FSC Chemistry MCQs Chapter 8 Class 12





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Chemistry Ch 8 Class 12 Hydrocarbons

1 / 62

Which one of the following molecules has the shortest distance of carbon atoms?

PreMedPK MDCAT Mock 3
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2 / 62

The addition of HBr to an unsymmetrical alkenes follows?

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3 / 62

Electrophile in sulphonation of benzene is:

PMC 2020
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4 / 62

1,4-dimethyl benzene is called as ______.

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5 / 62

In which of the following C-C bond length is the minimum?

6 / 62

Which step should be repeated over and over to get a variety of substituted products?

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7 / 62

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

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8 / 62

Generic formula of cycloalkane is:

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9 / 62

In which of the following cases are the benzene rings isolated?

PreMedPK MDCAT Mock 2
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10 / 62

The major source of unburnt hydrocarbons in the atmosphere is / are:

NUMS 2016
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11 / 62

Alkanes having five to seventeen carbon atoms per molecule are:

NTS 2013
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12 / 62

Formula of propene is

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The electrophilic reactions of Benzene are:

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14 / 62

The IUPAC name of the compound having structural formula CH3 — CH(OH) —COON is:

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Sp hybridization is found In which of the following?

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Unsaturated Compound containing double bond is:

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20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?

PreMedPK MDCAT Mock 5
Chemistry
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18 / 62

In the reaction, R-C≡C-R → the reagent used to convert alkyne into trans alkene is:

NTS 2014
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19 / 62

Which one of the organic compounds Is the most reactive?

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) If 2-butene is treated with KMn04, the product is:

21 / 62

How many chain isomers are shown by C5H12?

PreMedPK MDCAT Mock 4
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22 / 62

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

PreMedPK MDCAT Mock 1
Chemistry
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23 / 62

Which one of the following molecules has the shortest distance of carbon atoms?

NTS 2013
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24 / 62

Physical properties of Ethyne is/are:

PreMedPK MDCAT Mock 3
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25 / 62

H2 and Cl2 do not react in the dark, but in the presence of light a vigorous reaction is initiated due to the formation of:

NUMS 2016
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26 / 62

Acetylene with Cl2 gives:

27 / 62

Electrophile in sulphonation of benzene is:

PreMedPK MDCAT Mock 4
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28 / 62

Which among the following gives ppt. with terminal alkynyl hydrogen?

PreMedPK MDCAT Mock 4
Hydrocarbons
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29 / 62

Benzene can be prepared from:

NTS 2011
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30 / 62

IUPAC Nomenclature of:

CH3 – CH = CH – CH2 – CH = CH2 is:

NTS 2011
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31 / 62

Formula of Thionyl chloride is

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In alkanes all carbon atoms are linked by bond

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The electrophilic reactions of Benzene are:

PreMedPK MDCAT Mock 2
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34 / 62

When CH3 is attached to the benzene ring, it makes the ring a:

PMC 2020
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35 / 62

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent?

PreMedPK MDCAT Mock 4
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36 / 62

Benzene can be prepared from:

PreMedPK MDCAT Mock 2
Chemistry
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37 / 62

How many chain isomers are shown by C5H12?

NTS 2018
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38 / 62

Which metal is used to form alkanes from alkyl halides?

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Molecular Formula of Propane is:

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Benzene in the presence of AlCl3 produces acetophenone when reacts with:

PreMedPK MDCAT Mock 4
Chemistry
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41 / 62

20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?

NTS 2015 SMBBMC
Chemistry
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42 / 62

Which one of the following is saturated hydrocarbon?

43 / 62

Catenation is a process in which carbon shows the properties of:

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44 / 62

The general formula of Methane Dichloride is:

45 / 62

In Alkenes the Carbon atoms are connected to each other by a

46 / 62

Which one of these is/are gasses?

47 / 62

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

PreMedPK MDCAT Mock 5
Chemistry
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48 / 62

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

NTS 2013
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49 / 62

Which one of the following has the least C — C bond length?

50 / 62

When CH2 = CH2 reacts with a halogen acid, the product formed is:

51 / 62

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

NUMS 2016
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52 / 62

Which gas among the following can be dried by bubbling in H2S04?

53 / 62

Methane reacts with chlorine to form chloromethane. The catalyst used is?

NTS 2015 SMBBMC
Biology
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54 / 62

Which of the following compounds react slower than benzene in electrophilic substitution reaction?

PreMedPK MDCAT Mock 5
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55 / 62

CH ≡ CH + 2AgNO3 -> AgC ≡ CAg + 2HNO3 represents _____ property of acetylene.

NTS 2012
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56 / 62

Catalytic hydrogenation of alkenes exhibits:

PreMedPK MDCAT Mock 4
Chemistry
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57 / 62

How many sigma groups are there in benzene?

NTS 2014
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58 / 62

What Is Lindlar Catalyst?

59 / 62

Percentage of butane in Sui gas is?

NTS 2015 SMBBMC
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60 / 62

KOLBE’s method is used to prepare?

61 / 62

Boiling point of heptane is:

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When CH3 is attached to the benzene ring, it makes the ring a:

PreMedPK MDCAT Mock 1
Chemistry
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