1.
With increase in impurities in metals, their
corrosion resistances
A)
Increase
B)
Decrease
C)
Remain same
D)
May increase or decrease; depending on the type of
metal
2.
The most important requirement for aluminium
industry is the availability of cheap
A)
Ore B)
Electrical power
C) Labour D)
Abundant water
3.
Neutrons are present in all atoms except that of
A)
He B)
C C)
H D)
Ar
4.
The Fourier number (defined as a.t/L2)
is used in the analysis of problem involving heat transfer by
A)
Forced convection
B)
Natural convection
C)
Transient conduction D)
Steady state conduction
5.
For gases, the thermal conductivity increases with
temperature rise. For liquids, with increase in concentration, its thermal
conductivity generally
A)
Decreases B)
Increases
C)
Remains unchanged D)
Increases exponentially
6.
Among liquids, water has a comparatively high value
of thermal conductivity, due to its
A)
Low density B)
High viscosity
C)
Partial ionisation D) Dense structure
7.
Pick out the wrong statement.
A)
The mole fraction of solute is directly proportional to
the molality of a 'dilute' solution
B)
For a non-reacting binary mixture of ideal gases, the
partial pressure distribution of
both components is nonlinear in the case of steady state unimolal unidirectional diffusion.
C)
Azeotropes obey Raoult's law at all temperature.
D)
The relative volatility of a binary mixture at the
azeotropic composition is 1.
8.
Leaching of sugar from sugar beets is done by
A)
Hot water B)
Hexane
C) Dilute H2SO4 D)
Lime water
9.
What is the reflux ratio at total reflux?
A)
Zero B)
Infinity C) Unity D) Data insufficient
10. Commercial
fertilisers are available mostly in the form of
A)
Powder B) Granules C) Lumps D)
Flakes
11. Reaction
of dilute sulphuric acid with phosphate rock produces
A)
Phosphoric acid B)
Superphosphate
C)
Triple superphosphate D)
Gypsum
12. Liquid
ammonia is not used as such a fertiliser in tropical countries like India,
because
A)
Its N2 content is very low B)
It is very costly
C)
It will evaporate on spraying D)
It is not available
13. Internal
energy change of a system over one complete cycle in a cyclic process is
A)
Zero B)
+ve C)
–ve D)
dependent on the path
14. Out
of the following refrigration cycles, which one has the minimum COP
(Co-efficient of performance)?
A)
Air cycle
B)
Carnot cycle
C)
Ordinary vapour compression cycle
D)
Vapour compression with a reversible expansion engine
15. "At
the absolute zero temperature, the entropy of every perfectly crystalline
substance becomes zero". This follows from the
A)
Third law of thermodynamics B) Second law of thermodynamics
C)
Nernst heat theorem D) Maxwell's relations
16. Which
of the following is a thermodynamic property of a system?
A)
Concentration B) Mass C)
Temperature D) Entropy
17. While
dissolving a gas into a liquid at a constant temperature, the ratio of the
concentration of the gas in the solution phase and in the gaseous phase is
A)
Infinity B) Unity C) Constant D)
Negative
18. Which
of the following exemplifies an adiabatic process?
A)
Melting of ice B)
Condensation of alcohol vapor
C)
Sudden bursting of a cycle tube D)
Evaporation of water
19. During
combustion of gaseous fuels, deficiency of air
A)
Lengthens the flame
B)
Tends to shorten the flame
C)
Does not affect the flame length
D)
Increases the flame temperature
20. Low
temperature carbonisation
A)
Is mainly for producing the smokeless domestic coke
B)
Is meant for the production of 'metallurgical coke'
C)
Produces higher quantity of gas than high temperature
carbonisation D) Produces less quantity of tar
than high temperature carbonisation
21. Main
constituents of purified Lurgi gas are
A)
H2, CmHn & CO2
B) CO, H2 & CH4
C)
CO2, O2 & CO D) N2, H2
& CO2
22. The
cuprous chloride used in orsat apparatus can absorb
A)
Only CO B)
Both CO and CO2
C)
Both CO and O2 D) all CO, CO2, and O2.
23. Which
of the following is a lean fuel gas?
