ETEA PAST PAPER 2020 ( PART 7 ) 1. The transition element which does not show variable valency is: Zn Sc Cr Cu 2. Select the organic compound which belongs to Arene family; CH3-O-CH3 C6H6 CH2=CH2 CH3- NH2 3. The type of isomerism existing in a compound of molecular formula C2H60 is: Functional group Chain Position Metamerism 4. Which of the following compounds show geometric isomerism? A D B C 5. Generic formula of cycloalkane is? CnH2n+1 CnH2n-2 CnH2n+2 CnH2n 6. Electrophile in sulphonation of benzene is: HSO3- H2SO4 HSO4 SO3 7. The following has IUPAC name of: 2,3 – tetramethyl butane 3,4 – bis (dimethyl butane) 3,3,4,4 – tetramethyl butane 2,2,3,3 – tetramethyl pentane 8. Acetophenone can be formed by which of the following reaction of benzene? Halogenation Acylation Nitration Alkylation 9. In alkanes, each carbon has hybridization: Sp Dsp Sp3 SP2 10. When CH3 is attached with the benzene ring, it makes the ring: Good Electrophile Good nucleophile Resonance hybrid Extraordinary stable Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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