what is the formula of diesel,petrol & CNG too?

10 Answers   NTPC,

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What is oxy-hydrogen flame ?

1 Answers  

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What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.

2 Answers   UST,

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Which element is liquid at ordinary temperature ?

3 Answers  

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If you are given two liquids, which look like water, how can you, by two physical tests, prove which one of them may be water ?

2 Answers  

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Why is sometimes a succession of echoes heard ?

1 Answers  

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Why graphite rod is used in nuclear reactor?

0 Answers  

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What is density of a liquid?

0 Answers  

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Explain the Different types of solutions ?

1 Answers  

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What is the octane number range of te petrol used in India ? 1)90-95 2)90-99 3)80-90

8 Answers   Indian Railways,

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With what metal, chocolates, cigarettes etc. are wrapped ?

1 Answers  

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Why it is advised to boil water before drinking ?

1 Answers  

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