IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Transition : Change :: Immobility :  ? 3510 0

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    Stillness
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  • 2
    Liveliness
    सही
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  • 3
    Action
    सही
    गलत
  • 4
    Busyness
    सही
    गलत
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उत्तर : 1. "Stillness"
व्याख्या :

Answer: A) Stillness Explanation: Given Transition is to Change, and we know that Transition and change are Synonyms. Similarly, Immobility means not moving and synonym of immobility are motionlessness, stillness,...   Hence, Transition is to change as immobility is to stillness.

प्र: A group of men can complete a job in K hours. After every 4 hours, half the number of men working at that point of time leave the job. Continuing this way if the job is finished in 16 hours, what is the value of K ? 3497 0

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    7 hrs
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  • 2
    7.5 hrs
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  • 3
    8 hrs
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  • 4
    8.25 hrs
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उत्तर : 2. "7.5 hrs"
व्याख्या :

Answer: B) 7.5 hrs Explanation: Let there are L men job requires LK man hours.   job completed in first 4 hrs = L x 4 = 4L job completed in next 4 hrs = 4 x L/2 = 2L job completed in next 4 hrs = 4 x L/4 = L job completed in last 4 hrs = 4 x L/8 = L/2 4L + 2L + L + L/2 = KL K = 7+1/2 = 7.5 hours.

प्र: Fresh grapes contain 60% water, while dry grapes contain 40% water. How many kgs of dry grapes can be obtained by 60 kg of fresh grapes? 3496 0

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    25 kgs
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  • 2
    30 kgs
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  • 3
    35 kgs
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  • 4
    40 kgs
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उत्तर : 4. "40 kgs"
व्याख्या :

Answer: D) 40 kgs Explanation: The fruit content in both the fresh fruit and dry fruit is the same. Let 'p' kgs of dry grapes are obtained from the 60 kgs of fresh grapes   => 60 x 40100 = p x 60100=> p = 40 kgs.   Therefore, 40 kgs of Dry grapes are obtained from 60 kgs of Fresh grapes.

प्र: In a row of boys, Haran is eleventh from the left and manoj is seventeenth form the right. When they exchange their places than Haran will be thirteenth from the left. Which of the following will be the new position of Manoj from the right ? 3491 0

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    11
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    19
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  • 3
    13
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  • 4
    17
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उत्तर : 2. "19"
व्याख्या :

Answer: B) 19 Explanation: Here total number of boys in the row = 11 + 19 = 13 + 17 = 30 Here after exchanging the places of Haran & Manoj  => Manoj replaces Harans place of 11th from left  But in the question he asked Manoj's place from right = 30 - 11 = 19th place.

प्र: The oldest type of energy known to man is _____? 3488 0

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    Geothermal Energy
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    Solar Power
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    Wind Power
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  • 4
    Tidal Power
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उत्तर : 1. "Geothermal Energy"
व्याख्या :

Answer: A) Geothermal Energy Explanation: Geothermal energy is heat energy generated and stored in the Earth. Geothermal energy has been used for thousands of years in some countries for cooking and heating. It is simply power derived from the Earth's internal heat.

प्र: Which is a green planet in the solar system? 3483 0

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    Pluto
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    Venus
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    Uranus
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  • 4
    Mars
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उत्तर : 3. "Uranus"
व्याख्या :

Answer: C) Uranus Explanation: Uranus is the seventh planet from the Sun which looks green color. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both have different bulk chemical composition from that of the larger gas giants Jupiter and Saturn.   Colors of other planets:: Mercury - Gray or slightly brownish Venus - Pale yellow Earth - Blue with white clouds Mars - Mostly reddish brown Jupiter - Orange and white bands Saturn - Pale gold Uranus - Green Neptune - Pale blue Pluto - Light brown

प्र: Find the number of factors of 9321 ? 3458 0

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    4
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  • 2
    5
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  • 3
    7
    सही
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  • 4
    8
    सही
    गलत
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उत्तर : 4. "8"
व्याख्या :

Answer: D) 8 Explanation: 9321 = 3 x 13 x 239 = 31 x 13 1 x 239 1 ; add one to all the powers ie., (1+1) x (1+1) x (1+1)= 8 ; we get eight factors.

प्र: Complete the missing number in the given series. 5,  20,  76,  (—),  448 3455 0

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    185
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  • 2
    225
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    गलत
  • 3
    415
    सही
    गलत
  • 4
    232
    सही
    गलत
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उत्तर : 2. "225"
व्याख्या :

Answer: B) 225 Explanation: The series follows the following pattern 5 X 5 – 5 = 20 20 X 4 – 4 = 76 76 X 3 – 3 = 225 225 X 2 – 2 = 448 Hence, the term 225 denoted by (d) completes the series

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