Metals and Non-Metals
Physical/chemical properties, reactivity series, extraction, corrosion, alloys.
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Take a full mock →Q1 · Metals and Non-Metals · EASY
A metal M reacts with dilute hydrochloric acid to produce hydrogen gas. When the same metal is heated in air, it forms a basic oxide. Based on these properties, which one of the following is most likely metal M?
Q2 · Metals and Non-Metals · MEDIUM
An ore of aluminium is purified and then aluminium metal is extracted by electrolytic reduction. During this process, cryolite and fluorspar are added to pure alumina. What is the main purpose of adding these substances?
Q3 · Metals and Non-Metals · HARD
Four metals P, Q, R, and S were tested for their reactivity patterns. The following observations were made: (i) Metal P reacts with cold water to produce hydrogen gas. (ii) Metal Q reacts with steam but not with cold water. (iii) Metal R does not react with water or steam but reacts with dilute HCl. (iv) Metal S does not react with water, steam, or dilute HCl but reacts with concentrated nitric acid. Arrange these metals in decreasing order of their reactivity.
Q4 · Metals and Non-Metals · MEDIUM
A student places iron nails in copper sulphate solution and observes a reddish-brown coating on the nails after some time. Which property of metals is demonstrated in this experiment?
Q5 · Metals and Non-Metals · HARD
When aluminium metal reacts with dilute hydrochloric acid, which gas is evolved and what is its confirmatory test?