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नवीनतमलोकप्रियमूल्यांकनपेज देखें 57 of 493कुल सवाल 3944 जॉइन Examsbook

प्र: What is the main component of biogas and natural gas? 3490 0

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    Carbon dioxide
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    Butane
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    Hydrogen Sulphide
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    Methane
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उत्तर : 4. "Methane"
व्याख्या :

Answer: D) Methane Explanation: Methane is the main component of biogas and natural gas.

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 ? 3488 0

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    11
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    19
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    13
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    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: 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 ? 3486 0

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    7 hrs
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    7.5 hrs
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    8 hrs
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    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? 3480 0

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    25 kgs
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    30 kgs
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    35 kgs
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    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: Which is a green planet in the solar system? 3475 0

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    Pluto
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    Venus
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    Uranus
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    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: A is the son of B, C. B's sister has a son D and a daughter E. F is the maternal uncle of D. How many nephews does F have? 3475 1

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    1
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    2
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    3
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    0
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उत्तर : 2. "2"

प्र: Five plays K, L, M, N and O are to be staged from Monday to Friday of a week. On each day, only one play will be staged. N or O should not be either the first or last to be staged. O should be immediately followed by M. L should be staged immediately after N. One play is staged between K and L. Which is the second play to be staged ? 3468 0

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    L
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    O
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    M
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    N
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उत्तर : 4. "N"
व्याख्या :

Answer: D) N Explanation: O should be immediately followed by M ie, the order OM should be followed. N should be immediately followed by L ie, the order NL should be followed. One play is staged between k and L and N or O should not be the first or last play. So, the order is Monday             K Tuesday            N Wednesday        L Thursday           O Friday               M

प्र: A women goes to market with Rs.500 to buy oranges.the prices of the oranges have decreased by 10% so he could buy 2kg more with the amount she had.What was the original price of the oranges ? 3467 0

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    22.77
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    25.77
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    27.77
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    29.77
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उत्तर : 3. "27.77"
व्याख्या :

Answer: C) 27.77 Explanation: If the price of the oranges decreases by 10%, the woman would save 10% of the money that is Rs.50 to buy the same amount as before.Now in Rs. 50 she can buy 2 kg more, therefore the current price of 1 kg of oranges is Rs25.Now, this current price is after 10% reduction.       Therefore, the original price =  25/0.9  = Rs. 27.77

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