Chemical Energy Past Paper 2020
1: A
fluid means:
A. Liquid
only
B. Gas
only
C. Solid
only
D.
Both
a and b
2: “µ”
stands for the fluid:
A. Density
B. Velocity
C.
Viscosity
D. None
of the above
3: PH of water is:
A.
7.9
B.
13
C.
4.9
D.
7
4: Which pH corresponds to acid?
A.
14
B.
9
C.
7
D.
3
5: Oxidation occurs at?
A.
Cathode
B.
Anode
C.
Both a and b
D.
None of these
6: Temperature at which a solid change
into a liquid is called:
A.
Boiling point
B.
Melting point
C.
Freezing point
D.
None of the above
7: Hydrocarbons are compounds formed form:
A.
H & O
B.
C & O
C.
C & H
D.
C & Ag
8: MOLARITY is:
A.
It is the no of moles
of the solute dissolved per liter of the solution
B.
It is the no of atoms
of the solute dissolved per liter of the water
C.
It is the no of moles
of the water dissolved per liter of the solution
D.
None of above
9: What is the correct formula of heavy
water?
A. H2O2
B. H2O
C. D2O
D. D3O
10: What happens in the nuclear reactor?
A.
Fusion
B.
Fission
C.
Chemical reaction
D. None of above
11: Which of the
following is/are example(s) of rotary positive displacement pump(s)?
A.
Diaphragm pump
B.
Vane pump (not confirm)
C.
Plunger pump
D. All of the above
12: Horsepower requirement for given pump
capacity depends upon the:
A.
Specific gravity of
the liquid
B.
Suction lift
C.
Discharge head
D.
All of the above
13: The monomer of PVC is:
A.
Succinic
B.
Vinyl chloride
C.
Propylene
D.
Glycol
14: Turbulent flow exists, when Reynolds No.
exceed?
A.
2100
B.
2200
C.
2000
D.
1900
15: Law of conservation of matter states
that:
A.
Total mass of all
materials entering a system in a given time must equal the total mass of
materials leaving plus any accumulation in the system
B.
Total mass of all
materials entering a system in a given time must equal the total mass of
materials leaving from the system
C.
Total mass of all
materials entering a system in a given time must not equal the total mass of
materials leaving plus any accumulation in the system
D.
None of A, B & C (I think)
16: What happened in endothermic Reaction?
A.
Heat is evolved
B.
Heat is absorbed
C.
No heat is evolved
D. No heat is absorbed
17: What is ion exchange process?
A.
Ion Exchange system
separate ionic contaminants from solution through a specialized resin where
undesirable ions are replaced by other ions of the same electrical charge.
B.
Ion Exchange system
mixes ionic contaminants from solution through a specialized resin where
undesirable ions are replaced by other ions of the same electrical charge.
C.
Ion Exchange system
dissolves ionic contaminants from solution through a specialized resin where
undesirable ions are replaced by other ions of the same electrical charge.
D.
Ion Exchange systems
leach ionic contaminants from solution through a specialized resin where
undesirable ions are replaced by other ions of the same electrical charge.
18: Rotary drum vacuum
filter consists of a drum rotating in a tub of liquid to be filtered. The
technique is well suited for which of the following types of materials?
A.
Slurries and liquids
with a high solid content
B.
Gases with a high
solid content
C.
Slurries only
D.
Gases and liquids with
a high solid content
19: Drying is a mass
transfer process consisting of the removal of water or another solvent by
evaporation from which of the following type of materials?
A.
Solid & semi-solid
materials
B.
Gaseous materials only
C.
Amorphous materials
D.
Liquid materials only
20: Size reduction is a
process of reducing large solid unit masses into small unit masses, coarse
particles or fine particles. This process is also termed as?
A.
Diminution
B.
Pulverizations
C.
Both A & B
D.
None of A & B
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