The scale formation in a kinetic used for boiling water is caused by the presence in water of?

What happens when the nitrates of potassium, calcium, zinc and copper are separately heated?

4g each of aluminium foil and aluminium powder were introduced respectively into flasks P and Q.Flask P was treated with warm bench sodium hydroxide and all the aluminium dissolved in one hour. Flask Q was treated with cold sodium hydroxide and all the aluminium dissolved in 10 minutes. What was responsible for Q reacting faster than P?

If one mole of aluminium contains 6 x 1023 atoms of aluminium, how many atoms are contained in 0.9g of aluminium?(Al = 27)

Which one of the following metals is not normally extracted by chemical reduction because of its position in the electrochemical series?

The general formula of an alkyl halide (which represent the halide) is?

An efflorescent compound is a substance that?

<img alt="" class="alignnone size-full wp-image-237408" height="123" src="https://data.ulearngo.com/assets/a89889c7-ab1c-4f1c-b077-1498f8d70dfd" width="300"/>The IUPAC name for

Which of the following represents a precipitation reaction?

1981 JAMB UTME Chemistry Past Questions