Choose the most appropriate answer from the following options:
Identify the statement that is incorrect about alkanes:

they are hydrocarbons.

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there is a single covalent bond between carbon and hydrogen.

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they can undergo both substitution as well as addition reactions.

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on complete combustion they produce carbon dioxide and water.

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Solution

The correct option is C they can undergo both substitution as well as addition reactions.
Alkanes only undergo substitution reaction and not addition reaction because of the absence of the unsaturation. All the bonds present in an alkane are single bonds.

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(i) Which of the following statements is wrong about alkanes?
(a) They are all saturated hydrocarbon.
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(ii) Select the acid which contains four hydrogen atoms in it.
(a) Formic acid
(b) Sulphuric acid
(c) Nitric acid
(d) Acetic acid

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Q. Fill in the blanks with the correct words from the brackets:
Alkenes are the (i) ........... (analogous/homologous) series of (ii) ............ (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (iii) ......... (double/single) bonds. Alkenes mainly undergo (iv) .......... (addition/substitution) reactions.

Q. Which of the following pair of carbon compounds will undergo combustion as well as addition reaction?

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Choose the most appropriate answer from the following options:Identify the statement that is incorrect about alkanes:

The correct option is C they can undergo both substitution as well as addition reactions.Alkanes only undergo substitution reaction and not addition reaction because of the absence of the unsaturation. All the bonds present in an alkane are single bonds.

Choose the most appropriate answer from the following options:
Identify the statement that is incorrect about alkanes:

The correct option is C they can undergo both substitution as well as addition reactions.
Alkanes only undergo substitution reaction and not addition reaction because of the absence of the unsaturation. All the bonds present in an alkane are single bonds.