Science_CarbonAndItsCompounds_Class10

(Q.1) Why is Diamond the hardest substance ?
(Q.2) Occurrence of carbon in different forms is termed as-
(Q.3) What are the saturated and unsaturated hydrocarbon?
(Q.4) How many double and single bonds are present between carbon atoms in benzene?
(Q.5) The hydrocarbons having the general formula of CnH2n-2 are known as
(Q.6) Alkynes are represented by the general formula
(Q.7) Write the molecular formula of i) alkane ii) alkene iii) alkyne having 8 carbon atoms.
(Q.8) What are Hydrocarbons? Give examples?
(Q.9) Write electron dot structure of ethane and benzene
(Q.10) Write the structural formula of 2-methyl propane
(Q.11) what is unique property of carbon?
(Q.12) Why do carbon forms compounds mainly by covalent bonding?
(Q.13) Give difference in the structure of diamond and Graphite
(Q.14) A molecule of ethane (C2H6) contains
(a) 4 covalent bonds. (b) 5 Covalent bonds. (c) 6 Covalent bonds. (d) 7 Covalent bonds.
(Q.15) Graphite is smooth & slippery and a good conductor of electricity because
(a) Each carbon atom is bonded to three other carbon atoms.
(b) One of the bonds connecting the Carbon atoms is a double bond.
(c) Bonds are strong.(d) Carbon atom is sp hybridised.