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Soda-acid fire extinguisher involves the reaction between 1 Sodium hydroxide and nitric acid 2 Sodium bi carbonate and sulphuric acid 3 Sodium sulphate and carbonic acid 4 Sodium carbonate and hydrochloric acid
5 15320The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
2 7322A mixture of salt and sand can be separated by 1 Sublimation 2 Dissolving in water 3 Gravity separation 4 Dry distillation
CISF,
3 7211The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as 1 Armatisation 2 Polymerization 3 Pyrolysis 4 Reduction
3 7399Which of the following metals react with nitrogen at room temperature to form nitride? 1 Sodium 2 Potassium 3 Magnesium 4 None of these
3 6117The ore of which of the following metals can be concentrated by hydraulic washing? 1 Tin 2 Sodium 3 Iron 4 Manganese
3 6346Which of the following re synthetic rubbers? 1.Thiokol 2.Isoprene 3.Neoprene 1 1 and 2 2 2 and 3 3 1 and 3 4 1,2 and 3
3 5052How does common salt help in separating soap from the solution after saponification ? 1 By decreasing solubility of soap 2 By increasing solubility of soap 3 By decreasing density of soap 4 By increasing density of soap
4 13610Post New General Science Questions
Who invented telescope?
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iwant to learn robotics so how can iproceed
Science is both a process and product-Substantiate
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a private address 172.116.0.0 will borrow ? bits from the HOST to give one 120 subnets - range = ?
the basic approach to science was established by:
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