Chemistry Class 10th
321. Exosphere is beyond ______.
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
322. Due to presence of ions, ______ is also called as ionosphere.
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
323. The substance that cause pollution are called Pollutants:
A) True
B) False
324. Primary pollutants are substances, which are released directly in the air.
A) True
B) False
325. Which of the following is type of secondary air pollution:
A) Acid Rain
B) Sulpher Oxides
C) Carbon Monoxides
D) Carbon Dioxides
326. Incinerators reduce the solid waste upto:
A) 20 %
C) 50 %
D) 85%
D) 91 %
327. Which of the following is not a type of nature source of particulates?
A) Volcanic Eruption
B) Car Smoke
C) Salt Sprays from Ocean
D) Forest Fires
328. Electrical Discharge during storms produce, which of the following?
A) Carbon dioxide
B) Sulpher Oxide
C) Nitrogen Oxides
D) Carbon Monoxide
329. Rock Weathering produces:
A) Carbon monoxide
B) Sulpher Oxide
C) Nitrogen Oxide
D) Carbon Dioxide
330. Which of the following insect contributes towards the emission of Methane?
A) Ants
B) Grasshoppers
C) Termites
D) Beetles
331. Cars produce ______% of the total carbon monoxide:
A) 30
B) 40
C) 70
D) 75
332. CFCs are used in which of the following:
A) Aerosols
B) Refrigerator
C) Air Conditioners
D) All of the above
333. CO reduces the oxygen carrying ability of Cells:
A) True
B) False
334. Yellowing of Limestone and Marble is due to:
A) Carbon Dioxide
B) Carbon Monoxide
C) Sulpher Dioxide
D) Ozone
335. Rain having pH less than ______ is called acid rain.
A) 3.5
B) 5.5
C)7.5
D) 6.52
336. The Process of enrichment of water with salts and nutrients:
A) Eutrophication
B) Enrichment
C) Blooms
D) None of the above
337. Oxides of Carbon, Nitrogen and Sulpher are highly soluble in:
A) Water
B) Oils
C) Both A and B
D) None of the above
338. The Nitric oxides react with Ozone and produce :
A) Nitrogen Trioxide
B) Oxygen
C) Both A and B
D) None of the above
339. Fishes cannot survive at pH below:
A) 2
B) 4
C) 5
D) 7
340. Frogs can tolerate pH of :
A) 5
B) 6
C) 4
D) 2