Which among the following statements is incorrectfor magnesium metal?(a) It reacts with cold water to form magnesium oxide and evolves hydrogen gas(b) It burns in oxygen with a dazzling white flame(c) It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.(d) It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas

For the following question two statements are given – one labelled Assertion (A) and the other labelled Reason (R).Assertion: Magnesium ribbon burns with a dazzling flame in air.Reason: A white substance magnesium nitride is formed.Select the correct answer to the question.

When non-metals react with water then        A.Hydrogen gas is formed        B.Carbon dioxide gas is formed        C.Non-metals do not react with water        D.None of these.

Q5) 5 A salt is produced in each of the following reactions.P magnesium + dilute hydrochloric acidQ zinc oxide + dilute sulfuric acidR sodium hydroxide + dilute hydrochloric acidS copper carbonate + dilute sulfuric acidWhich statements about the products of the reactions are correct?(i) A flammable gas is produced in reaction P.(ii) Water is formed in all reactions.(iii) All the salts formed are soluble in water.A i, ii and iii B i and ii only C i and iii only D ii and iii only

Group 1 metals react instantly with _____ causing flames/explosions/fizzing whereas magnesium takes several days to produce hydrogen gas

The diagram shows some of the reactions of magnesium.(a) Complete the table to give the identity of substances F, G and H.substance Identitysolution Fgas Gdilute acid H(b) Write a chemical equation for the reaction between magnesium and steam.4. A student was asked by his teacher to perform a flame test on a solid. He used this method.● dip the tip of a clean platinum wire into hydrochloric acid and then into the solid● adjust the air hole of the Bunsen burner to obtain a non - roaring, non – luminousBunsen flame● place the tip of the platinum wire into the edge of the flame● observe the colour in the flame(a) (i) why is it important that the platinum wire is clean?