Ashish took some sugar solution and added yeast to this. He took this mixture in the test tube-A fitted with one-holed cork and fitted the cork with a bent glass tube. He dipped the free end of the glass tube into the test tube-B containing freshly prepared lime water. Which of the following changes would not be observed by him after few hours?One/More correct answer(s)A.Lime water in test tube-B turns milky B.Carbon dioxide and lactic acid are produced in test tube-AC.Glucose is broken down into ethanol and carbon dioxide in test tube-AD.Lime water will remain same as a clear solution

A student sets up an experiment to study human respiration using lime water, test tube and a straw. Lime water is colorless in absence of CO2 and is milky in its presence. When the student blows air through straw into lime water, it turns cloudy. What can be evaluated from it?Oxygen is exhaled during respiration.Water vapours are produced during respiration.Carbon dioxide is exhaled during respiration.Glucose is produced during respiration.

The diagram shows an experiment to investigate the respiration of yeast. Oilprevents oxygen entering the glucose and yeast suspension.If no oxygen is present in the glucose and yeast suspension, what will occur?A Ethanol will be produced and the limewater will stay clear.B Ethanol will be produced and the limewater will go cloudy.C Lactic acid will be produced and the limewater will stay clear.D Lactic acid will be produced and the limewater will go cloudy.

What happens when a solution of an acid is mixed with a solutionof a base in a test tube

The diagram shows some apparatus used to investigate respiration. Yeast, warmwater and substance Z were put into a test-tube. After a while, the limewater began togo cloudy.What is substance Z?A alcoholB glucoseC nitrogenD oxygen

According to the pre-lab presentation, which of the following is a reason for a "false positive" conclusion that a chemical reaction occurred in the test tube?Group of answer choicesTwo clear colorless liquids are combined and produce no visual change (still a clear colorless liquid) when the test tube is agitated.Bubbles are observed after the test tube is agitated.An odor is generated when the test tube is agitated.A red color in the test tube changes to a blue color after the test tube is agitated.