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Environmental Issues

Question

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Modern detergents contain enzyme preparations of

acidophiles

alkaliphiles

thermoacidophiles

thermophiles

Solution

B.

alkaliphiles

Detergents represent the largest industrial application of enzymes amounting to 25-30% of total sales of the enzyme. The enzymes used in detergents must be cost effective, safe to use and be able to perform the task in the presence of anionic and non-ionic detergents, soaps, oxidants etc, at pH between 8-10.5%. The chief enzymes used are proteases, alpha -amylase and sometimes cellulase.

Some More Questions From Environmental Issues Chapter

Smog is a mixture of :

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

Which one of the following is not a green-house gas ?

Which gas contributes the maximum in global warming ?

Fill in the blanks with suitable words :
1. Increase in concentration of soluble salts in the soil is called.........

2. Aforestation can check the advancement of......... .

3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .

4 .........plant has become a troublesome weed in agricultural fields.

5 .........are major aerosol pollutant present in jet aircraft emission.

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