What is dextro-rotatory and levo-rotatory?
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Why are the bright circles of light seem under the trees, when the sun shines?
What is kentchin?
If the stopper if a bottle has stuck, sometimes it may be removed by heating the neck, why ?
What s the difference between hard and soft coal ?
Why is the color of the indicator drop remains the same at the end point?
What is the limitation of cod?
What is an alloy ?
Which halogen element is used in halogen light?
however ozone is havier than oxygen still ozone is up there in sky why?
How many electrons does benzene have?
Which element is nether a solid nor a liquid?
pH is having unit?