A. 400 ppm
B. 500 ppm
C. 475 ppm
D. 450 ppm
Correct Answer: 450 ppm ✔
Last Updated: May 23, 2024
Related MCQs
- The classical smog was first observed in the year:
- The term ‘Bio-magnification’ refers to the:
- The photochemical smog was first seen in the year:
- The soil pollution is caused as the industrial furnaces throw:
- Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to:
- The beauty of Taj Mahal is endangered due to:
- Sonic booms’ refer to:
- The ‘blue baby syndrome’ is caused due to pollution by:
- Keeping the frequency of nuclear tests, it is estimated that on an average the five nuclear powers conducted nuclear tests at the rate of:
- Which of the following plants shows insecticidal properties
- The following radioactive isotopes are formed by nuclear fission:
- Common indicator organism of water pollution is:
- Through food chain radioactive Sr (Sr90) is deposited in which part of human body?
- It is moderately quiet between:
- The noise created at the launching of space rocket measures around:
- The waste of steel factories is rich in:
- The noise level of London is around:
- In 1970, several people died in Japan due to pollution of:
- To check sonic booms, control should be exerted over:
- Mark the plant showing insecticidal properties:
- The first nuclear explosion was conducted by USA in:
- Maximum noise pollution in residential areas is due to:
- The radioactive fall out contaminates:
- A major component of gobar gas is:
- A lake with an inflow of domestic sewage rich in organic waste may result in:
- The first nuclear explosion over the city of Hiroshima took place in 1945 on:
- The first nuclear reactor disaster occurred at:
- The concentration of SO2 in the atmosphere is around:
- The nuclear installation should be at a place where there is no inhabitation atleast within:
- A hydrocarbon having the following number of carbon atoms doesn’t exist freely in the atmosphere:
- The ‘Earth summit’ was held at:
- The percentage of air pollution caused due to smoke:
- The particulate matter dispersed in the atmosphere is:
- The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:
- Most harmful heavy metals causing water pollution:
- The most harmful effect of ionising radiations precisely involves:
- In human beings, anoxia is caused due to:
- The first international conference for globalizing the environmental problems ws held at:
- The haemoglobin has maximum affinity for the gas:
- Which of the following is biodegradable pollutant?
- The extent of darkness caused due to smoke can be determined by the help of:
- The light of cities is reduced in comparison to villages due to the presence of:
- The term smog coined by:
- The classical smog was first observed to:
- A disease caused by eating fish contained by industrial waste having mercury compounds is known as:
- If there were no CO2 in the earth’s atmosphere, the temperature of earth’s surface would have been:
- In big cities, air pollution is mainly due to:
- As compared to tap water the BOD of sewage polluted water shall be:
- The major drawback of DDT as a pesticide is that:
- Every pesticide develops its own failure as its repeated use leads to:
- How CO emitted by automobiles prevents transport of O2 in the body tissues?