Define Vulcanization?
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Why has every parachute a hole in the centre ?
Why be is not soluble in liquid ammonia?
What is flash point ?
Why is ammonia added? Why is that same amount of ammonia added?
Why mud houses are cooler in summer and warmer in winter ?
How are ph and pka related?
Explain extraction of ephedrine from a mineral block?
How do you express the total hardness of water?
Why is the total eclipse of the earth a rare phenomenon ?
What is the difference between caustic soda and washing soda ?
What is chemical oxygen demand?
can we Consider the Purity threshold and Purity angle in place of peak purity for the specificity test for method verification