MEDIUM
10th CBSE
IMPORTANT
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The picture shows the incomplete chain structure of a carbon compound. The second carbon atom has two free electrons.

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How many oxygen atoms can combine with the second carbon atom to complete the structure?

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Important Questions on Carbon and its Compounds

MEDIUM
10th CBSE
IMPORTANT
Which of these molecules contains a double bond?
MEDIUM
10th CBSE
IMPORTANT

A part of a homologous series is shown below.
C3H4, C4H6, C5H8

Which of these compounds is a part of the series shown above?

HARD
10th CBSE
IMPORTANT

The picture shows the bonds between atoms in two allotropes of carbon.

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Which allotrope is harder? Explain your answer.

MEDIUM
10th CBSE
IMPORTANT

On undergoing complete combustion in an adequate supply of oxygen, an organic compound produces only carbon dioxide and water vapour as the products. 

Based on this information, Which of the following homologous series could the compound belong to?

P alkanes
Q alcohols
R aldehydes

EASY
10th CBSE
IMPORTANT

A compound with which of the following functional groups is most likely to cause the decomposition of baking soda to produce carbon dioxide?

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MEDIUM
10th CBSE
IMPORTANT
1 mole of ethene and 1 mole of ethyne are separately made to completely undergo addition reaction to form the respective saturated compound.
Which of the following will be different for the two reactions?
P The number of moles of the saturated compound formed.
Q The number of moles of the hydrogen consumed.
MEDIUM
10th CBSE
IMPORTANT
Bromine water is a reddish solution of bromine in water. When shaken with an unsaturated hydrocarbon, the red colour of the bromine water disappears because the bromine is used up in an addition reaction.
Kohli has three test tubes containing hexane, hexene and hexyne respectively. Which of the three compounds can he identify using the bromine water test? Give a reason for your answer.
MEDIUM
10th CBSE
IMPORTANT

A carbon compound of molecular formula C5H10O contains a ketone functional group. Draw the structures of three isomers of this compound having a ketone group.