Chemistry - Study Mode

[#276] Main source of lead pollution is from
Correct Answer

(B) Leaded gasoline

Explanation

Solution: Main source of lead pollution is from leaded gasoline.

[#277] An example of major air pollutant is
Correct Answer

(B) Carbon monoxide

Explanation

Solution: Carbon Monoxide (CO) is one of the most harmful pollutants. Other gaseous air pollutants are carbon dioxide, oxides of sulfur, nitrogen, hydrocarbons, hydrogen sulphide, ozone and other oxidants. Particulate pollutants include mist, dust, smog, fumes etc.

[#278] Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher
Correct Answer

(C) B, C

Explanation

Solution: Chloroform was once a widely used anesthetic. Its vapor depresses the central nervous system of a patient, allowing a doctor to perform various otherwise painful procedures. Chronic chloroform exposure can damage the liver where chloroform is metabolized to phosgene.

[#279] Which of the following is an antidiabatic drug?
Correct Answer

(A) Insulin

Explanation

Solution: Insulin is an antidiabatic drug.

[#280] Tear gas used by the police to disperse the mob contains
Correct Answer

(B) Chlorine

Explanation

Solution: Tear gas, formally known as a lachrymatory agent, is a possibly lethal chemical weapon that stimulates the corneal nerves in the eyes to cause tears, pain, and even blindness. The compound 2chlorobenzalmalononitrile (chemical formula: C 10 H 5 ClN 2 ), is the defining component of a "tear gas" commonly referred to as CS gas, which is used as a riot control agent.