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Q49) Oxalic acid when heated with H2SO4 , gives




SOLUTION


Answer: (b)


Q50) Which of the following is called sulphuric anhydride? [ JIPMER 1997]




SOLUTION

SO3 + H2O → H2SO4 thus SO3 called as sulphuric anhydride
Answer: (b)


Q51) Na2CO3 reacts with SO2 in alkaline solution to give .. [ CPMT 19996]



SOLUTION

Na2CO3 + SO2 → Na2SO3 + CO2
Answer:(a)



Q52) Which of the following bonds has the highest energy? [ CBSE PMT 1996]



SOLUTION


Answer: (c)


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