What are filters? Why are they used?
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Explain the ANS Isotope?
When we heat one end of and iron bar, the other end also gets heated up why ?
Do all explosions produce carbon dioxide or carbon monoxide?
Explain the Mixture?
Why does a dog hang out his tongue, when it is hot ?
Is diamond element ?
In winter, on a cold morning, the cement feels colder to the foot than a carpet. Why ?
Give the others form of iron ore.
Though the secondary cell can be recharged again and again, still they have a lifetime. Why?
Explain about Graham?s law of Diffusion ?
how much tds is ok for drinking water
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Which is the indicator used in the determination of cao I cement solution?