Day 1 (Take Lightly)

Question 1

In the study of fats and lipids,
determine which of the two triglycerides has a higher melting point?
Substance A – Lauric Acid and Glycerol
Substance B – Stearic Acid and Glycerol

A: Substance A
B: Substance B
C: Their Melting Points are equal
D: Insufficient Information

Answer 1

B: Substance B

Question 2

Sherwood Roland and Mario Molina’s work on stratospheric ozone depletion garnered them the 1995 Nobel Prize in Chemistry. Which among the following species did they determine act as a catalyst for the decomposition of ozone?

A: Refrigerants
B: CClF3
C: Nitrogen Oxides
D: Chlorine Atoms

Answer 2

D: Chlorine Atoms

Question 3

For a criminal case, two men are interrogated in regards to an attempted poisoning of a police officer. During the investigation, it was found out that both men had traces of Polonium-210 on their hands while a third accomplice of theirs had Po-210 on his clothes. Through analysis of the police officers stomach content, it was confirmed that he had ingested Po-210. Which among them is likely to die if not properly treated?

A: The police officer only
B: The two men and the third accomplice
C: The police officer and the two men
D: All four individuals

Answer 3

A: The police officer only

Question 4

Which among the following set of reagents should be applied on 3-ethyl-2-pentene to produce 3-ethyl-2-pentanol as the major product?

A: 50% Sulfuric Acid; 50% Water
B: Br2, CCl4
C: [a] B2H6, diglyme [b] H2O2, NaOH
D: HCl, C6H6

Answer 4

C: [a] B2H6, diglyme [b] H2O2, NaOH

Question 5

What are the two most common components of acid rain?

A: Phosphoric Acid and Carbonic Acid
B: Sulfuric Acid and Nitric Acid
C: Oxalic Acid and Sulfuric Acid
D: Nitric Acid and Phosphoric Acid

Answer 5

B: Sulfuric Acid and Nitric Acid

Question 6

Which among the following describes the irreversible effect of toxicants to cause birth defects:

A: Nephrotoxic
B: Mutagen
C: Teratogen
D: Hemotoxic

Answer 6

C: Teratogen

Question 7

Determine the percent atom economy of the Raschig Process.

A: 17.3%
B: 22.4%
C: 34.7%
D: 46.5%

Answer 7

A: 17.3%

Question 8

Which among the following statements is true regarding Sb-122 and Xe-136?

A: Sb-122 is more stable than Xe-136 because of its atomic number
B: Xe-136 and Sb-122 are radioactive
C: Xe-136 is more stable than Sb-122 because of the amount of its neutrons.
D: Sb-122 and Xe-136 are both stable.

Answer 8

C: Xe-136 is more stable than Sb-122 because of the amount of its neutrons.

2, 8, 20, 50, 82, (126-neutron only)

Magic Numbers for protons and neutrons

Question 9

Which among the following is comprised of polyhydroxyaldehydes, polyhydroxyketones, or compounds that will yield them upon hydrolysis?

A: Proteins
B: Carbohydrates
C: Amino Acids
D: Lipids

Answer 9

B: Carbohydrates