NEET Chemistry

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Q1) Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

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Q2) Lithium has a bcc structure. Its density is 530 kg m-3 and its atomic mass is 6.94g mol-1. Calculate the edge length of a unit cell of Lithium metal. (NA = 6.02 × 1023 mol-1)

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Q3) Which of the following is an analgesic?

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Q4) Consider the nitration of benezene using mixed conc. H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be:

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Q5) Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

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Q6) The two polypeptides of human insulin are linked together by:

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Q7. The pressure of H2 required making the potential of H2 –electrode zero in pure water at 298 K is:

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Q8) The addition of a catalyst during a chemical reaction alters which of the following quantities?

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Q9) The ionic radii of A+ and B- ions are 0.98 × 10-10 m and 1.81 × 10-10 m. The coordination number of each ion in AB is:

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Q10. Which is the correct statement for the given acids?

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NEET Chemistry
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