Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency? (A) Paraffins (B) Naphthenes (C) Aromatics (D) Iso-paraffins

Which of the following hydrocarbons of same carbon atoms has
minimum smoking tendency?
(A) Paraffins
(B) Naphthenes
(C) Aromatics
(D) Iso-paraffins
by

1 Answer

Answer :

(A) Paraffins
by

Related questions

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 → naphthenes → aromatics (B) Smoking tendency of paraffins increases with decrease in its molecular weight

Description : 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 → naphthenes → aromatics (B) Smoking tendency of paraffins increases with decrease in its molecular weight

Last Answer : (B) Smoking tendency of paraffins increases with decrease in its molecular weight

Choose the correct statement. (A) Octane number of i-octane is zero (B) Octane number of paraffins increases with increasing number of carbon atoms (C) Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

Description : Choose the correct statement. (A) Octane number of i-octane is zero (B) Octane number of paraffins increases with increasing number of carbon atoms (C) Branched chain paraffins have higher octane ... atoms (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

Last Answer : (A) Octane number of i-octane is zero

H/C ratio (by weight) for the same number of carbon atoms is the highest in case of (A) Aromatics (B) Paraffins (C) Olefins (D) Naphthenes

Description : H/C ratio (by weight) for the same number of carbon atoms is the highest in case of (A) Aromatics (B) Paraffins (C) Olefins (D) Naphthenes

Last Answer : (D) Naphthenes

Which of the following has the highest gum forming tendency in gosoline? (A) Paraffins (B) Diolefins (C) Aromatics (D) Naphthenes

Description : Which of the following has the highest gum forming tendency in gosoline? (A) Paraffins (B) Diolefins (C) Aromatics (D) Naphthenes

Last Answer : (B) Diolefins

In a SI engine, which one of the following is the correct order of the fuels with increasing detonation tendency? (a) Paraffins, olefins, naphthenes, aromatics (b) Aromatics, naphthenes, paraffins, olefins (c) Naphthenes, olefins, aromatics, paraffins (d) Aromatics, naphthenes, olefins, paraffins

Description : In a SI engine, which one of the following is the correct order of the fuels with increasing detonation tendency? (a) Paraffins, olefins, naphthenes, aromatics (b) Aromatics, naphthenes, paraffins, olefins (c) Naphthenes, olefins, aromatics, paraffins (d) Aromatics, naphthenes, olefins, paraffins

Last Answer : Ans :d

Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process (C) The most ideal feedstock for thermal reforming is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

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Which is the most desirable component of a good quality kerosene? (A) i-paraffins (B) Aromatics (C) n-paraffins (D) Naphthenes

Description : Which is the most desirable component of a good quality kerosene? (A) i-paraffins (B) Aromatics (C) n-paraffins (D) Naphthenes

Last Answer : (C) n-paraffins

Which of the following has the highest octane number? (A) Aromatics(B) i-paraffins(C) Naphthenes(D) Olefins

Description : Which of the following has the highest octane number? (A) Aromatics (B) i-paraffins (C) Naphthenes (D) Olefins

Last Answer : (A) Aromatics

Which is the most undesirable component in kerosene? (A) Aromatics (B) i-paraffins (C) n-paraffins (D) Naphthenes

Description : Which is the most undesirable component in kerosene? (A) Aromatics (B) i-paraffins (C) n-paraffins (D) Naphthenes

Last Answer : (A) Aromatics

Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. (A) Smoke point (B) Paraffins (C) Aromatics (D) Naphthenes

Description : Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. (A) Smoke point (B) Paraffins (C) Aromatics (D) Naphthenes

Last Answer : (B) Paraffins

Which of the following is the easiest to crack? (A) Paraffins (B) Olefins (C) Naphthenes (D) Aromatics

Description : Which of the following is the easiest to crack? (A) Paraffins (B) Olefins (C) Naphthenes (D) Aromatics

Last Answer : (A) Paraffins

Reforming converts (A) Olefins into paraffins (B) Naphthenes into aromatics (C) Naphthenes into olefins (D) Naphthenes into paraffin

Description : Reforming converts (A) Olefins into paraffins (B) Naphthenes into aromatics (C) Naphthenes into olefins (D) Naphthenes into paraffin

Last Answer : (B) Naphthenes into aromatics

Pick out the correct statement. (A) Paraffins have higher octane number than corresponding iso-paraffin (B) Paraffins have lower smoke point than aromatics

Description : Pick out the correct statement. (A) Paraffins have higher octane number than corresponding iso-paraffin (B) Paraffins have lower smoke point than aromatics

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Last Answer : (B) Aromatics have lower specific gravity than corresponding paraffins

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Description : Aromatics have the highest __________ of all the hydrocarbons of same carbon atoms. (A) Smoke point (B) Octane number (C) Cetane number (D) Viscosity

Last Answer : (B) Octane number

Isomerisation converts the __________ tot-paraffins. (A) Paraffins (B) Olefins (C) Naphthenes (D) None of these

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Description : The main reaction in reforming is the (A) Dehydrogenation of naphthenes (B) Hydrogenation of naphthenes (C) Hydrocracking of paraffins (D) Saturation of olefins

Last Answer : (A) Dehydrogenation of naphthenes

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Last Answer : (C) Light paraffinic fuel oils is higher than that of equivalent olefins

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Last Answer : (B) Causes olefins to combine with iso-paraffins

Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking

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In petroleum refining, the process used for conversion of hydrocarbons to aromatics is (A) Catalytic cracking (B) Catalytic reforming (C) Hydrotreating (D) Alkylation

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With increase in the molecular weight of aromatic present in kerosene, its smoking tendency (A) Increases (B) Decreases (C) Remain same (D) Is unpredictable

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Last Answer : (A) Increases

Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

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Description : The general formula of naphthenes is (A) CnH2n + 2 (B) CnH2n-6 (where, n ≥ 6) (C) CnHn-4 (D) Same as that for olefins i.e. CnH2n

Last Answer : (B) CnH2n-6 (where, n ≥ 6)

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