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प्रश्न
State the inference drawn from the following observation:
A gas Q turns moist lead acetate paper silvery black. Identify the gas Q.
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उत्तर
The gas is H2S.
संबंधित प्रश्न
Give balanced chemical equations to prepare the following salts
Lead sulphate from lead carbonate
The salt solution which does not react with ammonium hydroxide is :
How many types of salts does dibasic acid produce when it reacts with caustic soda solution? Give equation(s)
Name a basic salt.
Name a double salt.
Write the reactions of SO2 and oxides of nitrogen which leads to acid rain formation.
From the formulae listed below, choose one in each case corresponding to the salt having the given description :
AgCI, CuCO3, CuSO4.5H2O, KNO3, NaCI, NaHSO4, Pb(NO3), ZnCO3, ZnSO4.7H2O
(a) An acid salt
(b) An insoluble chloride
(c) On treating with concentrated sulphuric acid, this salt changes from blue to white.
(d) On heating this salt changes from green to black.
(e) This salt gives nitrogen dioxide on heating
Ca(H2PO4)2 is an example of a compound called _______ .
From the formula listed below, choose one, in the following case, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O.
On treating with concentrated sulphuric acid, this salt changes from blue to white.
Give a suitable chemical term for:
A salt formed by incomplete neutralisation of an acid by a base.
