Dr. Parul Srivastava Solutions for Chapter: Chemical Reactions and Equations, Exercise 9: PRACTICAL SKILL BASED MCQs

$10$ $\mathrm{mL}$ of freshly prepared iron sulphate was taken in each of the four test tubes. Strips of copper, iron, zinc and aluminium were introduced in different test tubes. A black residue was obtained in two of them. The right pair of metals forming the precipitates is
 

A strip of copper was placed in a beaker containing zinc sulphate solution. On observing the strip the next day, it was noticed that.

What is the colour and formula of sodium sulphate?

What becomes the colour of iron nails after they have been kept in the blue solution of copper sulphate for about 20 minutes?

Barium chloride and sodium sulphate react to produce

The action of water on quick lime is an example of which type of reaction?

What is the nature of the new product which is formed by the action of water on quick lime?

$\mathrm{CaO}$ and ${\mathrm{CO}}_2$ are produced by heating ${\mathrm{CaCO}}_3$_. What is the type of the reaction and the process?