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नवीनतमलोकप्रियमूल्यांकनपेज देखें 48 of 416कुल सवाल 3327 जॉइन Examsbook

प्र: Two men A and B start from place X walking at 4 ½ kmph and 5 ¾ kmph respectively. How many km apart they are at the end of 3 ½ hours if they are walking in the same direction ? 3545 0

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    2 9/7 km
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    3 7/5 km
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    1 3/4 km
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  • 4
    4 3/8 km
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उत्तर : 4. "4 3/8 km"
व्याख्या :

Answer: D) 4 3/8 km Explanation: Relative Speed = 5 ¾ - 4 ½ = 1 ¼ Time = 3 ½ h. Distance = 5/4 x 7/2 = 35/8 = 4 3/8 km.

प्र: Ramu rides his bike at an average speed of 45 km/hr and reaches his desitination in four hours. Somu covers the same distance in six hours. If Ramu covered his journey at an average speed which was 9 km/hr less and Somu covered his journey at an average speed which was 10 km/hr more, then the difference in their times taken to reach the destination would be (in minutes). 3542 0

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    18 min
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    30 min
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    27 min
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    32 min
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उत्तर : 2. "30 min"
व्याख्या :

Answer: B) 30 min Explanation: Distance travelled by Ramu = 45 x 4 = 180 km Somu travelled the same distance in 6 hours. His speed = 180/6 = 30 km/hr Hence in the conditional case, Ramu's speed = 45 - 9 = 36 km/hr and Somu's speed = 30 + 10 = 40km/hr. Therefore travel time of Ramu and Somu would be 5 hours and 4.5 hours respectively. Hence difference in the time taken = 0.5 hours = 30 minutes.

प्र: माइक्रोप्रोसेसर उद्योग में कौन सी कंपनी सबसे बड़ी खिलाड़ी है? 3541 4

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    AMD
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    IBM
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    Motorola
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    Intel
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उत्तर : 4. "Intel"
व्याख्या :

Answer: D) Intel Explanation:

प्र: When is genetic drift a major factor in evolution? 3539 0

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    When there is male competition
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    When there is artificial selection
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    When there is no selective pressure
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    When there is disruptiveselection
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उत्तर : 3. "When there is no selective pressure"
व्याख्या :

Answer: C) When there is no selective pressure Explanation: Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.   When is genetic drift a major factor in evolution is * When there is low gene flow. * When there is no selective pressure. * When there is a bottleneck.

प्र: First Indian woman to participate in Olympics? 3539 0

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    Karnam Malleswari
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    Mary Kom
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    P.V. Sindhu
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    Geeta Phogat
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उत्तर : 1. "Karnam Malleswari"
व्याख्या :

Answer: A) Karnam Malleswari Explanation: The first Indian woman to ever win an Olympic medal was Karnam Malleswari who won a bronze medal at the Sydney Olympics in the Women's 69 kg category in Weightlifting.

प्र: At the university entrance exam, a candidate is admitted according to whether he has passed or failed the test. Of the candidates who are really capable, 80 % pass the test and of the incapable, 30 % pass the test. Given that 40 % of the candidates are really capable, then the proportion of the really capable students who can pass the test to the total students who can pass is about ? 3537 0

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    11/24
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    1/5
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    16/25
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    6/5
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उत्तर : 3. "16/25"
व्याख्या :

Answer: C) 16/25 Explanation: If there are total 100 candidates, 40 candidates are really capable and 60 candidates are incapable.Of the candidates who are really capable = 80% 40*(80/100)=32 pass the test andof the incapable= 30%60*(30/100)=18 pass the test.Total candidates who passed the test = 32+18 = 50The proportion of the really capable students who can pass the test to the total students who can pass = 32/50 = 16/25.

प्र: Smallest Taluk in Kerala State? 3533 0

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    Kunnathur
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    Eranad
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    Palakkad
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    Alappuzha
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उत्तर : 1. "Kunnathur"
व्याख्या :

Answer: A) Kunnathur Explanation: Kunnathur is the Smallest Taluk in Kerala State.   Taluk : In Kerala, the administrative divisions below the district are called Taluk. There are 77 Taluks in Kerala State. Eranad is the Largest Taluk in Kerala State. Palakkad is the Largest District in Kerala State. Alappuzha is the Smallest District in Kerala State.

प्र: Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.85. How much was lent at 5% ? 3530 0

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    Rs. 500
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    Rs. 245
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    Rs. 1250
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    Rs. 635
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उत्तर : 1. "Rs. 500"
व्याख्या :

Answer: A) Rs. 500 Explanation: (kx5x1)/100 + [(1500 - k)x6x1]/100 = 85 5k/100 + 90 – 6k/100 = 85 k/100 = 5 => k = 500

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