In which of the following, Nitrogen is used?
a) fertilizers and food
b) dyes
c) explosives
d) all of these
Nitrogen is found in which of the following living organisms?
a) plants
b) animals
c) all living things
d) fungi
Aluminum:
Which of the
following is lightweight silver-white metal?
a) iron
b) copper
c) gold
d) Aluminum
Which of the following is very popular in the modern construction industry used in high rise buildings, window frames and structural units?
a) iron
b) copper
c) lead
d) Aluminum
In which of the following, Aluminum is/are used?
a) industrial appliances
b) parts of motor cars
c) aircraft, spacecraft and ships
d) all of these
