Define Vulcanization?
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Why is the total eclipse of the earth a rare phenomenon ?
Give the others form of iron ore.
What is edta?
Explain the Purification of Organic Compounds ?
Distinguish between lime water and milk of lime ?
Why does the water in tanks and ponds not freeze in winter ?
Why titration in which hcl and h2so4 is use?
Which wavelengths are visible to human eye?
what is the equation for iodine and starch when they are combined?
What are the constituents of cements?
What is the difference between fractionation and distillation?
Explain the Atom?