ALLOTROPIC FORMS OF CARBON CARBON AND ITS COMPOUNDS 04 Class 10th Chemistry (Practice Sheet) 1 Which of the following is an allotrope of carbon with a hexagonal crystal structure? A. Diamond B. Graphite C. Charcoal D. Lampblack 2 What is the density of diamond? A. 2.3 B. 3.5 C. 1.0 D. 2.0 3 Which allotrope of carbon is a good conductor of electricity? A. Diamond B. Graphite C. Charcoal D. Coal 4 What gas is produced when diamond burns in the air at 900°C? A. CO B. CO2 C. O2 D. CH4 5 What is the general formula for alkynes? A. CnH2n B. CnH2n+2 C. CnH2n-2 D. CnHn 6 How does the conductivity of graphite differ from that of diamond? 7 Provide three uses of graphite in various industries. 8 What is catenation, and how does it contribute to the versatility of carbon? 9 Name one saturated hydrocarbon and one unsaturated hydrocarbon and provide their general formulas. 10 Explain the concept of isomerism in organic chemistry. Page 1 Email: Phone No: Website:
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