Why are the bright circles of light seem under the trees,
when the sun shines?
Answer / guest
Because small spaces between the leaves act like pinholes
and make the images of the sun on the ground
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Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?
Why is clinical thermometer used in preference to and ordinary Fahrenheit thermometer ?
How is arsenic produced?
SET Examination Previous Questions
what is the relation between Total organic carbon and Chemical Oxygen demand?
Importance of Organic Chemistry to Mankind ?
What is the effect of the flashes of lightning during a thunderstorm ?
What are the uses of glacial acetic acid?
Explain the Stable configuration?
A balloon constructed in Calcutta during July-August was found to show cracks at most wooden joints when received at Ferozepore in December. What is the probable cause ?
How is the measurement of ph made?
Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?