What is the element that is in the highest percentage in the composition of the earth ?
1). Silicon
2). Oxygen
3). Magnesium
4). Iron
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3. Which of the following processes is responsible for causing rain?
4. Nucleons are regarded as composites sub-particles known as
5. Question 7.26:Write two uses of ClO2.
6. Which among the following is a carbohydrate ?
7. The (O-H) bond in CH3OH is _____.
8. Which of the following elements has the lowest melting point?