Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such as orbit when: The orbit is geosynchronous. The orbit is circular. The orbit lies in the plane of the earth’s equator. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below:
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such as orbit when: The orbit is geosynchronous. The orbit is circular. The orbit lies in the plane of the earth’s equator. The orbit is at an altitude of 22,236 km. Select the correct answer using the […]
Consider the following: Carbon dioxide Oxides of Nitrogen Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at thermal power plants?
Consider the following: Carbon dioxide Oxides of Nitrogen Oxides of Sulphur Which of the above is/are the emission/emissions from coal combustion at thermal power plants? [UPSC Civil Services Exam – 2011 Prelims] (a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3 Answer: (d) Explanation: Carbon dioxide […]
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth [UPSC Civil Services Exam – 2011 Prelims] (a) does not exist at such distance (b) is neutralized by the attraction of the moon (c) provides the necessary speed for its steady motion (d) provides the necessary […]
The function of heavy water in a nuclear reactor is to
The function of heavy water in a nuclear reactor is to [UPSC Civil Services Exam – 2011 Prelims] (a) Slow down the speed of neutrons (b) Increase the speed of neutrons (c) Cool down the reactor (d) Both (a) and (c) Answer: (a) Explanation: Heavy Water – Heavy Water (D2O) or deuterium oxide is made […]
A genetically engineered form of brinjal, known as the Bt brinjal, has been developed. The objective of this is
A genetically engineered form of brinjal, known as the Bt brinjal, has been developed. The objective of this is [UPSC Civil Services Exam – 2011 Prelims] (a) To make it pest-resistant (b) To improve its taste and nutritive qualities (c) To make it drought-resistant (d) To make its shelf-life longer Answer: (a) Explanation: Bt Brinjal […]
Microbial fuel cells are considered a source of sustainable energy. Why? They use living organisms as catalysts to generate electricity from certain substrates. They use a variety of inorganic materials as substrates. They can be installed in waste water treatment plants to cleanse water and produce electricity. Which of the statement(s) given above is/are correct?
Microbial fuel cells are considered a source of sustainable energy. Why? They use living organisms as catalysts to generate electricity from certain substrates. They use a variety of inorganic materials as substrates. They can be installed in waste water treatment plants to cleanse water and produce electricity. Which of the statement(s) given above is/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? It is possible to know the pedigree of livestock It is possible to understand the causes of all human diseases. It is possible to develop disease resistant animal breeds. Which of the statement(s) given above is/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? It is possible to know the pedigree of livestock It is possible to understand the causes of all human diseases. It is possible to develop disease resistant animal breeds. Which of […]
Recently, “oilzapper” was in the news. What is it?
Recently, “oilzapper” was in the news. What is it? [UPSC Civil Services Exam – 2011 Prelims] (a) It is an eco-friendly technology for the remediation of oily sludge and oil spills (b) It is the latest technology developed for under-sea oil exploration (c) It is genetically engineered high biofuel-yielding maize variety (d) It is the […]
A new optical disc format known as the Blue-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? DVD supports Standard Definition video while BD supports High Definition video. Compare to a DVD, the BD format has several times more storage capacity. Thickness of BD is 2-4 mm while that of DVD is 1.2 mm. Which of the statement(s) given above is/are correct?
A new optical disc format known as the Blue-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? DVD supports Standard Definition video while BD supports High Definition video. Compare to a DVD, the BD format has several times more storage capacity. Thickness of BD is 2-4 mm while […]
What is “Virtual Private Network”?
What is “Virtual Private Network”? [UPSC Civil Services Exam – 2011 Prelims] (a) It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization (b) It is a computer network across a public internet that provides users access to their organization’s network while […]
