1. Which one is an acidic buffer solution?
30 mL 0.1MHCl+20 mL 0.1M 30 \mathrm{~mL} ~0.1 \mathrm{M} \mathrm{HCl}+20 \mathrm{~mL}~ 0.1 \mathrm{M} 30 mL 0.1MHCl+20 mL 0.1M NaOH \mathrm{NaOH} NaOH
30 mL 0.1MCH3COOH+30 mL 0.1M 30 \mathrm{~mL}~ 0.1 \mathrm{M} \mathrm{C} \mathrm{H}_{3} \mathrm{COOH}+30 \mathrm{~mL}~ 0.1 \mathrm{M} 30 mL 0.1MCH3COOH+30 mL 0.1M NaOH \mathrm{NaOH} NaOH
30 mL 0.1MCHCOOOH3+20 mL 0.1M 30 \mathrm{~mL}~ 0.1 \mathrm{M} \mathrm{CH} \mathrm{COOOH}_{3}+20 \mathrm{~mL}~ 0.1 \mathrm{M} 30 mL 0.1MCHCOOOH3+20 mL 0.1M NaOH \mathrm{NaOH} NaOH
30 mL 0.1MCHH3COOH+15 mL 0.2M 30 \mathrm{~mL}~ 0.1 \mathrm{M} \mathrm{CH} \mathrm{H}_{3} \mathrm{COOH}+15 \mathrm{~mL}~ 0.2 \mathrm{M} 30 mL 0.1MCHH3COOH+15 mL 0.2M NaOH \mathrm{NaOH} NaOH
2. 2AB2( g)+C2( g)⇌2AC(g)+2 B2( g);ΔH=−X KJmol−1 \begin{array}{l}2 \mathrm{AB}_{2}(\mathrm{~g})+\mathrm{C}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{AC}(\mathrm{g})+ 2 \mathrm{~B}_{2}(\mathrm{~g}) ; \Delta \mathrm{H}=-\mathrm{X} \mathrm{~KJmol}^{-1}\end{array} 2AB2( g)+C2( g)⇌2AC(g)+2 B2( g);ΔH=−X KJmol−1
In this reaction-
i. product will decrease with the increase
ii. product will decrease with the increase of temperature.
iii. reaction is dynamic in both sides.
Which one is correct?
i and ii
i and iii
ii and iii
i, ii and iii
3. Which one is 'not' an antioxidant?
BHT
TBHQ
BHA
EDTA
4. In which case Bohr's atomic model is applicable?
H+ \mathrm{H}^{+} H+
He2+ \mathrm{He}^{2+} He2+
Li3+ \mathrm{Li}^{3+} Li3+
He+ \mathrm{He}^{+} He+
5. Which relation is correct?
KC=KP(RT)Δn \mathrm{K}_{\mathrm{C}}=\mathrm{K}_{\mathrm{P}}(\mathrm{RT})^{\Delta \mathrm{n}} KC=KP(RT)Δn
KP=Kc(RT)Δn K_{P}=K_{c}(R T)^{\Delta n} KP=Kc(RT)Δn
KC=(RT)ΔnKp \mathrm{K}_{\mathrm{C}}=\frac{(\mathrm{RT})^{\Delta \mathrm{n}}}{\mathrm{K}^{\mathrm{p}}} KC=Kp(RT)Δn
KP=KC(RT)Δn K_{P}=\frac{K_{C}}{(R T)^{\Delta n}} KP=(RT)ΔnKC