CBSE Guess > Papers > Important Questions > Class X > 2010 > Science > Science By Shubham CBSE CLASS X Q. 1. What is a covalent bond? Q. 2. Why are carbon compounds not able to conduct electricity through them? Q. 3. What are fullerenes? Q. 4. What are saturated hydro-carbons? Q. 5. What are unsaturated hydro-carbons? Q. 6. What are structural isomers? Q. 7. Draw the structural fomulae of two isomers of butane? Q. 8. What are alkanes? Q. 9. What are alkenes? Q. 10. What is homologous series? Q. 11. Write the general scientific names of alcohols and carboxylic acids. Q. 12. What are detergents? Q. 13. What is hydrogenation? Q. 14. Why carbon atoms can not form ionic bounds in the compounds? Q. 15. Draw the structures of diamond and graphite? Q. 16. What type of compound show addition reaction? Explain with an example. Q. 17. Explain the cleaning action of soaps? Q. 18. Differentiate between soap and detergents. Q. 19. write important properties of ethanoic acid. Q. 20. A mixture of oxyzen and ethyne is burnt for welding. Can you tell why a mixture of ethyne and air is not used? Q. 21. What are oxidizing agents? Paper By Shubham |
