Find the value of \(\text{E}^{\circ}\) in the missing link in the following diagram.
\(Fe ^{3+} \xrightarrow{E_1^{\circ}=0.77 V} Fe ^{2+} \xrightarrow{E_2^{\circ}=-0.44 V} Fe\)
\(Fe ^{3+} \xrightarrow{E_3^{\circ}=?} Fe\)

Manganese ions on reaction with peroxydisulphate ions form :

Decreasing order of freezing point of 0.1 M aqueous solution of following will be :
(A) \(\text{K}_4\text{[Fe(CN)}_6\text{]}\)
(B) \(\text{K}_2\text{SO}_4\)
(C) \(\text{NH}_2\text{CONH}_2\)
(D) \(\text{AlCl}_3\)
(E) \(\text{HCl}\)
Choose the correct answer from the options given below :

At a certain temperature, the value of the slope of the plot of osmotic pressure (\(\pi\)) against concentration (\(\text{C}\) in mol \(\text{L}^{-1}\)) of a certain polymer solution is 291R.
The temperature at which osmotic pressure is measured is

Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, H 2 M and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Bond angle (HMH) among hydrides of group-16 decreases down the group because:

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.

The IUPAC name of the coordination compound \(\left[ CoCl _2( en )_2\right]^{+}\)is :

Which one of the given assisted reproductive technologies (ART) involves transfer of fertilized egg into the fallopian tube?

The frequency of a photon whose energy is 66.3 eV would be
(Given \( h = 6.63 \times 10^{-34} \text{ Js} \))

Read the passage carefully and answer the questions
Carbohydrates are naturally formed organic compounds from various plants. The common chemical formula, \(C _x\left( H _2 O \right)_y\), was considered as hydrates of carbon to derive the various carbohydrates. For instance, the general formula for glucose ( \(C _6 H _{12} O _6\) ) easily fits into the above formula. Carbohydrates also called saccharides are classified on the basis of their behavior towards hydrolysis. Monosaccharides cannot be hydrolyzed further to simpler units of polyhydroxy aldehyde or ketones. About 20 monosaccharides are known to occur in nature. Carbohydrates that yield large number of monosaccharide units are called polysaccharides. Amino acids contain ( \(- NH _2\) ) and ( - COOH ), which can be classified in various forms. Proteins are polymers of alpha amino acids which are connected to each other by a peptide bond or peptide linkage. When a native protein is subjected to physical change, its globules unfold and helix get uncoiled and the protein loses its biological activity. The protein is said to be denaturated.
Sucrose on hydrolysis gives

In a Young's double-slit experiment, two slits are 1.5 mm apart while the screen is 1.2 m away. When a light of wavelength 600 nm is incident on slits, the fringe width will be

The value of the integral \(I=\int_{-1}^1|x| d x\) is:

Which among the following is not a primary consumer?