Class 8 Metals and Non Metals Short Answer Questions
1. Name two soft metals which can be cut with a knife.
2. Which non-metal is essential for our life and all living beings
inhale it during breathing?
3. Name two major non-metals which are present in fertilisers and
enhance the growth of plants.
4. Which non-metal is used to disinfect water?
5. Why are bells made of metals?
6. Which liquid metal is used for making thermometers?
7.Some of the following statements are incorrect. Find the incorrect
statements and correct them.
(a) The property of metals by virtue of which they can be drawn
into wires is called ductility.
(b) Metals are good conductor of electricity but poor conductor
of heat.
(c) Articles made of metals produce ringing sound when struck
hard.
(d) Oxides of non-metals and metals are acidic in nature.
(e) A less reactive metal replaces a more reactive metal from its
salt solution in water
8.Name the following
a)Non metal which is a good conductor of electricity
b)Non metal which is lustrous
C)Metal with highest melting point
d)Most reactive Metal
e)Which gas is released when metal reacts with acid
9.Name the non metal which is added to common salt
10.State whether the following statements are true
or false :-
a. Metals form neutral oxides when react with oxyge
n.
b. Solution of MgO in water turns red litmus paper
to blue.
c. Rust is an oxide of iron.
d. Zinc reacts with water but copper reacts only wi
th steam.
e. Zinc replaces copper from the copper sulphate so
lution.
11.Fill in the blanks :-
a. Non metals are generally ______, so they break i
nto pieces on hammering.
b. Sodium and ______ are soft enough to be cut with
a knife.
c. Strings of musical instruments are made up of a
______ .
d. ______ is the only non metal which is a good con
ductor of heat and electricity.
e. Metals oxides are ______ in nature because their
solution in water turns red litmus
blue.
12.Fill in the blanks :-
a. A pencil lead is made up of a non metal called _
_____ .
b. Non metal do not make a ______ sound when struck
.
c. Non metals are ______ conductors of electricity.
d. Non metals are not good conductors of heat hence
also called as ______ .
e. Bromine is the only non metal which is ______ at
room temperature.
