DAY 1 CHEM ENG BOARDS - PT. 3 (201-
300) CHEMICAL ENGINEERING
QUESTIONS AND VERIFIED
ANSWERS|100% CORRECT|GRADE A+
The Kinetic energy of gas molecules
A) is unaffected by temperature variations
B) decreases with increase of temperature
C) increases with decrease of temperature
D) increases with increase of temperature - ANSWER D
Ozone hole refers to
A) Decrease in the thickness of ozone layer in Stratosphere
B) Increase in thickness of ozone layer
C) Decrease in the ozone layer in Troposphere
D) Hole in the ozone layer - ANSWER A
When the nucleus of Uranium is bombarded with neutrons, it breaks up into two nuclei of nearly equal
mass. this process is called
A) nuclear fission B) nuclear fusion
C) physical change D) artificial radioactivity - ANSWER A
A yellow element that stinks when burned
A) Sulphur B) Chlorine
C) Fluorine D) Bromine - ANSWER A
,What is the bond order of N2+?
A) 3 B) 1.5
C) 2.5 D) 2 - ANSWER C
Which one is the compound in the following
A) mercury B) ozone
C) air D) ammonia - ANSWER C
Number of moles of CO2 present in 24 grams of carbon is
A) 0.5 B) 1
C) 2 D) 0.25 - ANSWER C
A mixture of ethyl alcohol and water can be seperated by
A) evaporation
B) sublimation
C) using a seperating funnel
D) fractional distillation - ANSWER D
Alum is used
A) as an analgesic
B) in the purification of water
C) as a fertilizer
D) as a disinfectant - ANSWER B
, Rutherford's alpha-scattering experiment related to the size of the
A) nucleus B) atom
C) electron D) neutron - ANSWER A
Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the
A) Law of Multiple Proportions
B) Law of Definite Proportion
C) Law of Conservation of mass
D) Law of Reciprocal Proportions - ANSWER B
Which of the following definitions describes a chemical hazard?
A) Microorganisms, such as bacteria, fungus, mold, or viruses that can cause illness
B) These hazards can lead to injuries to the joints or muscles by way of heavy, frequent lifting, repetitive
tasks
C) Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or
released during a construction job
D) The most commonly thought of hazards for construction - ANSWER C
Which of the following is the mixture
A) distilled water B) gasoline
C) liquified petroleum gas D) both (b) & (c) - ANSWER D
Which compound forms a colored aqueous solution?
300) CHEMICAL ENGINEERING
QUESTIONS AND VERIFIED
ANSWERS|100% CORRECT|GRADE A+
The Kinetic energy of gas molecules
A) is unaffected by temperature variations
B) decreases with increase of temperature
C) increases with decrease of temperature
D) increases with increase of temperature - ANSWER D
Ozone hole refers to
A) Decrease in the thickness of ozone layer in Stratosphere
B) Increase in thickness of ozone layer
C) Decrease in the ozone layer in Troposphere
D) Hole in the ozone layer - ANSWER A
When the nucleus of Uranium is bombarded with neutrons, it breaks up into two nuclei of nearly equal
mass. this process is called
A) nuclear fission B) nuclear fusion
C) physical change D) artificial radioactivity - ANSWER A
A yellow element that stinks when burned
A) Sulphur B) Chlorine
C) Fluorine D) Bromine - ANSWER A
,What is the bond order of N2+?
A) 3 B) 1.5
C) 2.5 D) 2 - ANSWER C
Which one is the compound in the following
A) mercury B) ozone
C) air D) ammonia - ANSWER C
Number of moles of CO2 present in 24 grams of carbon is
A) 0.5 B) 1
C) 2 D) 0.25 - ANSWER C
A mixture of ethyl alcohol and water can be seperated by
A) evaporation
B) sublimation
C) using a seperating funnel
D) fractional distillation - ANSWER D
Alum is used
A) as an analgesic
B) in the purification of water
C) as a fertilizer
D) as a disinfectant - ANSWER B
, Rutherford's alpha-scattering experiment related to the size of the
A) nucleus B) atom
C) electron D) neutron - ANSWER A
Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the
A) Law of Multiple Proportions
B) Law of Definite Proportion
C) Law of Conservation of mass
D) Law of Reciprocal Proportions - ANSWER B
Which of the following definitions describes a chemical hazard?
A) Microorganisms, such as bacteria, fungus, mold, or viruses that can cause illness
B) These hazards can lead to injuries to the joints or muscles by way of heavy, frequent lifting, repetitive
tasks
C) Can be present in dust, fumes, liquids, solids, mists, vapors, or gases of products used at a site or
released during a construction job
D) The most commonly thought of hazards for construction - ANSWER C
Which of the following is the mixture
A) distilled water B) gasoline
C) liquified petroleum gas D) both (b) & (c) - ANSWER D
Which compound forms a colored aqueous solution?
