Chemical formula for sulphurous acid is from General Awaren

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151.

Chemical formula for sulphurous acid is

  • H2SO4

  • H2SO3

  • H3SO3

  • H3SO4


B.

H2SO3


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152.

.............. is made by mixing iron with carbon and metals like chromium, nickel and manganese.

  • Ship

  • Stainless Steel

  • Rust

  • Ozone


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