Name the source from which Aspirin is produced?
1). Willow bark
2). Oak Tree
3). Acacia
4). Eucalyptus
3. Rutherford’s scattering experiment proved the presence of
4. Diamond is harder than graphite because of
6. PVC is obtained by the polymerisation of
7. Which one is a naturally occuring noble gas?
8. Two elements which can form a large number of compounds are
9. The chief source of naphthalene is
10. Which method will be employed to test the hardness of water?