Tag: water too little to waste

Questions Related to water too little to waste

State whether the given statement is true or false:

The presence of harmful or objectionable material in sufficient quantity in water to measurably degrade its quality is called as water pollution.

chemistry water too little to waste pollution of water water pollution planet earth

  1. True

  2. False

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Correct Option: A
Explanation:
The above statement is true. The presence in water of harmful or objectionable material in sufficient quantity to measurably degrade water quality is called as water pollution.

Which of the following decides the standards for drinking water in Europe?

chemistry water too little to waste pollution of water water pollution planet earth

  1. European Environment Protection Agency

  2. European Drinking Water Directive

  3. European Union Standards

  4. European Safe Water Act

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Correct Option: B
Explanation:

Standards of drinking water in Europe is decided by European Drinking water directive.

If BOD value is greater than 17 ppm, then water belongs which of the following to category?

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  1. Normal water

  2. Highly polluted water

  3. Usable water

  4. Slightly polluted water

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Correct Option: B
Explanation:

Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have BOD value 17ppm or more.

Which of the following is not present in Water?

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  1. Antimony

  2. Arsenic

  3. Benzene

  4. Bismuth

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Correct Option: C
Explanation:

Water is a polar solvent and benzene is non-polar in nature so, they are not soluble in each other.

so, benzene is not present in water.

Maximum prescribed limit of $Cu$ in drinking water is:

chemistry water too little to waste pollution of water water pollution planet earth

  1. 2 ppm

  2. 1 ppm

  3. 3 ppm

  4. 5ppm

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Correct Option: C
Explanation:

The Food and Nutrition Board(FNB) recommends dietary copper intakes for adults is 1.5-3.0 mg as Cu is an essential macronutrient. 

If excess Cu in drinking water can cause gastrointestinal tract disturbances and chronic ingestion can cause liver toxicity. 

Thus, the correct option is $C$

 The prescribed upper limit concentration of lead in drinking water is about:

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  1. 10 ppb

  2. 40 ppb

  3. 50 ppb

  4. 60 ppb

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Correct Option: C
Explanation:

 The prescribed upper limit concentration of lead in drinking water is about 50 ppb.

The maximum limit of nitrate in drinking water is:

chemistry water too little to waste pollution of water water pollution planet earth

  1. 50 ppm

  2. 40 ppm

  3. 10 ppm

  4. 100 ppm

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Correct Option: A
Explanation:

The maximum limit of nitrate in drinking water is 50 ppm

Maximum prescribed limit of $Zn$ in drinking water is:

chemistry water too little to waste pollution of water water pollution planet earth

  1. 1 ppm

  2. 10 ppm

  3. 4 ppm

  4. 5 ppm

Show answer
Correct Option: D
Explanation:
$\Rightarrow$  Zinc is one of the important trace elements that play a vital role in the physiological and metabolic process of many organisms. Nevertheless, higher concentrations of zinc can be toxic to the organism. 
$\Rightarrow$  It plays an important role in protein synthesis and is a metal which shows fairly low concentration in surface water due to its restricted mobility from the place of rock weathering or from the natural sources. 
$\Rightarrow$  According to the standards maximum prescribed limit of $Zn$ in drinking water is $5\,ppm$

Which of the following Bacteria is responsible for the Gastrointestinal Disease?

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  1. E. coli

  2. S. Faecalis

  3. Both $A$ and $B$

  4. Saurous

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Correct Option: C
Explanation:

Gastrointestinal diseases refer to diseases involving the gastrointestinal tract, namely the esophagus, stomach, small intestine, large intestine and rectum, and the accessory organs of digestion, the liver, gallbladder, and pancreas.

E. coli (Escherichia coli) is the name of a germ, or bacterium,that lives in the digestive tracts of humans and animals. There are many types of E. coli, and most of them are harmless. But some can cause bloody diarrhea.

Enterococcus faecalis – formerly classified as part of the group D Streptococcus system – is a Gram-positive, commensal bacterium inhabiting the gastrointestinal tracts of humans and other mammals

Environmental pollution refers to:

chemistry water too little to waste pollution of water water pollution planet earth

  1. peeling of top soil

  2. dissipation of energy

  3. release of toxic/undesirable materials in environment

  4. None of these

Show answer
Correct Option: C
Explanation:

Pollution is the release of harmful substances or energy into the environment by man in quantities that damage health and resources. The polluted air is undesirable for breathing, for the condition of buildings and monuments exposed to it or for animal and plant life. The polluted soil and land undesirable for raising food and fodder for animals or for recreation and aesthetic enjoyments.