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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater?

A Electric immersion

B Pipestill

C Steam coil

D None of these

Review Detailed Answer

Correct Answer: Pipestill

Glycol added to petrol acts as a/an ________________ agent ?

A Anti-knocking

B Anti-icing

C Anti-gum forming

D Dewaxing

Review Detailed Answer

Correct Answer: Anti-icing

Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________?

A 0.1

B 1

C 2.5

D 3.5

Review Detailed Answer

Correct Answer: 1

Antioxidants are added in petrol to _____________________?

A Impart colour to it, for easy identification

B Minimise the gum formation

C Prevent icing of the carburettor

D Prevent the lead build up in engines

Review Detailed Answer

Correct Answer: Minimise the gum formation

Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?

A Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins →

B Smoking tendency of paraffins increases with decrease in its molecular weight

C Smoking tendency of naphthenes decreases with its increasing molecular weight & also on

D Smoking tendency of aromatics decreases with increase in its molecular weight

Review Detailed Answer

Correct Answer: Smoking tendency of paraffins increases with decrease in its molecular weight

Mercaptans is represented as (where R and R’ are alkyl groups) _____________________?

A R-COOH

B R-S-H

C R-S-R

D R-S-R’

Review Detailed Answer

Correct Answer: R-S-H

Cetane number of alpha methyl naphthalene is assumed to be_________________?

A 0

B 100

C 50

D ∞

Review Detailed Answer

Correct Answer: 0

Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?

A Aromatics

B Mercaptans

C Paraffins

D Naphthenic acid

Review Detailed Answer

Correct Answer: Aromatics

Flash point of diesel/kerosene (>50°C) is determined by the_______________?

A Abel apparatus

B Pensky-Martens apparatus

C Saybolt chromometer

D None of these

Review Detailed Answer

Correct Answer: Abel apparatus

Naphthenic acid is a/an ______________ compound?

A Sulphur

B Nitrogen

C Oxygen

D None of these

Review Detailed Answer

Correct Answer: Oxygen

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater?

Glycol added to petrol acts as a/an ________________ agent ?

Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________?

Antioxidants are added in petrol to _____________________?

Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?

Mercaptans is represented as (where R and R’ are alkyl groups) _____________________?

Cetane number of alpha methyl naphthalene is assumed to be_________________?

Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?

Flash point of diesel/kerosene (>50°C) is determined by the_______________?

Naphthenic acid is a/an ______________ compound?