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Question 1 of 5
1. Question
2 points
EI – Nino is a complex weather system that appears once every 3-7 years . In the Southern and Central
Pacific Ocean , it results in
1. Distortion of equatorial atmospheric circulation
2. Irregularities in the evaporation of sea water
3. Increase in the amount of diatoms in the ocean
Select the correct answer using the codes below :
Correct
Ans A
• Statements 1 and 2 : El – Nino is merely an extension of the warm equatorial current which gets
replaced temporarily by cold Peruvian current or Humboldt current ( locate these currents in your
atlas ) .
• The system involves oceanic and atmospheric phenomena with the a appearance of warm currents off
the coast of Peru in the Eastern Pacific and affects weather in many places including India .
• This current increases the temperature of water on the Peruvian coast by 10 ° C . This affects the local
temperature , and thus ocean currents , wind pattern leading to rainfall changes .
• It brings drought , floods and other weather extremes to different parts of the world .
• EI – Nino is used in India for forecasting long range monsoon rainfall .
• Statement 3 : It actually reduces the of phytoplankton and also amount diatoms because of the
increase in the sea temperature . Planktons need a more ambient climate to survive .
Incorrect
Ans A
• Statements 1 and 2 : El – Nino is merely an extension of the warm equatorial current which gets
replaced temporarily by cold Peruvian current or Humboldt current ( locate these currents in your
atlas ) .
• The system involves oceanic and atmospheric phenomena with the a appearance of warm currents off
the coast of Peru in the Eastern Pacific and affects weather in many places including India .
• This current increases the temperature of water on the Peruvian coast by 10 ° C . This affects the local
temperature , and thus ocean currents , wind pattern leading to rainfall changes .
• It brings drought , floods and other weather extremes to different parts of the world .
• EI – Nino is used in India for forecasting long range monsoon rainfall .
• Statement 3 : It actually reduces the of phytoplankton and also amount diatoms because of the
increase in the sea temperature . Planktons need a more ambient climate to survive .
Question 2 of 5
2. Question
2 points
Which of the following islands is divided into Brunei , Indonesia and Malaysia?
Correct
Ans B
Incorrect
Ans B
Question 3 of 5
3. Question
2 points
Earthquakes are most prone to occur in areas where
1. There are active volcanoes.
2. There are large reservoirs.
3. There are tectonic fault planes.
Choose the correct answer using the codes below :
Correct
Ans( d )
Justification :
• Option ( a ) : There are no such anti – cyclones that blow around Indus delta throughout the year.
• Option ( b ) : While the climate is arid , the region receives paltry 25 to 50 cm of rainfall in a normal
year . So , B is incorrect . However , this is a factor adding to the wasteland problem.
• Option ( c ) : Since the 1940s , the delta has received less water as a result of large – scale irrigation
works capturing large amounts of the Indus water before it reaches the delta. So , ( c ) is incorrect.
• The result has been catastrophic for both the environment and the local population .
• Option ( d ) : The lack of freshwater ( from both rainfall and rivers ) and high amount of brackish water
in the Indus region have led to the region turning into a wasteland.
• However , the delta is still home to the largest arid mangrove forests in the world , as well as many
birds , fish and the Indus Dolphin.
Incorrect
Ans( d )
Justification :
• Option ( a ) : There are no such anti – cyclones that blow around Indus delta throughout the year .
• Option ( b ) : While the climate is arid , the region receives paltry 25 to 50 cm of rainfall in a normal
year . So , B is incorrect . However , this is a factor adding to the wasteland problem .
• Option ( c ) : Since the 1940s , the delta has received less water as a result of large – scale irrigation
works capturing large amounts of the Indus water before it reaches the delta . So , ( c ) is incorrect .
• The result has been catastrophic for both the environment and the local population .
• Option ( d ) : The lack of freshwater ( from both rainfall and rivers ) and high amount of brackish water
in the Indus region have led to the region turning into a wasteland .
• However , the delta is still home to the largest arid mangrove forests in the world , as well as many
birds , fish and the Indus Dolphin .
Question 4 of 5
4. Question
2 points
What is/are common among algae, lichens, mosses, and ferns?
1. All are Non-green plants.
2. All are saprophytes.
3. All are cryptogams.
Select the correct statement/s from the codes given below:
Correct
Correct Answer: B
Explanation
Ans: (b) statement 1 and 2 are incorrect and 3 is correct.
●A cryptogam is a plant or a plant-like organism that reproduces by spores, without flowers or seeds. The best-known groups of cryptogams are algae, lichens, mosses, and ferns, but it also includes
non-photosynthetic organisms traditionally classified as plants, such as fungi, slime molds, and bacteria. Thus information 3 is correct.
●Algae are green undifferentiated plants ☘ possessing chlorophyll. Fungi is non-green plant. Algae is not a saprophyte. Thus information 1 and 2 are incorrect.
Incorrect
Correct Answer: B
Explanation
Ans: (b) statement 1 and 2 are incorrect and 3 is correct.
●A cryptogam is a plant or a plant-like organism that reproduces by spores, without flowers or seeds. The best-known groups of cryptogams are algae, lichens, mosses, and ferns, but it also includes
non-photosynthetic organisms traditionally classified as plants, such as fungi, slime molds, and bacteria. Thus information 3 is correct.
●Algae are green undifferentiated plants ☘ possessing chlorophyll. Fungi is non-green plant. Algae is not a saprophyte. Thus information 1 and 2 are incorrect.
Question 5 of 5
5. Question
2 points
Light travels faster in Vacuum than Glass because:
Correct
Correct Answer: C
Explanation
Ans: C
●Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive
index = 1.3) and 200,000 kilometers per second in glass (refractive index of 1.5).
● Frequency of light doesnot changes when it changes medium, only wavelength decreases in
glass, thus speed of light gets decreased.
Incorrect
Correct Answer: C
Explanation
Ans: C
●Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive
index = 1.3) and 200,000 kilometers per second in glass (refractive index of 1.5).
● Frequency of light does not changes when it changes medium, only wavelength decreases in
glass, thus speed of light gets decreased.
