With what metal, chocolates, cigarettes etc. are wrapped ?
What variety of carbon is used for refining purposes ?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
Explain the structure of a dna molecule?
Distinguish between flannel and flannelette ?
How is measurement of ph made?
Why is starch indicator added towards the end point?
What is an alloy ?
How many millilitre is equal to 1 litre and how many microliter is equal to litre?
Define Atom ?
How is the accuracy of the method determined?
why bottles of Hazardous chemicals or solvent are available in round shaped only?
Explain about Match Industry ?