Carbon and its Compounds

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Very Short Answer Type Questions:
1. What is a covalent bond?
2. Write the electronic configuration of carbon.
3. How many electrons are shared by the atoms of a hydrogen molecule?
4. What is a single bond?
5. What is the double bond?
6. In a molecule of ammonia, one atom of nitrogen combines with how many atoms of hydrogen?
7. Which allotrope of carbon is a good conductor of electricity?

Answers:

  1. Answer: A bond formed by the sharing of electrons is called the covalent bond.
  2. Answer: C(6) : 2, 4
  3. Answer: two
  4. Answer: The bond formed by sharing a pair of electrons is called the single bond.
  5. Answer: The bond formed by sharing two pairs of electrons is called the double bond.
  6. Answer: Three
  7. Answer: Graphite

Very Short Answer Type Questions:

  1. Only single bonds are present in which type of hydrocarbons?
  2. A double bond is present in which type of hydrocarbons?
  3. What is the molecular formula of ethane?
  4. What is a homologous series?
  5. A ketone has four carbon atoms. Name this compound.
  6. What is the chemical formula of pentane?
  7. What is the generic formula of alkane?

Very Short Answer Type Questions:

  1. Answer: Saturated Hydrocarbons
  2. Answer: Unsaturated hydrocarbons (Alkene)
  3. Answer: C2H6
  4. Answer: A series of compounds having same functional group is called homologous series.
  5. Answer: Butanone
  6. Answer: C5H12
  7. Answer: CnH2n+2

Fill in the blanks:

  1. Compounds of carbon are also known as ……………..compounds.
  2. Fullerene is an allotrope of ………………..
  3. Oxygen has …………electrons in its outermost shell.
  4. Covalent compounds have ………….melting points.
  5. Allotropes of an element show ………….physical properties.
  1. Answer: Organic
  2. Answer: Carbon
  3. Answer: Six
  4. Answer: Low
  5. Answer: Different

Match Columns:

Column A Column B
(1)    Methane (a)    C8H18
(2)    Propane (b)   C4H10
(3)    Butane (c)    C5H12
(4)    Pentane (d)   C3H8
(5)    Octane (e)   CH4

Match Columns:

Answer: 1→ e, 2 → d, 3 → b, 4 → c, 5 → a

Write True/False for the following:

  1. A number of carbon compounds are very high.
  2. Silicon also makes a large number of compounds.
  3. Carbon makes a bond by sharing of electrons.
  4. The atomic number of carbon is 4.
  5. The hydrogen molecule is atomic.

Answer: 1 → T, 2 → F, 3 → T, 4 → F, 5 → T


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Class10 Chapters

Chemical Reactions and Equations:

Types of Chemical Reaction:

Acids, Bases and Salts:

Common Properties of Acid and Base:

Metals and Non-metals:

Carbon and its Compounds:

Periodic Classification of Elements:

Life processes:

Control and co-ordination in animals and plants:

Reproduction:

Heredity and evolution: 

Conservation of natural resources:

How do Organism Reproduce

Electricity:

Magnetic effects of current:

Sources of energy:

Light

Human’s Eye and Colourful World