CBSE Class 10 Science: Chapter 4 Carbon and its Compounds Quiz
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Questions and Answers

What type of bond is formed by the mutual sharing of electron pairs between two atoms in a molecule?

  • Ionic bond
  • Hydrogen bond
  • Covalent bond (correct)
  • Metallic bond

What is the electronic configuration of carbon?

  • 2, 6
  • 2, 8
  • 2, 4 (correct)
  • 2, 8, 4

What is the atomic number of carbon?

  • 6 (correct)
  • 12
  • 8
  • 14

Why can't carbon form an ionic bond?

<p>It has a high ionization energy (A)</p> Signup and view all the answers

What provides a picture of bonding in molecules in terms of the shared pairs of electrons and octet rule?

<p>Lewis structure (A)</p> Signup and view all the answers

How many electrons does carbon require to achieve the inert gas electronic configuration?

<p>4 (B)</p> Signup and view all the answers

Which property of carbon allows it to form long straight, branched, and ring structures?

<p>Catenation (C)</p> Signup and view all the answers

What is the general formula for saturated hydrocarbons (Alkanes)?

<p>CnH2n+2 (D)</p> Signup and view all the answers

What is the phenomenon in which an element exists in two or more physical states with similar chemical properties called?

<p>Allotropy (A)</p> Signup and view all the answers

Which type of hydrocarbon has two carbon atoms connected by a triple bond?

<p>Alkynes (A)</p> Signup and view all the answers

What is the main reason why most carbon compounds have low boiling and melting points?

<p>Weak force of attraction between molecules (D)</p> Signup and view all the answers

Which type of hydrocarbon has the general formula CnH2n?

<p>Alkenes (C)</p> Signup and view all the answers

What is the property that allows carbon to form stable multiple bonds with itself and with atoms of other elements?

<p>Tetravalent Nature (C)</p> Signup and view all the answers

Which compound is an example of a saturated hydrocarbon (Alkane)?

<p>$C_4H_{10}$ (C)</p> Signup and view all the answers

What is the general formula for unsaturated hydrocarbons Alkenes?

<p>CnH2n (A)</p> Signup and view all the answers

What is the atomic number of carbon?

<p>6 (A)</p> Signup and view all the answers

Why can't carbon form an ionic bond?

<p>It requires a large amount of energy to remove four electrons (A)</p> Signup and view all the answers

What type of bond is formed by the mutual sharing of electron pairs between two atoms in a molecule?

<p>Covalent bond (C)</p> Signup and view all the answers

How many electrons does carbon require to achieve the inert gas electronic configuration?

<p>4 (D)</p> Signup and view all the answers

What provides a picture of bonding in molecules in terms of the shared pairs of electrons and octet rule?

<p>Electron dot structure (A)</p> Signup and view all the answers

What is the general formula for unsaturated hydrocarbons Alkenes?

<p>$C_{n}H_{2n}$ (B)</p> Signup and view all the answers

What is the property that allows carbon to form long straight, branched, and ring structures?

<p>Catenation (A)</p> Signup and view all the answers

Which type of hydrocarbon has the general formula CnH2n+2?

<p>Saturated Hydrocarbons (Alkanes) (C)</p> Signup and view all the answers

What is the phenomenon in which an element exists in two or more different physical states with similar chemical properties called?

<p>Allotropy (D)</p> Signup and view all the answers

What type of hydrocarbon has the general formula CnH2n?

<p>Alkenes (D)</p> Signup and view all the answers

What is the main reason why most organic compounds have low boiling and melting points?

<p>Weak force of attraction between molecules (C)</p> Signup and view all the answers

What provides a picture of bonding in molecules in terms of the shared pairs of electrons and octet rule?

<p>Electron Dot Structure (B)</p> Signup and view all the answers

Which compound is an example of an unsaturated hydrocarbon?

<p>$C_2H_4$ (Ethene) (B)</p> Signup and view all the answers

Which allotrope of carbon has a structure consisting of sp2 hybridized carbon atoms arranged in a hexagonal lattice?

<p>Graphite (C)</p> Signup and view all the answers

Which allotrope of carbon has each carbon atom bonded to four other carbon atoms in a tetrahedral structure?

<p>Diamond (A)</p> Signup and view all the answers

Flashcards

Covalent bond

A bond formed by mutual sharing of electron pairs between two atoms.

Electronic configuration of carbon

The arrangement of electrons in carbon is 2, 4.

Atomic number of carbon

The atomic number of carbon is 6.

High ionization energy

Carbon cannot form an ionic bond due to its high ionization energy.

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Lewis structure

A diagram showing bonding in molecules with shared electron pairs.

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Electrons carbon needs

Carbon requires 4 electrons to achieve an inert gas configuration.

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Catenation

The ability of carbon to form long chains and ring structures.

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General formula of Alkanes

The general formula for saturated hydrocarbons is CnH2n+2.

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Allotropy

The existence of an element in multiple physical forms with similar chemistry.

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Alkynes

Hydrocarbons with two carbon atoms connected by a triple bond.

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Boiling and melting points of carbon compounds

Most carbon compounds have low boiling and melting points due to weak attractions.

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Alkenes

Hydrocarbons that follow the general formula CnH2n.

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Tetravalent Nature

The property of carbon to form four stable bonds.

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Example of alkane

C4H10 is an example of a saturated hydrocarbon (alkane).

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General formula of Alkenes

The formula for unsaturated hydrocarbons Alkenes is CnH2n.

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Element states

Allotropy describes when an element exists in different physical states.

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Main reason for low boiling points

Weak force of attraction between molecules causes low boiling points.

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Electron Dot Structure

Another term for Lewis structure depicting electron pairs.

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Unsaturated hydrocarbon example

C2H4 (Ethene) is an example of an unsaturated hydrocarbon.

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Graphite structure

Graphite consists of sp2 hybridized carbon atoms in a hexagonal lattice.

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Diamond structure

In diamond, each carbon atom is bonded to four others in a tetrahedral structure.

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