PAST BOARDS (DAY 1) Flashcards

1
Q

What is the most toxic from the following compounds: Carbon Tetrachloride, 1,2-Dichloroethylene, 1,2 Dichloropropylene, Vinyl Chloride.

A

Carbon Tetrachloride

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2
Q

Chemical formula of Lindane

A

C6H6Cl6

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3
Q

constitutional isomers

A

are compounds that have the same molecular formula and different connectivity.

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4
Q

Given the following temperature profiles, determine whether the atmosphere is unstable, neutral or stable.
Z(m) T(℃)
2 -3.05
318 -6.21

A

neutral

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5
Q

The Pressure at 0.12 km above the ground of Pangasinan is 755 torr. What is the partial pressure of oxygen?

A

(0.21)(755) = 158.55 mmHg

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6
Q

Sun glasses are the perfect example in Applying Le Chatelier’s principle, given different reactions of AgCl

A

AgCl (light) + energy > Ag (dark) + Cl

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7
Q

Carboxylic acid then H is replaced by alkyl group

A

Esterification

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7
Q

Discovered Radioactivity

A

Henri Becquerel

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7
Q

Which is considered Radioactive ?

A

Atomic Number above 83

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8
Q

Definiton of Amu

A

1/12 the mass of an atom of Carbon 12

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9
Q

What is the volume of 0.125M H2SO4 solution is required to
neutralize 25.21ml of 0.540M NaOH?

A

54.5mL

(0.125M)(2)(V of Acid) = (25.21ml)(0.540M NaOH)

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10
Q

A 48.4ml sample of HCl solution requires 1.240 g of pure CaCO3 for complete neutralization. Calculate the Normality of Acid.

A

0.512N

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11
Q

Atomic mass number

A

proton + neutron

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11
Q

Invent Vulcanized rubber

A

Goodyear

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12
Q

Alpha particle decreases atomic number by ___
Beta particle decreases atomic number by ___
Gamma decreases atomic number by ____.

A

2,1,0

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13
Q

Chemical Formula of Styrene

A

C6H5CHCH2

14
Q

Fatty acids, if -CH2- becomes longer what will happen to its melting point?

A

Increase

15
Q

Molecular Weight of Sucrose

A

C12H22O11

16
Q

27,000 barrels to L oil

A

4,293,000 L oil (Conversion: 1 barrel = 159 L oil )

17
Q

Given nanometer of micoorganism How to explain it in layman’s term:
A. Time when the beard of man’s face grow after a month
B. A drop in a bucket
C. A marble on earth

A

C. A marble on earth

18
Q
A