Extraction of Metals Which Are on the Top of the Reactivity Series

Q. The metal found in free or uncombined state is:

1. Sodium
2. Copper
3. Gold
4. Sulphur

Q. Statement 1: It is easier to extract the metals that are present at the top of the reactivity series.
Statement 2: Metals at the top of the reactivity series are highly reactive in comparison with the metals at the bottom.

1. Both statements are true.
2. Both statements are false.
3. Only statement 1 is true.
4. Only statement 2 is true.

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

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

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. Both Sets - B & C
4. Set - C

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. Both (A) & (B)

Q. Which among the following metals are available in free state in nature?

1. Iron
2. Sodium
3. Gold
4. Zinc

Q.

Which of the following is produced in alkaline scrubbing process and is also called wet slurry?

1. CaSO2

2. CaSO3

3. CaCO3

4. CaO

Q.

Based on the activity series, which of the following can be extracted by electrolysis?

1. Potassium, Sodium and Aluminium

2. Aluminum

3. Potassium

4. Sodium