alleryUsing one carbon atom with only hydrogen and chlorine, how many different compounds can be formed?
AFour
BTwo
CThree
DFive
Answer & Solution
Correct answer: D. Five
1. Carbon is tetravalent, so one carbon bonds to four monovalent atoms.
2. The four positions are filled by hydrogen and chlorine in varying counts.
3. Listing them: CH4, CH3Cl, CH2Cl2, CHCl3 and CCl4.
4. Counting gives five distinct compounds.
5. Rule out C: 'three' misses the all-H (CH4) and all-Cl (CCl4) extremes.
6. Rule out A: 'four' forgets one of the mixed-substitution members.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 9 "Carbon Compounds", p.123_
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