A small amount of \(CaF_2\) is added in electrolytic reduction of \(Al_2O_3\) in fused cryolite :
A. To decrease the rate of oxidation of carbon at anode
B. To act as catalyst
C. To make fused mixture conducting
D. To lower the fusion temperature of melt
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Arrange the following in the increasing order of their solubility in n-octane on the basis of their solute-solvent interaction:
(A) KCI
(B) CH3OH
(C) CH3CN
(D) Cyclohexane
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Select the correct statements from the following:
(A) Mn show the highest oxidation state in first transition series elements
(B) Titanium (II) is more stable than titanium (III) and titanium (IV).
(C) Scandium does not exhibit variable oxidation states.
(D) Zn form complexes with only (II) oxidation state.
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Aniline reacts with bromine water at room temperature and forms a compound \(X\). Identify X.

Answer the question on the basis of passage given below:
Aldehydes are generally more reactive than ketones in nucleophilic addition reactions due to steric and electronic reasons. Sterically, the presence of two relatively large substituents in ketones hinders the approach of nucleophile to carbonyl carbon more than aldehydes having only one such substituent Electronically aldehydes are more reactive than ketones because two alkyl groups reduce the elctrophilicity of the carbonyl more effectively than in former.
Write the reaction sequence when phthalic acid reacts with ammonia.


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Following is a property of p-type semiconductor

If limiting molar conductance of \(NaCl , K _3 PO _4\) and KCl are \(110.2,98.8\) and \(134.6 \Omega^{-1} cm^2 mol^{-1}\) respectively, the limiting molar conductance of \(Na _3 PO _4\) will be: \(\left(\Omega^{-1} cm^2 mol^{-1}\right)\)

What is the mean of the numbers obtained on throwing a die having written \(1\) on three faces, \(2\) on two faces and \(5\) on \(1\) face?

The IUPAC name of the following compound is

The following data are from a simple random sample: 6, 8, 11, 9, 15, 17,
then the point estimate of the population mean is:

In a reaction :
\(MnO _4^{-}+8 H ^{+}+5 e^{-} \rightarrow \underline{ A }+ H _2 O\)
A stands for :

The strongest reducing agent amongst the following is :
(Given that \(€^{\circ}_{Ni^{2+}/Ni} = -0.25\text{ V}\), \(€^{\circ}_{Cu^{2+}/Cu} = 0.34\text{ V}\), \(€^{\circ}_{Pb^{2+}/Pb} = -0.13\text{ V}\), \(€^{\circ}_{Cr^{3+}/Cr} = -0.74\text{ V}\))

If we take \(8\) identical slips of paper and write the number \(0\) on one of them, the number \(1\) on three of the slips, the number \(2\) on three of the slips and the number \(3\) on one of the slips. These slips are folded, put in a box and roughly mixed. One slip is drawn at random from the box. If \(X\) is the random variable denoting the number written on the drawn slip, the variance of \(X\) is: