science.. 1.Global warming is due to increased production - TopicsExpress



          

science.. 1.Global warming is due to increased production of Answer : Carbon dioxide 2. Which acid is present in lemon Answer : Citric acid 3.Brass is an alloy of copper and Answer : Zinc 4. The hardest natural substanceknown in the world is Answer : Diamond 5.Permanent hardness of water may be removed by the addition of Answer : Sodium carbonate (carbonates of Mg,Na-permanent ­ hardness, bicarbonates of Mg,Na-temporary ­ hardness) 6.Which is the most commonly used bleaching agent Answer : Chlorine 7. Which of the following gas is used in cigarette lighters Answer : Butane 8. Baking Soda is also known as Answer : Sodium bicarbonate 9.What is the main constituent ofsoap Answer : Sodium hydroxide 10.Name a fertilizer that containmaximum amount of Nitrogen Answer : Urea 11.Which compound is called oil ofwintergreen Answer : Methyl Salicylate
Posted on: Mon, 17 Jun 2013 17:04:29 +0000

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