UPSC Government Jobs Exams

Consider the following:
1. Oxides of Hydrogen
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above causes/cause acid rain? [UPSC 2010 (CS-P)]

1 and 2 only
3 only
2 and 3 only
1, 2 and 3

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UPSC Other Question

What are the possible limitations of India in mitigating the global warming at present and in the immediate future? [UPSC 2010 (CS-P)]
1. Appropriate alternate technologies are not sufficiently available.
2. India can not invest huge funds in research and development.
3. Many developed countries have already set up their polluting industries in India.
Which of the statements given above is/are correct?

1 and 2 only
2 only
1 and 3 only
1, 2 and 3 With regard to the transmission of the Human Immunodeficiency Virus, which one of the following statements is not correct? [UPSC 2010 (CS-P)]

The chances of transmission from female to male are twice as likely as from male to female.
The chances of transmission are more if a person suffers from other sexually transmitted infections.
An infected mother can transmit the pregnancy, at childbirth and by breast feeding.
The risk of contracting infection from transfusion of infected blood is much higher than an exposure to contaminated needle.