Description : Look at the following gases: 1. Carbon dioxide 2. Helium 3. Nitrogen 4. Oxygen The two most abundant gases in the atmosphere are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4
Last Answer : Ans:(c)
Description : (2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass ... elements combined. A well-known but minor use is as a lifting gas in balloons and airships
Last Answer : Ammonial is a mixture of – (1) aluminium powder and ammonium nitrate (2) aluminium powder and ammonium chloride (3) aluminium powder and ammonium sulphate (4) aluminium powder and potassium nitrate
Description : In addition to hydrogen, the other abundant element present on Sun’s surface is - (1) Helium (2) Neon (3) Argon (4) Oxygen
Last Answer : (1) Helium Explanation: The Sun is composed primarily of the chemical elements hydrogen and helium; they account for 74.9% and 23.8% of the mass of the Sun in the photosphere, respectively. All ... out of which it formed: the hydrogen and helium in the Sun were produced by Big Bang nucleosynthesis.
Description : Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy? (1) Earth (2) Moon (3) Venus (4) Saturn
Last Answer : (2) Moon Explanation: The Moon and other celestial bodies contain a vast amount of natural resources. One, and in abundance, is helium-3. It is estimated that forty tons of it can meet twenty five percent of the global energy demand for one year.
Description : In addition to hydrogen, the other abundant element present on Sun’s surface is (1) Helium (2) Neon (3) Argon (4) Oxygen
Last Answer : Helium
Description : Helium gas is used in gas balloons instead of hydrogen gas because it is (1) lighter than hydrogen (2) more abundant than hydrogen (3) non-combustible (4) more stable
Last Answer : non-combustible
Description : The most abundant inert gas in the atmosphere is (1) Helium (2) Neon (3) Argon (4) Krypton
Last Answer : Argon
Description : Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy ? (1) Earth (2) Moon (3) Venus (4) Saturn
Last Answer : Moon