Sea weeds are important source of
1). iron
2). chlorine
3). bromine
4). iodine
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1. Which of the inert gases can form compounds
2. Denatured spirit is ethanol mixed with
3. Where does the oxygen that keeps us alive come from?
4. Which of the following gases is most toxic ?
5. Cement is usually a mixture of
6. Milk tastes sour when kept in the open for sometime due to the formation of .
7. Oxygen which is vital for life is a product of photosynthesis and comes from
8. Which of the following is an ore of Aluminium?