Name of the Organisation : National Council of Educational Research and Training (ncert.nic.in)
Title : Model Question Papers for X and XII
Location : Delhi
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Home Page : http://www.ncert.nic.in/

Model Question Paper for Class X :
Hindi A : http://www.ncert.nic.in/publication/...ssX/HindiA.pdf
Hindi B : http://www.ncert.nic.in/publication/...ssX/HindiB.pdf
Sanskrit : http://www.ncert.nic.in/publication/...nskritCore.pdf
Urdu : http://www.ncert.nic.in/publication/...lassX/Urdu.pdf

Model Question Paper for Class XII :
Elective English : http://www.ncert.nic.in/publication/...shElective.pdf
Mathematics : http://www.ncert.nic.in/publication/...ssXII/Math.pdf
Biology : http://www.ncert.nic.in/publication/...assXII/Boi.pdf
Business Studies : http://www.ncert.nic.in/publication/...%20Studies.pdf

Model Question paper for XII Chemistry :
Question Answers :

1.Differentiate between the following
(a) Multimolecular colloids and macromolecular colloids
(b) Coagulation and peptisation
(c) Activity and selectivity of catalyst.

2. Give reason
a) PCl5 acts as an oxidising agent.
b) Dinitrogen is chemically inert.

3. Give the principle of contact process for the manufacture of sulphuric acid.
Give an equation to show oxidising property of sulphuric acid.

4. Explain with the help of electronic effects,generally haloalkenes undergo nucleophilic substitution reactions whereas haloarenes undergo electrophilic substitution reactions.

5. Give IUPAC names of the alkyl halide and the alkoxide required for the preparation of tertiary butyl ethyl ether. Give the products formed when tertiary butyl ethyl ether is treated with an equal number of moles of HI as that of the ether.

See More Questions Download the PDF File : http://www.ncert.nic.in/publication/.../Chemistry.pdf

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