Occurrence of Metals

Q.

Carnallite is the mineral of

1. Na

2. Ca

3. Mg

4. C

Q.

Which of the following statement is correct?

1. All ores are minerals

2. All minerals are ores

3. Some ores are minerals

4. Ores are not minerals

Q.

Which of the following is a sulphide ore of copper?

1. Azurite

2. Copper glance

3. Cuprite

4. Malachite

Q.

Magnalium is an alloy of aluminium.

1. True

2. False

Q.

Which alkaline earth metal is formed by the decay of uranium?

1. Beryllium

2. Radium

3. Barium

4. Strontium

Q.

Cinnabar is an ore of ____.

1. mercury
2. copper
3. lead
4. calcium

Q.

Oxygen is the most abundant metal in the earth's crust.

1. False

2. True

Q.

Duralumin is an alloy of ?

1. Zn

2. Fe

3. Al

4. Na

Q.

Which of the following statements is correct?

1. All ores are minerals

2. All minerals are ores

3. Some ores are minerals

4. Not all ores are minerals

Q.

The elements or compounds, which occur naturally in the earth's crust, are known as __________.

1. minerals

2. gangue

3. flux

4. ores