Satellites Used For Telecommunication Relay Are Kept In a Geostationary Orbit?
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: (2011) 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 […]
Scientists Can Determine The Arrangement or Relative Positions of Genes or DNA Sequences on a Chromosome. How does this knowledge benefit us?
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,(2011) […]
Which of the Statements Given Above is/are Correct? ( 2011 Science N tech)
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 wastewater treatment plants to cleanse water and produce electricity.(2011) Which of the statements given above is/are correct? a) 1 only b) 2 and 3 only c) 1 and 3 […]
The Function of Heavy Water in a Nuclear Reactor Is to
The function of heavy water in a nuclear reactor is to(2011) a) Slow down the speed of neutrons b) Increase the speed of neutrons c) Cool down the reactor d) Stop the nuclear reaction Answer: A The function of heavy water in a nuclear reactor is to Slow down the speed of neutrons. Heavy water […]
Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use?
Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use? 1. They are highly resistant to degradation in the environment. 2. They are able to accumulate in humans and animals. Select the correct answer using the code given below.(2014) a) 1 only b) 2 […]