(Download) INJSO Olympiad Question Papers 2012

Question paper
Exam Name : INJSO Olympiad Question Papers 2012

Section A

2. The electrons, identified by quantum numbers n and l can be placed in order of increasing energy,
from the lowest to highest as
i.   n = 4 & l = 1
ii.  n = 4 & l = 0
iii. n = 3 & l = 2
iv.  n = 3 & l = 1
(a) iv < ii < iii < i
(b) ii < iv < i < iii
(c) i < iii < ii < iv
(d) iii < i < iv < ii

3. Which of the following is an example of secondary succession?
(a) Vegetation developing on a bare rock.
(b) Vegetation developing following forest fire.
(c) Fungus growing on a banana peel.
(d) Conversion of pond into a crop field by humans.

4. In the process of electrostatic induction...
(a) a conductor is rubbed with an insulator.
(b) a charge is produced by friction.
(c) negative and positive charges are separated.
(d) electrons are ‘sprayed’ on the object.

5. A white salt is readily soluble in water and gives colorless solution with pH of about 9. The salt would be...
(a) NH₄NO₃
(b) CH₃COONa   
(c) CH₃COONH₄      
(d) CaCO₃

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