Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?

Related Mcqs:

All of the following statements are incorrect except:

A. Precision and accuracy should go side by side in a scientific work B. Scientific work must be precise, accuracy is not essential C. Scientific work must be accurate, precision is not essential D. Calculations must be made before any experiment...

Which of the following is a best conductor of electricity?

A.copper B.silver C.iron D.cobalt  ...

General Science

Almost 20℅ of oxygen in the world is produced by ___? a Sea water b Amazon Forest c Sahara Forest d None of them...

Yeast is used in making bread because it produces?

A: Oxygen B: Carbon Dioxide C: Nitrogen D: None of above...

Cancer can be treated by ?

A: Antibiotics & vaccines B: Radiotherapy & antibiotics C: Chemotherapy & radiotherapy  D: Antibiotics & Chemotherapy...