Which of the four tubes containing following chemicals show the brisk effervescence when dilute acetic acid is added to them ?
Which of the four tubes containing following chemicals show the brisk effervescence when dilute acetic acid is added to them ?
i) KOH
ii) NaHCO
iii) K CO
iv) NaCl
A) i & ii
B) ii & iii
C) i&iv
D) i & iii
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