Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?
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Isobars are atoms of different chemical elements that have ______.
Factors that may influence enzyme activity?
___ is the number of shells for elements of the 3rd period.
Which among the following statements are TRUE regarding synthetic fibre?
I. They melt after catching fire.
II. They are more durable.
III. They are prepared by a number of processes using petrochemicals.
Which of the following statements are CORRECT?
I. Esters are sweet smelling substance.II Esters are used in making perfumes.III. Functional group of ester is R-O-RꞋ.
Who first discovered the every eighth element had properties similar to that of the first?
What is formed when helium atom loses one electron?
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