Two trains of length 250 m and 140 m are running on parallel lines in the same direction at 58 km/h and 32 km/h respectively. Find the time taken by the slower train to pass the driver of the faster one.

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#Question id: 29084

#Unit 10. Ecological Principles

Which of the following gases has the major contribution to global warming?

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#Question id: 16137

#Unit 13. Methods in Biology

You obtain 6 BACs (of known order, as shown below) and 7 STSs (of unknown order) that derive from a region of mouse chromosome 16 whose genomic sequence has not yet been finished.   

 

By PCR (using 20-bp primers at either end of each STS), you test each of the 6 BACs for the presence (+) or absence (-) of each of the 7 STSs. You obtain the following results:

 

How would you use the sequence information presented in to design two new STSs (with new PCR primer pairs) to replace STS5? (Call the new ones STS51 and STS52. STS51 should be present (+) in BAC B, and STS52 should be present (+) in BAC F.)

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#Question id: 11760

#Unit 9. Diversity of Life Forms

Which of the following produce the dense glassy ooze found in certain areas of the deep-ocean floor?

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#Question id: 5402

#General Aptitude

a, b, c, d and e are five consecutive numbers divisible by 3 whose average is 33. What is the value of (a×d)?

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#Question id: 23199

#Unit 13. Methods in Biology

Metal shadowing- thin film of platinum is coated from a _________ which provides information about the three-dimensional topology of the sample.