Tag: air and atmosphere

Quizzes (15) Questions (49)

Questions Related to air and atmosphere

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

When $H _2S$ burns completely in oxygen, the products include:
(1) S
(2) $SO _2$
(3) $H _2O$

  1. If 1, 2 and 3 are correct

  2. If only 1 and 2 are correct

  3. If only 2 and 3 are correct

  4. If only 1 is correct

  5. If only 3 is correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$H _2S$ burns completely in the presence of oxygen as:

${ 2H } _{ 2 }S+{ 3O } _{ 2 }\rightarrow { 2SO } _{ 2 }+2{ H } _{ 2 }O$

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

Give the characteristic test for $O _{2}$ gas.

  1. Lime water test

  2. Potassium permanganate test

  3. Burning candle test

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Characteristic test for oxygen ($O _{2}$) can be performed on the basis that oxygen supports burning. Therefore if we bring a burning candle near the source of oxygen, the intensity of the flame increases.

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

The density of carbon dioxide is around:

  1. $2.98 {kg}/{{m}^{3}}$
  2. $1.98 {kg}/{{m}^{3}}$
  3. $5.0 {kg}/{{m}^{3}}$
  4. $10.0 {kg}/{{m}^{3}}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is colorless. At low concentrations, the gas is odorless. At higher concentrations it has a sharp, acidic odor. At standard temperature and pressure, the density of carbon dioxide is around $1.98  {kg}/{{m}^{3}}$, about $1.67$ times that of air.

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

Carbon dioxide exists in Earth's atmosphere as a:

  1. Metal

  2. Solid

  3. Trace gas

  4. Abundant gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about $0.04$ percent $\left(400   ppm\right)$ by volume. A trace gas is a gas which makes up less than $1$% by volume of the Earth's atmosphere.

Multiple choice chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

Snow and ice, are present as ________ at the poles of the earth, snow-covered mountains, and glaciers.

  1. liquid form

  2. the solid form

  3. the gaseous form

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas (water vapour) in the atmosphere.


Hence, option B is correct.