Practice Question and Answer

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 0

  • 1
    As global warming is not an issue of concern
    Correct
    Wrong
  • 2
    As the temperatures may rise almost by an additional one degree and this may lead to severe climate change
    Correct
    Wrong
  • 3
    As the NCAR has forced the European Union to announce the cuts.
    Correct
    Wrong
  • 4
    As all the nations have decided to cut emissions of carbon dioxide.
    Correct
    Wrong
  • 5
    None of these.
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "As the temperatures may rise almost by an additional one degree and this may lead to severe climate change"
Explanation :

undefined

Q:

At what time between 6 to7 O ' clock minute and hour hand will coincide? 

2448 0

  • 1
    $$ 6:38{2\over 11} $$
    Correct
    Wrong
  • 2
    $$ 6:43{7\over 11} $$
    Correct
    Wrong
  • 3
    $$ 6:32{8\over 11} $$
    Correct
    Wrong
  • 4
    $$ 6:5{5\over 11} $$
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. " $$ 6:32{8\over 11} $$"
Explanation :

undefined

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 0

  • 1
    A
    Correct
    Wrong
  • 2
    C
    Correct
    Wrong
  • 3
    B
    Correct
    Wrong
  • 4
    E
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "A"
Explanation :

undefined

Q:

Find the missing number.
25, 121, 361, 1369, ?

14432 0

  • 1
    3529
    Correct
    Wrong
  • 2
    1723
    Correct
    Wrong
  • 3
    3481
    Correct
    Wrong
  • 4
    4111
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "3481"
Explanation :

undefined

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 0

  • 1
    50000
    Correct
    Wrong
  • 2
    100000
    Correct
    Wrong
  • 3
    200000
    Correct
    Wrong
  • 4
    150000
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "50000"
Explanation :

undefined

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? 

1815 0

  • 1
    7%
    Correct
    Wrong
  • 2
    8%
    Correct
    Wrong
  • 3
    9%
    Correct
    Wrong
  • 4
    10%
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "8%"
Explanation :

undefined

  • Show AnswerHide Answer
  • Workspace

Answer : 3. "9"
Explanation :

undefined

Q:

Stubble burning results in emission of harmful gases such

2392 0

  • 1
    Carbon Monoxide
    Correct
    Wrong
  • 2
    Nitrogen dioxide
    Correct
    Wrong
  • 3
    Ozone
    Correct
    Wrong
  • 4
    Nitrous Monoxide
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "Nitrogen dioxide"
Explanation :

undefined

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully