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#Question id: 8908


According to one hypothesis, the jaws of vertebrates were derived by the modification of

#XL - T Zoology
  1. scales of the lower lip.
  2. skeletal rods that had supported pharyngeal (gill) slits.
  3. one or more gill slits.
  4. one or more of the bones of the cranium.

Answer:- Option(s): 2


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#Question id: 304

#XL - Q Biochemistry

As compared to covalent compounds electrovalent compounds generally possess ___________

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#Question id: 305

#XL - Q Biochemistry

Conditions for ionic bond formation is / are________

(A) Small cation, large anion

(B) Low IP of cation, high electron affinity of anion

(C) Large cation, small anion and less charge

(D) Less lattice energy

Correct answer is:

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#Question id: 306

#XL - Q Biochemistry

The force responsible for dissolution of ionic compound in water is_________

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#Question id: 307

#XL - Q Biochemistry

An ionic compound A+ B– is most likely to be formed when________

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#Question id: 308

#XL - Q Biochemistry

The vapor pressure of o-nitrophenol at any given temperature is predicted to be______

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#Question id: 309

#XL - Q Biochemistry

Predict the correct order among the following________

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