Carbon (II) oxide is considered dangerous if inhaled mainly because itcan cause injury to the nervous system
can cause injury to the nervous system
competes with oxygen in the blood
competes with carbon (IV) oxide in the blood
can cause lung cancer
The acid that is used to remove rust is
boric
hydrochloric
trioxonitrate (V)
tetraoxosulphate (VI)
Calculate the volume of 0.5 mol dm-3 H2SO4 that is neutralized by 25 cm3 of 0.1 mol dm-3 NaOH
5.0 cm3
2.5 cm3
0.4 cm3
0.1 cm3
The colour of methyl orange in alkaline medium is
yellow
pink
orange
red
Which of the following salts is slightly soluble in water?
AgCl
CaSO4
Na2CO3
PbCl2
