Which of the following is not a sulphur compound present in petroleum? (A) Thiophenes (B) Mercaptans (C) Sulphones (D) Pyrrole

Which of the following is not a sulphur compound present in
petroleum?
(A) Thiophenes
(B) Mercaptans
(C) Sulphones
(D) Pyrrole
by

1 Answer

Answer :

(D) Pyrrole
by

Related questions

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Description : Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to (A) Protect rubber goods from attack by oxygen & ozone present in the atmosphere (B) Reduce its viscosity to ... processing (C) Reduce the time of vulcanisation and quantity of vulcanising agent (D) Increase its viscosity

Last Answer : (B) Reduce its viscosity to permit easier processing

Mercaptans are added to liquefied petroleum gas (LPG) to (A) Reduce its cost (B) Narrow down its explosion limit (C) Assist in checking its leakage from cylinder (D) Increase its calorific value

Description : Mercaptans are added to liquefied petroleum gas (LPG) to (A) Reduce its cost (B) Narrow down its explosion limit (C) Assist in checking its leakage from cylinder (D) Increase its calorific value

Last Answer : (C) Assist in checking its leakage from cylinder

Which is almost absent in crude petroleum? (A) Olefins (B) Mercaptans (C) Naphthenes (D) Cycloparaffins

Description : Which is almost absent in crude petroleum? (A) Olefins (B) Mercaptans (C) Naphthenes (D) Cycloparaffins

Last Answer : (B) Mercaptans

Mercaptans are (A) Low boiling sulphur compounds(B) Added in LPG cylinders to detect gas leakage by its smell(C) Undesirable in petrol, as they reduce its octane number(D) All (A), (B) and (C)

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Leakage in a cooking gas cylinder is detected by (A) Radio-isotopes (B) Pouring soap solution on the surface and locating the gas bubbles (C) Halide torch (D) Pungent smell of mercaptans present in the gas

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Sulphur content in lighter and heavier petroleum products is generally determined respectively by (A) Lamp method and bomb method (B) Bomb method and lamp method (C) Bomb method and quartz tube method (D) Quartz tube method and lamp method

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Last Answer : (B) Bomb method and lamp method

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Last Answer : (A) Naphtha

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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'

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Which of the following is desirable in diesel and kerosene but is undesirable in gasoline? (A) Aromatics (B) Mercaptans (C) Paraffins (D) Naphthenic acid

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In pyrrole, The electron density is maximum on :

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All mammalian steroid hormones are formed from (A) Purine (B) Pyrimidine (C) Cholesterol (D) Pyrrole

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During breakdown of haem, the methenyl bridge between the following two pyrrole rings is broken: (A) I and II (B) II and III (C) III and IV (D) IV and I

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Vitamin B12 has a complex ring structure (corrin ring) consisting of four (A) Purine rings (B) Pyrimidine rings (C) Pyrrole rings (D) Pteridine rings

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Chlorophyll a molecule at its carbon atom 3 of the pyrrole ring II has one of the following (a) carboxylic group (b) magnesium (c) aldehyde group (d) methyl group

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Furan reacts with ammonia in the presence of alumina at 400°C to give (a) Pyridine (b) Furfura(c) Pyrrole (d) Furoic acidl

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Which of the following reagents will react with pyrrole to form 2- formylpyrrole? (a) HCOOH (b) CHCl3/KOH (c) H2O2 (d) (CH3CO)2O/SnCl4

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Pyrrole is less basic than pyridine because the lone-pair of electrons on Natom in pyrrole (a) is part of the delocalized π molecular orbital. (b) is not part of the delocalized π molecular orbital. (c) resides in sp2 hybrid orbital (d) resides in sp hybrid orbital

Description : Pyrrole is less basic than pyridine because the lone-pair of electrons on Natom in pyrrole (a) is part of the delocalized π molecular orbital. (b) is not part of the delocalized π molecular orbital. (c) resides in sp2 hybrid orbital (d) resides in sp hybrid orbital

Last Answer : is part of the delocalized π molecular orbital.

Which of the following heterocyclic compounds is not aromatic? (a) Pyridine (b) Pyrrole (c) Furan (d) Piperidine

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An isosteric replacement for carboxylic acid group is (A) pyrrole (B) isoxazole (C) phenol (D) tetrazole

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Pyrrole is ...... a. nonaromatic b. Aromitic c. Antiaromatic d. Aliphatic

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Anaerobic degradation of proteins brought about by bacteria and fungi give the products like A- mercaptans and indole B-H2S C-both (a) and (b) D-None of these

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Waxes present in petroleum products (A) Can be separated out by distillation(B) Are not soluble in them(C) Crystallise out at low temperature(D) Decrease their viscosity

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Asphalts are(A) Low molecular weight & low boiling point compounds present in petroleum (B) Desirable in catalytic cracking feedstock, because they produce coke (C) Readily oxidisable and form carbonaceous sludge (D) All (A), (B) & (C)

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Last Answer : (C) Readily oxidisable and form carbonaceous sludge

__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation. (A) Magnesium (B) Potassium (C) Calcium (D) Sodium

Description : __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation. (A) Magnesium (B) Potassium (C) Calcium (D) Sodium

Last Answer : (A) Magnesium

Olefins are (A) Saturated hydrocarbons(B) Unsaturated cyclic compounds (hydrocarbons)(C) Present in substantially good quantity in crude petroleum(D) None of these

Description : Olefins are (A) Saturated hydrocarbons (B) Unsaturated cyclic compounds (hydrocarbons) (C) Present in substantially good quantity in crude petroleum (D) None of these

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Naphthenic acid is a/an __________ compound. (A) Sulphur (B) Nitrogen (C) Oxygen (D) None of these

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Ethyl mercaptan is a/an __________ compound. (A) Sulphur (B) Nitrogen

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Quinoline is a/an __________ compound. (A) Sulphur (B) Nitrogen (C) Oxygen (D) None of these

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Which of the following produces maximum crude petroleum in India at present? (1) Assam (2) Gujarat (3) Off-shore Bombay High (4) Coastal Tamil Nadu

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Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ? (1) Methane (2) Ethane (3) Propane (4) Butane

Description : Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ? (1) Methane (2) Ethane (3) Propane (4) Butane

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A compound possesses 8% sulphur by mas. The least molecular mass is :-

Description : A compound possesses 8% sulphur by mas. The least molecular mass is :-

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When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Description : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Last Answer : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is A. ... sodium sulphate C. sodium persulphate D. sodium thiosulphate

When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Description : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Last Answer : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is A. ... sodium sulphate C. sodium persulphate D. sodium thiosulphate

When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Description : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is

Last Answer : When sulphur is boiled with `Na_(2)SO_(3)` solution, the compound formed is A. `Na_(2)SO_(4)` B. `Na_(2)S_(2) ... 2)S_(2)O_(6)` D. `Na_(2)S_(2)O_(3)`