The gas present in the stratosphere which filters out some of the sun s ultravio

The gas present in the stratosphere which filters out some of the sun s ultraviolet light and provides an effective shield against radiation damage to living things is

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1) The mass of P₄O₁₀ that will be obtained from the reaction of 1.33 gram of P₄ and 5.07 of oxygen is

2) The gas used in the manufacture of vanaspati from vegetable oil is

3) The most electronegative element among the following is

4) The number of g-molecule of oxygen in 6.02 x 10²⁴CO molecules is

5) The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is