Iron
Sand act as a natural source for the production of which of the following products?
a) plastics
b) polythene
c) rubber
d) glass
The elements of glass are heated to…………. Fahrenheit.
a) 1800o(982o C)
b) 1600o
c) 1400o
d) 1200o
Sodium bicarbonates is used as:
NTS PST24/11/2019 (2:30)
a) fertilizer
b) Baking soda
c) sugar industry
d) disinfectant
Identify the correct statement in the following?
a) hydrogen is inert and helium is explosive
b) hydrogen is explosive and helium is inert
c) hydrogen is light and helium is explosive
d) hydrogen is gas and helium is solid at room temperature
If copper,
aluminum, iron and lead are left in open air which one will rust?
a) copper
b) aluminum
c) lead
d) iron
One of the
limitations for copper plumbing is.
a) it leaks easily
b) it is capable carrying water with a specific pH
c) it is not easy to bend and cut
d) it works only in cold environment
d
by at 2023-02-26 15:04:18