Day 72: MHT-CET Chemistry

1. A.
   $-85.00$ kJ
2. B.
   $-43.00$ kJ
3. C.
   $-128.00$ kJ
4. D.
   $-170.00$ kJ

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1. A.
   $\mathrm{BaCl_2}$
2. B.
   KCl
3. C.
   $\mathrm{BeCl_2}$
4. D.
   LiCl

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1. A.
   $+315$ kJ
2. B.
   $-315$ kJ
3. C.
   $-3.15$ kJ
4. D.
   $-630$ kJ

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1. A.
   $\mathrm{Na^+_{(l)} + e^- \rightarrow Na_{(l)}}$
2. B.
   $\mathrm{Na_{(s)} \rightarrow Na^+_{(l)} + e^-}$
3. C.
   $\mathrm{Cl_{2(g)} + 2e^- \rightarrow 2Cl^-_{(l)}}$
4. D.
   $\mathrm{2Cl^-_{(l)} \rightarrow Cl_{2(g)} + 2e^-}$

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1. A.
   The formation of pink or magenta color upon the addition of the reagent to the sample solution.
2. B.
   Formation of an Ag layer on sides of test tube upon addition and warming of the reagent.
3. C.
   Formation of brick-red precipitate upon heating with reagent.
4. D.
   Appearance of red color upon shaking with reagent.

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