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

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Sr.#	Question	Answer
1	Polymerization of ethane take place at pressure of 100 atm and a temperature of	A. 200°C B. 400°C C. 600°C D. 800°C
2	Reaction of ethanes with KMnO₄gives:	A. Ozonide B. Glyoxal C. Glycol D. Oxalic acid
3	The reaction-method that does not give an alkane is	A. Catalytic hydrogenation of alkanes B. Wurtz reaction C. Hydrolysis of alkyl magnesium bromide D. Dehydrohalogenation of an alkyl halide
4	Which is the used as test for the presence of alkenes	A. Reaction of cold dilute alkaline KMnO₄ B. Combustion C. Polymerization D. Catalytic hydrogenation
5	Ethylene polymerizes at 100 atm pressure and 400°C to give	A. Polybenzene B. Polyalcohol C. Polypropylene D. Polyethylene
6	During nitration of benzene, the active nitrating agent is	A. NO3 B. NO2+ C. NO2- D. HNO3
7	Alkyl benzenes are readily oxidized by axidfied	A. KMnO₄ B. K₂CO₃ C. MnO₄ D. H₂SO₄
8	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
9	Catalytic oxidation of alkanes is used for the preparation of	A. Adehydes B. Ketones C. Fatty acid D. Carbonyylic acids
10	The temp. used for the hydrogenation of alkenes using Ni is	A. 2000°C B. 400°C C. 200-- 300°C D. 1000°C
11	The sp²hybird orbitals are oriented in space at one angle	A. 180° B. 109.5° C. 100° D. 120°
12	Synthetic rubber is made by polymerization of	A. Chloroform B. Acetylene C. Divinlacetylene D. Butene
13	Which gas is produced by treating CaC₂with water	A. Methane B. Ethane C. Acetylene D. HCI
14	When acetylene is passed through a copper tube at 300°C, it polymerizes to	A. Polyacetylene B. polyethylene C. Benzene D. None of these
15	Mustard gas is a	A. Gas B. High boiling speed C. High melting liquid D. Steam
16	Kolb's method has limited synthetic applications due to	A. Expensive catalysis B. Slow reaction C. Number of side products produced D. Salts used are very expensive
17	Which compound was recognized the parent member of aromatic compounds	A. Aniline B. Phenol C. Benzene D. Toluene
18	Benzene reacts with ozone and gives	A. Glycerin B. Glyoxal C. Maleic anhydride D. Benzoic acid
19	All C - H bond lengths of benzene ring is	A. 1.07A° B. 1.09A° C. 1.08A° D. None
20	The C-C bond angles in benzene ring are	A. 119° B. 120° C. 121° D. None
21		A. 4-methyl pentene B. 2-methyle-1-butene C. 2-methyl propane D. None of the above
22	The electrophile in aromatic sulphonation is	A. H₂SO₄ B. HSO₄ C. SO₃ D. SO₃⁺
23	Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called	A. Wurtz reaction B. Fitting reaction C. Wurtz fitting reaction D. None of these
24	Synthesis of rubber is made by polymerization of	A. Chloroform B. Acetylene C. Divinylacetylene D. Butene
25	Complete combustion of alkane yields	A. CO₂+ H₂O B. CO₂+ heat C. CO + H₂O heat D. CO₂+ H₂O + heat
26	How many molecules of chlorine adds in benzene in the presence of sunlight	A. One B. Two C. Three D. Four
27	Nitroalkane are used in	A. Fuel B. Solvents C. Organic synthesis D. All of them
28	Formula of chloroform is	A. CH₃CI B. CCI₄ C. CH₂CI₂ D. CHCI₃
29	Which of the following possesses the highest melting point?	A. Chlorobenzene B. 0-Dichlorobenzene C. m-Dichlorobenzene D. p-Dichlorobenzene
30	Zn + HCI are used in	A. Clemenson reduction B. Wof kishner reduction C. Kolb's electrolysis D. Wutruz reaction

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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

Which decolourizes the colour of Br3

The molecule of ethane possess which hybrization

Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively

The method used only for the production of symmetrical alkanes

Replacement of hydrogen by NO2group is 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

Alkanes are least reactive towards:

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

Benzene reacts with ozone and gives

The major reaction occurring in the engines of automobiles is

Most common reactions of benzene and its derivatives are

Odour of alkene is:

Mustard gas is a

Which of the following reaction is characteristic of benzene

The correct order of reactivity of halogens with alkanes is

Preparation of vegetable ghee involves

When methane reacts with Cl2in the presence of diffused light the products obtained are?

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

Preparation of vegetable ghee involves

The difference between amount of heat actually released and that of calculated is called

All are ortho & Para directing except

Write the name of following alkene CH2= CH - CH = CH2

All C - H bond lengths of benzene ring is

Which one of the following is (m-xylene)

Sulphuric acid generates nitronium ion by reacting with

Complete combustion of alkane yields

An alkynes having Carbon count of 20 is

An alkane is produced when an alkyle halide reacts with zinc in the presence of

The temp. used for the hydrogenation of alkenes using Ni is

Free radical mechanism of halogenation of alkanes follow step:

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Which decolourizes the colour of Br₃

Replacement of hydrogen by NO₂group is called

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

Write the name of following alkene CH₂= CH - CH = CH₂