Which of the following molecules is joined by a double covalent bond?
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If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
Which of the following is the best fire-extinguisher?
The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 2nd group and the 4th period?
What is nature of pH of Milk?
Which among the following is not an example of emulsion?
What is contained in Chlorophyll ?
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