List of top Chemistry Questions

Derive relationship between \( \Delta H \) and \( \Delta U \) for gaseous reaction. Define: Vulcanization. What is peptide bond?

Define: Diastereoisomers. Give cis and trans isomers of [Co(NH3)4Cl2]+.
What is reference electrode?
Give reason : Bleaching action of ozone is also called dry bleach. 

Draw labelled diagram of H\(_2\) – O\(_2\) fuel cell. Write two applications of fuel cell.
Write chemical reactions for the following conversions:
i. Acetic acid into acetic anhydride
ii. Acetic acid into ethyl alcohol
Write IUPAC name and structure of methylphenylamine.
Explain Aldol condensation of ethanal.
Explain anomalous behaviour of oxygen in group 16 with respect to:
i. Atomicity
ii. Magnetic property
iii. Oxidation state
Show that, time required for 99.9 percent completion of a first order reaction is three times the time required for 90 percent completion. Give electronic configuration of Gd (Z = 64). Write the name of nano structured material used in car tyres to increase the life of tyres.
Explain formation of [CoF\(_6\)]\(^{3-}\) complex with respect to:
i. Hybridisation
ii. Magnetic properties
iii. Inner/outer complex
iv. Geometry
A weak monobasic acid is 10 percent dissociated in 0.05 M solution. What is percent dissociation in 0.15 M solution?
2000 mmol of an ideal gas expanded isothermally and reversibly from 20 L to 30 L at 300 K, calculate the work done in the process (\( R = 8.314 \, \text{J K}^{-1} \text{mol}^{-1} \)).
Write the reactions for the formation of nylon 6,6 polymer.
Define Extensive property. Calculate the work done during the expansion of 2 moles of an ideal gas from 10 dm\(^3\) to 20 dm\(^3\) at 298 K in vacuum.
Draw structures of the following compounds:
i. Chloric acid
ii. Peroxydisulphuric acid
Define Osmosis. How will you determine molar mass of non-volatile solute by elevation of boiling point?
Define: Green chemistry. Write two advantages of nanoparticle and nanotechnology.
Write chemical reaction for the preparation of glucose from sucrose. Write structure of D-ribose.
Explain the following terms:
i. Substitutional impurity defect
ii. Interstitial impurity defect
What is the action of the following reagents on ethyl amine:
i. Chloroform and caustic potash
ii. Nitrous acid
Define: Acidic buffer solution. Write the relationship between solubility and solubility product for PbI\(_2\).
Write the structure of the product formed when chlorobenzene is treated with sodium metal in the presence of dry ether.
Write the name of the product formed by the action of LiAlH4/ether on acetamide.
Write the name of the technique used to know geometry of nanoparticles.
Distinguish between lanthanides and actinides.
Calculate molar conductivity for 0.5 M BaCl\(_2\) if its conductivity at 298K is 0.01 \( \Omega^{-1} \text{cm}^{-1} \).
Write the name of platinum complex used in the treatment of cancer.