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? a c b d 2. Structural formula of ethyne is d b c a 3. Pentane has the molecular formula C5 H12. It has 17 covalent bonds 5 covalent bonds 12 covalent bonds 16 covalent bonds 4. Ethanol reacts with sodium and forms two products. These are sodium ethoxide and oxygen sodium ethoxide and hydrogen sodium ethanoate and hydrogen sodium ethanoate and oxygen 5. The correct structural formula of butanoic acid is c b a d 6. The correct electron dot structure of a water molecule is a d b c 7.The name of the compound CH3 — CH2 — CHO is Propanone Propanal Ethanol Ethanal 8. Which of the following represents saponification reaction? d c a b 9. The first member of alkyne homologous series is ethene ethyne propyne methane 10. Drinking alcohol stands for ethyl alcohol methyl alcohol propyl alcohol isopropyl alcohol 11. 1-propanol and 2-propanol are position isomers chain isomers functional isomers homologues 12. The polar end of the sodium stearate soap molecule C17H35COONa contains ____. NA CH3(CH2)16– chain c18 -COO–Na+ group 13. The functional group of ketones is CH=O COOH 0 “>C=O” 14. The structural formula 2-butene is CH3 = CH – CH2 – CH3 CH3 – CH = CH – CH3 CH3 = CH – CH3 – C ≡ C – CH3 16. Which of the following represents cyclohexane: C6H10 C6H12 C6H14 C6H6 17. The chlorination of methane, is an example of ? addition reaction elimination reaction substitution chain reaction reduction reaction 18. 100% pure ethyl alcohol is called denatured alcohol none of the any absolute alcohol rectified sprit 19. The odour of acetic acid resembles that of: Vinegar Kerosene Tomato Lemon juice 20. which of the following has a double bond NA oxygen molecule lemon molecule diamond molecule Loading … Question 1 of 19
