Q.1 Definematter?Giveexamples. [1] Q.2 Whyisnucleuscalleddirectorofthecell? [1]
Q.3 Whatismeantbyangularvelocity?WriteitsSIunit. [2]
Q.4 Whendowesaytheaccelerationofabodyiszero? [2]
Q.5 Givereasonforthefollowingobservationthesmellofhotsizzlingfoodreachesyouseveralmetres
away,buttogetthesmellfromcoldfoodyouhavetogoclose? [2]
Q.6 WhyareMitochondriaknownaspowerhouseofthecell? [2]
Q.7 Aracingcarhasauniform accelerationof4ms
–2.Whatdistancewillitcoverin10secondsafterthe
start? [3]
Q.8 Ascooteracquiresavelocityof36km perhourin10secondsjustafterthestart.Calculatethe
acceleration
ofthescooter. [3]
Q.9 Differentiatebetweenevaporation&boiling. [1×3=3]
Q.10 Define-a)Diffusion b)Osmosis [3]
Q.11 HowdoesAmoebaobtainitsfood? [3]
Q.12 Explainusingdistance–timegraphs [1+1+3=5]
a)Whenthebodyisatrest
b)Whenthebodyismovingwithauniformspeed
c)Whenthebodyismovingwithanon-uniformspeed.
Q.13 Writethevariousfactorswhichaffectstherateofevaporation? [1×5=5]
Q.14 Differentiatebetweenprokaryoticandeukaryoticcell.
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