16 Years of Official UPSC Prelims PYQs. Verified Final Keys.

In the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this material? 1. Unlike traditional asphalt, bio-asphalt is not based on fossil fuels. 2. Bioasphalt can be made from non-renewable resources. 3. Bioasphalt can be made from organic waste materials. 4. It is eco-friendly to use bioasphalt for surfacing of the roads. Which of the statements given above are correct?

Consider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur. Which of the above is/are the emission/emissions from coal combustion at thermal power plants?

Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: 1. The orbit is geosynchronous. 2. The orbit is circular. 3. The orbit lies in the plane of the Earth's equator. 4. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below:

India has experienced persistent and high food inflation in the recent past. What could be the reasons? 1. Due to a gradual switchover to the cultivation of commercial crops, the area under the cultivation of food grains has steadily decreased in the last five years by about 30%. 2. As a consequence of increasing incomes, the consumption patterns of the people have undergone a significant change. 3. The food supply chain has structural constraints. Which of the statements given above are correct?

At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us? 1. It is possible to know the pedigree of livestock. 2. It is possible to understand the causes of all human diseases. 3. It is possible to develop disease-resistant animal breeds. Which of the statements given above is/are correct?

In terms of economy, the visit by foreign nationals to witness the XIX Common Wealth Games in India amounted to

Microbial fuel cells are considered a source of sustainable energy. Why? 1. They use living organisms as catalysts to generate electricity from certain substrates. 2. They use a variety of inorganic materials as substrates. 3. They can be installed in waste water treatment plants to cleanse water and produce electricity. Which of the statements given above is/are correct?

Which one of the following statements appropriately describes the "fiscal stimulus"?

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

Consider the following actions which the Government can take: 1. Devaluing the domestic currency. 2. Reduction in the export subsidy. 3. Adopting suitable policies which attract greater FDI and more funds from FIIs. Which of the above action/actions can help in reducing the current account deficit?

The Constitution (Seventy-Third Amendment) Act, 1992, which aims at promoting the Panchayati Raj Institutions in the country, provides for which of the following? 1. Constitution of District Planning Committees. 2. State Election Commissions to conduct all panchayat elections. 3. Establishment of State Finance Commissions. Select the correct answer using the codes given below:

Two important rivers --- one with its source in Jharkhand (and known by a different name in Odisha), and another with its source in Odisha - merge at a place only a short distance from the coast of Bay of Bengal before flowing into the sea. This is an important site of wildlife and biodiversity and a protected area. Which one of the following could be this?

A rapid increase in the rate of inflation is sometimes attributed to the "base effect". What is "base effect"?

India is regarded as a country with "Demographic Dividend". This is due to

Regarding "carbon credits", which one of the following statements is not correct?

Which one of the following is not a feature of "Value Added Tax"?

A "closed economy" is an economy in which

When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because

The "New START" treaty was in the news. What is this treaty?

Three of the following criteria have contributed to the recognition of Western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodiversity: 1. Species richness 2. Vegetation density 3. Endemism 4. Ethno-botanical importance 5. Threat perception 6. Adaptation of flora and fauna to warm and humid conditions. Which three of the above are correct criteria in this context?