Six bells commence tolling together and toll at intervals of 2,4,6,8,10,and 12 seconds respectively . In 30 minutes , how many times do they toll together ?

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#Question id: 12680

#General Aptitude

The perimeter of two squares are 40 cm and 24 cm. The perimeter of a third square , whose area is equal to the difference of the area of these squares, is

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#Question id: 15170

#Section 6: Plant, Animal and Microbial Biotechnology

Chemoheterotrophs are the bacteria which utilize

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#Question id: 3786

#Section 3: Genetics, Cellular and Molecular Biology

E. coli cells grown on 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?

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#Question id: 27167

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The image given below is related to

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#Question id: 346

#Section 2: General Biology

The partial negative charge in a molecule of water occurs because ________.