Today am going to share answer to chemistry practical TMA 4 with you guys so let get started;
Question 1 : If a procedure says weigh accurately about 0.8g, which of these balance will you use?
Question 2 : Deliquiscent samples should be stored in the _________.
Question 3 : Fractional distillation is used to purify material containing only small amounts of impurities with much higher or lower boiling
Question 4 : Which of the heating methods will a boiling flask and condenser attached together?
Question 5 : Most samples are hygroscopic,therefore needs to be protected with a________.
Question 6 : I.Electric II. Mechanical III. Hot plate. Which of this/these stirrer is magnetic?
Question 7 : Which of these stirrers allows stirring to done at constant temperature?
Question 8 : I. Voltage II. Temperature III. Air current IV. Level of vibration. Which of these can affect the weighing balance?
Question 9 : When a reaction is said to be thermally ________ , then _______ is necessary .
Question 10 : What is the colour change of a Drierite when it becomes ineffective?
Blue to Pink
Question 11 : The viscosity of all liquids varies inversely with temperature.
Question 12 : What effect does applied force have on viscosity of water?
Remains the same
Question 13 : Soaps,tars, vegetable oils,glue and gels are all examples of ________ liquids.
Question 14 : Safety flame is also as __________ flame in Bunsen burner.
Question 15 : In which of these liquids is the applied force directly related to viscosity?
Question 16 : One of these sources of error cannot easily be detected in the concluding analytical figures.
Question 17 : Which of the seperation technique employs the combination of air and gravity pressure?
Question 18 : If a substance has finite boiling point, it can be concluded that it (is)
Question 19 : What is/are the factors considered in selecting a heating method?
answer Reaction condition,chemicals and physical material properties
Question 20 : In the laboratory,which of the following scale is employed in measuring mass more accurately?