Chemistry MCQ on HydrocarbonsThe following section consists of Chemistry Multiple Choice questions on Hydrocarbons For competitions and exams. Select the correct option to test your skills on Hydrocarbons.
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Hydrocarbons
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Question 1 of 20
1. Question
__________ carbide reacts with water to give methane
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Question 2 of 20
2. Question
Chlorination of alkanes is an example of________ reaction.
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Question 3 of 20
3. Question
The hydrocarbon in which all the four valencies of carbon atoms are fully utilized are called________
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Question 4 of 20
4. Question
The old name of alkenes was
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Question 5 of 20
5. Question
The hydrocarbons which contain at least_________benzene ring in their molecules are, called aromatic hydrocarbon.
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Question 6 of 20
6. Question
Methane is the ______ component of natural gas:
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Question 7 of 20
7. Question
Ethene is slightly_________ in taste.
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Question 8 of 20
8. Question
Removal of __ from a molecule is called dehydration.
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Question 9 of 20
9. Question
Ethylene is a ________ molecule.
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Question 10 of 20
10. Question
__________group acts as a negative group in Ho x molecules.
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Question 11 of 20
11. Question
Alkenes__________the colour of basic solution of KMnO4.
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Question 12 of 20
12. Question
Calcium carbide reacts with water to produce
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Question 13 of 20
13. Question
________is used as a synthetic fibre.
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Question 14 of 20
14. Question
Benzene was discovered by
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Question 15 of 20
15. Question
The carbon, carbon bond lengths in benzene are A°
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Question 16 of 20
16. Question
Benzene is ____________ in alcohol (or in soluble).
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Question 17 of 20
17. Question
The acylation of benzene is called__________ reaction.
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Question 18 of 20
18. Question
Benzene _________ oxidized by kMnO4 or K2Cr2O7
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Question 19 of 20
19. Question
The _________ directing groups
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Question 20 of 20
20. Question
Alkanes are __________ in water.
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Hydrocarbons2
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Question 1 of 20
1. Question
Alkanes ______________ chemically with electrophiles and nucleophiles.
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Question 2 of 20
2. Question
The reaction of alkanes with chlorine is _________ than with bromine.
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Question 3 of 20
3. Question
Methane is oxidized to _________ at 400c° and 200 atm. in presence of Cu
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Question 4 of 20
4. Question
Ethyl halides are reduced by_________ hydrogen.
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Question 5 of 20
5. Question
Ethane is _________ in water.
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Question 6 of 20
6. Question
Iodine gives _______product with acetylene.
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Question 7 of 20
7. Question
Acetylenic __________ hydrogen atoms are in nature.
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Question 8 of 20
8. Question
A source of light is passed through isolated chlorophyll solution.When source is removed, which light is emitted by solution?
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Question 9 of 20
9. Question
The number of electron in M-shell of an element having atomic number 24 is
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Question 10 of 20
10. Question
Question 01: On heating a liquid at its dynamic equilibrium the concentration of molecules in vapour state as well as in liquid state
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Question 11 of 20
11. Question
The general formula for the alkynes is
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Question 12 of 20
12. Question
In a laboratory experiment, students tested the solubility of different solutes in methylbenzene. They made a table as shown. However, two of these results are incorrect. Select the two incorrect results from the list below
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Question 13 of 20
13. Question
Organic compounds are separated into groups called homologous series. Which one of the following is not a property of a homologous series?
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Question 14 of 20
14. Question
The ethyne produced in the laboratory contains two known impurities which are removed by passing them through an acidified copper sulfate solution. These impurities are
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Question 15 of 20
15. Question
The general formula for the alkanes is
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Question 16 of 20
16. Question
In hydrocarbons, the C and H bonds are joined together by
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Question 17 of 20
17. Question
One of the raw materials used in preparing ethyne (C2H2) contains a number of impurities. Two of these impurities are
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Question 18 of 20
18. Question
What is the main component of natural gas?
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Question 19 of 20
19. Question
Which three of the following are properties of alkynes?
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Question 20 of 20
20. Question
How can you determine if a reaction is endothermic?
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Hydrocarbons3
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Question 1 of 20
1. Question
Which four of the following statements about alkenes are correct?
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Question 2 of 20
2. Question
Which one of these is not a source of methane gas?
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Question 3 of 20
3. Question
The formula that shows how atoms are arranged in a molecule is called the
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Question 4 of 20
4. Question
The general formula for the alkenes is
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Question 5 of 20
5. Question
Which statement about benzene is correct?
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Question 6 of 20
6. Question
The process of catalytic cracking involves using
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Question 7 of 20
7. Question
How many isomers are there of pentane?
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Question 8 of 20
8. Question
How many other unsaturated isomers are there of pent-1-ene?
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Question 9 of 20
9. Question
How many cyclic isomers are there of pentene?
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Question 10 of 20
10. Question
Which hydrocarbon has a molecular formula different from that of the other three?
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Question 11 of 20
11. Question
n-Proply bromide on treatment with ethanolic KOH is
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Question 12 of 20
12. Question
Acetylene is prepared by the action of water on
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Question 13 of 20
13. Question
Water product is obtained on electrolyzing potassium fumarate
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Question 14 of 20
14. Question
What product is obtained by heating ethylidene chloride with alcoholic KOH
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Question 15 of 20
15. Question
What product is obtained by passing ethanol vapours over heated alumina
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Question 16 of 20
16. Question
Ethane is obtained by electrolyzing
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Question 17 of 20
17. Question
Domestic cooking gas consists of mostly
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Question 18 of 20
18. Question
The main source of most organic compound is
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Question 19 of 20
19. Question
Liquid hydrocarbon is converted to a mixture of gaseous hydrocarbons by
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Question 20 of 20
20. Question
Which of the following is used as antiknock?
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Hydrocarbons4
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Question 1 of 20
1. Question
Among the following compounds the one that is most reactive towards electrophilic nitration is
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Question 2 of 20
2. Question
Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
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Question 3 of 20
3. Question
Ethyl benzene CANNOT be prepared by ______.
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Question 4 of 20
4. Question
Ozonolysis of an organic compound ‘A’ produces acetone and propionaldehyde in equimolar mixture. Identify ‘A’ from the following compounds
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Question 5 of 20
5. Question
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of
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Question 6 of 20
6. Question
A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.
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Question 7 of 20
7. Question
Which one of these is NOT TRUE for benzene?
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Question 8 of 20
8. Question
The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
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Question 9 of 20
9. Question
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is
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Question 10 of 20
10. Question
The angle strain in cyclobutane is
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Question 11 of 20
11. Question
The overlapping of orbitals in benzene is of the type
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Question 12 of 20
12. Question
Ethyl alcohol is heated with conc. H2SO4. The product formed is
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Question 13 of 20
13. Question
An aqueous solution of a substance on electrolysis gives ethane. The substance is
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Question 14 of 20
14. Question
Which gas is obtained on treating aluminium carbide with diluted HCl
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Question 15 of 20
15. Question
Gasoline has the formula
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Question 16 of 20
16. Question
Marsh gas mainly contains
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Question 17 of 20
17. Question
Pyrolysis of coal with heavy oil in presence of H2 at 250 atm. 350oC and catalyst yields.
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Question 18 of 20
18. Question
Organic compounds are found only in.
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Question 19 of 20
19. Question
Organic compound can be formed by.
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Question 20 of 20
20. Question
n-pentane and iso pentane can be distinguished by