The Killer gas which caused Bhopal gas tragedy in 1984 was________________?

Related Mcqs:

1. Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?

   A. Moderately
   B. Highly
   C. Extremely
   D. Very extremely

2. Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to_________________?

   A. Reynold stresses
   B. Shear forces
   C. Both A. & B.
   D. Neither A. nor B.

3. Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?

   A. Thermosphere
   B. Stratosphere
   C. Troposphere
   D. Mesosphere

4. Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in ‘gas chamber’ is about ______________ ppm?

   A. < 1
   B. 10-100
   C. 100-200
   D. 100-1000

5. Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?

   A. Hydrogen
   B. Acetylene
   C. Carbon monoxide
   D. Ammonia

6. Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is__________________?

   A. Inversely proportional to viscosity of gas
   B. Proportional to the viscosity & density of the gas
   C. Proportional to the pressure of the gas
   D. Both B. and C.

7. Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?

   A. CO2
   B. SO2
   C. Hydrocarbons
   D. CFC (chloro fluoro carbon)

8. Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan_________________?

   A. With greater number of blades
   B. Of increased diameter
   C. Both A. & B.
   D. Neither A. nor B.

9. World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?

   A. Arizona (U.S.A.)
   B. Chernobyl (undivided U.S.S.R.)
   C. Pennsylvania (U.S.A.)
   D. Moscow (U.S.S.R.)

10. Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

    A. Hydrocarbons
    B. Hydrogen fluoride
    C. Hydrogen sulphides
    D. Nitrogen dioxide