UPSC General Science MCQs – 09

The proteinous part of the enzyme is called

Which of the following is not true for aerobic respirations?

Consider the following kinds of organisms: [UPSC Civil Services, 2012]

1. Bat
2. Bee
3. Bird

Which of the above is/are pollinating agent/agents?

Consider the following kinds of organisms: [UPSC Civil Services, 2012]

1. Bacteria
2. Fungi
3. Flowering plants

Some species of which of the above kinds of organisms are employed as biopesticides?

Consider the following animals: [UPSC Civil Services, 2013]

1. Sea cow
2. Sea horse
3. Sea lion

Which of the above is/are mammal/mammals?

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to [UPSC Civil Services, 2013]
1. resist drought and increase absorptive area
2. tolerate extremes of pH
3. Resist disease infestation
Select the correct answer using the codes given below:

Consider the following statements: [UPSC Civil Services, 2012]

Chlorofluorocarbons, known as ozone depleting substances, are used.

1. In the production of plastic foams.
2. In the production of tubeless tyres.
3. In cleaning certain electronic components.
4. As pressurizing agents in aerosol cans.

Which of the statements given above is/are correct?

Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? [UPSC Civil Services, 2012]

1. Smelting units
2. Pens and Pencils
3. Paints
4. Hair oils and Cosmetics

Select the correct answer using the codes given below:

Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? [UPSC Civil Services, 2013]

1. Dispersion
2. Refraction
3. Internal reflection

Select the correct answer using the codes given below?

The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not correct? [UPSC Civil Services, 2013]