Tag: air and water pollution control

Quizzes (7) Questions (151)

Questions Related to air and water pollution control

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

What is the odour of $H _2S$?

  1. Rotten fish

  2. Rotten egg

  3. Pungent

  4. Rotten cabbage
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydrogen sulfide is the chemical compound with the formula $H _2S$. It is a colorless chalcogen hydride gas with the characteristic foul odor of rotten eggs. It is very poisonous, corrosive, and flammable.

Option (B) is the answer.

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which gas on exposure to high concentrations can cause unconsciousness, known as "knockdown," which can be lethal?

  1. Hydrogen sulphide

  2. Galena

  3. carbon-monoxide

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$H _2S$ being toxic causes a wide range of health hazards such as nausea, tearing of eyes, headache or loss of sleep or bronchial problems in some asthma patients; acute exposure causes rapid unconsciousness,' knockdown ' or immediate collapse, death within minutes.

Hence, option $A$ is correct.

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which gas has a high risk of health effects during its release in industries using oil or natural gas?

  1. Galena

  2. Carbon monoxide

  3. Hydrogen sulfide

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$H _2S$ has high risk of health hazards; such as nausea, hearing of eyes, headache or loss of sleep or bronchial problem in some asthama patients; acute exposure causes rapid unconsciousness, 'knockdown' or immediate collapse, death within minutes. 

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which one of these are known as prussic acid?

  1. $HCN$
  2. $HF$
  3. $NH _3$
  4. $PH _3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydrogen cyanide $(HCN)$, sometimes called prussic acid, is a chemical compound with the chemical formula $HCN$. 

It is colourless, extremely poisonous and flammable liquid that boils slightly above room temperature. $HCN$ is produced on an industrial scale and is a highly valuable precursor to many chemical compounds ranging from polymers to pharmaceuticals.

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which one of these is the heaviest known stable nuclide?

  1. $Pb^{208}$
  2. $Pb^{206}$
  3. $Pb^{210}$
  4. $Pb^{204}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lead's four stable isotopes each have 82 protons, a magic number in the nuclear shell model of atomic nuclei. The isotope lead-208 also has 126 neutrons, another magic number, and is hence double magic, a property that grants it enhanced stability: lead-208 is the heaviest known stable nuclide.