List of top Chemistry Questions asked in PSEB XII

Write down the IUPAC names of: (i) Na[PtBrCl(ONO)(NH\(_3\))] (ii) [Ag(NH\(_3\))\(_2\)][Ag(CN)\(_2\)]
Transition metals form alloys with other transition metals. Explain why?
True/False: Benzaldehyde cannot undergo Cannizzaro reaction.
True/False: The red brown precipitate of aldehydes with Fehling’s solution is due to the formation of Cu\(_2\)O.
What are carbohydrates?
What are Aldoses?
Define Monosaccharides.
Name a monosaccharide.
Glucose molecule has four asymmetric carbons. Find the total number of optical isomers in glucose.
The boiling point of a solution containing 1.5 g of dichlorobenzene in 100 g of benzene was higher by 0.268 K. Calculate the molar mass of dichlorobenzene. (\(K_b\) for benzene = 2.62 K molal\(^{-1}\))
Which of the following is most reactive towards nucleophilic addition reactions?
Which of the following reagents cannot be used to distinguish between pentanal and 2-pentanone?
Which of these is most acidic?
True/False: The boiling point of ethers are higher than those of isomeric alcohols.
The reaction of toluene with Cl\(_2\) in the presence of FeCl\(_3\) gives predominantly-
True/False: The crystal field splitting \(\Delta_o\) depends on the field produced by the ligand and the charge on the metal ion.
If the unit of specific rate constant (\(k\)) for a certain gaseous reaction is atm\(^{-2}\) s\(^{-1}\), then the order of the reaction is-
What is the final oxidation state of manganese after the electrochemical reactions in a Dry Cell?
The coordination number of platinum in \([\text{PtCl}(\text{C}_5\text{H}_5\text{N})(\text{NH}_3)]\) is-
Isotonic solutions have:
An unripe mango placed in a concentrated salt solution to prepare pickle, shrivels because-
In comparison to a 0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl\(_2\) solution is?