PAST BOARDS: 2012

Question 1

Chemical formula and molecular weight of

1,1-tetradecenyl acetate?

Answer 1

C16H30O2 ( 254 gram/mol)

Question 2

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

Answer 2

Ethyl Ethanoate (Ester)

Question 3

What is the primary use of ethylene?

Answer 3

Ripening of Fruits

Question 4

What is common contaminant in the BTEX process?

Answer 4

Benzene
Toluene
Ethyl Benzene
Xylene

Question 5

Where does enzyme capsaicin commonly found?

Answer 5

Capsicum (Chilli)

Question 6

What is the other name of bulk temperature?

Answer 6

Mixing cup temperature

Question 7

Choose the common method in removal of fine particles in hot airstream common in cement production?

Answer 7

ESP

Question 8

What is the method that Wohler do to break the vit force theory on nature?

Answer 8

Heating of NH4Cl with AgCN to form Urea

Question 9

Arrange the ff. substance in terms of increasing melting point?
Palmitic, Stearic, Oleic

Answer 9

OPS
Oleic (16)
Palmitic (63)
Stearic (70)

Question 9

What is the common form of nitro glycerol?

Answer 9

Nitroglycerine- colorless oily liquid w/ no odor

Question 10

Unbalance electron w/ unequal sharing of electrons?

Answer 10

Polar Bond

Question 11

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

Answer 11

RCOOH>ROH>RNH3>C triple bond C > C-C

Question 12

The range of melting point of fatty acids?

Answer 12

Saturated F.A.- 100-110 degree C

Unsaturated F.A.- 70-85 degree C

Question 13

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

Answer 13

Decrease

Question 14

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

Answer 14

△H= 0 , CONSTANT

Question 15

Define metabolism, catabolism and anabolism?

Answer 15

Metabolism is a set of processes performed by the living beings that allow them to interchange matter and energy with their environment.

Catabolism is the breakdown of molecules to extract energy, whereas anabolism is the assembly of complex molecules by capturing energ

Question 16

What law is PRC Modernization act?

Answer 16

RA 8981 (repealed PD 223

Question 17

Choose whether the ff. is/are represents nuclear fusion?
A. BIGBANG
B. Radiant Energy of the sun
C. formation of deutrium/tritium
D ALL

Question 18

Match the ff. nuclear reaction
I. Artificial Radioactivity
II. Induced Radioactivity
III. Hydrogen Fusion Reaction
IV. Natural Radioactivity

Answer 18

Artifical Radioactivity = Induced Radioactivity

Hydrogen Fusion Reaction (in Sun) = Natural Radioactivity

Question 19

What unit operation originated in Trona Process?
A. Fractional Distillation
B. Crystallization
C. Evaporation

Question 20

What is Hagreave’s Process?

Question 21

In the calculation of compressibility factor which of the ff. equations apply for a high pressure condition?

Question 22

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

Question 23

If the reaction time is directly proportional to the concentration of the reactant the order is?

Question 24

Which of the ff. uses MIMO (Multiple Input, Multiple Output) system is controlling their process?
A. Distillation
B. Extraction
C. Evaporation

Question 25

How is fluctuation in the process is controlled?

Question 26

Group of sound w/ many non harmonic frequency components of varying amplitudes and random phase?

Question 27

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