IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Raghu earns 25% on an investment but loses 10% on another investment. If the ratio of the two investment is 3:5. What is the gain or loss on two investments taken together ? 1806 0

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    1.251 %
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  • 2
    3.125 %
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  • 3
    7.21 %
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    गलत
  • 4
    9.451 %
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    गलत
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उत्तर : 2. "3.125 %"
व्याख्या :

Answer: B) 3.125 % Explanation: Taking the 2 investments to be 3x and 5x respectivelyTotal income of Raghu = (3x) x 1.25 + (5x) x 0.9 = 8.25Therefore, Gain% = 0.25/8 x 100 = 3.125 %.

प्र: Which animal adaptation happened before the others? 1806 0

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    Reproduction on land
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  • 2
    Development of a colelom
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  • 3
    Tissue development
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  • 4
    Deuterostome development
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उत्तर : 3. "Tissue development"
व्याख्या :

Answer: C) Tissue development Explanation:

प्र: The Indian Judge who has been re-elected to International Court of Justice(ICJ) 2017? 1806 0

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    Dalveer Bhandari
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  • 2
    S.N. Rao
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  • 3
    Arjun Singh
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  • 4
    R. S. Pathak
    सही
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उत्तर : 1. "Dalveer Bhandari"
व्याख्या :

Answer: A) Dalveer Bhandari Explanation: India's nominee to International Court of Justice (ICJ) Dalveer Bhandari (70) was re-elected to fifth and the last seat of World court. Bhandari received 183-193 votes in United Nations General Assembly and secured all 15 votes in UN Security Council (UNSC). He was elected after Britain withdrew its candidate from the election. This is the first time since the ICJ was established in 1945 that there will be no British judge in ICJ. Bhandari is fourth Indian judge to be elected to ICJ after B.N. Rau, Nagendra Singh and RS Pathak.

प्र: In which layer is the temperature the lowest? 1805 0

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    Troposphere
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  • 2
    Ionosphere
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  • 3
    Mesosphere
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  • 4
    Stratosphere
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उत्तर : 3. "Mesosphere"
व्याख्या :

Answer: C) Mesosphere Explanation: The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.   Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.

प्र: The profit earned by selling an article for Rs. 832 is equal to the loss incurred when the same article is sold for Rs. 448. What should be the sale price for making 50% profit ? 1805 0

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    Rs. 660
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  • 2
    Rs. 560
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  • 3
    Rs. 1060
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    गलत
  • 4
    Rs. 960
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उत्तर : 4. "Rs. 960"
व्याख्या :

Answer: D) Rs. 960 Explanation: Let C.P. = Rs. C. Then, 832 - C = C - 4482C = 1280 => C = 640Required S.P. = 150% of Rs. 640 = 150/100 x 640 = Rs. 960.

प्र: If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ? 1805 0

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    56
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  • 2
    64
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    गलत
  • 3
    87
    सही
    गलत
  • 4
    78
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उत्तर : 4. "78"
व्याख्या :

Answer: D) 78 Explanation: Using Trial and error method, we get the number of girls in the hall = 78

प्र: Which of the following can be a symptom of AIDS? 1804 0

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    Hair loss
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  • 2
    Severe weight gain
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  • 3
    Tiredness
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  • 4
    All the above
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उत्तर : 3. "Tiredness"
व्याख्या :

Answer: C) Tiredness Explanation: From the aboe given options, only extreme and unexplained tiredness is the symptom of AIDS.   The other symptoms of AIDS include: recurring fever, thrush — a thick, whitish coating of the tongue or mouth that's caused by a yeast infection and sometimes accompanied by a sore throat, diarrhea that lasts more than a week, headaches, lightheadedness, and/or dizziness.

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उत्तर :
व्याख्या :

The Riddle itself has the Answers. What is a 4 letter word Yet is written in 3 letters Everything is written with 9 letters Then with 4 letters Rarely has 6 letters Never is written in 5 letters.

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