MCQ
An acidic buffer solution can be prepared by mixing the solution of
- ✓sodium acetate and acetic acid
- Bammonium chloride and ammonium hydroxide
- Csulphuric acid and sodium hydroxide
- Dsodium chloride and sodium hydroxide
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For the reaction $3 CaO +2 Al \rightarrow 3 Ca + Al _{2} O _{3}$ the standard reaction enthalpy $\Delta_{ r } H ^{0=}$ .......... $kJ$.
(Round off to the Nearest Integer).
$HC \equiv CH\,\xrightarrow[{H{g^{2 + }}}]{{{H_2}S{O_4}}}\,'P'$
Product $'P'$ will not give