OMTEX CLASSES: CHEMISTRY

CHEMISTRY

CHEMISTRY

MARCH 2013, OCTOBER 2013, MARCH 2014, OCTOBER 2014, MARCH 2015, JULY 2015, MARCH 2016, JULY 2016. MARCH 2017, JULY 2017


OMTEX CLASSES: Chemistry Important Question Bank for board exam 2018

Calculate the mole fraction a4nd molality of HNO3 in a solution containing 12.2% HNO3.
Define antioxidants and mention two examples.
Define boiling point. Write the formula to determine molar mass of a solute using freezing point depression method.
Define carbohydrates. What are reducing and non-reducing sugars?
Define cell constant. Draw a neat and well labelled diagram of primary reference electrode.
Define complex lipids and write the structures of nucleotide and nucleoside.
Define lanthanoid contraction. Explain its effects.
Define ligand. Write four postulates of potassium dichromate from chrome iron ore.
Define osmosis.
Distinguish between crystalline solid and amorphous solid.
Draw neat and labelled diagram of dry cell.
Explain any two chemical methods of food preservation.
Explain any two chemical methods of food preservation.
Explain graphical method to determine activation energy of a reaction.
Explain how does nitrogen exhibit anomalous behavior amongst group 15 elements.
Explain impurity defect in stainless steel with diagram.
Explain the mechanism of cleansing action of soaps.
Explain the relationship between Gibb’s standard energy change of the reaction and equilibrium constant.
Explain the structure of Sulphur dioxide.
Explain with examples, branched and linear polymers.
How are proteins classified on the basis of molecular shapes?
How is 4-methylpent-3-en-2 one obtained from propan-2-one?
How is Benzonitrile converted to Benzophenone?
How is ethanol prepared from methanol by using Grignard reagent?
How is ethyl amine prepared from methyl iodide?
Mention names and formulae of two ores of aluminum.
State the third law of thermodynamics. Write applications of standard molar entropy. Also, draw neat labelled diagram of electrolytic refining of blister copper.
Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law t1/2 is equal to 3 hours. What fraction of the sample of sucrose remains after 8 hours?
What are Ellingham diagrams? Write the features of it.
What are antibiotics? Give examples.
What are hormones? Write the structure of simple triglycerides.
What are neutral oxides? Explain the nature of zinc oxide with the help of the reactions.
What are the sources of Vitamin C and Vitamin K?
What is Enthalpy of fusion and Enthalpy of atomization?
What is calcination? Explain it with reactions.
What is ferromagnetism? Iron is strongly ferromagnetic. Explain.
What is metamerism?
What is pseudo first order reaction? Give an example for the same.
What is the action of excess of air on ammonia?
Why does p-nitrochlotobenzene undergo displacement reactions readily with attack of nucleophilic HO ion
Write a note on Friedel Craft’s acylation.
Write a note on Gabriel phthalimide synthesis. What are biodegradable polymers and non-biodegradable polymers?
Write a short note on Hoffmann bromamide degradation.
Write cell reactions in lead storage battery during discharge.
Write four points of differences between properties of nitrogen and other elements of group 15.
Write four points of distinction between Lanthanoids and Actinoids.
Write in the structure and IUPAC name of ‘methyl-n-propyl ether’
Write the Nernst equation and explain the terms involved.
Write the chemical reaction to prepare novolac polymer.
Write the different oxidation states of manganese. Why +2 oxidation state of manganese is more stable
Write the reactions involved in large scale preparation of Nitric Acid.

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