Q1. Statements All cats are dogs Some dogs are pets No pet is black Conclusions I At least some cats are pets II Some dogs may be black

Q2. Statements All lights are Sounds No Sound is air All airs are Dusts Conclusions I No air is a light II All sounds being Dusts is a possibility III All Lights being Dusts is a possibility IV Some Sounds are airs

Q3. Statements Some plain are rough Some tough is hard Some rough is tough Some plain is towel Conclusions I Some plain is tough II At least some rough being towel is a possibility III Some hard is tough IV No plain is hard V All towel being plain is a possibility

Q4. Statements All Trees are Branch All Leaf are Stem No Stem is Root No Tree is Leaf Conclusions I Some Stems are not Branch II No Root is Tree III No Leaf is Branch IV All stems are not Root

Q5. Statements All apples are mango Some grapes are banana No mangos are grape Conclusions I No apples are grapes II Some mangos are banana