CURIOUSITY QUIZ: CARBON AND ITS COMPOUNDS

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Test Your knowledge on 'Carbon and Its Compounds' prepared exclusively according to the NCERT science curriculum for Class-10 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck!

The above picture depicts the precious metal gold which has been crazed for centuries for its lustre and beauty.

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What is the abundance of Carbon in the Earth's crust and in the atmosphere?

1 point

0.05% and 0.03% ( respectively)

0.04% and 0.03% ( respectively)

0.03% and 0.02% ( respectively)

0.02% and 0.03% ( respectively)

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Carbon forms mostly covalent bonds with other elements like Hydrogen to form a number of covalent compounds. Which is true about Covalent compounds?

1 point

They have strong bonds within molecules, but intermolecular forces are weak.

They have low Melting and Boiling points.

They are generally poor conductors of electricity.

All the above are true.

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Although Diamond and Graphite are allotropes of Carbon, Diamond is hard (hardest substance of nature ) while Graphite is soft and slippery. Why?

1 point

Diamond is hard because the carbon atoms in diamond are bonded in a stronger tetrahedral pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in a weaktriangular pattern.

Diamond is hard because the carbon atoms in diamond are bonded in a stronger layer pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in tetrahedral pattern.

Diamond is hard because the carbon atoms in diamond are bonded in a stronger planar pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in tetrahedral pattern.r.

Diamond is hard because the carbon atoms in diamond are bonded in a stronger tetrahedron pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in layers with only weak vanderwall force holding the layers together.

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Carbon has the unique ability to form bonds with other atoms of carbon, giving rise to large molecules. This property is called :

1 point

Isomerism

Catenation

Branching

Carbon ring

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Who first disproved the Vital Force Theory (that the organic compounds can only be formed in living cells and it is impossible to synthesize them in the laboratory) in 1828 by preparing organic substance (Urea) from inorganic substances (Ammonium cyanate) ?

1 point

August Kekulé

Miller and Urey

Charles Darwin

Friedrich Wöhler

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Carbon has most number of compounds in nature because of its ability of :

1 point

Catenation

Tetravalency

Formation of strong bonds with other monovalent elements

All of these

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The bonds that Carbon forms with most other elements are very strong making these compounds exceptionally stable. One reason for the formation of strong bonds by Carbon is its:

1 point

Large size of atom

Small size of atom

Tetravalency

Covalent bondings

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A Homologous series is a sequence of compounds with the same functional group and similar chemical properties in which the adjacent members of the series differ by molecular formula of CH2 and by a molecular mass of :

1 point

12u

14u

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When most Carbon compounds are burnt, what are the products formed?

What sort of chemical reaction is it ?

1 point

Carbon dioxide gas, heat and light (Decomposition reaction)

Carbon dioxide gas, heat and light (Addition reaction)

Carbon dioxide gas, heat and light (Oxidation reaction)

Carbon dioxide gas, heat and light (Substitution reaction)

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Unsaturated hydrocarbons add hydrogen across their double or triple bonds in the presence of catalysts (such as palladium or nickel) to give saturated hydrocarbons. What sort of chemical reaction is it ?

1 point

Oxidation reaction

Reduction reaction

Addition reaction

Hydrogenation

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Vanaspati Ghee (Saturated hydrocarbon) is obtained by passing hydrogen gas to Vegetable oil (Unsaturated hydrocarbon). This process is called :

1 point

Addition

Hydrolysis

Hydrogenation

Oxidation

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Saturated hydrocarbons , in the presence of sunlight, add chlorine which replaces hydrogen atoms one by one. Such reactions are called :

1 point

Addition reaction

Oxidation reaction

Substitution reaction

Displacement reaction

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What is Absolute Alcohol?

1 point

Pure Ethanol containing less than 1% water by weight.

Pure Ethanol containing less than 5% water by weight.

Pure Ethanol containing less than 10% water by weight.

Pure Methanol containing less than 1% water by weight.

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What is Glacial Acetic acid ?

1 point

Pure Acetic acid containing less than 1% water by weight.

Pure Acetic acid containing less than 10% water by weight.

Pure Acetic acid containing less than 5% water by weight.

Pure Acetic acid containing less than 15% water by weight.

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Ethanoic acid (Acid) reacts with absolute ethanol (Alcohol) in the presence of an acid catalyst , a sweet smelling substance is formed.

What is the substance called ?

Where is it used?

What is the reaction called ?

1 point

Soap; Preparation of washing agents; Saponification

Ester; Preparation of perfumes; Esterification

Soap; Preparation of washing agents; Eserification

Ester; Preparation of perfumes; Saponification

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Esters on treating with sodium hydroxide (which is an alkali), the ester is converted back to alcohol and sodium salt of carboxylic acid.

What is this reaction called?

What is its use?

1 point

Esterification; Preparation of Perfumes

Saponification, Preparation of Soaps

Esterification; Preparation of Soaps

Saponification; Preparation of Perfumes

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When Vinegar reacts with Baking Soda , what is the gas formed ?

1 point

Oxygen

Hydrogen

Carbon dioxide

Carbon monoxide

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In an organic compound, what is the type of chemical bond between Carbon-Carbon atoms and between Carbon and other atoms like Hydrogen in a molecule?

1 point

Ionic bond

Covalent bond

Electrovalent bond

Coordinate covalent bond

Clear selection

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