Which of the following substances is mainly responsible f...
Which of the following substances is mainly responsible for the depletion of the ozone layer?
Oxgyen
Chlorofluorocarbon
Carbon (ll) oxide
Nitrogen (ll) oxide
Correct answer is B
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere
When ammonium, potassium and calcium carbonates are each separately heated ...
Which of the following acids would readily react with CaCO3 to liberate CO2? ...
Consider the reaction represented by the equation below: H2(g) + 12(s) ⇌ 2HI(g) ∆H negative. Whi...
Which of the following is an example of a primary cell? ...
What is the main impurity in haematite?...
Which of the following is not correct of glucose and fructose?They ...