Which one of the following countries has its own Satellite Navigation System?
- A.Australia
- B.Canada
- C.Israel
- D.Japan
Correct answer
Explanation
The correct answer is D, Japan. Japan runs its own regional satellite navigation system, the Quasi-Zenith Satellite System (QZSS), also called Michibiki.
QZSS uses satellites in highly inclined, figure-of-eight geosynchronous orbits so that one of them is almost always nearly overhead in Japan, which improves positioning among tall buildings and mountains; it works alongside the American GPS. Only a few countries have their own systems: the United States (GPS), Russia (GLONASS), the European Union (Galileo) and China (BeiDou) run global systems, while India (NavIC, earlier IRNSS) and Japan (QZSS) run regional ones.
A is wrong because Australia uses other countries' systems and is building only an augmentation service to make GPS and Galileo more accurate. B is wrong because Canada has no navigation constellation of its own. C is wrong because Israel, though strong in space technology, has no satellite navigation system.
Exam tip: Global = GPS, GLONASS, Galileo, BeiDou; regional = NavIC (India), QZSS (Japan).
Practice Questions
View allWith reference to agriculture in India, how can the technique of 'genome sequencing', often seen in the news, be used in the immediate future ?
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below :
- A.1 only
- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
Show answer
Genome sequencing helps find useful genes, speeds up breeding and shows how pathogens attack crops. Genome sequencing reads the complete order of bases in an organism's DNA.
Read the full explanation →In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements :
1. The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions.
2. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses.
4. H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?
- A.1 only
- B.2 and 3 only
- C.4 only
- D.1, 2, 3 and 4
Show answer
H-CNG lowers carbon dioxide and hydrocarbon emissions, and hydrogen up to about a fifth by volume can be mixed into CNG for buses.
Read the full explanation →Consider the following statements :
Statement I : Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former produces more ethanol than the latter.
Statement II : Unlike in the United States of America where corn is the principal feedstock for ethanol production, sugarcane is the principal feedstock for ethanol production in Brazil.
Which one of the following is correct in respect of the above statements?
- A.Both Statement I and Statement II are correct and Statement II explains Statement I
- B.Both Statement I and Statement II are correct but Statement II does not explain Statement I
- C.Statement I is correct but Statement II is not correct
- D.Statement I is not correct but Statement II is correct
Show answer
The United States, not Brazil, is the world's largest ethanol producer, while the feedstocks named in Statement II are right.
Read the full explanation →Mission Shakti (DRDO) of India is related to which one among the following ?
- A.Launch of multiple satellites using a single rocket
- B.Launch of heavy satellites
- C.Use of high power rockets in launching of satellites
- D.Use of rocket to destroy an orbiting satellite
Show answer
Mission Shakti was India's first anti-satellite (ASAT) missile test. On 27 March 2019 DRDO fired a ground-launched interceptor from Dr. A.P.J.
Read the full explanation →Which one of the following is the best description of 'INS Astradharini', that was in the news recently?
- A.Amphibious warfare ship
- B.Nuclear-powered submarine
- C.Torpedo launch and recovery vessel
- D.Nuclear-powered aircraft carrier
Show answer
INS Astradharini is an Indian Navy ship built to launch torpedoes during trials and recover them afterwards. The vessel was commissioned at Visakhapatnam in 2015.
Read the full explanation →