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ChE PBE > MAY 2016 > Flashcards

MAY 2016 Flashcards

To pass the board exam

1
Q

May kwento about sun energy. Which ferric ions are paramagnetic?

A. All except Fe+8 and Fe+14
B. All except Fe+3 and Fe+

A

B- Paramagnetic are compounds that contain one or more unpaired e- and are attracted to the poles of magnet

A- Diamagnetic- all are paire

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2
Q

Which is true about the effect of alpha, beta and gamma rays to the atomic number?

A. 0,1,2
B. 0,0,1

A

A

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3
Q

Animals stored energy in glycogen, plants stored in starch . What is the difference of their structure?

A
  • Starch- sugar molecules are linked together in same interval
  • Glycogen- branching chains
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4
Q 
Situational 
You are an employee of a famous restaurant and you discovered that they put nitrates to the bacon as preservative. According to your research, these nitrates are carcinogenic when heated. What will you do?
I. Report to your employer
II. Spread the news
III. Remain Silent

A. II only
B. III only
C. Both I and II
D. Both I anD III

A

D

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5
Q

Who discovered radioactivity?

A

Becquerel

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6
Q

Who discovered vulcanization?

A

Goodyear

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7
Q

Common structure of malic acid and lactic acid?

A

Pyruvate

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8
Q

Rank the toxicity

DDT, Heptachlor, Dieldrin, Arsenic, Chromium

A
  1. Arsenic
  2. DDT
  3. Dieldrine
  4. Heptachlor
  5. Chromium
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9
Q

Molecular Weight of Lindane (C6H6Cl6)?

A

290.8 g/mol

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10
Q 
If the ratio of Neutron to proton is 1, it is stable. If the ratio is greater than 83, it is radioactive. Which of the ff. are radioactive?
A. Pa
B. Sn
C. Mg
D. Zn
A

Pa

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11
Q

AMU is derived from?

A

1/12 bla bla of of Carbon 12

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12
Q

An atom is considered radioactive if the ratio of atomic number is?
A. > 75
B. > 83
C. Between 80 to 100

A

B

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13
Q

The process involve in the refrigerator

A

Gas to Liquid

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14
Q

What is more soluble?

ROH (Alcohol) or RSH ( Thiol)

A

ROH

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15
Q

Reaction of Acid and Alcohol

A

Esterification

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16
Q

How many hydrogen bonding are there in Uracil and Adenine?

A

Ans. Two Hydrogen Bonds- (Adenine and Uracil), (Adenine and Thymine)

*Three Hydrogen Bonds - (Guanine and Cytosine)

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17
Q

What is Sigmatropic Rearrangement?

A

Molecular rearrangement in which alpha
bonded atom or group, flanked by one or more Π electron system shift to a new location w/ a corresponding reorganization of Π-bonds

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18
Q

What is the function of EDTA (Ethylenediaminetetraacetic acid ) in meat industry?

A

Food Additive or help to preserve food

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19
Q

What is the sub atomic particle of a Nucleus?

A

Proton and Neutron

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20
Q

What is the molecular weight of 1,1-tetradecenyl acetate?

A 
From Sec. 2 HB
Tetradecane - 198.39
Acetic Acid - +  59. 05
-------------------------------
Total: 257.44 gram/mol
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20
Q

What is the molecular weight of 1,1-tetradecenyl acetate?

A 
From Sec. 2 HB
Tetradecane - 198.39
Acetic Acid -   +   59.05
--------------------------------------
Total: 257.44
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21
Q 
Which number gives the identity of an element? 
A. Electron
B. Positron
C. Proton
D.Neutron
A

C

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22
Q

What is the molecular formula of Cumene?

A

C9H12

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23
Q

What is Radioactivity?

A

The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei

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24
Q

What is nuclear fission?

A

Fission - Splitting

*Fusion - Combine

25
Q

What is the degrees of freedom of water at Triple point?

A

Zero

26
Q

Three Beakers w/ CCl4, water and dry ice. Which beaker will absored heat?

