Types of Chemical Change or Chemical Reaction - Double Displacement Reaction

Add potassium chromate (K₂CrO₄) into the solution of barium sulphate (BaSO₄).

1. What was the colour of the precipitate formed? Also, write the name of the precipitate.
2. Write down the balanced equation for this reaction.
3. Will you call this reaction a displacement reaction or a double displacement reaction? Why?

When the substance ‘A’ is added to a solution of BaSO₄, a yellow precipitate is formed.

1. What do you think substance A is likely to be?
2. Name the precipitate.
3. Which type of reaction is this?

Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________

Choose and write the correct option.

What is the type of the following reaction?

BaCl₂ + ZnSO₄ →  BaSO₄ + ZnCl₂

If sodium chloride is added to the silver nitrate solution:

a. which precipitate is formed?
b. name the type of reaction.
c. write the chemical equation.

Give scientific reason.

When the gas formed on heating limstone is passed through freshly prepared lime water, the lime water turns milky.

Give scientific reason.

It takes time for pieces of Shahabad tile to disappear in HCl, but its powder disappears rapidly.

Study the following chemical reaction and answer the questions given below:

\[\ce{AgNO3_{(aq)} + NaCl_{(aq)} -> \underset{(Precipitate)}{AgCl_{(s)}}↓ + NaNO3_{(aq)}}\]

1. Identify and write the type of chemical reaction.
2. Write the definition of the above type of chemical reaction.
3. Write the names of the reactants and products of the above reaction.