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

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Sr.#	Question	Answer
1	"Each different compound should have a different name" was published by IUPAC system of nomenclature in	A. 1892 B. 1830 C. 1947 D. 1979
2	When methane reacts with Cl₂in the presence of diffused light the products obtained are	A. Chloroform only B. Carbon tetrachloride only C. Chloromethane and dichloromethane D. Mixture of a, b, c
3	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
4	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
5	Which of the following is not aromatic hydrogencarbon	A. Benzene B. Naphthalene C. Toluene D. Cyclohexene
6	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
7	Hydrocarbons contain :	A. Carbon only carbon B. Hydrogen only C. Carbon & hydrogen D. Carbon , hydrogen & halogen
8	The electron releasing effect of methyl group is significant and it makes ring a good	A. Electrophilic B. Nucleophilic C. Nucleophobic D. Hydrophobic
9	The empirical formula of benzene is determined by	A. IR spectra B. U.V C. Elemental analysis D. NMR spectra
10	The C-C bond angles in benzene ring are	A. 119° B. 120° C. 121° D. None
11	Which one of following is not monocyclic aromatic hydrocarbon	A. Benzaldehyde B. Benzoic acid C. Benzene sulfonic acid D. Biphenyl
12	Which reaction is too vigorous to control	A. Chlorination B. Bromination C. Iodination D. Fluorination
13	De halogenatiion of tetrahalides happens in the presence of active metal like	A. Zn B. Mg C. Both a and b D. None of them
14	Which gas is produced by treating CaC₂with water	A. Methane B. Ethane C. Acetylene D. HCI
15	Aromatic hydrocarbons are the derivatives of	A. Normal series of paraffins B. Alkene C. Benzene D. Cyclohexane
16	How many isomeric disubtituted products are obtained by the introducing of second group in the ring	A. Two B. Three C. Four D. None
17	The presence of a double bond in a compound in the sign of:	A. Saturation B. Unsaturation C. Subsitution D. None
18	An alkynes having Carbon count of 20 is	A. gas B. liquid C. Solid D. None
19	Hydrocarbons are organic compounds which contain elements such as	A. Hydrogen B. Carbon C. Hydrogen and carbon D. Halogens
20	Benzene is obtained from benzene sulphonic acid by treating with	A. HCl B. NaOH C. H₂O D. NaHCO₃
21	Alkanes are least reactive towards:	A. Acids and bases B. Reducing agents C. Oxidizing agents D. All of these
22	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
23	Substitution of halogen in the benzene ring requires catalyst	A. AlCl₃ B. FeCl₃ C. SiO₂ D. Organo - nickel
24	Amongst the following the compound that can be most readily sulphonated is	A. Toluene B. Benzene C. Nitrobenzene D. Chlorobenzene
25	The presence of a double bond in a compound is the sign of	A. Saturation B. Unsaturation C. Substitution D. None of above
26	The major reaction occurring in the engines of automobiles is	A. Oxidation B. Reducing C. Combustion D. Decomposition
27	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
28	When alkyl is treated with chlorine in the presence of sunlight	A. 1,3 dichloroproduct is formed B. 1,4 dichloro product is formed C. 1,3,5 trichloro product is formed D. Only alkyl group is substituted
29	Raney - nickel is the alloy of Ni with	A. Pt B. Al C. Cu D. Pd
30	The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with	A. Hund's rule B. Markownikov's rule C. Pauli's Exclusion principle D. Auf ban principle

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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 gas is produced by treating CaC2with water

B-B'-dichloroethyl sulphide is commonly known as

Which of the following reaction is characteristic of benzene

Which of the following is an ortho-para directing group

Which of the following is not an electrophitic substitution reaction of benzene

During the preparation of alkanes the hydrogenation of alkenes or alkynes the catalyst may be

The four bonds of carbon in methane are directed towards the corners of

Benzene is obtained from benzene sulphonic acid by treating with

The elimination of HX from adjacent carbon atoms is called

Write the name of following compound

Which decolourizes the colour of Br3

Eletronegativity difference in C-C bond in alkanes is:

Catalytic oxidation of alkanes is used for the preparation of

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

Mustard gas is a

Cyclohexane can be converted not benzene in the presence of

The hydrocarbon which is used as an illuminating agent

Replacement of hydrogen by NO2group is called

Alkenes combine readily with electrophillic reagents such as halogens giving

The alkynides are used for the ----------- of alkynes

The geometry of acetylene is

All C - H bond lengths of benzene ring is

The correct order of reactivity of halogens with alkanes is

Kolb's method is not useful for the production of

Which of the following species participate in sulphonation of benzene ring?

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

The sp2hybird orbitals are oriented in space at one angle

The presence of a double bond in a compound is the sign of

In CH4, all the H-C-H bond angles are

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

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Which gas is produced by treating CaC₂with water

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

The sp²hybird orbitals are oriented in space at one angle

In CH₄, all the H-C-H bond angles are