PAST BOARDS 2015

Question 1

Define DNA and RNA

Answer 1

Deoxyribonucleic Acid and Ribonucleic Acid

Question 2

Zoological Question

Why trouts like to live in cold water?

Answer 2

Trouts are cold blooded.

Their metabolism slows down in cold water than in warm water

Question 3

When will a pine tree grow in Alaska?
A. Not in a million years
B. It depends on the carbon dioxide
C. Greenhouse effect
D. All of the above

Answer 3

A. Not in a million years

Question 4

What is the unit of avogadros number?

Answer 4

Atoms/mol

Question 5

Which of the ff. involves a chemical reaction?
A. Reaction of Nonmentals
B. Oxidation Reduction

Answer 5

Oxidation Reduction

Question 6

Define zeroth law of thermodynamics?

Answer 6

When two bodies are in thermal equilibrium with some third body, then they are also in equilibrium w/ each other

Question 7

Differentiate electromagnetic waves and radiation?
A. Wavelength
B. Photons
C. Frequency
D. Energy

Answer 7

Photons

Question 8

Similarities between malic acid and citric acid

Answer 8

Carboxylic acid

Question 9

What is the diprotic nature of oxalic acid?

Answer 9

Diprotic nature of oxalic acid (H2C2O4) have two acidic hydrogen atoms

Question 10

Who discovered theory of resonance?

Answer 10

Linus Pauling

Question 11

If you are a chemical engineer and in the cement industry, how will you collect dust?

Answer 11

ESP or Electrostatic Precipitator

Question 12

Process of inventing new genetic information into existing cells inorder to modify a specific organism for the purpose of changing its characteristics

Answer 12

Genetic Engineering

Question 13

Plays a major role in large scale production of biochemical products by applying the principles of engineering to the activity of living cells

Answer 13

Biochemical Engineering

Question 14

How is something made polar?

Answer 14

Difference between electronegativity is less/greater than 2.1

Question 15

What is Arrhenius base and acid equilibrium?
A. 0.01 M with pK 1.8
B. 0.1 M of weak acid and 0.01 M of the same acid
C. 0.1 M of acid and 0.1 M of base

Answer 15

Arrhenius acid- a substance that dissociates in water to form hydrogen ions (H+)
Arrhenius base- a substance that dissociates in water to form hydroxide (OH-)

Question 16

Why does carbon have a lot of alkyl substituent possibilities?
A. Four potentials of sharing (due to valence )
B. Cyclo/linear characteristics

Question 17

What will you do to protect iron from corrosion?

Question 18

How many neutrons are there in C-14?

Question 19

Instrument used in measuring radiation?

Question 20

What will you put in the thermocouple to increase the accuracy of the reading?

Question 21

What instrument is used in measuring temperature without contact with the fluid or vessel?

Question 22

Filter that you can remove the plates and stuff

Question 23

Kind of flow that is imaginary?
A. One dimensional
B. Turbulent
C. Multi-dimensional
D. Viscous

Question 24

Chemical Name of Sylbite

Question 25

If you are an engineer where would you base your operations?