A

Google mo Girl

Hint: Dipole Moments

27
Q 
Methyl Bromide was banned in developing countries in 2005. When will this be phase out? 
A. 2010
B. 2015
C. 2020
D. 2025
A

Google but na discuss sa mrii

28
Q

Rank the bond strength of acetic acid
A. C-O > C=O and C-C < C-H
B. C-C < C-Oand C=O>C-C

A

google mo girl

29
Q 
Given the table of log Kow vs. solubility rank according to higher bioconcentration?
A. (High log Kow) is the highest
B. (Low log Kow) is the highest
C. (high solubility) is the highest
D. (Low Solubility) is the highest
A

Ask Google

30
Q 
With the presence of H+ and heat which of the ff. is the reactant to produce alkene? 
A. Structure of Alkane
B. Structure of Halide
C. Structure of Aldehyde
D structure of carboxylic acid
A

Hint: Reaction Mechanism org chem

Google mo Girl

31
Q

Given combination of solution Ag2CO3 and CaCl2, NaCl2 and PbSO4 nkalimutan ang isa. Which of the ff. will form precipatate?
A. P/NP/P
B. NP/NP/P
C. NP/P/P

A

Be ready sa mga ganitong tanong.

Hint Study Solubility Rules in Solution☺

32
Q 
Day 2
What chemical used in pesticide derive from a type of Chrysanthemum?
A. Pyrethoid
B. Pyrethrin
C. Carbophox
A

B

33
Q

Define Joule Thompson Effect

A

At near room temp. all gases except Hydrogen cools.

*Hydrogen ->Heating

34
Q

Define Corresponding States?

A

According to Van der Waals theorem, indicates that all fluids when compared at the same refuced temp. and reduced pressure have app. the same compressibility factor.

35
Q 
Which equipment is non-propriety? 
A. Distillation Column
B. Centrifuge
C. Pumps
D. Compressors
A

A

*The rest are proprietary equipment (exclusive rights under manufacture)

35
Q

Ex of equipment which is non-propriety?

A

Distillation Column

35
Q 
Give example of proprietary equipment
A. Distillation Column
B. Centrifuge
C. Pumps
D. Compressors
A

B, C, D

35
Q

Section at the bottom of feed plate?

A

Stripping

35
Q

What chemical used in pesticide pesticide derive from a tyoe of Chrysanthemum?

A

Pyrethrin

36
Q

PIONA stands for?

A 
Parrafins
Isoparrafins
Olefins
Naphthene
Aromatics
37
Q

MWCO standa for?

A

Molecular
Weight
Cut
Off

38
Q

SCADA Stands for?

A 
Supervisory
Control
And
Data
Acquisition
39
Q

Parts of Perfume is called?
A. Aromatics
B. constituents
C. Essence

A

C

40
Q

Reason of Multiple Shell and Tube HE?

A
  • Size- larger surface area for heat transfer
  • Heat Duty - can handle higher temp. and pressure
  • versatility- most versatile
41
Q

Most important role of Boltzman constant in physics and Ideal gas?

A

Bridge

42
Q

Difference of integral to differential control?

A

The difference is in the interval in w/c it operates.

  • Differential- looks error at an instant
  • Integral- looks error over interval before raising the input
43
Q

Commonly used controller?

A

PID - Proportional Integral Derevative

44
Q

Define Austenitic metal?

A

Type of SS that is 16-26% chromuim & up to 35% nickel and have the highest corrosion resistance.

45
Q

Describes local equilibrium?
A. Explosion
B Steam Boiler
C. Shockwave

A

B

46
Q

Define galvanic corrosion?

A

A process in w/c one metal corrodes when electrically contact w/ another in presence of electrolyte.

47
Q

Which theory is under membrane sepa?
A. solute precipitation
B. flux paradox
C. two film theory

A

C

*Film theory- Nernst postulated that near the interface there exist a stagnant film

48
Q

Veocity gradient is equal to zero when
A. Viscous sublayer
B. Turbulent Core
C. Boundary Layer

A

C

49
Q

Hardness of lime
A. more Calcium
B. Hydraulic Hydrated
C Dolomine

A

B

50
Q 
Determine the approximate cost of the project prior to the preparation of flowsheets to set a rapid estimate of the investmen that is likely to be required?
A. ROI (Return of Investment)
B. EBITDA (Taxes)
C. Six Tenth rule
D. Payback period
A

C

51
Q

What motion is parallel to the gravitational force that push the particle to other angle?

A

Two dimensional motion

52
Q 
What is the section at the top of feedplate?
A. Condenser
B  stripping
C. Reboiler
D. Rectifying
A

D

53
Q

Closed system that produce maximum work?
A. cyclic
B. Equilibrium
C. Irreversible

A

Cyclic (reversible process)

54
Q

Limitation of UNIFAC (Universal quasichemical Functional group Activity Coefficient)

A

Ans. Limitation is that group parameters for a specific estimation IS NOT AVAILABLE

*UNIFAC uses the functional groups present on the molecules that make up the liquid mixture to calculate activity coefficient

55
Q

What is used in ultrasonic flow meters?

A

Doppler

ChE PBE (1 decks)

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