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Number of students who obtained more than 69 but less than 140 marks in Maths = 43 +53 = 96 Number of students who obtained either equal or more than 105 marks in Physics = 44 + 31 = 75 So Required % = (96-75)/75 100 = 28%
Identify the metal which is nontoxic in nature.
Which mineral is the ore Of aluminium?
Urea is a —
Which one of the following elements is used in the manufacture of fertilizers?
The electronic configuration of an atom having atomic number 20 is
Burning pyrites ore gives out
Natural rubber is the polymer of:
Conduction band electrons have more mobility than holes because they
Which of the inert gases can form compounds?
The element used for making solar cells is