AP Junior Inter Model Papers – Page 11

SECTION – A
Very short answer type questions.
Note: Answer ALL questions. 10 × 2 = 20
1. What are the coordination numbers of Na+ and Cs+ in NaCl and CsCl?
2. Find RMS velocity of CO2 gas at 27 oC.
3. Give reasons for the higher boiling point of H2O than HF?
4. Calculate the Oxidation number of Manganese in the following: (a) KMnO4 and (b) MnSO4
5. A white ancient painting has turned black over the years. What do you do to restore its original colour?
6. What is ‘mortar’? Give its composition and use.
7. How do acid rains occur? Give one effect of it.
8. Why is the temperature of the earth increasing?
9. Explain the detection of (a) Nitrogen and (b) Halogens in an organic compound.

SECTION – B
Short answer type questions.
Note: Answer any SIX questions. 6 × 4 = 24
11. Deduce (a) Boyle’s Law and (b) Graham’s Law from Kinetic gas euqation.
12. Explain Valency Shell Electron Pair Repulsion (VSEPR) theory?
13. An Organic Compound on analysis was found to contain 16.27% Carbon, 0.67% Hydrogen and 72.2% Chlorine. The vapour density of the compound is equal to 73.75. Calculate the empirical formula and
molecular formula of the compound.
14. Write any two oxidation and two reduction reactions of Hydrogen Peroxide.
15. Explain the structures of XeO3 and XeO4
16. A mixture of a hydride of boron and ammonia are passed through a hot tube to get a compound A. Give the formula, name and structure of it.
17. Graphite is a good conductor of electricity, while diamond is not. Explain.
18. Write a note on the importance of Mg+2 and Ca+2 ions in biology.

SECTION – C
Long answer type questions.
Note: Answer any TWO questions 2 × 8 = 16
19. Explain the significance and purpose of four quantum numbers.
20. Define first and second ionization potentials. Why is second ionization potential greater than the first ionization potential?
Explain four factors affecting ionization potential values of elements.
21. Describe two methods of preparation of ethylene. Give equation for reactions of ethylene with the following.
a) Ozone, b) Hypo halous acid, c) Cold and dilute alkaline KMnO4 d) Heated with O2 at high pressure.

I. Answer ALLquestions 10 × 2 = 20
1. Who first discovered the cell? Which book was written by him?
2. What is polygamous condition? Give two examples.
3. To which family do pulses belong? Give two examples with cientific
names.
4. How do you identify heterochromatin and euchromatin?
5. The sequence of Nitrogen bases in one strand of DNA is G C T A T G C C A T G C. What is the sequence present on the opposite strand? What is the relationship known as?
6. Explain why heartwood cannot conduct water and mineral salts.
7. What is pericycle? What is its function in roots?
8. Name two free floating hydrophytes having balancing roots.
9. What phenotypic and genotypic ratios are expected in F2 generation
when monohybrid and dihybrid crosses are made.
10. Differentiate between spontaneous and induced mutations.

II. Answer any SIX questions 6 × 4 = 24
11. What are insectivorous plants? Describe the mechanism of insect trapping in Nepenthes.
12. Write short notes on false whorl like inflorescence.
13. Define seed germination. Mention and define different types of seed germination with examples.
14. Write a note on ICBN.
15. Describe the structure and function of ‘power houses of cell’.
16. Bring out the differences between mitosis and meiosis.
17. Give in detail the anatomical adaptations shown by xerophytes.
18. Which characters of pea plans were considered by Mendel for
hybridization experiments?

III. Answer any Two questions. 2 × 8 = 16
19. What are multipurpose stem modifications? Describe with suitable examples.
20. Describe the structure of an embryosac that is ready for Fertilization with the help of a neat labelled diagram.
21. Describe the transverse section of a dicot stem.

AP Junior Inter Chemistry Paper – I Model Questions

AP Junior Inter Botany Paper – I Model Paper