Download App

Environmental Issues — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues2 Marks
Question
What is dobson unit?
✓

Answer

Dobson unit is the simplest unit for measuring ozone concentration. One Dobson unit is the number of ozone molecule required to form a larger of pure ozone 0.01 millimetre thick at 0°C. temperature and one atmospheric pressure Dobson units are mainly used to measure atmospheric ozone level.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1.5 Marks Questions" from Environmental Issues→Environmental Issues — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Which infectious disease spreads the most in humans? Describe the infection and symptoms of this disease.
→
In E.T. techniques, embryos are always transferred into the uterus.
→
Why are proteins synthesized by spirulina called single cell proteins?
→
Compare the advantages and disadvantages of producing genetically modified crops.
→
Linkage and crossing–over of genes are alternatives of each other. Justify with the help of an example.
→
What are restriction enzyme and how are they named.
→
Following is the list of some commercially important products. Give the name of bacteria responsible for producing each of these products.
  1. Citric acid.
  2. Acetic acid.
  3. Butyric acid.
  4. Lactic acid.
→
What is biodiversity? Why is it a matter of concern now?
→
Why invasion of alien species causes decline or extinction of indigenous species ?
→
Differentiate between perisperm and endosperm giving one example of each.
→