Day 452: JEE Mains Chemistry

1. A.
   $346.2\text{ }K$ and 300 J
2. B.
   378 K and 300 J
3. C.
   368 K and 500 J
4. D.
   378 K and 500 J

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1. A.
   A-II, B-III, C-IV, D-I
2. B.
   A-III, B-II, C-I, D-IV
3. C.
   A-IV, B-III, C-II, D-I
4. D.
   A-II, B-I, C-IV, D-III

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1. A.
   A-IV, B-I, C-III, D-II
2. B.
   A-I. B-IV, C-III, D-II
3. C.
   A-I. B-IV, C-II, D-III
4. D.
   A-IV, B-I, C-II. D-III

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1. A.
   reduction of $Mn$ from +4 to +3
2. B.
   oxidation of $Mn$ from +3 to +4
3. C.
   reduction of $Mn$ from +7 to +2
4. D.
   oxidation of $Mn$ from +2 to +7

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1. A.
   ${NO}_{3}^{-}$only
2. B.
   $K^{+}$only
3. C.
   ${Ag}^{+}$and $I^{-}$both
4. D.
   $I^{-}$ only

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