Which of the following gave the idea of a nucleus of the atom?

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#Question id: 7500

#General Aptitude

A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the length of the train and its speed.

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#Question id: 82

#XL - Q Biochemistry

The structures of D-ribose and D-arabinose are shown below. These two molecules are

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#Question id: 19646

#XL - P Chemistry

Bond length of (I) ethane, (II) ethene, (III) acetylene and (IV) benzene follows the order:

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#Question id: 11581

#XL - T Zoology

DES is called an "endocrine disrupting chemical" because it interferes with the endocrine secretions of the ________.

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#Question id: 545

#XL - R Botany

Which one of the following is not among the six internationally accepted classes of enzymes?