
With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux
A Increases
B Decreases
C Remains same
D May increase or decrease ; depends on system
Scheme-1: C6H5N2Cl→CuCNC6H5CN→H2o/H+C6H5COOH→∆Product-I Scheme-2: C6H5NO2→Fe/HCLC6H5NH2→N2NO3+HCL, 273KC6H5N2Cl→H2O/H+Product-II Scheme-3: CH3COOH→NH3CH3CONH2→NaOBrProduct-III উল্লিখিত Scheme সমূহে Product-I, Product-II এবং Product-III হলো যথাক্রমেঃ
A C6H5COONH4, C6H5Cl and CH3OH
B C6H5CONH2, C6H5NH2 and CH3OH
C C6H5CONH2, C6H5NH2 and CH3NH2
D C6H5CONH2, C6H5OH and CH3OH
Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
If the amount of the steam used in steam distillation is increased, the temperature of distillation
A Increases
B Decreases
C Remains unchanged
D Depends on relative volatility
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A 5-10
B 30-80
C 150-250
D 350-400
A manufacturer sells three products i.e. A, B and C. Product A cost 200 and sells for 250, Product B costs 150 and sells for 180, Product C costs 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only
A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product B costs 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?
A B only
B A and B both
C A only
D C only

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