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Question 11 Mark

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The sodium salt of a long chain fatty acid is called ___________.

Answer

The sodium salt of a long chain fatty acid is called Soap.

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Question 21 Mark

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The IUPAC name of ethylene is _______.

Answer

The IUPAC name of ethylene is Ethene.

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Question 31 Mark

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The property of carbon atoms to form long chains in compounds is called _______.

Answer

The property of carbon atoms to form long chains in compounds is called Catenation.

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Question 41 Mark

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___________ is better than soap for washing clothes when the water is hard.

Answer

Detergent is better than soap for washing clothes when the water is hard.

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Question 51 Mark

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The next higher homologue of ethanol is _________.

Answer

The next higher homologue of ethanol is Propanol.

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Question 61 Mark

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The process of burning of a hydrocarbon in the presence of air to give $CO_2, H_2O$, heat and light is known as ___________.

Answer

The process of burning of a hydrocarbon in the presence of air to give $CO_2, H_2O$, heat and light is known as Combustion.

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Question 71 Mark

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Carbon compounds have usually ________ melting points and boiling points because they are _______ in nature.

Answer

Carbon compounds have usually Low melting points and boiling points because they are covalent in nature.

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Question 81 Mark

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Compounds of carbon with hydrogen alone are called __________.

Answer

Compounds of carbon with hydrogen alone are called Hydrocarbons.

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Question 91 Mark

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The general formula $C_nH_{2n}$ for cycloalkanes is the same as that of _______.

Answer

The general formula $C_nH_{2n}$ for cycloalkanes is the same as that of Alkenes.

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Question 101 Mark

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The form of carbon which is used as a lubricant at high temperature is __________.

Answer

The form of carbon which is used as a lubricant at high temperature is Graphite.

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Question 111 Mark

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The functional group present in ethanol is _________.

Answer

The functional group present in ethanol is -OH (alcohol).

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Question 121 Mark

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The next homologue of $C_2H_5OH$ is _________.

Answer

The next homologue of $C_2H_5OH$ is $C_3H_7OH.$

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Question 131 Mark

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The organic acid present in vinegar is ___________.

Answer

The organic acid present in vinegar is Ethanoic acid.

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Question 141 Mark

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The next higher homologue of ethane is _________.

Answer

The next higher homologue of ethane is Propane.

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Question 151 Mark

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The form of carbon which is known as black lead is __________.

Answer

The form of carbon which is known as black lead is Graphite.

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Question 161 Mark

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The IUPAC name of acetylene is _______.

Answer

The IUPAC name of ethylene is Ethyne.

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Question 171 Mark

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$C_nH_{2n}$ is the general formula of __________.

Answer

$C_nH_{2n}$ is the general formula of Alkanes.

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Question 181 Mark

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Ethene and ethyne are examples of _________ hydrocarbons.

Answer

Ethene and ethyne are examples of Unsaturated hydrocarbons.

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Question 191 Mark

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Hydrocarbons having the general formula $C_nH_{2n+2}$ are called __________.

Answer

Hydrocarbons having the general formula $C_nH_{2n+2}$ are called Alkynes.

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Question 201 Mark

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Ethyne has ________ carbon-hydrogen single bonds.

Answer

Ethyne has Two carbon-hydrogen single bonds.

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Question 211 Mark

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Organic compounds having $ \ \ \ \ \text{O}\\ \ \ \ \ \text{||}\\ -\text{C}-\text{OH}$ functional group are known as _________.

Answer

Organic compounds having $ \ \ \ \ \text{O}\\ \ \ \ \ \text{||}\\ -\text{C}-\text{OH}$ functional group are known as Carboxylic acids.

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