FPA ratings, OX is Oxidizer-& CORR is Corrosive compound, while W indicates 23.
ID: 210841 • Letter: F
Question
FPA ratings, OX is Oxidizer-& CORR is Corrosive compound, while W indicates 23. Name a Carcinogen or Mutagen or Hepatotoon_ 24. In Scientific Notation, 8162 will be expressed 25. The Units of Mass, Length and Volume in Metric System are: _ Short answer 26. How you will prepare 1 L volume of 1M NaOH (MW 40)? 27. While drawing up the liquid with a micropipette, will you push the plunger to 1t or 2nd stop? Why 28. Define LDso or LCso. P.20 29. Why did you use mechanical pipetting (micropipette) over mouth pipetting? 30. During centrifugation, why did you balance the centrifuge tubes? 31. In your 1st lab of micropipette calibration, why did you use the Weighing Boat? 32. While using the Electronic Balance, you"Tamed the weighing boat. What does it mean? 33. In DNA assay, why an UV spectrophotometer was used, instead of a Visible spectrophotometer? 34. What conclusion can you draw from the ODs of your DNA samples at at 260 nm (OD: 0.148) and at 28 OD: 0.350)? Why? 35. In your Lab Safety class, why were you asked to wear a lab coat and gloves during lab activities? page To proExplanation / Answer
23) Name a carcinogen - Aflatoxin.
Aflatoxins are poisonous carcinogens, which are produced by certain molds and develop in soil, decaying vegetation, hay and grains.
24) In scientific notation, 8162 will be expressed in 8.162 x 103.
25) The unit of mass in the metric system - kg.
The unit of length in the metric system - m.
The unit of voume in the metric system - L/ liter.
26) NaOH has the molecular weight of 40. So, to prepare 1L of 1M solution, we required 40 g of NaOH. So, mixing 40 g of NaOH in 1 litre of water prepares 1 M of 1 L NaOH solution.
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