Which of the following is used in the preparation of tincture iodine, cough syrup and many tonics?
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Which of the following gases are responsible for the greenhouse gas effect on Earth?
Matter is classified as a
What is the name of the process where gas is directly converted to solids called?
Chemical properties of isotopes .............
Which type of Ethanol is made from sources like molasses, sugarcane, sugar beet, sorghum and edible oil seeds?
In which of the following solution the concentration of H+ ion is the maximum?
Who stated the following law : 'The properties of the elements are the periodic function of their atomic masses'?
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