Cruciform corolla is a characteristics of which plant families?

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#Question id: 19644

#XL - P Chemistry

When acetylene is treated with HBr, the product is ———-

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#Question id: 3768

#XL - Q Biochemistry

After the first replication was observed in their experiments testing the nature of DNA replication, Meselson and Stahl could be confident of which of the following conclusions?

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#Question id: 19666

#XL - P Chemistry

The Lucas test was carried out on three different compounds: A, B, and C. Compounds A and B were turbid at ambient temperature, while compound C did not become turbid until it was heated. Which one of the compounds is tertiary in structure?

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#Question id: 19512

#XL - P Chemistry

In a group of the periodic table the Ionization enthalpies of the elements decreases from top to bottom because of ———-

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#Question id: 20200

#XL - P Chemistry

The energy of second Bohr orbit of the hydrogen atom is –328 kJ mol^–1, hence the energy of fourth Bohr orbit would be