What is wave length?
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Which is the indicator used in the determination of cao I cement solution?
Why metallic tools used by blacksmiths have wooden handles ?
What is glacial acetic acid?
Difference between an Atom and an Ion ?
Why is estimation of copper done at 620 nm wave length?
Why is sodium preserved in kerosene oil ?
Why mud houses are cooler in summer and warmer in winter ?
Why are the bright circles of light seem under the trees, when the sun shines?
Why are leaves of trees green ?
Which wavelengths are visible to human eye?
What is iron ore consists of?
What is the reaction that occurs between iodine and sodium thiosulphate?