SSLC (English Medium) कक्षा ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Hydrochloric Acid reacts with metal bicarbonates to give ______.

Which of the following metal does not react with sodium hydroxides?

Curd contains ______ acid. 

Which one of the following acids undergoes complete ionisation?

______ contain one or more replaceable hydrogen atoms.

______ acids have a relatively smaller amount of acids dissolved in a solvent. 

Non-metallic oxides are ______ in nature.

Complete the following equation.

HCl + H₂O → ______ + ______.

Complete the following equation.

H⁺ + H₂O → ______.

Complete the following equation.

Mg+ ______ → ______ + H₂.

Complete the following equation.

Na₂CO₃ + 2HCl → ______ + ______ + CO₂↑

Complete the following equation.

ZnO + 2HCl → ______ + ______.

Complete the following equation.

Zn + ______ → Na₂ZnO₂ + H₂ ↑

Complete the following equation.

CaO + H₂SO₄ → ______ + H₂O

Complete the following equation.

HCl + ______ → NaCl + H₂O

Complete the following equation.

Ca(OH)₂ + ______ → ______ + H₂O

Why does blue color copper sulphate become white on heating?

Acidic or basic solutions are good conductors of electricity. Justify your answer.

To Interpret:

CH₄ and NH₃, are not acids.

Match the following: