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The standard reduction potential values of three metallic cations, $X,Y,Z$ are $0.52,-3.03$ and $-1.18\text{V}$ respectively. The order of reducing power of the corresponding metals is:

The
E^θ(M²⁺/M)
value for copper is positive (+0.34V). What is possibly the reason
for this? (Hint: consider its high Δ_aH^θ
and low Δ_hydH^θ)

Explain: (i)
Zone refining (ii) Column chromatography.

For the reaction $H_2\left(g\right)+\frac{1}{2}{O}_2\left(g\right)\to H_{2}O\left(l\right),\Delta H=-285.8kJmo{l}^{-1}\Delta S=-0.163kJmo{l}^{-1}{K}^{-1}$. What is the value of free energy change ${27}^{\circ }C$ for the reaction.

1. 5

In a solid lattice the cation and anion both have left a lattice site. The lattice defect is known as.

Which of the following leads to bonding?

Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?

$C_6{H}_{12},C_6{H}_{14},C_6{H}_{10}$

Consider the following sequence of the reaction:$C_4{H}_6{O}_4\left(A\right)\stackrel{\Delta }{\to }{C}_3{H}_6{O}_2\left(B\right)\stackrel{Sodalime}{\to }{C}_2{H}_6$, then A & B respectively are

Select the appropriate option.

An analysis of Pyrex glass showed the presence of 12.9% of $B_2{O}_3$, 2.2% of $A{l}_2{O}_3$, 3.8% of $N{a}_{2}O$, 0.4% of $K_{2}O$ and the remaining was $Si{O}_2$. What is the ratio of silicon to boron atoms in the glass?

For the zero order reaction $A\to B+C$, initial concentration of 'A' is $0.1M$. If 'A' is $0.08M$ after 10 minutes, then the half-life and completion time for the reaction, are respectively:

In which of the following reaction(s) major product has aromatic behaviour?

Which one of the following will most readily be dehydrated in acidic condition ?

Which of the following is the correct order of $S_{N}2$ decreasing reactivity?

At $pH$ = 2, $E_{Quinhydrone}^{\circ }=1.30V$,

$E_{Quinhydrone}$ will be:

Which of the following is not a hard water?

The product expected along with primary amine, when phthalmide is treated with alc. $KOH$, alkyl halide and aq. $NaOH$ is :

Using MOT, compare $O_2^{+}$ and $O_2^{-}$ species and choose the incorrect option

Which of the following is an $\alpha$ - elimination reaction?

What happens when phenol is treated with ammonia in the presence of anhydrous ZnCl₂?