Double decompostion (२३/११)

Chemical reaction in which two reactants in their solution state mutually exchange their ions tp form two new products is known as

• a. Combination
• b. Decompostion
• c. Displacement
• d. Double displacement

The reaction between an acid and a base is called_________

• a. Combination
• b. Decomposition
• c. Displacemen
• d. Neutrialization

What do you observe when Copper sulphate solution is added to NaOH solution?

• Pale blue ppt.
• Pale red ppt.
• Brown ppt.
• Yellow ppt.

What do you observe when CuO react with Dil. nitric acid?

• Green solution is formed
• Blue solution is formed
• Yellow solution is formed
• Brown solution is formed

What do you observe when Lead nitrate solution is added to ammonium hydroxide solution?

• Pale blue ppt.
• Black ppt.
• Pink ppt.
• chalky white ppt.