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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: Mg+O2=MgO Balance the above Chemical equation? 1757 0

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    2Mg + O2 ----> 2MgO
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  • 2
    2Mg + O ----> 2MgO
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  • 3
    2Mg + O ----> MgO2
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  • 4
    2Mg + O2 ----> MgO2
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उत्तर : 1. "2Mg + O2 ----> 2MgO"
व्याख्या :

Answer: A) 2Mg + O2 ----> 2MgO Explanation: Given Equation is  Mg + O2 → MgO Balancing the Chemical Equation is nothing but Conservation of Matter. As Matter is Neither created nor Destroyed, it must be conserved. Here we have 1 Mg and 2 O on the left side and 1 Mg and 1 O on the right side To balance that, add 1 Mg on the left side so that it becomes 2 Mg and 2 O on the left side i.e, 2 Mg + O2 → 2 MgO Here it has 2 Mg & 2 O on the left side and 2 Mg and 2 O on the right side and the Chemical equation is Balanced.

प्र: What Asks But Never Answers? 1679 0

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    Teacher
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    Telephone
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    Letter
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  • 4
    Owl
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उत्तर : 4. "Owl"
व्याख्या :

Answer: D) Owl Explanation: An owl. "What noise does an owl make? The sound an Owl makes, it sounds like, "Who?" to our ears. They sounds entire lives asking the same question, but they'll never give any answers.

प्र: 18 as a decimal? 1521 0

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    0.375
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    0.247
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    0.214
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    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: Find the Odd One Out? 3, 4, 14, 48, 576, 27648 1882 0

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    4
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    14
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    48
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  • 4
    27648
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उत्तर : 2. "14"
व्याख्या :

Answer: B) 14 Explanation: Given Number series is :   3   4   14   48   576   27648   It follows a pattern that,   3   4   4 x 3 = 12   but not 14   12 x 4 = 48   48 x 12 = 576   576 x 48 = 27648       Hence, the odd one in the given Number Series is 14.

प्र: Mirage is an example of 1849 0

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    Reflection of light & Refraction of light
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  • 2
    Dispersion of light
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    Total Internal Reflection
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  • 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 statement fits the Frontier Ethic? 2009 1

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    Recycle plastic
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    Help those in need
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  • 3
    He who has more toys wins
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    Walk lightly on Earth
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उत्तर : 3. "He who has more toys wins"
व्याख्या :

Answer: C) He who has more toys wins Explanation: Frontier Ethic is Spending Earth's assets at the cost of losing resource capital. A frontier ethic assumes that the earth has an unlimited supply of resources. It is the notion of disregarding the Earth for the benefit or gain of man. If resources run out in one area, more can be found elsewhere or alternatively human ingenuity will find substitutes. This attitude sees humans as masters who manage the planet. It is completely Anthropocentric.

प्र: Which Word Does Not Belong with the Others 5406 0

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    VDU
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    Speakers
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    Plotter
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  • 4
    Joystick
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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.

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