The process by which water vapor changes into liquid water is called:

Which of the following is the chemical name for vinegar?

Which of the following is not a fossil fuel?

The main function of the ozone layer is to:

The average adult human has approximately how many liters of blood?

Which of the following elements is required for the formation of bones and teeth?

Which part of the human ear helps in maintaining balance?

The most common blood group found in most populations is:

The main gas used in the process of photosynthesis is:

Which of the following organs is responsible for maintaining balance in the human body?

Which of the following diseases is transmitted by the Anopheles mosquito?