Single Displacement Reaction

Q. In a single displacement reaction, the ______ reactive metal displaces the ______ reactive metal from its compound.

1. more, less
2. less, more
3. less, less
4. more, more

Q. In a single displacement reaction, the ______ reactive metal displaces the ______ reactive metal from its compound.

1. more, less
2. less, more
3. less, non
4. non, less

Q. When a piece of lead $\left(\text{Pb}\right)$ is left in blue coloured copper sulphate solution $\left({\text{CuSO}}_4\right)$, the colour of lead changes due to copper deposition. What type of reaction is this?

1. Displacement reaction
2. Neutralization reaction
3. Decomposition reaction
4. Combination reaction

Q.

The reaction in which more reactive element displaces the less reactive element from its compound is called:

1. combination reaction
2. displacement reaction
3. decompositon reaction
4. precipitation reaction

Q. In a single displacement reaction, the ______ reactive metal displaces the ______ reactive metal from its compound.

1. more, less
2. less, more
3. less, less
4. more, more

Q. Iron nails were dipped in a solution kept in a test tube. After half an hour, it was observed that the colour of the solution has changed. The solution present in the test tube before the reaction was that of:

1. Zinc sulphate
2. Copper sulphate
3. Iron sulphate
4. Aluminium sulphate

Q.

Which of the following occurs when crystals of iron$\left(\mathrm{II}\right)$ sulphate are heated?

1. Irritating choking smell is formed.

2. Smell of rotten egg is formed.

3. No reaction takes place.

4. Iron$\left(\mathrm{II}\right)$ salt and water are produced.