Which of the following statements is not true about glucose?
An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels because __________
Assertion (A): [Cr(H_2O)_6]Cl_2 and [Fe(H_2O)_6]Cl_2 are examples of homoleptic complexes. Reason (R): All the ligands attached to the metal are the same.
Assertion (A): The boiling points of alkyl halides decrease in the order: RI>RBr>RCl>RF. Reason (R): The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.
Assertion (A): The boiling point of ethanol is higher than that of methoxymethane. Reason (R): There is intramolecular hydrogen bonding in ethanol.
Assertion (A): All naturally occurring \(\alpha\)-amino acids except glycine are optically active. Reason (R): Most naturally occurring amino acids have L-configuration.
Give reasons: (a) Cooking is faster in a pressure cooker than in an open pan. (b) On mixing liquid X and liquid Y, volume of the resulting solution decreases. What type of deviation from Raoult's law is shown by the resulting solution? © What change in temperature would you observe after mixing liquids X and Y?
Define Azeotrope. What type of Azeotrope is formed by negative deviation from Raoult's law? Give an example.
Complete and balance the following chemical equations: (a) \[ 2MnO_4^-(aq) + 10I^-(aq) + 16H^+(aq) \rightarrow \] (b) \[ Cr_2O_7^{2-}(aq) + 6Fe^{2+}(aq) + 14H^+(aq) \rightarrow \]
Would you expect benzaldehyde to be more reactive or less reactive in nucleophilic addition reactions than propanal? Justify your answer.
Identify A and B in each of the following reaction sequence: (a) \[ CH_3CH_2Cl \xrightarrow{NaCN} A \xrightarrow{H_2/Ni} B \]
(b) \[ C_6H_5NH_2 \xrightarrow{NaNO_2/HCl} A \xrightarrow{C_6H_5NH_2} B \]
Write the reactions involved when D-glucose is treated with the following reagents: (a) HCN (b) Br\(_2\) water
State the following: Kohlrausch law of independent migration of ions
The elements of the 3d transition series are given as: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. Answer the following:
Copper has an exceptionally positive \( E^\circ_{\text{M}^{2+}/\text{M}} \) value, why?
Which element is a strong reducing agent in +2 oxidation state and why?
Zn\(^{2+}\) salts are colourless. Why?
Draw the structure of the major monohalo product for each of the following reactions:
Chlorobenzene to biphenyl
Propene to 1-Iodopropane
2-Bromobutane to but-2-ene
Arrange the following compounds in increasing order of their boiling point: \[ \text{(CH}_3\text{)}_2\text{NH, CH}_3\text{CH}_2\text{NH}_2, \text{CH}_3\text{CH}_2\text{OH} \]
