• Petrochemicals - 2
Back
0

Petrochemicals - 2

Description: Petrochemicals
Number of Questions: 15
Created by:
Tags: Petrochemicals Crude Oil: Composition of Crude Oil- Hydrocarbon Compounds First, Second & Third Generation Petrochemicals Physical Separation Processes Natural Gas Conversion Processes
Start the Quiz
Attempted 0/15 Correct 0 Score 0
‹
›

Which of the following statements is incorrect?

  1. Gasoline or petrol is obtained between 40-120 oC during fractional distillation of crude oil.

  2. Nylon 11 is a third generation petrochemical.

  3. In fractional distillation of petroleum, higher boiling fractions condense first; while the lower boiling fractions turn by turn.

  4. Naphthalene is used as solvent and in dry cleaning.

Show answer
Correct Option: B
Explanation:

Nylon 11 is a polyamide bioplastic derived from vegetable oil.

Reforming is a process used for

  1. making synthetic petrol

  2. making low boiling hydrocarbons of lower molecular mass

  3. improving antiknock characteristics of fuel

  4. producing power alcohol

Show answer
Correct Option: C
Explanation:

Reforming is a process of bringing about structural modifications in the component of straight-run gasoline for improving its antiknock properties.

Which of the following is incorrectly matched?

  1. Doctor's process: Industrial chemical process for removing sulphur compounds from sour gasoline

  2. Cottrell's process: Process of obtaining petroleum ether from crude oil

  3. Dubb's process: Advanced thermal cracking process

  4. None of these

Show answer
Correct Option: B
Explanation:

Cottrell's process is the process of freeing oil from water by allowing the crude to flow between two highly charged electrodes.

Identify the incorrect statement.

  1. Mixed base type crude is generally rich in semi-solid waxes.

  2. Petroleum ether is used as solvent.

  3. In fractional distillation of petroleum, lower boiling fractions condense first.

  4. In fractional distillation of petroleum, diesel oil fraction is obtained between 180-250 oC.

Show answer
Correct Option: C
Explanation:

In fractional distillation of petroleum, higher boiling fractions condense first; while the lower boiling fractions turn by turn.

Which of the following SETS of second generation petrochemical can be derived from propylene?

  1. Acrolein, Vinyl chloride, Acrylonitrile

  2. Glycerol, Cyclohexane, Acrolein

  3. Glycerol, Acrolein, Vinyl chloride

  4. Acrolein, Glycerol, Acrylonitrile

Show answer
Correct Option: D
Explanation:

Acrolein, glycerol and acrylonitrile are derived from propylene.

Which of the following sets represents only third generation petrochemicals?

  1. Polythene, PVC, Nylon 11

  2. DDT, Natural rubber, Nylon 66

  3. Polythene, PVC, DDT

  4. Cellulose, Nylon 66, Polythene

Show answer
Correct Option: C
Explanation:

Polythene, PVC and DDT are third generation petrochemicals derived from ethylene, vinyl chloride and chlorobenzene, respectively.

Which of the following compounds possesses the highest octane number and the highest cetane number?

n-heptane, n-hexadecane, n-octane and isooctane

  1. isooctane and n-octane

  2. n-hexadecane and isooctane

  3. n-heptane and n-hexadecane

  4. Isooctane and n-hexadecane

Show answer
Correct Option: D
Explanation:

Among the given compounds, isoctane has the highest octane number and n-hexadecane has the highest cetane number.

Which of the following statements is FALSE about the process of 'cracking' in the petrochemical industry?

  1. It requires high temperature.

  2. It converts small hydrocarbons to more useful bigger hydrocarbons.

  3. In catalytic cracking, much lower pressure is required than thermal cracking.

  4. Petrol obtained from vapour phase cracking has better anti-knock properties than petrol from liquid phase cracking.

Show answer
Correct Option: B
Explanation:

Cracking is the decomposition of bigger hydrocarbon molecules into simpler, low boiling hydrocarbons of lower molecular weight.

Which of the following types of crude oils is/are generally rich in semi-solid waxes?

  1. Paraffinic-base type crude

  2. Asphaltic-base type crude

  3. Mixed base type crude

  4. All the three are equally rich in semi solid waxes.

Show answer
Correct Option: C
Explanation:

Mixed base type crude contains both paraffinic and asphaltic hydrocarbons and are, generally, rich in semi-solid waxes.

