Equal volumes of hydrogen and chloride are exposed to diffused sunlight to prepare
(a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
(i) hydrogen chloride
(ii) water
(iii) sodium hydroxide
(iv) hydrochloric acid
(b) The metal which reacts with cold water to produce hydrogen is
(i) magnesium
(ii) aluminium
(iii) calcium
(iv) iron
(c) In metal reactivity series the more reactive metals are at
(i) top
(ii) bottom
(iii) middle
(iv) none
(d) Hydrogen is responsible for producing
(i) heat and light
(ii) hydrogenated oil
(iii) fertilizers
(iv) all of the above
(e) Hydrogen is
(i) combustible
(ii) non-combustible
(iii) supporter of combustion
(iv) neither supporter nor combustible
(f) Water gas is a mixture of
(i) carbon monoxide and oxygen
(ii) carbon monoxide and hydrogen
(iii) hydrogen and oxygen
(iv) hydrogen and nitrogen
What do you observe when
(a) Lead nitrate is heated.
(b) Chlorine water is exposed to sunlight.
(c) Hydrogen peroxide is exposed to sunlight.
(d) H2S gas is passed through copper sulphate solution.
(e) Barium chloride is added to sodium sulphate solution.
What type of chemical reactions take place when :
(a) a magnesium wire is burnt in air ?
(b) lime-stone is heated ?
(c) silver bromide is exposed to sunlight ?
(d) electricity is passed through water ?
(e) ammonia and hydrogen chloride are mixed ?