Test-MCQ Class 10-NCERT -Science-Chapter 4-Test-3 Chapter 4: Carbon and its Compound Multiple Choice Questions No of Questions : 20 Marks: 20 Please enter your email: 1. Which of the following is the correct representation of electron dot structure of nitrogen? d b c a 2. Structural formula of ethyne is b a d c 3. Pentane has the molecular formula C5 H12. It has 12 covalent bonds 16 covalent bonds 17 covalent bonds 5 covalent bonds 4. Ethanol reacts with sodium and forms two products. These are sodium ethanoate and oxygen sodium ethoxide and oxygen sodium ethanoate and hydrogen sodium ethoxide and hydrogen 5. The correct structural formula of butanoic acid is d a b c 6. The correct electron dot structure of a water molecule is c a d b 7.The name of the compound CH3 — CH2 — CHO is Ethanal Propanal Ethanol Propanone 8. Which of the following represents saponification reaction? c a d b 9. The first member of alkyne homologous series is propyne ethyne ethene methane 10. Drinking alcohol stands for methyl alcohol isopropyl alcohol ethyl alcohol propyl alcohol 11. 1-propanol and 2-propanol are position isomers homologues chain isomers functional isomers 12. The polar end of the sodium stearate soap molecule C17H35COONa contains ____. CH3(CH2)16– chain -COO–Na+ group c18 NA 13. The functional group of ketones is “>C=O” 0 COOH CH=O 14. The structural formula 2-butene is CH3 – CH = CH – CH3 CH3 = CH – CH3 – C ≡ C – CH3 CH3 = CH – CH2 – CH3 16. Which of the following represents cyclohexane: C6H6 C6H14 C6H12 C6H10 17. The chlorination of methane, is an example of ? elimination reaction reduction reaction substitution chain reaction addition reaction 18. 100% pure ethyl alcohol is called denatured alcohol absolute alcohol rectified sprit none of the any 19. The odour of acetic acid resembles that of: Lemon juice Kerosene Vinegar Tomato 20. which of the following has a double bond oxygen molecule diamond molecule NA lemon molecule Loading … Question 1 of 19
