General studies bits

• Which gas makes up the largest percentage of the Earth's atmosphere?

  Nitrogen

• What is the main function of the enzyme amylase in the digestive system?

  Break down carbohydrates

• What is the S.I unit of frequency?

  Hertz

• Acid turns blue litmus paper into which color?

  Red

• Name the gland which is present above our kidneys?

  Adrenal

• What is the basic unit of our neural system?

  Neuron

• What is the basic unit of our excretory system?

  Nephron

• What is the color of AgBr?

  yellow

• What is the other name of Newton's first law of motion?

  Law of inertia

• What is the color of SO2 gas?

  colorless