ECAT Pre Engineering Chemistry Chapter 19 online mcq test with answers for chapter 19 (Aliphatic Hydrocarbons)

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Sr.#	Question	Answer
1	The major reaction occurring in the engines of automobiles is	A. Oxidation B. Reducing C. Combustion D. Decomposition
2	The carbon, carbon bond length in benzene is	A. 1.54A° B. 1.34A° C. 1.20A° D. 1.39A°
3	Sulphuric acid generates nitronium ion by reacting with	A. Nitric acid B. Nitrogen gas C. Nitrous acid D. Potassium nitrate
4	Aromatic hydrocarbons are the derivatives of	A. Normal series of paraffins B. Alkene C. Benzene D. Cyclohexane
5	If we remove one hydrogen atom from an alkane we obtain a group called	A. Acetyle group B. Formyle group C. Alkyle group D. Ketyle group
6	The simplest and the parent members of aromatic hydrocarbon is	A. Benzene B. Toluene C. Biphenyis D. Naphthalene
7	Which of the following is not an electrophitic substitution reaction of benzene	A. Nitration B. Sulphonation C. Fridel-Craft alkylation D. Free radical chlorination of benzene
8	Benzene is not prepared from	A. Acetylene B. Phenol C. Benzoic acid D. Bromo benzene
9	The empirical formula of benzene is determined by	A. IR spectra B. U.V C. Elemental analysis D. NMR spectra
10	Acetylene when treated with 10% H₂SO₄in the presence of HgSO₄adds one molecule of water to form	A. Aldehydes B. Esters C. Alcohols D. Acids
11	A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is	A. 100 B. 70 C. 50 D. 40
12	Which one of following is not monocyclic aromatic hydrocarbon	A. Benzaldehyde B. Benzoic acid C. Benzene sulfonic acid D. Biphenyl
13	Most common reactions of benzene and its derivatives are	A. electrophilic addition reactions B. electrophilic substitution reactions C. Nucleophilic addition reactions D. Nucleophilic subtitution reactions
14	Which of the following is not an ortho-para directing group
15	Alkenes combine readily with electrophillic reagents such as halogens giving	A. Haloalkanes B. Gem-dihalides C. Vicinal dihalides D. Vinyl halides
16	Benzene was discovered by Michael Faraday's in	A. 1824 B. 1825 C. 1826 D. 1827
17	Reaction of ethanes with KMnO₄gives:	A. Ozonide B. Glyoxal C. Glycol D. Oxalic acid
18	Catalytic oxidation of alkanes is used for the preparation of	A. Adehydes B. Ketones C. Fatty acid D. Carbonyylic acids
19	Which one gives acidic reactions?	A. CH₃----C≡C-------CH₃ B. CH₃-----CH₂-----HC=CH----CH₂ C. CH₃----CH=CH₂ D. CH₃-----C≡CH
20	How many isomeric disubtituted products are obtained by the introducing of second group in the ring	A. Two B. Three C. Four D. None
21	The stability of acromatic compounds decreases with ------- in the no. of its resonance structure	A. Decrease B. Increase C. Remain constant D. Partially decreases
22	Synthetic rubber is made by polymerization of	A. Chloroform B. Acetylene C. Divinlacetylene D. Butene
23	Which of the following is not aromatic hydrogencarbon	A. Benzene B. Naphthalene C. Toluene D. Cyclohexene
24	Substituted phenyl groups are called	A. acyl groups B. phenyl groups C. Aryl groups D. Alkyle groups
25	Write the name of following compound	A. 5 - methyle - 2- hexene B. 2 - methyle hexene C. 4 - ethyle - 2 - methyle hexene D. 3 - ethyle - 3 - methyl hexene
26	Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?	A. Chlorination, nitration, reducing B. Nitration, chlorination, reducition C. Nitration, reduction,chlorination D. Nitration, reduction, acylation, chlorination, hydrolysis
27	The presence of a double bond in a compound is the sign of	A. Saturation B. Unsaturation C. Substitution D. None of above
28	Hydrocarbons contain :	A. Carbon only carbon B. Hydrogen only C. Carbon & hydrogen D. Carbon , hydrogen & halogen
29	Physical properties of alkanes increase with increase of all physical constants except	A. Boiling points B. Melting points C. Density D. Solubility
30	Which reaction is too vigorous to control	A. Chlorination B. Bromination C. Iodination D. Fluorination

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ECAT Pre Engineering Chemistry Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

Write the name of following compound

Acetylene when treated with 10% H2SO4in the presence of HgSO4adds one molecule of water to form

The three alternate single and double bonds in the benzene ring are called

A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4- trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

The carbon, carbon bond length in benzene is

Hydrocarbons contain :

The empirical formula of benzene is determined by

Hybridization in alkanes is:

Replacement of hydrogen by NO2group is called

The simplest and the parent members of aromatic hydrocarbon is

C18and onward hydrocarbons are normally

The electrophile in aromatic sulphonation is

Which one gives acidic reactions?

Nitroalkane are used in

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

The correct order of reactivity of halogens with alkanes is

What is not a common use of methane

The compound prepared by a substitution reaction of benzene is

Which of the following acid can be used as a catalyst in Friedal Craft's reactions

Ethylene polymerizes at 100 atm pressure and 400°C to give

When sodium benzoate is treated with soda lime (NaOH) benzene is formed. What is the other product

Mustard gas is a

Hydrocarbons are divided into aliphatic, alicyclic and aromatic which structure among the following show an alicyclic hydrocarbon

Preparation of vegetable ghee involves:

Which of the following method is most appropriate for the manufacture of methane?

Which of the following is not an ortho-para directing group

Which of the following is not aromatic hydrogencarbon

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with

Incomplete oxidation of alkanes yields

Zn + HCI are used in

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Acetylene when treated with 10% H₂SO₄in the presence of HgSO₄adds one molecule of water to form

Replacement of hydrogen by NO₂group is called

C₁₈and onward hydrocarbons are normally