A)
Coke oven gas B)
LPG
C)
Blast furnace gas D) Natural gas
24. Fireclay
bricks are not used in the
A)
Beehive coke oven
B)
By-product coke oven walls C) Combustion chamber of B.F. stoves D) Coke oven regenerators.
25. Caprolactum,
a raw material for the manufacture of nylon-6, is produced from
A)
Phenol B)
Naphthalene C) Benzene D) Pyridine
26. The
monomer of poly vinyl chloride (PVC) is
A)
Chloroethene B)
Ethylene dichloride
C)
Ethyl chloride D)
Chloroform
27. Buna-S
is also known as
A)
Teflon B) PTFE C) SBR D) Polycrylates
28. Automobile
steering wheels are normally made of
A)
Cellulose acetate B)
Cellulose nitrate
C)
PVC D) High density polythene
29. In
a cross linked polymer, the monomeric units are linked together to constitute a
three dimensional network. Which of the following is a cross-linked polymer?
A)
Bakelite (phenol formaldehyde) B) Polyester
C)
Polythene D) Nylon-6
30. Polymethyl
methacrylate (PMMA) is known as
A)
Bakelite B)
Teflon C)
Perspex D)
Nylon-6
31. Neoprene
is the trade name of
A)
Polyurethane B)
Phenol formaldehyde
C) Polychlorophrene D)
Styrene butadiene rubber (SBR)
32. Epoxy
resin is
A)
Not used for surface coating B) A good abrasive
C)
An elastomer D)
A polyester
33. The
major component of acrylic fibres is
A)
Polyamides B)
Polyolefins
C) Polyacrylonitrile D)
Polyesters
34. Which
is the most undesirable component in kerosene?
A)
Aromatics B)
i-paraffins
C)
n-paraffins D) Naphthenes
35. Which
of the following fractions of a crude oil will have the maximum gravity
API (i.e. °API)?
A)
Diesel B)
Gasoline
C)
Atmospheric gas oil D)
Vacuum gas oil
36. Pour
point and freezing point is equal for
A)
Petrol B) Diesel
C)
Water D)
Crude petroleum
37. Visbreaking
process is used mainly for making
A)
High cetane diesel
B)
High octane gasoline
C)
Fuel oil D)
Smoke free kerosene
38. Stabilisation
of gasoline (petrol) means
A)
Removal of dissolved gases from it
B)
Increasing its oxidation stability
C)
Improving its lead susceptibility
D)
Increasing its vapour pressure
39. In
petroleum refining, the process used for conversion of hydrocarbons to
aromatics is A) Catalytic cracking B)
Catalytic reforming
C)
Hydrotreating D) Alkylation
40. Octane
number of gasoline is a measure of its
|
A)
Resistance to knock
|
B) Ignition delay
|
|
C)
Ignition temperature
41. Catalyst used in catalytic
reforming is
|
D) Smoke point
|
|
A)
Platinum on alumina
|
B) Nickel
|
|
C)
Iron
|
D)
Aluminium chloride
|
42. The
first crude oil refinery of India is located at
A)
Naharkatiya B) Digboi
C)
Kochin D)
Madras
43. Oxidation
of SO2 to SO3 is favoured by
A)
Low temperature and low pressure
B)
Low temperature and high pressure
C)
High temperature and low pressure
D) High
temperature and high pressure
44. Starting
raw material for the manufacture of alum is
A)
Alumina B) Gypsum
C)
Bauxite D) Ammonium bicarbonate
45. Salt
cake is chemically represented by
|
A) Na2SO4
B) CaSO4. ½ H2O C) MgSO4
46. Which of the following sugars is
the sweetest?
|
|
D) BaSO4
|
|
A) Glucose
B)
Fructose C)
Sucrose
47. All enzymes are made of
|
|
D) Lactose
|
|
A) Fats B) Carbohydrates C) Proteins
|
|
D) Amino
acids
|
48. Styrene
is produced from ethyl benzene by the process of
A)
Dehydrogenation
B) Oxidation
C)
Alkylation D)
Dehydration
49. Gelatine
which is a nitrogenous organic protein is obtained by the hydrolysis of
A)
Collagen B)
Tannin C)
Molasses D)
Carbohydrate
50. Haemoglobin
is a/an
A)
Amino acid
B)
Biological catalyst
C)
Protein D) Enezyme
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