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Chemistry Acid, Base And Salts Difficulty: Medium

'W'h'i'c'h' 'o'f' 't'h'e' 'f'o'l'l'o'w'i'n'g' 's't'a't'e'm'e'n't's' 'i's' 't'r'u'e'/'f'a'l's'e'?' 'S't'a't'e'm'e'n't':' '1'.' 'H' '2' 'S'O' '4' 'i's' 'u's'e'd' 't'o' 'r'e'm'o'v'e' 's'u'l'p'h'u'r' 'a'n'd' 'o't'h'e'r' 'c'o'm'p'o'u'n'd's' 'i'n' 'p'e't'r'o'l'e'u'm' 'r'e'f'i'n'i'n'g'.' '2'.' 'T'h'e' 'b'a's'i'c' 'n'a't'u'r'e' 'o'f' 's'o'd'i'u'm' 'h'y'd'r'o'x'i'd'e' '('N'a'O'H')' 'i's' 'd'u'e' 't'o' 't'h'e' 'p'r'e's'e'n'c'e' 'o'f' 'h'y'd'r'o'g'e'n' 'i'o'n's'.'

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