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- 1. Multiple Choice
How many carbons are there in the longest chain?
5
3
1
6
- 2. Multiple Choice
Which of these has the formula C60?
graphite
diamond
fullerene
none of these
- 3. Multiple Choice
Which of the following is the molecular formula of cyclobutane?
C4H10
C4H6
C4H8
C4H4
- 4. Multiple Choice
The property of self-linkage among identical atoms to form long chains is
Superposition
Catenation
Isomerisation
Halogenation
- 5. Multiple Choice
-Methane is a major constituent of
CNG
Bio-gas
Natural Gas
All the above
- 6. Multiple Choice
Which of the following statements about graphite and diamond is true?
They have the same crystal structure
They have the same degree of hardness
They have the same electrical conductivity
They can undergo the same chemical reactions
- 7. Multiple Choice
Covalent compound
has low melting and boiling point
is generally poor conductors of electricity
has weak inter-molecular forces
All of the above
- 8. Multiple Choice
The carbons circled in red...
are double bonded
are sharing two pairs of electrons
are sharing three pairs of electrons
Are sharing three electrons
- 9. Multiple Choice
Formula for Benzene molecule is
C6H12
C6H8
C8H6
C6H6
- 10. Multiple Choice
Prefix 'prop' is used when no. of carbon are
1
3
4
5
- 11. Multiple Choice
Which of the following is the most important source of organic carbon compounds?
Plants
Animals
Coal
Petroleum
- 12. Multiple Choice
Which of the following is/are alkyne?
C3H4
C4H8
C5H12
C6H10
- 13. Multiple Choice
Which of the following compound is saturated hydrocarbon?
I CH3CH2CH2CH3
II CH3CHC(CH3)2
III CH3CH2CH(CH3)2
IV CH3CHCHCH3
I and III
II and IV
I, II and III
I, III and IV
- 14. Multiple Choice
Which of the following is the functional group of an alkene?
C-C
C=C
-OH
-COOH
- 15. Multiple Choice
A hydrocarbon should have minimum how many carbon atoms to show isomerism?
Three
Four
Five
Six
- 16. Multiple ChoiceThe molecular formula for Heptane isC4H10C8H18C5H12C7H16
- 17. Multiple Choice
Alkanes are saturated hydrocarbons. What does this mean?
There are some C=C double bonds present in the molecule
All C atoms are bonded by single covalent bonds
They are very reactive
They have both double and single bond between carbons
- 18. Multiple Choice
The classes of organic compounds found in all living things are
vitamins and minerals
halogen compounds, alcohols, organic acids, and esters
simple carbohydrates and hydrocarbons
carbohydrates, lipids, proteins, and nucleic acids
- 19. Multiple Choice
Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.
isomers
isotopes
polymers
alkanes
- 20. Multiple Choice
General formula of Alkane is
CnH2n+4
CnH2n+2
CnH2n
CnH2n-2
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