Noise level inside a jet airliner in normal flight is about ______________ decibels?
Noise level inside a jet airliner in normal flight is about ______________ decibels?
A. 80
B. 100
C. 125
D. 150
Similar Posts
Presence of _____________ bacteria in water causes disease like typhoid?
Presence of _____________ bacteria in water causes disease like typhoid?A. Aerobic
B. Pathogenic
C. Anaerobic
D. Non-pathogenicInorganic impurities causing water pollution is ____________________?
Inorganic impurities causing water pollution is ____________________?A. Fats
B. Carbohydrates
C. Salts of metals
D. ProteinThe maximum CO2 is emitted into the atmosphere by_________________?
The maximum CO2 is emitted into the atmosphere by_________________?A. Combustion
B. Urea
C. Biomass burning
D. TreesReplenishment of dissolved oxygen in water stream polluted with industrial waste occurs by________________?
Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by________________?A. Natural aeration of water stream
B. Photosynthetic action of algae
C. Both A. & B.
D. Neither A. nor B.____________ substances present in sewage are removed in grit chamber during sewage treatment?
____________ substances present in sewage are removed in grit chamber during sewage treatment?A. Organic
B. Fatty
C. Inorganic
D. DissolvedOceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?
Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?A. Forestation
B. Rain
C. Green house effect
D. Vegetation