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- 1. Multiple Choice
Identify the ester shown
ethyl butanoate
butyl ethanoate
methyl butanoate
ethyl propanoate
- 2. Multiple Choice
The number of electrons in the L shell of C is
2
4
6
8
- 3. Multiple Choice
----------------------------is a theory made by the Scientist Berzelius in 1809 which assumed that organic compounds are only formed in living cells and it is impossible to prepare them in laboratories.
Vital Force Theory
Star Force Theory
Living Force Theory
Organic Force Theory
- 4. Multiple Choice
Which among these is an aromatic hydrocarbon?
Methane
Butane
Cylcohexane
Benzene
- 5. Multiple Choice
The chemical formula of the next homologue of ethyne is
C3H6
C3H8
C3H4
C2H6
- 6. Multiple Choice
The IUPAC name of the shown compound is:
2-bromo-3-methyl-butan-1-ol
3-bromo-2-methyl-butan-1-ol
2-methyl-2-bromo-butan-1-ol
3-methyl-3-bromo-butan-1-ol
- 7. Multiple Choice
A: The middle zone of candle flame is yellow in colour.
R: Under the heat, some of the wax (paraffin) breaks down into tiny particles of carbon, which is called soot. These particles are heated up under the high temperature and glow with a bright yellow light. This makes candlelight yellow.
Both, A and R, are true and R is the correct explanation of A
Both, A and R, are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
- 8. Multiple Choice
A flame is only produced when gaseous substances burn
True
False
- 9. Multiple Choice
When we heat copper wire in the flame of a gas stove what is its colour?
Pink
Red
Lilac
Bluish green
- 10. Multiple Choice
Which has higher melting point?
Diamond
Graphite
- 11. Multiple Choice
The correct formula of formaldehyde is given by
HCHO
CH3 CHO
C2H5CHO
none of these
- 12. Multiple Choice
Which of the following gas is known as illuminating gas ?
Ethane
Ethene
Ethyne
Propane
- 13. Multiple Choice
Ketones are compounds
containing – OH group attached to alkyl group
containing – C=O group attached to alkyl group
containing –CHO group attached to alkyl group
containing – COOH group attached to alkyl group
- 14. Multiple Choice
Water gas consists of
water vapour and dust
a mixture of carbon monoxide and hydrogen
a mixture of carbon monoxide and nitrogen
water vapour and methane
- 15. Multiple Choice
The bond angle in methane is
1000
109.50
900
60
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