Science Questions

Which of the following is a greenhouse gas released from paddy (rice) fields?

What is the typical pH value of 'pure' water?

Which of the following is a source of CFCs in the atmosphere?

Incineration is the process of waste disposal that involves:

Which of the following pollutants is known to cause 'Global Dimming'?

What is the result of 'thermal pollution' on the metabolic rate of aquatic organisms?

Which of the following is a major contributor to 'Air Pollution' in the Kathmandu Valley?

In the environment, 'BOD' is usually measured over a period of how many days?

What is the study of the relationship between living organisms and their environment called?

Which of the following is an abiotic component of an ecosystem?

Organisms that prepare their own food using sunlight are known as:

What is the primary source of energy for all living organisms on Earth?

A group of individuals of the same species living in a particular area is called a:

Which of the following is a primary consumer?

The process by which plants release water vapor into the atmosphere is:

Which gas is primarily used by plants during photosynthesis?

Which of the following is a decomposer?

In a food chain, what is the role of a lion?

Which layer of the atmosphere contains the ozone layer?

What is the percentage of nitrogen gas in the Earth's atmosphere?