GRE Practice Question and Answer
8Q: The outermost layer of the sun is called 2377 05b5cc6a5e4d2b4197774cd04
5b5cc6a5e4d2b4197774cd04- 1Coronatrue
- 2Chromospherefalse
- 3Radiative Zonefalse
- 4Transition Regionfalse
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Answer : 1. "Corona"
Explanation :
Answer: A) Corona Explanation: The outermost layer of the sun is called The Corona. The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.
Q: In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many sisters as he has brothers. How many sons are there in the family ? 2370 05b5cc723e4d2b4197774f6be
5b5cc723e4d2b4197774f6be- 11false
- 22false
- 33true
- 44false
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Answer : 3. "3"
Explanation :
Answer: C) 3 Explanation: Assume the family has X girls and Y boys, according to the question,we can have 2 equations:X-1=Y, 2(Y-2)=X.Solve the equations, we get X=4, Y=3.
Q: Car is to garage as aeroplane is to 2366 05b5cc65ee4d2b4197774be20
5b5cc65ee4d2b4197774be20- 1Hangartrue
- 2Portfalse
- 3Harbourfalse
- 4Depotfalse
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Answer : 1. "Hangar"
Explanation :
Answer: A) Hangar Explanation: We park car temporarily in garrage, similarly, aeroplane is temporarily parked in hangar.
Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2362 05b5cc75ce4d2b4197774fc48
5b5cc75ce4d2b4197774fc48- 124%false
- 229%false
- 334%false
- 425%true
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Answer : 4. "25%"
Explanation :
Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.
Q: I can Honk without using a Horn. Who am I? 2358 05b5cc6abe4d2b4197774cf9e
5b5cc6abe4d2b4197774cf9e- 1Goosetrue
- 2Cranefalse
- 3Penguinfalse
- 4Hummingfalse
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Answer : 1. "Goose"
Explanation :
Answer: A) Goose Explanation: Goose can Honk without using a Horn. Geese are waterfowl of the family Anatidae.
Q: Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ? 2352 05b5cc73ae4d2b4197774f8f1
5b5cc73ae4d2b4197774f8f1- 1Thursdaytrue
- 2Fridayfalse
- 3Tuesdayfalse
- 4Mondayfalse
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Answer : 1. "Thursday"
Explanation :
Answer: A) Thursday Explanation: Given monday population = 3000Per day 20% increase in population. Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600 Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320 Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184 So that day is Thursday.
Q: Microphone : Loud :: Microscope : ? 2343 05b5cc658e4d2b4197774bde8
5b5cc658e4d2b4197774bde8- 1Investigatefalse
- 2Magnifytrue
- 3Examinefalse
- 4Elongatefalse
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Answer : 2. "Magnify"
Explanation :
Answer: B) Magnify Explanation: As Microphone makes sound louder similarly Microscope makes the object magnified. Hence, Microphone : Loud :: Microscope : Magnify.
Q: What is the product of a number and its reciprocal? 2338 05b5cc670e4d2b4197774c002
5b5cc670e4d2b4197774c002- 10false
- 21true
- 3-ve of the numberfalse
- 4the number itselffalse
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Answer : 2. "1"
Explanation :
Answer: B) 1 Explanation: The product of a number and its reciprocal is always equals to 1. For Example : Let the number be 4. Now, its reciprocal is 1/4 Hence, required product = 4 x 1/4 = 1. Now, take the number as -15. Then its reciprocal is -1/15 Required product = -15 x -1/15 = 1. Hence, the product of a number and its reciprocal is 1.