Practice Question and Answer
8 Q:Directions: Read the following passage carefully and answer the questions given below it. Certain words/phrases have been printed in bold to help you locate them while answering some of the questions.
A new analysis has determined that the threat of global warming can still be greatly diminished if nations cut emissions of heat-trapping greenhouse gases by 70% this century. The analysis was done by scientists at the National Center for Atmospheric Research (NCAR). While global temperatures would rise, the most dangerous potential aspects of climate change, including massive losses of Arctic sea ice and permafrost and significant sea-level rise, could be partially avoided.
“This research indicates that we can no longer avoid significant warming during this century,” said NCAR scientist Warren Washington, the study paper's lead author. “But, if the world were to implement this level of emission cuts, we could stabilize the threat of climate change", he added.
Average global temperatures have warmed by close to 1 degree Celsius since the pre-industrial era. Much of the warming is due to human-produced emissions of greenhouse gases, predominantly carbon dioxide. This heat-trapping gas has increased from a pre-industrial level of about 284 parts per million ( ppm ) in the atmosphere to more than 380 ppm today. With research showing that additional warming of about 1 degree C may be the threshold for dangerous – climate change, the European Union has called for dramatic cuts in emissions of carbon dioxide and other greenhouse gases.
To examine the impact of such cuts on the world's climate, Washing ton and his colleagues ran a series of global studies with the NCAR - based Community Climate System Model (CCSM). They assumed that carbon dioxide levels could be held to 450 ppm at the end of this century. In contrast, emissions are now on track to reach about 750 ppm by 2100 if unchecked. The team's results showed that if carbon dioxide were held to 450 ppm, global temperatures would increase by 0.6 degrees Celsius above current readings by the end of the century. In contrast, the study showed that temperatures would rise by almost four times that amount to 2.2 degrees Celsius above current readings if emissions were allowed to continue on their present course. Holding carbon dioxide levels to 450 ppm would have other impacts, according to the climate modeling study.
Sea-level rise due to thermal expansion as water temperatures warmed would be 14 centimeters about (5.5 inches) instead of 22 centimeters (8.7 inches). Also, Arctic ice in the summertime would shrink by about a quarter in volume and stabilize by 2100, as opposed to shrinking at least three quarters and continuing to melt, and Arctic warming would be reduced by almost half.
Why has the European Union called for dramatic cuts in carbon dioxide and greenhouse gas emissions?
2341 05d9dc1ece215617fef761455
5d9dc1ece215617fef761455A new analysis has determined that the threat of global warming can still be greatly diminished if nations cut emissions of heat-trapping greenhouse gases by 70% this century. The analysis was done by scientists at the National Center for Atmospheric Research (NCAR). While global temperatures would rise, the most dangerous potential aspects of climate change, including massive losses of Arctic sea ice and permafrost and significant sea-level rise, could be partially avoided.
“This research indicates that we can no longer avoid significant warming during this century,” said NCAR scientist Warren Washington, the study paper's lead author. “But, if the world were to implement this level of emission cuts, we could stabilize the threat of climate change", he added.
Average global temperatures have warmed by close to 1 degree Celsius since the pre-industrial era. Much of the warming is due to human-produced emissions of greenhouse gases, predominantly carbon dioxide. This heat-trapping gas has increased from a pre-industrial level of about 284 parts per million ( ppm ) in the atmosphere to more than 380 ppm today. With research showing that additional warming of about 1 degree C may be the threshold for dangerous – climate change, the European Union has called for dramatic cuts in emissions of carbon dioxide and other greenhouse gases.
To examine the impact of such cuts on the world's climate, Washing ton and his colleagues ran a series of global studies with the NCAR - based Community Climate System Model (CCSM). They assumed that carbon dioxide levels could be held to 450 ppm at the end of this century. In contrast, emissions are now on track to reach about 750 ppm by 2100 if unchecked. The team's results showed that if carbon dioxide were held to 450 ppm, global temperatures would increase by 0.6 degrees Celsius above current readings by the end of the century. In contrast, the study showed that temperatures would rise by almost four times that amount to 2.2 degrees Celsius above current readings if emissions were allowed to continue on their present course. Holding carbon dioxide levels to 450 ppm would have other impacts, according to the climate modeling study.
Sea-level rise due to thermal expansion as water temperatures warmed would be 14 centimeters about (5.5 inches) instead of 22 centimeters (8.7 inches). Also, Arctic ice in the summertime would shrink by about a quarter in volume and stabilize by 2100, as opposed to shrinking at least three quarters and continuing to melt, and Arctic warming would be reduced by almost half.
- 1As global warming is not an issue of concernfalse
- 2As the temperatures may rise almost by an additional one degree and this may lead to severe climate changetrue
- 3As the NCAR has forced the European Union to announce the cuts.false
- 4As all the nations have decided to cut emissions of carbon dioxide.false
- 5None of these.false
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- Workspace
- SingleChoice
Answer : 2. "As the temperatures may rise almost by an additional one degree and this may lead to severe climate change"
Explanation :
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Q: At what time between 6 to7 O ' clock minute and hour hand will coincide?
2448 05d9dc07582ff737fd6a84f3c
5d9dc07582ff737fd6a84f3c- 1$$ 6:38{2\over 11} $$false
- 2$$ 6:43{7\over 11} $$false
- 3$$ 6:32{8\over 11} $$true
- 4$$ 6:5{5\over 11} $$false
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Answer : 3. " $$ 6:32{8\over 11} $$"
Explanation :
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Q:Six friends A, B, C, D and F seating in a circle facing towards the center. E is the left of D. C seats between A and B and F is between E and A.
Who is seating immediate right of c ?
1786 05d9dbea582ff737fd6a84b18
5d9dbea582ff737fd6a84b18- 1Atrue
- 2Cfalse
- 3Bfalse
- 4Efalse
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- SingleChoice
Answer : 1. "A"
Explanation :
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Q: Find the missing number.
25, 121, 361, 1369, ?
14432 05d9db0a983cbd37fec650427
5d9db0a983cbd37fec65042725, 121, 361, 1369, ?
- 13529false
- 21723false
- 33481true
- 44111false
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Answer : 3. "3481"
Explanation :
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Q: The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 9 % per anmum is Rs . 405 The sum is
2918 05d9dacf15863b37fdc696104
5d9dacf15863b37fdc696104- 150000true
- 2100000false
- 3200000false
- 4150000false
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Answer : 1. "50000"
Explanation :
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Q: The simple interest on a certain sum of money at the rate of 5 % per annum for 8 years is ₹ 840. Rate of interest for which the same amount of interest can be received on the same sum after 5 years is?
1814 05d9dac3ae215617fef75f6d1
5d9dac3ae215617fef75f6d1- 17%false
- 28%true
- 39%false
- 410%false
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Answer : 2. "8%"
Explanation :
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Q: A number consists of two digits and the digit in the ten's place exceeds that in the unit's place by 5. If 5 times the sum of the digits be subtracted from the number, the digits of the number are reversed. Then the sum of the digits of the number is:
1477 05d9da9cd5863b37fdc695e68
5d9da9cd5863b37fdc695e68- 111false
- 27false
- 39true
- 413false
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Answer : 3. "9"
Explanation :
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Q: Stubble burning results in emission of harmful gases such
2392 05d9d9573079a324c7a2369c5
5d9d9573079a324c7a2369c5- 1Carbon Monoxidefalse
- 2Nitrogen dioxidetrue
- 3Ozonefalse
- 4Nitrous Monoxidefalse
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Answer : 2. "Nitrogen dioxide"
Explanation :
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