Which of the following catalysts are used in catalytic cracking? (a) Silica-alumina (b) Lithium aluminium hydride (c) Zeolites (d) Anhydrous aluminium chloride (e) Aluminum hydrosilicate

  1. (a), (b), (c) and (d)

  2. (a), (c) and (e)

  3. (a), (c) and (d)

  4. (b), (c) and (e)

Show answer
Correct Option: B
Explanation:

Silica-alumina, zeolites and aluminium hydrosilicate are used in catalytic cracking. Lithium aluminium hydride used as a reducing agent in organic synthesis, especially for the reduction of esters, carboxylic acids, and amides. Anhydrous aluminium chloride is used as a catalyst for Friedel-Crafts reactions (both acylation and alkylation).

Which of the following pairs are incorrectly matched ||| |---|---| | Fractions obtained by distillation of crude | Boiling range | | I. Gasoline | Below 30 oC | | II. Kerosene oil | 180-250 oC | | III. Fuel oil | 120-180 oC | | IV. Heavy oil | 320-400 oC |

  1. I and II

  2. I and III

  3. II and III

  4. II and IV

Show answer
Correct Option: B
Explanation:

Both I and III are incorrectly matched. Boiling range on gasoline or petrol or motor spirit is 40-120 oC. Boiling range of Diesel oil or fuel oil or gas oil is 250-320 oC.

Consider the following statements about natural gas.

  1. Natural gas is mainly composed of methane.
  2. When natural gas occurs along-with petroleum in oil wells, it is called wet gas.
  3. Natural Gas Liquids (NGLs) include methane, ethane, propane, n-butane, iso-butane, and natural gasoline.

Which of the statements is/are correct?

  1. 1 only

  2. 1 and 2 only

  3. 1 and 3 only

  4. All are correct

Show answer
Correct Option: B
Explanation:

Statements 1 and 2 are correct, while statement 3 is wrong. Natural Gas Liquids (NGLs) include ethane, propane, n-butane, iso-butane, and natural gasoline.

Which of the following statements is/are correct? (a) Crude oil is a non-renewable energy resource. (b) Crude oil and natural gas are generally found in metamorphic rocks. (c) The fraction of crude oil containing a mixture of hydrocarbons such as decane to hexadecane is called kerosene oil.

  1. Only (a) and (b)

  2. Only (b) and (c)

  3. Only (a) and (c)

  4. All of these

Show answer
Correct Option: C
Explanation:

Statements (a) and (c) are correct, while statement (b) is incorrect. Crude oil and natural gas are generally found in sedimentary rocks.

Consider the following combinations ||| |---|---| | Crude fraction| Uses| | i. Naphtha| As solvent and in dry cleaning.| | ii. Asphalt| As fuel and lubricant.| | iii. Petroleum jelly| As lubricant and in cosmetics and medicines| | iv. Heavy oil| For getting gasoline by cracking process|

Which of the combinations are correct?

  1. i, ii and iii

  2. ii, iii and iv

  3. i, iii and iv

  4. i, ii and iv

Show answer
Correct Option: C
Explanation:

Combinations (i), (iii) and (iv) are correct. Combination (ii) is incorrect. Asphalt is used in waterproofing of roofs and in the construction of roads.

Which of the following are advantages of LPG over gasoline as a motor fuel? (a) It is cheaper than gasoline. (b) It is highly knock resistant. (c) Its octane number is quiet high and the load sensitivity is very low. (d) Residue and oil contamination is small as it burns cleanly.

  1. (a), (b) and (c)

  2. (a), (b) and (d)

  3. (a), (c) and (d)

  4. All are correct

Show answer
Correct Option: B
Explanation:

Statement (c) is incorrect. Octane number of LPG is quiet low and its load sensitivity is very high.

- Hide questions
ADVERTISEMENT

Find more quizzes from top tags

general knowledge
3615 Quizzes
119858 Questions
 technology
307 Quizzes
36705 Questions
 sports
963 Quizzes
19148 Questions
 history
1187 Quizzes
13475 Questions
 physics
598 Quizzes
13441 Questions
 biology
1160 Quizzes
12174 Questions
 science & technology
551 Quizzes
11015 Questions
 chemistry
490 Quizzes
9892 Questions
 maths
518 Quizzes
9324 Questions
 softskills
0 Quizzes
7131 Questions