CHEMICAL QUIZ :4

Online Examination for Chemical Engineering Quiz Question And Answer

Online Test

1. Out of the following, the depreciation calculated by the __________ method is the maximum.

diminishing balance
straight line
sum of the years digit
sinking fund
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2. Which of the following is not a naturally occurring nuclear fuel ?

Uranium-238
Thorium-233
Plutonium-239
None of these
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3. An electron has a mass that is approximately __________ that of the proton.

1836 (approximately)
1/1836 (approximately)
1
8
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4. Skull is not formed on the carbon blocks in the hearth of a blast furnace, when it becomes cold, becaus of its

non-wetting characteristic
high thermal conductivity
high crushing strength.
none of these
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5. Firing temperature of magnesite bricks is about __________ °C.

800-1000
1000-1200
1600-1800
2400-2600
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6. Hollow refractory bricks are made by

slip casting
hand moulding
pressing/machine moulding
extrusion
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7. Quartz is

stable form of silica upto 870°C.
converted to tridymite on firing between 870 to 1470°C.
transformed to crystoballite on heating above 1470°C.
all (a), (b) and (c).
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8. An indication of degree of firing in silica brick is its

specific gravity
fusion point
RUL
none of these
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9. Nylon-6 is manufactured from

caprolactum
adipic acid and hexamethylene diamine
maleic anhydride and hexamethylene diamine
sebasic acid and hexamethylene diamine
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10. Caprolactum, a raw material for the manufacture of nylon-6, is produced from

phenol
naphthalene
benzene
pyridine
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Score =
Correct answers: