GRE प्रश्न और उत्तर का अभ्यास करें

प्र: Anything that has Mass and takes up Space- 1629 0

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    System
    सही
    गलत
  • 2
    Matter
    सही
    गलत
  • 3
    Energy
    सही
    गलत
  • 4
    Weight
    सही
    गलत
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उत्तर : 2. "Matter"
व्याख्या :

Answer: B) Matter Explanation: Anything that has Mass and takes up Space is called Matter.   Matter has some mass and occupies some space. Mass means the amount of matter in an object. Space occupied by an object is called its Volume.   The Study of Matter and and how matter changes is called Chemistry.

प्र: FRIEND : FPIBNZ :: PATRON : ? 2498 0

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    PTYOPI
    सही
    गलत
  • 2
    PYTOPJ
    सही
    गलत
  • 3
    PYTOOJ
    सही
    गलत
  • 4
    PYTPOJ
    सही
    गलत
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उत्तर : 3. "PYTOOJ"
व्याख्या :

Answer: C) PYTOOJ Explanation: FRIEND : FPIBNZ Follows a pattern that, F - F R- second letter to left of R i.e, P I - I E - Third letter to left of E i.e, B N - N D - Fourth letter to left of D i.e, Z Similarly, for PATRON  P - P A -  second letter to left of A i.e, Y T - T R - Third letter to left of R i.e, O O - O N - Fourth letter to left of N i.e, J PATRON : PYTOOJ   Therefore, FRIEND : FPIBNZ :: PATRON : PYTOOJ

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उत्तर : 2. "J, L"
व्याख्या :

Answer: B) J, L Explanation: This question concerns a committee’s decision about which five of eight areas of expenditure to reduce. The question requires you to suppose that K and N are among the areas that are to be reduced, and then to determine which pair of areas could not also be among the five areas that are reduced. The fourth condition given in the passage on which this question is based requires that exactly two of K, N, and J are reduced. Since the question asks us to suppose that both K and N are reduced, we know that J must not be reduced: Reduced         ::      K, NNot reduced   ::      J The second condition requires that if L is reduced, neither N nor O is reduced. So L and N cannot both be reduced. Here, since N is reduced, we know that L cannot be. Thus, adding this to what we’ve determined so far, we know that J and L are a pair of areas that cannot both be reduced if both K and N are reduced: Reduced        ::      K, NNot reduced  ::      J, L Answer choice (B) is therefore the correct answer.

प्र: 18 as a decimal? 1515 0

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    0.375
    सही
    गलत
  • 2
    0.247
    सही
    गलत
  • 3
    0.214
    सही
    गलत
  • 4
    0.125
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उत्तर : 4. "0.125"
व्याख्या :

Answer: D) 0.125 Explanation: Here  18 in decimal means 8th part in 1. We know that 110 = 0.1 Then,   18 = ? => ? = 18 x 0.1110= 0.1 x 108= 0.5418= 0.125

प्र: Mirage is an example of 1839 0

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    Reflection of light & Refraction of light
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    गलत
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    Dispersion of light
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    गलत
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    Total Internal Reflection
    सही
    गलत
  • 4
    Refraction of light & Total Internal Reflection of light
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उत्तर : 4. "Refraction of light & Total Internal Reflection of light"
व्याख्या :

Answer: D) Refraction of light & Total Internal Reflection of light Explanation: A Mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky. It is caused due to Total internal Reflection. It is an optical illusion observed in deserts or hot summer days due to which a person sees a pond of water some distance ahead of him in which the surrounding objects appear inverted. How Mirage Forms:: 1. The temperature of other layers of atmosphere goes on decreasing as we go up.2. Therefore density and refractive index of air changes as one goes up.3. Thus a ray of light,gets refracted more and more away from the normal.4. At a particular angle when a ray of light exceeds critical angle, total internal reflection takes place and ray of light gets reflected in the same medium.5. when the reflected ray reaches our eye, it appears as coming from tree or sky .6. Hence the inverted image of tree creates an impression from a pond of water.

प्र: Which Word Does Not Belong with the Others 5392 0

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    VDU
    सही
    गलत
  • 2
    Speakers
    सही
    गलत
  • 3
    Plotter
    सही
    गलत
  • 4
    Joystick
    सही
    गलत
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उत्तर : 4. "Joystick"
व्याख्या :

Answer: D) Joystick Explanation: Here Joystick is the word doesn't belong with the others. Because Except Joystick all others are Output Devices whereas Joystick is Input Device. VDU - Visual Display Unit - Monitor to display Speakers - Output sound Plotter - used to produce single or multiple colored images.

प्र: The wavelength of a wave is the distance between 1270 0

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    Crest and Trough
    सही
    गलत
  • 2
    Crest and Crest
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    गलत
  • 3
    Trough and Trough
    सही
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  • 4
    Both B & C
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उत्तर : 4. "Both B & C"
व्याख्या :

Answer: D) Both B & C Explanation: Distance between two Consecutive Crests or two Consecutive Troughs is called Wavelength. But the distance between crest and adjacent trough is half the wavelength. That is the distance between adjacent crest and trough is called Half the wavelength.

प्र: The difference between simple interest and compound interest of a certain sum of money at 20% per annum for 2 years is Rs. 56. Then the sum is : 1654 0

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    Rs. 3680
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    गलत
  • 2
    Rs. 2650
    सही
    गलत
  • 3
    Rs. 1400
    सही
    गलत
  • 4
    Rs. 1170
    सही
    गलत
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उत्तर : 3. "Rs. 1400"
व्याख्या :

Answer: C) Rs. 1400 Explanation: We know thatThe Difference between Compound Interest and Simple Interest for n years at R rate of interest is given by C.In - S.In = PR100n Here n = 2 years, R = 20%, C.I - S.I = 56 56 = P201002=> P = 56 x 52=> P = 56 x 25=> P = Rs. 1400

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