Q 1 – The property of metals by virtue of which metal can be hammered into very thin sheets is called:
(a) ductility
(b) malleability
(c) lustre
(d) sonorous
Q 2 – Non-metals react with oxygen and form:
(a) natural oxides
(b) acidic oxides
(c) basic oxides
(d) none of these
Q 3 – Metals react with oxygen to form:
(a) basic oxides
(c) acidic oxides
(b) neutral oxides
(d) none of these
Q 4 – Metals can form long wires. This property of metals is known as:
(a) sonorous
(c) malleability
(b) ductility
(d) none of these
Q 5 – The best electrical conductor is:
(a) gold
(b) silver
(c) copper
(d) aluminium
Q 6 – Which of the following can be beaten into thin sheets ?
(a) oxygen
(b) carbon
(c) aluminium
(d) phosphorus
Q 7 – The metal which reacts violently with cold water is:
(a) zinc
(b) aluminium
(c) sodium
(d) copper
Q 8 – A liquid metal is:
(a) bromine
(c) iodine
(b) nitrogen
(d) mercury
Q 9 – The gas produced when metals react with sodium hydroxide is:
(a) nitrogen
(c) oxygen
(b) hydrogen
(d) water vapour
Q 10 – The gas produced when metals reacts with dilute acids is:
(a) nitrogen
(b) carbon dioxide
(c) oxygen
(d) hydrogen
Q 11 – Sulphur reacts with hot concentrated nitric acid and produces:
(a) sulphur dioxide
(b) sulphur trioxide
(c) nitrogen dioxide
(d) sulphur dioxide and Nitrogen dioxide
Q 12 – Fill in the blanks
- Metals are ______ of heat and ______
- Iodine is a ______ having lustre.
- ______ and ______ are kept in kerosene to avoid explosion.
- Non-metal oxides are ______ in nature.
- _______ is more reactive than copper.
- Sulphur forms ______ oxides.
Q 13 – True or false
- Metals are non-sonorous.
- Metals react with water.
- Non-metals cannot be converted into wires.
- The only liquid metal is bromine.
- Sodium and potassium do not react vigorously with water and oxygen.
- Basic solution turns red litmus into blue.
Q 14 – Match in the following
Column A | Column B |
1. Metallic oxide | a. Turns red litmus into blue |
2. Sodium | b. Non-metal |
3. A liquid non-metal | c. Basic in nature |
4. Chlorine | d. Kept in kerosene |
5. Basic solution | e. Bromine |
Q 15 – Classify the following into metals and non-metals:
Copper, iron, graphite, sulphur, aluminium, oxygen
Q 16 – What happens when metals react with oxygen?
Q 17 – Mention the physical properties of metals.
Q 18 – Explain the term ‘malleability’ with suitable examples.
Q 19 – What are the differences between metals and non-metals? Explain on the basis of their physical properties.
Q 20 – What is a displacement reaction? Give one example.
Q 21 – Distinguish between metals and non-metals on the basis of their physical properties.
or
Compare the physical properties of metals and non-metals.
Q 22 – Explain chemical properties of metals with examples.
Q 23 – What are the main uses of non-metals?
or
How are non-metals useful to us?
Q 24 – What is reactivity series? Suggest an activity to arrange sodium, magnesium and copper in the order of their decreasing reactivity.
Q 25 – Suggest an experiment to compare the conductivity of electricity by iron, copper, alumini¬um and zinc. Perform the experiment and prepare a short report on the results.
Q 26 – Find out the locations of the deposits of iron, aluminium and zinc in India. Mark these in an outline map of India. In which form are the deposits found? Discuss in the class.