Litmus test: select the correct answer — task. Science State Board, Class 8.

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1.

Which of the following gives the result shown above?

\(HCOOH\)
\(NaHCO_3\)
\(Zn(OH)_2\)
\(Al(OH)_3\)

2.

Which of the following gives the result shown above?

Sodium carbonate solution
Sodium hydroxide in water
Sodium chloride solution
Washing soda in water

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