Chemistry Past Questions and Answers

Which of the following metals does NOT form a stable trioxocarbonate (IV)?

Which of the following sulphides is insoluble in dilute HCl?

When chlorine is passed into water and subsequently exposed to sunlight, the gas evolved is?

A substance Z reacts with NaOH to give salt and water only. When Z is treated with dilute HCl, a gas is evolved which gives a yellow suspension on passing into concentrated H₂SO₄. Substance Z is?

Ammonia gas is normally dried with?