Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

English

Gujarati

Hindi

3. Metals and Non-metals

medium

Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

Option A

Option B

Option C

Option D

Solution

Copper does not react with cold water, hot water, or steam. However, iron reacts with steam. If the hot water tanks are made of steel (an alloy of iron), then iron would react vigorously with the steam formed from hot water.

$\underset{\text{ Iron }}{\mathop{3Fe}}\,\,+\underset{\text{ Steam }}{\mathop{\,4{{H}_{2}}O}}\,\,\to \underset{\text{ Iron(II, III) oxide }}{\mathop{\,F{{e}_{3}}{{O}_{4}}}}\,\,+\underset{\text{ Hydrogen }}{\mathop{\,4{{H}_{2}}}}\,$

That is why copper is used to make hot water tanks, and not steel.

Standard 10

Science

You are given a hammer, a battery, a bulb, wires and a switch.

$(a)$ How could you use them to distinguish between samples of metals and non-metals ?

$(b)$ Assess the usefulness of these tests in distinguishing between metals and non-metals.

medium

What type of oxides are formed when non-metals combine with oxygen?

easy

In the electrolytic refining of a metal $M$, what would you take as the anode, the cathode and the electrolyte ?

medium

What are amphoteric oxides? Give two examples of amphoteric oxides.

medium

State two ways to prevent the rusting of iron.

medium

Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).

Solution

Similar Questions

You are given a hammer, a battery, a bulb, wires and a switch. $(a)$ How could you use them to distinguish between samples of metals and non-metals ? $(b)$ Assess the usefulness of these tests in distinguishing between metals and non-metals.

What type of oxides are formed when non-metals combine with oxygen?

In the electrolytic refining of a metal $M$, what would you take as the anode, the cathode and the electrolyte ?

What are amphoteric oxides? Give two examples of amphoteric oxides.

State two ways to prevent the rusting of iron.

Start a Free Trial Now

You are given a hammer, a battery, a bulb, wires and a switch.

$(a)$ How could you use them to distinguish between samples of metals and non-metals ?

$(b)$ Assess the usefulness of these tests in distinguishing between metals and non-metals.