Extracting of Metals Towards the Top of the Activity Series

Q. Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of their reactivity.

Q. (i) Arrange the following metals in an increasing order of their reactivity towards water: Zn, Fe, Mg, Na.
(ii) Arrange the following in increasing order of their oxides to get reduced with carbon: Al, Na, Fe, Cu.
(iii) Arrange the following metals in order of decreasing order of their chemical reactivity: Mg, Ca, Cu, Fe, Na, Zn, Pb.

Q.

Name two metals that are more reactive than zinc

Q. A student performs an experiment in which he dipped a copper coil to the silver nitrate solution.

Which of the following is the correct observation related to this experiment?

1. Colour of the solution changes to green.
2. Gray coloured layer of silver appears on the surface of copper coil.
3. The copper coil remains unaffected by the reaction.
4. The colour of the solution remains the same.

Q. Highly reactive metals like sodium and potassium are extracted from their ore by the process of:

1. roasting
2. reduction of metal oxide
3. electrolytic reduction
4. calcination

Q.

The metals like Na, K, Ca, Al cannot be obtained from their compounds by heating with carbon because their metals have more affinity for oxygen than carbon.

1. True

2. False

Q. Why do alkali metal and alkali earth metal show high degree of reactivity?

Q. Which of the following metals are extracted by reducing their metal oxides using carbon?

1. Calcium
2. Iron
3. Magnesium
4. Lead

Q. Show an activity to show reactivity of metals? Explain.

Q.

Which of the following metals cannot be obtained from their compounds by heating with carbon?

1. Sodium (Na)

2. Potassium (K)

3. Zinc (Zn)

4. Copper (Cu)

Q. Which of the following metals are extracted by reducing their metal oxides using carbon?

1. Calcium
2. Iron
3. Magnesium
4. Lead

Q. The following flow chart represents the extraction of _______.

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

Q.

Which of the following process is generally used for extracting sodium metal?

1. Heating

2. Roasting

3. Reducing by carbon

4. Electrolysis

Q. The metals like Na, K, Ca, Al are obtained by:

1. roasting
2. electrolytic reduction
3. calcination
4. simple heating

Q. Which among the following is the least reactive metal?

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

Q. Based on activity series, which of the following elements can be extracted by the process of electrolysis?

1. Calcium
2. Copper
3. Zinc
4. Gold

Q. From the given table, identify the set of metals that cannot be extracted from their ores using carbon reduction method.

1. Set - A
2. Set - B
3. Set - C
4. Both Sets - B & C

Q. Which of the following metals cannot be obtained from their compounds by heating with carbon?

1. Sodium (Na)
2. Zinc (Zn)
3. Potassium (K)
4. Both (A) & (B)