MCQ Class 10 Science Chapter 4 Carbon And Its Compounds Advertisement MCQ’s For All Chapters – Science Class 10th 1. The percentage of carbon in the earth’s crust is0.02%0.03%0.2%2%Question 1 of 202. The atomic number of carbon is4568Question 2 of 203. Carbon achieves noble gas configuration byLosing 4 electronsGaining 4 electronsSharing 4 electronsTransferring 2 electronsQuestion 3 of 204. The bond formed by sharing of electron pairs is calledIonic bondCovalent bondMetallic bondHydrogen bondQuestion 4 of 205. The molecule of oxygen containsSingle bondDouble bondTriple bondNo bondQuestion 5 of 206. Nitrogen molecule containsSingle bondDouble bondTriple bondQuadruple bondQuestion 6 of 207. Methane has the formulaCH₄C₂H₆C₂H₄CH₃OHQuestion 7 of 208. In diamond, each carbon atom is bonded toTwo carbon atomsThree carbon atomsFour carbon atomsSix carbon atomsQuestion 8 of 209. Graphite is a good conductor of electricity becauseIt has ionsIt has free electronsIt has covalent bondsIt has weak forcesQuestion 9 of 2010. The first fullerene discovered wasC-20C-40C-60C-80Question 10 of 2011. The property of carbon to form long chains is calledTetravalencyCatalysisCatenationSubstitutionQuestion 11 of 2012. Compounds with only single bonds are calledUnsaturatedSaturatedAromaticCyclicQuestion 12 of 2013. Compounds with double or triple bonds are calledSaturatedUnsaturatedAromaticHeteroatomicQuestion 13 of 2014. Structural isomers haveSame molecular formula, different structuresSame structure, different formulaSame properties, different formulaDifferent atoms, same bondsQuestion 14 of 2015. Cyclohexane has the formulaC₆H₁₂C₆H₆C₄H₁₀C₂H₆Question 15 of 2016. Benzene has the formulaC₆H₆C₆H₁₂C₄H₁₀C₂H₂Question 16 of 2017. Alkanes areSaturated hydrocarbonsUnsaturated hydrocarbonsAromatic compoundsFunctional groupsQuestion 17 of 2018. Alkenes containSingle bonds onlyOne or more double bondsOne or more triple bondsNo bondsQuestion 18 of 2019. Alkynes containSingle bondsDouble bondsTriple bondsAromatic ringsQuestion 19 of 2020. —OH group representsKetoneAldehydeAlcoholCarboxylic acidQuestion 20 of 20 Loading...
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