What is rate of reaction?
Concept: Rate of a Chemical Reaction
Match the following:
| 1 | Disaccharide | a | Lucas reagent |
| 2 | Carbylamine | b | Condensation polymer |
| 3 | Dacron | c | Obnoxious smell |
| 4 | Low spin complex `d^2sp^3` | d | Sucrose |
| 5 | Anhydrous `ZnCl_2 + conc.HCl` | e | Hexaamminecobalt(III)ion |
Concept: Cyanides, Isocyanides and Nitro Compounds
Name the important ore of silver. Write all the steps and reactions involved in the Cyanide process for the extraction of silver from its ore.
Concept: Cyanides, Isocyanides and Nitro Compounds
Identify the compounds A, B, C, D, E and F:
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids
For the complexion of [Co(NH3)6]3+:
(i) State the hybridisation of the complex.
(ii) State the magnetic nature of the complex.
Concept: Coordination Compounds > Concept of Complexes
Give a reason for the following:
Fluorine gives only one oxide but chlorine gives a series of oxides.
Concept: Concept of Group 16 Elements
Write the structures of all enantiomers possible for lactic acid.
Concept: Introduction of Carbohydrates
Give balanced equations for the following reactions:
(i) Acetaldehyde is heated with hydroiodic acid in the presence of red phosphorous.
(ii) Calcium acetate is subjected to dry distillation.
(iii) Sodium ethoxide is treated with ethyl bromide.
(iv) Benzaldehyde is treated with sodium bisulphite.
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids
Give balanced chemical equations for the following reactions:
(1) Acetaldehyde reacts with hydrogen cyanide.
(2) Acetone reacts with phenylhydrazine.
(3) Acetic acid is treated with ethanol and a drop of conc. H2SO4.
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids
Give one chemical test each to distinguish between the following pairs of compounds:
(1) Acetone and benzaldehyde.
(2) Phenol and benzoic acid.
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids
Choose the most correct option.
Which one of the following has the lowest acidity?
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids
In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Define electrochemical cell
Concept: Batteries > Primary Batteries
State Raoult’s law for the solution containing volatile components
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Why does the cell potential of mercury cell remain constant throughout its life?
Concept: Batteries > Primary Batteries
From the given cells:
Lead storage cell, Mercury cell, Fuel cell and Dry cell
Answer the following:
(i) Which cell is used in hearing aids?
(ii) Which cell was used in Apollo Space Programme?
(iii) Which cell is used in automobiles and inverters?
(iv) Which cell does not have long life?
Concept: Batteries > Primary Batteries
What is meant by positive deviations from Raoult's law? Give an example. What is the sign of ∆mixH for positive deviation?
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Define azeotropes.
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Why does a solution containing non-volatile solute have higher boiling point than the pure solvent ?
Concept: Vapour Pressure of Liquid > Vapour Pressure of Liquid- Liquid Solutions
Define the following term: Primitive unit cells
Concept: Crystal Lattices and Unit Cells
