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With reference to 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as a replacement for some of the Portland cement contents of concrete. 3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. Select the correct answer using the code given below
Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . A fly crawls around the outside of a circle once.A second fly crawls around the outside of a square once.Which fly travels further ? (1) The diagonal of the square is equal to the diagonal of the circle.(2) The fly crawling around the circle took more time to complete has journey than the fly cawing around the square.
Out of 150 pilots who can fly either Airbus 310 or Airbus 320, 75% can fly Airbus 310 and out of total pilots who can fly Airbus 310, 20% can also fly Airbus 320, then how many pilots can fly Airbus 320?
What is the name of ash, as per IS 3812 (Part 1) : 2013, which is prepared from fly ash or bottom ash or both mixed in any proportion and conveyed or carried in dry form and deposited dry?
In the graph below, the concentration of a particular pollutant in a lake is plotted over (alternate) days of a month in winter (average temperature 10 °C) and a month in summer (average temperature 30 °C) Consider the following statements based on the data shown above: i) Over the given months, the difference between the maximum and the minimum pollutant concentrations is the same in both winter and summer. ii) There are at least four days in the winter month such that the pollutant concentration on those days are within 1 ppm of the pollutant concentrations on the corresponding days in the winter month. Which one of the following options is correct?
A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1 m3/h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m3, the volume of the mixed flow reactor should be increased by a factor of
Give correct answer by using codes given below:
The Environmental approach has led the Supreme Court to derive, adopt and apply a range of principles to guide the development of environmental jurisprudence. Notable amongst the fundamental norms recognised by the court are
1. Every person enjoys the right to a wholesome environment, which is a facet of the right to life guaranteed under Article 21 of the Constitution
2. Enforcement agencies are under an obligation to strictly enforce environmental laws
3. Government agencies may not plead non-availability of funds, inadequacy of staff or other insufficiencies to justify the non-performance of their obligations under environmental laws
4. Stringent action ought to be taken against contumacious defaulters and persons who carry on industrial or development activity for profit without regard to environmental laws
For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
(a) Explain briefly what is Environmental study. (b) Discuss in detail what is Environmental study. (c) Write briefly what is Environmental study. (d) Write a note about Environmental study. In the context of educational evaluation, from the above.
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Historically, volcanic eruptions have caused catastrophic famines. B: Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere (or troposphere); however, they also absorb heat radiated from the Earth, thereby warming the upper atmosphere (or stratosphere). C: One such hazard is that volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature; the melted particles then adhere to the turbine blades and alter their shape, disrupting the operation of the turbine. D: Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption.