In the metallurgy of Al , purified \(Al _2 O _3\) is mixed with \(Na _3 AlF _6\) or \(CaF _2\). The role of \(Na _3 AlF _6\) or \(CaF _2\) is to:

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As aldehydes ketones possess the carbonyl functional group, they show similar reaction They exhibit nucleophilic addition reactions, reduction, oxidations, reactions due to alpha-Hydrogen atom, and many other reactions, like Cannizzaro reaction to electrophilic substitution reactions (in case of aromatic aldehydes ketones).
These reactions help in the preparation of a number of important compounds, like acetic acid, vinyl acetate, polymers and in perfume and dye industries.
Nucleophilic addition reactions form cyanohydrins, acetals, alcohols and
N-substituted derivatives like imine, oxime, semicarbazone, phenylhydrazone Schiff's base. Reactions due to alpha-hydrogen atoms help in formation of aldols and alpha, beta-unsaturated aldehydes ketones.
Identify the final product of the following reaction :

Which of following reagents will furnish ambident nucleophile?
(A) AgCN
(B) KCN
(C) AgNO2
(D) KNO2
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The magnetic moment of \(Cu ^{2+}\) ion \(( Z =29)\) is :

Which of the following is known as Freon-12:

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Strong oxidising agents oxidise toluene and its derivatives to benzoic acid. However, it is possible to stop the oxidation at the aldehyde stage with suitable reagents that convert the methyl group to an intermediate that is difficult to oxidise further.
Conversions that can be done by same reagent are:
(A) Benzaldehyde to 2-nitrobenzaldehyde
(B) Propan-1-ol to propanal
(C) Pent-3-en-2-ol to pent-3en-2-one
(D) Butanal to Butan-1-ol
(E) Methanal to Ethanol
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Identify 'X' along with oxidation state of halogen in the given reaction :
\(3\text{Cl}_2 + 6\text{NaOH} \rightarrow 5\text{NaCl}+\text{X} + 3\text{H}_2\text{O}\) (hot and conc.)

The conductivity of an ionic solution depends on:
A. The nature of the electrolyte added
B. The Volume of the container
C. The size of the ions and their solvation
D. Pressure
E. Concentration of the electrolytes
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Maxwell's displacement current is

Arrange the following oxides in decreasing order of oxidation state of the metal ion.
(A) Cu\(_2\)\(\mathrm{O}\)
(B) CrO\(_3\)
(C) Mn\(_2\)\(\mathrm{O}_7\)
(D) V\(_2\)\(\mathrm{O}_5\)
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A 100 W bulb working on 200 V and a 200 W bulb on 100 V, have their resistances in the ratio

The interval in which \(y=x^2 e^{-x}\) is strictly increasing is:

Which of the following is not correct about the order of a reaction?