Which factor does NOT affect the filtration rate?

A. Pressure difference across the filter

D. Surface area of the filter medium

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Industrial Chemical MCQs with Answers

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Industrial Chemical Processes MCQs (41–50)

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41.
Which of the following fertilizers has more nitrogen content?
Correct Answer: D. Urea
One-liner
Urea has the highest nitrogen content among common fertilizers, containing about 46% nitrogen by weight.
42.
The basic principle of green chemistry is/are?
Correct Answer: D. All of these
One-liner
The basic principles of green chemistry include all of these: prevention of waste, use of renewable feedstocks, and designing safer chemicals.
43.
The most suitable temperature for the moderate drying of the solid substance is ?
Correct Answer: B. 120°C
One-liner
The most suitable temperature for moderate drying of a solid substance is 120°C.
44.
Which factor does NOT affect the filtration rate?
Correct Answer: C. Filtration temperature
One-liner
Filtration temperature does NOT directly affect the filtration rate; it influences viscosity, which in turn affects filtration.
45.
In which treatment waste water is filtered, disinfected with chlorine and any leftover salt is removed?
Correct Answer: C. Tertiary treatment
One-liner
Wastewater that is filtered, disinfected with chlorine, and stripped of leftover salts undergoes tertiary treatment.
46.
The first synthetic dye mauveine, was discovered in 1856 by teenage William Henry Perkin. He created this dye out of ?
Correct Answer: B. Coal tar
One-liner
William Henry Perkin discovered the first synthetic dye, mauveine, in 1856 from coal tar.
47.
Urea fertilizer contains % nitrogen.
Correct Answer: D. 46%
One-liner
Urea fertilizer contains 46% nitrogen, making it the most concentrated solid nitrogenous fertilizer.
48.
Which one of these is a fossil fuel?
Correct Answer: D. All of these
One-liner
All of these — coal, natural gas, and petroleum — are fossil fuels formed from the remains of ancient plants and animals over millions of years.
49.
Water treatment commonly uses?
Correct Answer: D. All of these
One-liner
Water treatment commonly uses All of these — chlorine, ozone, and ultraviolet radiation are all widely employed disinfection methods.
50.
Which one of these is the most widely used phosphorus fertilizer in Pakistan?
Correct Answer: B. DAP
One-liner
The most widely used phosphorus fertilizer in Pakistan is DAP (Diammonium Phosphate).

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Industrial Chemical MCQs with Answers

Industrial Chemical Processes MCQs (41–50)

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