MEDIUM
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Write a word equation for the chemical reaction involved when sodium reacts with water.

Important Questions on Material : Metals and Non-Metals

EASY
What is the gas liberated when the metals react with dilute acids?
EASY
Which of the following metal in combination with oxygen would yield basic metal oxide?
MEDIUM

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?

MEDIUM

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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HARD
Differentiate between metals and non-metals on the basis of their chemical properties.
EASY
Zn(s) + CuSO4(aq)   ZnSO4(aq) + Cu(s). What type of chemical reaction is shown in the above equation?
MEDIUM
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
What happens when steam is passed over red-hot iron. Write only chemical equation.
MEDIUM

Give reasons-

Why copper is used to make hot water tanks and not steel (an alloy of iron)?

MEDIUM
Give reasons: Sodium, potassium and lithium are stored under oil.
MEDIUM
Why does aluminium not react with water under ordinary conditions?
EASY
Which of the following reacts vigorously with water and slowly with water?
HARD
What is the action of water on magnesium? Write equations of the chemical reactions involved.
MEDIUM
Explain how painting of an iron gate prevents it from rusting.