A train travelling at 36km/h crosses a pole in 25 second. How much time (in second) will it take to cross a bridge 350m long?

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A) 72 B) 48 C) 60 D) 56 Detailed solution : {The above question had appeared in the CGL Mains 2020 } Let the length of train = x 36×5/18 = x/25 x= 250 36×5/18 = 350+250/time (t) time(t) = 60 second ANSWER : c) 60 OTHER GOVT JOBS NOTIFICATION: CLICK HERE DAILY MCQ FOR GOVT JOBS PREPARATION: CLICK … Read more

Two positive numbers difference by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater number is

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A) 1558 B) 1458 C) 1585 D) 1485 Detailed solution : {The above question had appeared in the CGL Mains 2020 } Let the greatest number = x Let the smallest number = y x = 7y + 50 x – 7y = 50 x-y = 1280 By solving the above equations, we get -6y … Read more

The incomes of two persons P and Q are in the ratio 5 ∶ 6. If each of them saves Rs.200 per month, the ratio of their expenditures is 3 ∶ 4. Find the income of Q.

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A) 750 B) 800 C) 600 D) 740 Detailed solution Let two persons be P and Q 5. :. 6. Income of two person 3. :. 4 expenditure For Q If income is 6 and expenditure is 4 remaining will be his saving which is 2 But in question they are given it as 200 … Read more

2 g of benzoic acid C6H5COOH dissolved in 25 g of benzene shows a depression in freezing point equal to 1.62 K. Molal depression constant for benzene is 4.9 K kg mol−1. What is the percentage association of acid if it forms dimer in solution?

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WB​=2g, Kf​=4.9K Kgmol−1 WA​=25g, ΔTf​=1.62K now  If x is the degree of association, (1−x) mole of benzoic acid left undissociated & corresponding x/2 as associated moles of C6​H5​COOH at equilibrium. i = Normal molecular mass / Abnormal molecular mass 1-x/2 = 122/241.98 x=0.992 = 99.2%

Oil India Recruitment 2023 Notification for 187 Workperson Posts Apply now

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Oil India Recruitment 2023 Notification for 187 Workperson Posts Apply now: Inviting online applications from eligible and interested candidates for 187 posts. Candidates can get all details related to CENTRAL GOVT JOBS  2023 Application here. Aspirants who are looking for LATEST JOB VACANCIES 2023 can read below for more details and apply soon!! Oil India Recruitment 2023 Notification ORGANIZATION NAME … Read more

The sum of three numbers is 280. If the ratio between the first and second number is 2:3 and the ratio between second and third number is 4:5, then find the second number.

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let three numbers be X Y Z sum of three numbers as per question X+Y+Z = 280 X Y Z 2 : 3 : 3 4 : 4 : 5 8 : 12 : 15 sum of three numbers as per question 8+12+15 = 35 MEANS 35 represents 280 1 represents 280/35= 8 in question … Read more