A. 400 to 800 ppm
B. 4000 to 8000 ppm
C. 0.4 to 0.5 ppm
D. 4 to 5 ppm
Submitted by: Palestine
Correct Answer: D. 4 to 5 ppm ✔
Last Updated: August 24, 2018
Related MCQs
- Why normal rain is slightly acidic?
- The yellow colour in photochemical smog is due to the presence of__________?
- Human beings use _______ liters of pure oxygen per day.
- In 2013, Planck measured the age of the universe at __________?
- Jupiter has ________ known moons.
- The study of heavenly bodies is known as_________?
- kilohertz (kHz) is a unit which measures?
- Which of the following does not pollute the air?
- Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body?
- One Joule is equal to__________?
- ‘Bar’ is the unit of__________?
- “Ornithology” is the study of__________?
- How many Dynes are there in one gram weight?
- The melting point of ice is_________?
- Freezing point of water is__________?
- Wind always blows from area of ________?
- Density of Ice is_________?
- The density of Air is__________?
- How long does it take for the moon to orbit the earth once?
- The distance b/w Earth and Moon is__________?
- The Mirror used in the Automobiles are__________?
- The Time taken for sunlight to reach the Earth is__________?
- The Scientist who told “Heat is a form of Energy” was__________?
- One Quintal is Equal to__________?
- In Space, our Body_______?
- The Percentage of Water used for Drinking in the world is?
- Growth is provided by________?
- Deficiency of Iodine causes:__________?
- Which of the following is not a water soluble vitamin?
- The vitamin Folate works together with __________ to produce new red blood cells?
- Common food sources of Vitamin A are:__________?
- Which of the following is a function of Vitamin A in the body?
- Vitamin C deficiency leads to:__________?
- Most abundant color in Earth is_________?
- The hard, solid rocks, whose composition or texture has been changed by heat or pressure in the Earth are called__________?
- One Astronomical unit is equal to how much Km in whole numbers?
- Nearest galaxy to our milky way is ________?
- Approximate age of milky-way is ________?
- Approximate age of earth is ________?
- Approximate age of moon is _________?
- Approximate age of sun is _________?
- Which gas was discovered on the sun about 151 years ago during total solar eclipse?
- In which layer of atmosphere does commercial aircrafts usually fly?
- Largest moon in our solar system is ________?
- Largest Galaxy in the Universe is_________?
- Cause of Malaria is ________?
- The volume of Blood in a Human body to be approximately _________ of body weight?
- Water vapour beyond the dew point result in_________?
- Japan is called ‘Land of the rising sun’ because:
- what are stars mainly made of ?
- which Planet is Called Earth’s Sister?