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Select the correct word from the words in bracket
The solution which on heating with `CaCO_3` evolves `CO_2` gas. [conc.`H_2SO_4`/ dil.`H_2SO_4` / dil.HCI]

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Select the correct word from the words in bracket The solution which can be used to distinguish an ammonium salt from a sodium salt. [CuCl_2 "soln"//NH_4OH// dil.H_2SO_4// AgNO_3 "soln"]

Select the correct word from the words in bracket Decomposition of [NaCl//NaHCO_3//NaNO_3] by dil. H_2SO_4 , forms an unstable acid.

Select the correct answer from the choice in brackets. The oxidised product obtained when suphur reacts with conc . H_(2)SO_(4).[H_(2)S//SO_(2)//H_(2)SO_(3)] .

Select the correct word or formula from the same give in bracket : The acid which is not an oxidising agent [Conc HNO_(3)//"Conc"HCl//"Conc".H_(2)SO_(4)]

Conc. H_2 SO_4 is not a

Select the correct answer from the choice in brackets. The reduced product obtained when hydrogen sulphide reacts with conc . H_(2)SO_(4). [ SO_(2)//S//H_(2)O ] .

Select the correct answer from the choice in bracket to complete each sentence: The acid__________ [dil.H_(2)SO_(4), dil. HNO_(3), dil HCl] is not used in the laboratory preparation of hydrogen, using zinc and an acid.

Select the correct answer from the choice in brackets. The salt which reacts with dil . H_(2)SO_(4) acid to given an insoluble ppt. [Cu(NO_(3))_(2)//Zn(NO_(3))_(2)//Pb(NO_(3))_(2)] .

Fill in the blanks by selecting correct word/term given in the brackets. The metal which does not react with water or dilute H_2 SO_4 but reacts with concentrated H_2 SO_4 is __________ (Al/Cu/Zn/Fe)

Select the correct word from the list in bracket to complete each statement . The oxidized product obtained on reaction of H_(2)S gas with dil . HNO_(3) is ________________[Sulphur dioxide /Sulphur/sulphuric acid].