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PBE > PBE NOV 2012 > Flashcards

PBE NOV 2012 Flashcards

1
Q

What is the chemical formula and molecular weight of 11-tetradecenyl Acetate?

A

C16-H30-O2

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2
Q

What is the product when ethanoyl chloride is reacted with propanol?

A

Propane ethanoate and HCl

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3
Q

What is the primary use of ethylene?

A

Ripening of fruits

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4
Q

What is the common contaminant in the BTEx process?

A

Search muna.

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5
Q

Where does an enzyme capsaicin commonly found?

A

capsicum

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6
Q

What is the other name of bulk temperature?

A

Mixing-Cup Temperature

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7
Q

Choose the common methods in the removal of fine particle in hot airstream common in cement production?

a) ESP
b) Bouyancy
c) Cyclone
d) Venturi Scrubber

A

d) Venturi Scrubber

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8
Q

What is the method that Wohler do to break the vital force theory in nature?

A

Heating of NH4Cl with AgCN to form Urea

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9
Q

Arrange the following substance in terms of increasing melting point: Palmitic, Palmitic, Stearic; Palmitic, Oleic, Stearic; Oleic, Oleic, Stearic.

A

Oleic, Palmitic, Stearic

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10
Q

What is the common form of nitro-glycerol?

A

Trinitroglycerin, Nitroglycerin or Nitrate Vasodilator

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11
Q

Definition of polar covalent

A

a) Unbalance electron with unequal sharing of electrons

b) Bonding of heteronucleus with unequal sharing of electrons

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12
Q

What happen to the pH of carbonated drinks if it open in atmospheric condition?

a) Increase
b) Decrease
c) Same
d) Cannot be determined

A

b) Decrease

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13
Q

What is the most polar and least polar of the following functional groups: R-OH, R-NH3, R-COOH, C triple bond C and C-C.

A

Most Polar-C-C

Least Polar- C triple bond C

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14
Q

The range of melting point of the fatty acids.

A

saturated fatty acid- 100 to 110°C

unsaturated- 70 to 85°C

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15
Q

What happen to the enthalpy content of the real gases when it is throttled at constant temperature?

A

Stays constant.

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16
Q

What is the difference between catabolism, anabolism and metabolism?

A
  • METABOLISM is a set of processes performed by the living beings that allow them to interchange MATTER and ENERGY with their environment.
  • The phase that consists of the DISINTEGRATION of complex organic compound to release energy is known as CATABOLISM, whereas the phase that consists of the ARRANGEMENT of organic compounds from simpler compounds to store energy is called ANABOLISM.
17
Q

What law is the PRC modernization act?

A

RA NO 8981

18
Q

Choose whether the following is/are representation of the nuclear fusion:
The big bang theory, the radiant energy of the sun, the formation of deuterium/tritium.

A
  • big bang theory
  • formation of deuterium (from H) /tritium (from Li)
  • radiant energy of the sun
19
Q 
What unit operation originated in Trona Process?
o Fractional Distillation
o Crystallization
o Evaporation
o Phase Rule
A

o Crystallization

20
Q

Based on the following reactions, choose the Hagreave’s process.

A

Production of Sodium Sulfate

21
Q

In the calculation of the compressibility factor, which of the following equations apply for a high pressure condition

A

Ans: Z=1 + BP/RT

22
Q

If the concentration of the reactant increases, the half life decreases, what order of the reaction is this?

A

2nd order

23
Q

Which of the following is the reaction time is directly proportional to the concentration of the reactant?

A

Zero order

24
Q 
Which of the following process uses the MIMO system in controlling their process parameter?
o Distillation
o Extraction
o Evaporation
o Crystallization
A

o Distillation

25
Q

How is the fluctuation in the process is controlled?

A

Equipping the instrument with integral controller

26
Q

Definition of noise in the process control.

A

Noise makes the process variable appear to deviate from the setpoint whether any real disturbance is at work or not.

27
Q

What do yu call the temperature in which the reactor condition cannot be controlled?

A

Runaway Temperature

PBE (5 decks)

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