The most effective electrolyte for the coagulation \(Fe_2O_3\cdot H_2O/Fe^{3+}\) is:
A. AgCl
B. FeCl3
C. \(MgCl _2\)
D. \(K_4[Fe(CN)_6]\)
E. KCl
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Which of the following statements about d-block elements is correct?

\(\mathrm{CuSO}_4\) is colorless but \(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\) is blue in color. Which of the following statements is incorrect about the color of \(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\)?

On doubling the initial concentration, the half life of a reaction becomes half. The order of the reaction is

White phosphorous shows chemiluminescence because it:

The characteristic oxidation state of Lanthanoids is +3, but Ce shows +4 oxidation state because…
(A) It has variable ionization enthalpy
(B) It has a tendency to attain noble gas configuration
(C) It has a tendency to attain \(f^0\) configuration
(D) It resembles \(\mathrm{Pb}^{4+}\)

Answer the question on basis of passage given below:
Organic compounds containing carbon -oxygen double bonds ( \(C = O\) ) are called carbonyl compounds. These are highly polar molecules. Hence, their boiling points are higher than hydrocarbons and ethers. Aldehydes can be prepared from dehydrogenation or oxidation of alcohols and by reduction of acylhalides. Ketones are prepared by oxidation of secondary alcohols or by hydration of alkynes etc.
Aldehydes and ketones undergo nucleophilic addition reaction with the number of nucleophiles such as HCN, NaHSO3 ammonia derivatives. Carboxylic acids are prepared by the oxidation of primary alcohols, aldehydes and alkenes, by hydrolysis of nitriles. Carboxylic acids are more acidic than alcohols and phenols.

A parallel combination of three resistors takes a current of 7.5 A from a 30 V battery.
If the resistances of two resistors are \( 12 \text{ } \Omega \) and \( 10 \text{ } \Omega \), then the resistance of the third resistor is:

The differential equation representing the curve \(y=e^{2 x}(a+b x)\), where \(a, b\) are arbitrary constants is

Match List - I with List - II

List - I	List - II
(A) Impurity defect	(I) NaCl with anionic sites called F centres
(B) Metal excess defect	(II) FeO with Fe3+
(C) Metal deficiency defect	(III) Non ionic solids and density of solid decreases
(D) Simple vacancy defect	(IV) NaCl with Sr2+ and cationic sites vacant

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Which of the following methyl halide will have the highest value of dipole moment?

Area of a rectangle having vertices A, B, C, D with position vectors \(-\hat{i} + \frac{1}{2}\hat{j} + 4\hat{k}, \hat{i} + \frac{1}{2}\hat{j} + 4\hat{k}, \hat{i} - \frac{1}{2}\hat{j} + 4\hat{k}\) and \(-\hat{i} - \frac{1}{2}\hat{j} + 4\hat{k}\) respectively is:

Identify the correct statements among the following.
(A) Electrical appliances in a household are always connected in series.
(B) Electrical appliances in a household are always connected in parallel.
(C) The potential difference across different electrical appliances in households is not equal.
(D) The potential difference across different electrical appliances in households is equal.
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