EASY
Earn 100

What do you mean by rusting of iron?

Important Questions on Material : Metals and Non-Metals

MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of 
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Why do we apply paint on iron articles?
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals

Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?

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Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Which of the following metal in combination with oxygen would yield basic metal oxide?
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Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Zn(s) + CuSO4(aq) →  ZnSO4(aq) + Cu(s). What type of chemical reaction is shown in the above equation?
HARD
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Differentiate between metals and non-metals on the basis of their chemical properties.
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Why do we apply paint on iron articles? 
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
What is the gas liberated when the metals react with dilute acids?
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals

Write a chemical equation for the reaction taking place in the test tube. How does the colour of the solution change? What is the change in colour of iron nails? 

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MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be-
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
 State two ways to prevent the rusting of iron.
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
When a copper object is exposed to moist air for a long time, then a green coating is formed on its surface. State whether the green coating is acidic or basic.
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Iron is usually galvanized with 
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Prevention of rusting of iron by coating it with zinc. (Greasing / Galvanisation)
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Iron is galvanized by coating it with
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Which of these is not true about chromium?
MEDIUM
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Which metal is used to galvanise iron to protect it from rusting?
HARD
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
Which property of iron is modified in stainless steel? What is done to do so?
EASY
Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
What is the chemical symbol for iron ? 
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Science>Chemistry>Material : Metals and Non-Metals>Chemical Properties of Metals and Non-metals
A coating of __________ is deposited on iron in bridges and automobiles to provide strength.