What is the function of diethyl amine?
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Explain the process of spontaneous combustion?
Why does a pond of clear water appear less deep than it really is?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
Which is the main constituent in air ?
How is librated iodine estimated?
Why mud houses are cooler in summer and warmer in winter ?
Why is sodium preserved in kerosene oil ?
Mention a few application of cod test in environmental engineering practice.
Mention a few important criteria for satisfactory colorimetric analysis.
What is the purpose of adding urea?
What happens when the excess of stannous chloride is not removed
Explain the structure of a dna molecule?