In 2013, Planck measured the age of the universe at ___________? April 15, 2025 by admin A. 13.82 billion years B. 4.53 billion years C. 4.6 billion years D. 4.53 billion years
Human beings use _______ liters of pure oxygen per day. April 15, 2025 by admin A. 550 B. 2500 C. 1,050 D. 10,000
The yellow colour in photochemical smog is due to the presence of____________? April 15, 2025 by admin A. Sulphur dioxide B. Carbon dioxide C. Nitrogen dioxide D. CFC’s
Why normal rain is slightly acidic? April 15, 2025 by admin A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid C. Ozone depletion D. All of these
Disolved oxygen (DO) in water should be? April 15, 2025 by admin A. 400 to 800 ppm B. 4000 to 8000 ppm C. 0.4 to 0.5 ppm D. 4 to 5 ppm
Montreal Protocol 1987 was__________? April 15, 2025 by admin A. Treaty among nations to reduce nuclear arsenals B. Climate control treaty C. Treaty to protect ozone layer D. Trade policy about tarrifs
How many meters are in one mile? April 15, 2025 by admin A. 1409.34 B. 1509.34 C. 1609.34 D. None of Above
As a result of which treaty, ozone hole in Antarctica is slowly healing? April 15, 2025 by admin A. Koyoto protocol B. Ottawa treaty C. Montreal protocol D. Oslo Accord
The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect April 15, 2025 by admin A. Nitrogen Dioxide (NO2) B. Chlorofluorocarbons (CFCs) C. Methane (CH4) D. High-fructose corn syrup (HFCs)
