Test-MCQ Class 10-NCERT -Science-Chapter 4-Test-2 Chapter 4: Carbon and its Compound Multiple Choice Questions No of Questions : 15 Marks: 15 Please enter your email: 1. Identify the unsaturated compounds from the following (i) Propane (ii) Propene (iii) Propyne (iv) Chloropropane (ii) and (iv) (ii) and (iii) (iii) and (iv) (i) and (ii) 2. Which of the following does not belong to the same homologous series? CH4 C3H8 C4H8 C2H6 3. Ethane with molecular formula C2H6 has 9 covalent bonds 8 covalent bonds 6 covalent bonds 7 covalent bonds 4. Which of the following are correct structural isomers of butane? (i) and (iii) (iii) and (iv) (ii) and (iv) (i) and (ii) 5. In the soap micelles, ionic end of soap is in the interior of the cluster and the carbon chain is out of the cluster the ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster Both ionic end and carbon chain are on the exterior of the cluster Both ionic end and carbon chain are in the interior of the cluster 6. Vinegar is a solution of 5% – 8% acetic acid in water 5% – 8% acetic acid in alcohol 50% – 60% acetic acid in alcohol 50% – 60% acetic acid in water 7. Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of oxidation reaction addition reaction substitution reaction displacement reaction 8. Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of krypton neon helium argon 9. Mineral acids are stronger acids than carboxylic acids because (i) mineral acids are completely ionised. (ii) carboxylic acids are completely ionised. (iii) mineral acids are partially ionised. (iv) carboxylic acids are partially ionised. (i) and (ii) (ii) and (iii) (iii) and (iv) (i) and (iv) 10. While cooking, if the bottom of the vessel is getting blackened on the outside, it means that fuel is wet fuel is burning completely the fuel is not burning completely food is not cooked completely 11.The reaction in which a reagent (partially or completely) replaces atom or group of atoms from saturated compounds or A are called B reaction. Here, A and B respectively refers to unsaturated compounds, substitution unsaturated compounds, addition alkene, addition benzene, substitution 12. The table gives information about some esters and the fragrance they produce. Ester Fragrance Ethyl methanoate Rum Methyl butanoate Apple Ethyl butanoate Pineapple Propyl ethanoate Pear Which structure do the ester compounds in the table have in common? a d b c 13. Carbon exists in the atmosphere in the form of carbon monoxide in traces and carbon dioxide carbon monoxide only coal carbon dioxide only 14. Which of the following statements are usually correct for carbon compounds? These (i) are good conductors of electricity (ii) are poor conductors of electricity (iii) have strong forces of attraction between their molecules (iv) do not have strong forces of attraction between their molecules (i) and (iii) (ii) and (iii) (i) and (iv) (ii) and (iv) 15. A molecule of ammonia (NH3) has only triple bonds only double bonds only single bonds two double bonds and one single bond Loading … Question 1 of 15
