Question

solve all questions from q.no F

Answer 1

oxygen :A glowing splint is held above a glass tube, in which oxygen gas is trapped. When the stopcock is opened, oxygen gas rushes out, and ignites the glowing splint.

carbon dioxide: Carbon dioxide. A lighted wooden splint goes out in a test tube of carbon dioxide but this happens with other gases, too. It is better to bubble thetest gas through limewater - calcium hydroxide solution. Carbon dioxideturns limewater cloudy white

hydrogen chloride: Ammonia. Ammonia has a characteristic sharp, choking smell. It also makes damp red litmus paper turn blue. Ammonia forms a white smoke of ammonium chloride whenhydrogen chloride gas, from concentrated hydrochloric acid, is held near it.

ammonia :Ammonia has a characteristic sharp, choking smell. It also makes damp red litmus paper turn blue. Ammonia forms a white smoke of ammonium chloride when hydrogen chloride gas, from concentrated hydrochloric acid, is held near it.

water vapour : 1) Water or its vapour will turn cobalt chloride paper from blue to pink. anhydrous copper(II) sulfate crystals from white to blue. 3) Water melts at 0°C and boils at 100 °C.

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