Which is the hazardous metallic pollutant in the air of Dhaka city ?

A Arsenic
B Carbon
C Zinc
D Lead

Correct Answer: Lead

Emission of different hazardous substances like particulate matter (PM2. 5, PM10), some gases such as ozone(O3), oxides of sulfur (SOx), nitrogen (NOx) and carbon (CO), some heavy metal (lead, cadmium mercury) at elevated level deteriorate the air quality of Dhaka city.
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#সাধারণ জ্ঞান #ঢাকা জেলা #Bangladesh Bank #Bangladesh Bank - Assistant Director - 2001

Related Questions

If it is 300 kilometers from Dhaka to Chittagong and 180 kilometers form Dhaka to Comilla , what percentage of the distance from Dhaka to Chittagong is the distance form Dhaka to Comilla ?
A 40
B 50
C 60
D 70
If it is 250 miles from Dhaka to Dinajpur and 120 miles from Dhaka to Pabna, what percentage of the distance from Dhaka to Dinajpur is the distance from Dhaka to Pabna?
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A 10 miles
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A 5 miles
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In a class, 30% of the students are from Dhaka District and 20% of them from Dhaka city. What percent of the total students are from Dhaka city?
A .06
B 0.6
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The hazardous metallic pollution in the air of Dhaka city is----.
A Arsenic
B Carbon
C Zinc
D Led
P,Q, R, S, T, V and W are seven friends .Each of them likes a particular fruit, viz. Apple, Banana, pear, Guava , Orange, Mango and Watermelon and each of them has a favorite city, viz. Mumbai , pune, Delhi, Kolkata, chennai, Hyderabad and Cochin . The choices of fruit and favorite city of the seven friends aren't necessarily in the same order. Q likes Mango and his favorite city is chennai . The one shose favorite city is pune likes Watermelon . T's favorite city is Kolkata. R likes Guava and is favorite is not Mumbai. W's favorite city is cochin and he does not lide either Banana or pear. The favorite city of the one who likes Orange is Hyderabad. T does no like pear. P's favorite city is neither Pune nor Hyderabad. S does not like Watermelon . who likes Apple?
A W
B T
C V
D P
The distance between two stations, Dhaka and Chittagong is 450 km. A train starts at 5 pm from Dhaka and moves towards chittagong at an average speed of 60 km/hr. Another train starts from Chittagong at 4:20 pm and moves towards Dhaka at an average speed of 80 km/hr. At what time will the two trains meet?
A 6:10 pm
B 7:05 pm
C 8:15 pm
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The number of mosquitoes, M(x) in millions of Dhaka city depends on rainy seasons' rainfall, x, in inches approximately as: M(x)=12x-x2. What would be the maximum of mosquitoes in Dhaka city?
A 6
B 36
C 12-2x
D 12
Dhaka is a big city. এখানে Dhaka কোন প্রকারের Noun?
A Proper
B Material
C Abstract
D Common

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