Home
Class 12
BIOLOGY
Permissible noise levels in a residentia...

Permissible noise levels in a residential area at night time is

A

35 dB

B

40 dB

C

45 dB

D

50 dB

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

Maximum noise permissible during day time in residential areas is

Write 'True' or 'Fasle': Maximum noise pollution in residential areas is due to traffic sirens.

Mass of living matter at a trophic level in an area at any time is called

Radon is a radioactive gas with half-life 56 s.For health reasons,the maximum permissible level of radon in air in a building is set a t 1 radon atom for every .15xx10^(21) molecules of air 1 mol of air in the building is contained in 0.024 m^3 .Calculate ,for this building the maximum permissible number of radon atom in 1.0 m^3 of air

Radon is a radioactive gas with half-life 56 s.For health reasons,the maximum permissible level of radon in air in a building is set a t 1 radon atom for every .15xx10^(21) molecules of air 1 mol of air in the building is contained in 0.024 m^3 .Calculate ,for this building the number of molecules for air in 1.0 m^3 .

Fill ups The amount of food energy produced or obtained or stored by a particular trophic level per unit area in a unit time…………….. .

It is possible that a species may occupy more than the trophic level in an ecosystem at same time. Explain with the help of an example.

Which one of the following animals may occupy more than one trophic level in the same ecosystem at the same time?