What happens when a small piece of sodium is dropped into ethanol? (AS2)
Draw the electronic dot structure of ethane molecule (C2H6). (AS5)
How do you appreciate the role of esters in everyday life. (AS6)
Application of concepts
Give the IUPAC name of the following compounds. If more than one compound is possible
name atleast two of them. (AS1)
i. An aldehyde derived from ethane.
ii. A ketone derived from butane.
iii. A chloride derived from propane.
iv. An alcohol derived from pentane.
Explain with the help of a chemical equation, how an addition reaction is used in vegetable
ghee industry. (AS1)
a) What are the various possible structural formulae of a compound having molecular
formulaC3H6O? (AS1)
b) Give the IUPAC names of the above compounds write their structures. (AS1)
c) What is the similarity in these compounds? (AS1)
Write the IUPAC name of the next higher homologue of CH2OHCH2CH3
. (AS1
)
Allotropy is a property shown by which class of substances : elements, compounds or
mixtures? Explain allotropy with suitable examples. (AS1
)
Two carbon compounds A and B have molecular formulae C3H8
and C3
H6
respectively.
Which one of the two is most likely to undergo addition reactions? Justify your answer.
(AS2
)
How do you condemn the use of alcohol as a social practice. (AS7
)
An organic compound with molecular formula C2
H4
O2
produces brisk effervescence on
addition of sodium carbonate / bicarbonate. Answer the following:
a.) Identify the organic compound. (AS1
)
b.) Write the chemical equation for the above reaction. (AS1
)
c.) Name the gas evolved. (AS2
)
d.) How will you test the gas evolved? (AS3
)
e.) List two important uses of the above compound. (AS1
)
1ml of glacial acetic acid and 1ml of ethanol are mixed together in a test tube. Few drops of
concentrated sulphuric acid is added to the mixture and warmed in a water bath for 5 min.
Answer the following:
a. Name the resultant compound formed. (AS2
)
b. Represent the above change by a chemical equation. (AS1
)
c. What name is given to such a reactions? (AS1
)
d. What are the special characteristics of the compound formed? (AS1)