HARD
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Zinc is more reactive than?

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Important Questions on Sorting Materials into Groups

EASY
Which of the following metal in combination with oxygen would yield basic metal oxide?
EASY
What is the gas liberated when the metals react with dilute acids?
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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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
Zn(s) + CuSO4(aq)   ZnSO4(aq) + Cu(s). What type of chemical reaction is shown in the above equation?
HARD
Differentiate between metals and non-metals on the basis of their chemical properties.
MEDIUM
What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
HARD
What happens when iron nails are put into copper sulphate solution?
MEDIUM
An acidic oxide is produced by the element:
MEDIUM
Choose the acidic oxides, basic oxides and neutral oxides from the following:
Na2O; CO2; CO; SO2; MgO; N2O; H2O.
MEDIUM
The dissolution of AlOH3 by a solution of NaOH results in the formation of which of the following?
MEDIUM
What is the nature of the oxide SO2? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
EASY

Complete the following reaction:

Copper sulphate+Zinc 

EASY
A basic oxide will be formed by the element-
EASY
Which of the following reacts vigorously with water and slowly with water?
HARD
How do metals react with hydrogen? Explain with an example.
MEDIUM
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place.