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प्र: Which of the following is the lightest metal? 2403 0

उत्तर : 1. "Lithium"
व्याख्या :
Answer: A) Lithium Explanation: Lithium is the lightest metal and the lightest solid element. It is a soft, silvery-white alkali metal. Under standard conditions. Like all alkali metals, lithium is highly reactive and flammable and is stored in mineral oil.

प्र: During which process is water produced? 2401 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank? 2395 0

उत्तर : 2. "170 lit"
व्याख्या :
Answer: B) 170 lit Explanation: Given A alone can fill the tank of capacity 240 lit in 16 hrs. => A can fill in 1 hr = 240/16 = 15 lit => B alone can fill the tank of capacity 240 lit in 12 hrs. => B can fill in 1 hr = 240/12 = 20 lit Now, (A + B) in 1 hr = 15 + 20 = 35 lit But they are opened for 2 hrs => 2 x 35 = 70 lit rae filled Remaining water to be filled in tank of 240 lit = 240 - 70 = 170 lit.

प्र: 5 men and 4 women are to be seated in a row so that the women occupy the even places . How many such arrangements are possible? 2394 1

उत्तर : 1. "2880"
व्याख्या :
Answer: A) 2880 Explanation: There are total 9 places out of which 4 are even and rest 5 places are odd. 4 women can be arranged at 4 even places in 4! ways. and 5 men can be placed in remaining 5 places in 5! ways. Hence, the required number of permutations = 4! x 5! = 24 x 120 = 2880

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

प्र: A sold an article to B at 40% profit and B sold it to C at 50% profit, then what will be profit percent with respect to A ? 2392 0

प्र: Which of the following is the lightest metal? 2403 0

प्र: During which process is water produced? 2401 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank? 2395 0

प्र: 5 men and 4 women are to be seated in a row so that the women occupy the even places . How many such arrangements are possible? 2394 1

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

प्र: A sold an article to B at 40% profit and B sold it to C at 50% profit, then what will be profit percent with respect to A ? 2392 0

उत्तर : 2. "110 %"
व्याख्या :
Answer: B) 110 % Explanation: % Profit with respect to A = 40 + 50 + (40 x 50)/100 = 90 + 20 = 110 %.

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प्र: Which of the following is the lightest metal? 2403 05b5cc6a1e4d2b4197774cae5

प्र: During which process is water produced? 2401 05b5cc655e4d2b4197774bd5f

उत्तर : 2. "Electron transport chain" व्याख्या :Answer: B) Electron transport chain Explanation:

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 05b5cc6dee4d2b4197774ea60

उत्तर : 4. "5" व्याख्या :Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank? 2395 05b5cc6bbe4d2b4197774d802

प्र: 5 men and 4 women are to be seated in a row so that the women occupy the even places . How many such arrangements are possible? 2394 15b5cc7d1e4d2b4197775129f

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 05b5cc6bce4d2b4197774d8b1

उत्तर : 1. "4096" व्याख्या :Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 05b5cc6e5e4d2b4197774ed3d

उत्तर : 1. "14 days" व्याख्या :Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

प्र: A sold an article to B at 40% profit and B sold it to C at 50% profit, then what will be profit percent with respect to A ? 2392 05b5cc6e9e4d2b4197774ee3c

उत्तर : 2. "110 %" व्याख्या :Answer: B) 110 % Explanation: % Profit with respect to A = 40 + 50 + (40 x 50)/100 = 90 + 20 = 110 %.

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प्र: Which of the following is the lightest metal? 2403 0

प्र: During which process is water produced? 2401 0

उत्तर : 2. "Electron transport chain"
व्याख्या :
Answer: B) Electron transport chain Explanation:

प्र: The arithmetic mean of the following numbers 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7, 7, 7, 7, 7 is ? 2396 0

उत्तर : 4. "5"
व्याख्या :
Answer: D) 5 Explanation: Arithmatic mean = sum/members => (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7) => 140/28 = 5

प्र: Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank? 2395 0

प्र: 5 men and 4 women are to be seated in a row so that the women occupy the even places . How many such arrangements are possible? 2394 1

प्र: Find the next number in the given series 0.25, 8, 128, 1024, ? 2394 0

उत्तर : 1. "4096"
व्याख्या :
Answer: A) 4096 Explanation: Here given series follows a pattern that 0.25, 8, 128, 1024, ? 0.25 x 32 = 8 8 x 16 = 128 128 x 8 = 1024 1024 x 4 = 4096

प्र: A can do a piece of work in 21 days and B in 28 days. Together they started the work and B left after 4 days. In how many days can A alone do the remaining work ? 2393 0

उत्तर : 1. "14 days"
व्याख्या :
Answer: A) 14 days Explanation: Let A worked for x days. x/21 + 4/28 = 1 => x = 18 A worked for 18 days. So, A can complete the remaining work in 18 - 4 = 14 days.

प्र: A sold an article to B at 40% profit and B sold it to C at 50% profit, then what will be profit percent with respect to A ? 2392 0

उत्तर : 2. "110 %"
व्याख्या :
Answer: B) 110 % Explanation: % Profit with respect to A = 40 + 50 + (40 x 50)/100 = 90 + 20 = 110 %.