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a catalyst in burning fossil fuel
an antioxidant
an antiknock compound
a reductant
The α particles are
The 1st organic compound synthesised in the laboratory was
The absolute value of charge on electron was determined by
The acid rain destroys vegetations because it contains
The acid that can be used as a hypnotic is
The acid which fails to liberate carbon dioxide from sodium bicarbonate is
The acid which is secreted by the glands in the stomach wall is
The activity of radioisotope change with
The agent which is oxidized in photosynthesis is
The air we inhale is mixture of gases. Which of the following gases in the mixture is highest in percentage?