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Specific industries dispose of dyes and organic compounds, which may impart colour to the effluent. What is a major environmental concern of colour as waste when released into water bodies via effluents?

Specific industries dispose of dyes and organic compounds, which may impart colour to the effluent. What is a major environmental concern of colour as waste when released into water bodies via effluents? Correct Answer Dyes increase chlorine demand

Colour due to organic compounds and dyes can cause an increased chlorine demand, reducing the chlorine content in water. Chlorine has the property of disinfectant in the water. The absence of chlorine may cause the water to become a breeding ground for diseases.

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Statement : Drinking water supply to New Bombay has been suspended till further orders from Maharashtra Pollution Control Board following pollution of Patalganga river, caused by discharge of effluents from some chemical industries.

Courses of Action :
I. The industries responsible for discharging effluents into the river should be asked to close down immediately.
II. The river water should immediately be treated chemically before resuming supply.
III. The Pollution Control Board should check the nature of effluents being discharged into the river by industries at regular intervals.
Six friends B1, B2, B3, B4, B5 and B6 are playing a game. Each of them likes one colour among red, yellow, black, white, green and blue. Each of them like one tie among T1, T2, T3, T4, T5 and T6. None of them likes the same colour and None of them likes same tie. One who likes T3 also likes yellow colour. One who likes T5 also likes red colour. B1 don’t like red colour. B6 likes T2 tie and black colour. B2 likes either white colour or green colour. B4 likes T1 tie. One who likes green colour also likes T4 tie. Either B1 or B5 likes T4 tie. B5 like either yellow colour or red colour. If B3 likes T3 tie, then which of the following combination of Tie – Colour – Friend is not correct?
Five movies A, B, C, D, and E are to be released on five different days from Monday to Friday, one movie per day, by keeping the following rules in mind:- [1] Movie D cannot be released on Monday. [2] If movie A is released on Monday then movie D will be released on Friday. [3] If movie D is released on Tuesday then movie B will be released on Monday. [4 ] Movie C is released on the next day of release of movie E. If movie B was released on Tuesday, then which movie was released on Monday?
The notification for six different posts - Clerk, PRO, Lecturer, Accountant, Watchman and Principal- are to be released on consecutive Fridays. The schedule of the releasing is to be in accordance with the following conditions: (i) Clerk post must be released a week before the Watchman post. (ii) Lecturer post must not be released immediately after the first release. (iii) PRO post must be released on the Friday following the Friday on which the Principal post is released. (iv) Accountant post must be released on the fifth Friday and should not be immediately preceded by the PRO post. (v) The Watchman post must not be released last. Which of the following notifications will be released immediately after the PRO post?
Consider the following statements with reference to the mixing of industrial waste water with domestic waste water: 1. The industrial waste water can be mixed with domestic water when it has higher BOD. 2. The industrial waste water can be mixed with domestic water when the pH value of industrial waste water is highly alkaline. Which of the above statements is/are correct?
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
A, B, C, D, E and F are six girls who use 6 different face wash – Pond’s, Lakme, Lotus, Garnier, Himalaya and Kaya (but not necessarily in the same order). They also like six different colours – Red, Blue, Brown, Peach, Black and White (also not necessarily in the same order. A and C do not like a Red colour. The girl who uses Lakme face wash likes Peach colour. The girl who likes White colour does not use Kaya nor Lotus face wash. B neither likes Peach nor Red colour. D does not like a Blue colour but uses a Lotus face wash. The girl who uses Pond’s face wash likes Red colour. C does not use Lakme face wash nor likes white colour. F neither uses Himalaya nor Kaya face wash but likes Brown colour. Who does use Himalaya’s face wash?
Consider a set U of 23 different compounds in a Chemistry lab. There is a subset S of U of 9  compounds, each of which reacts with exactly 3 compounds of U. Consider the following statements:  I. Each compound in U\S reacts with an odd number of compounds. II. At least one compound in U\S reacts with an odd number of compounds. III. Each compound in U\S reacts with an even number of compounds. Which one of the above statements is ALWAYS TRUE?
Which of the following statement(s) is/are CORRECT? I. Carbon compounds linked by only single bond are called saturated compounds. II. Carbon compounds having double or triple bonds are called unsaturated compounds. III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.
By studying all following options, select a pair that uses most closely similar reasoning. a. Researchers have looked at the communication between different animals and found that meerkats have a series of alerts and calls that fail into two categories, greetings and alarms. Since we can be sure that this meerkat is not calling as a greeting, we must accept that he is attempting to raise the alarm. b. Farmers must choose between using organic or non-organic fertilisers on their land. Organic fertilisers can produce a lower crop yield and farmers may find it difficult to change to organic methods if they have been using non-organic methods for some time. Farmers should, therefore, consider the longer-term impacts of their decisions. c. Either young persons are getting cleverer each year or examinations are becoming easier for students to pass. Since there is very little evidence from IQ testing and other supposed benchmarks that young persons are more intelligent now than in the past, we must conclude that the examination system is easier for students today than it was in the past. d. Closed wood burning chulhas are a better way to cook your food than open fire chulhas. Closed wood burning chulhas are highly efficient, whereas the open fire of open fire chulhas loses a great deal of heat in the air. More people should, therefore, use closed wood burning chulhas in their homes.