1) Which method is used to test the present of carbon dioxide,CO2 gas? a) The gas is directed to flow through lime water. b) The gas is directed to flow through potassium dichromate(VII) solution. c) A lighter wooden splinter is brought close to the mouth of the test tube that contains the gas. d) Moist red litmus paper is inserted into the test tube that contains the gas. 2) From the picture, the method is used to test the present of a) Chlorine gas,Cl2 b) Hydrogen gas ,H2 c) Oxygen gas, O2 3) What is the observation that can be obtained from the picture. a) The blue litmus paper turns red. b) The red litmus paper turns blue. c) The blue litmus paper turns red and then white/decolourised. 4) -Pungent smell is and greenish yellow gas is released. The observation is from the test to identify the presence of ________. a) HCl b) NO2 c) Cl2 d) SO2 5) Name the color of gas released for the nitrogen dioxide gas test. a) Greenish yellow b) White c) Colorless d) Brown 6) The splinter rekindles the glowing wooden splinter. a) H2 test b) O2 test c) HCl test 7) The gas released in a test is acidic. Predict the observation when a moist red litmus paper is used. a) Turns to blue. b) Turns to white. c) Remain red. 8) Do you enjoy answering the quiz. a) Yes b) No

GAS TEST

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