Related Questions

Consider the following statements
1. Acid rain is caused by emission of carbon dioxide, sulphur dioxide and nitrogen oxides.
2. The most important gas which leads to acidification is sulphur dioxide.
Which of the statement(s) given above is/are correct?
In the carbonation of a soft drink, the total quantity of carbon dioxide required is the equivalent of 3 volumes of gas to one volume of water at 0⁰C and atmospheric pressure. Calculate (i) the mass fraction and (ii) the mole fraction of the CO2 in the drink, ignoring all components other than CO2 and water. Basis 1 m3 of water = 1000 kg Volume of carbon dioxide added = 3 m3 From the gas equation, pV = nRT 1 x 3 = n x 0.08206 x 273 n = 0.134 mole. Molecular weight of carbon dioxide = 44 And so weight of carbon dioxide added = 0.134 x 44 = 5.9 kg
Sulphur dioxide causes chlorosis of the leaf. Which of the following is another effect of sulphur dioxide?
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?
What percent of sulphur dioxide concentration is sulphur trioxide concentration in emission sources?
A passage with three blanks,followed by five options, each containingone word, is given. Choose the word thatcan fill all the three blanks.
Emission ____________ are the legalrequirements governing air pollutantsreleased into the atmosphere. Emission___________ set quantitative limits onthe permissible amount of specific airpollutants that may be released fromspecific sources over specifictimeframes. They are generallydesigned to achieve air qualitystandards and to protect human life.Many emissions ____________ focus onregulating pollutants released byautomobiles (motor cars) and otherpowered vehicles. Others regulateemissions from industry, power plants,small equipment such as lawn mowersand diesel generators, and other sourcesof air pollution. While this have beenused to dictate limits for conventionalpollutants such as oxides of nitrogen andoxides of sulphur (NOx and SOx), thisregulatory technique may be used toregulate greenhouse gasses, particularlycarbon dioxide (CO2). In the US, this isgiven in pounds of carbon dioxide permegawatt-hour (lbs. CO2/MWhr), andkilograms CO2/MWhr elsewhere.
The velocity of sound in moist air is more than in dry air because the moist air has
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
The Indian ambient air quality standards prescribe the same concentration allowances for sulphur dioxide and nitrogen dioxide.
Directions : In each of the following questions a statement is given, followed by three conclusions. Give answer :

Statement : The school authority decided to open a summer school this year in the school compound for the students in the age range of 7 - 14 years.

Assumptions :
I. All the students will attend the summer school.
II. All the parents will prefer to remain in the city than going out of town for enabling their children to attend the summer school.
III. Those who cannot afford to go out of station will send their children to summer school.