Junior Inter Question Papers

AP Junior Inter Chemistry Paper – I Model Questions

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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.

Junior Inter Maths Paper 1B Model Questions – New Syllabus

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Following are model questions for AP Board Junior Intermediate Mathematics students. The questions are framed as per the new syllabus of the Govt. of AP. The duration of the test is 3 hours. There will be three sections in the question paper. Here are some model questions:

1. Find the value of ‘y’, if the line joining the points (3, y) and (2, 7) is parallel to the line joining the points (−1, 4) and (0, 6).

2. Find the distance between the parallel lines 5x − 3y − 4 = 0 and 10x − 6y − 9 = 0

3. If (3, 2, −1), (4, 1, 1) and (6, 2, 5) are three vertices and (4, 2, 2) is the centroid of a tetrahedron, find the fourth vertix.

4. Find the angle between the planes x + 2y + 2z − 5 = 0 and 3x + 3y + 2z − 8 = 0

5. Find the equation to the locus of a point, which forms a triangle of area 2 with the points (1, 1) and (−2, 3).

6. A straight line passing through the point A(−2, 1) makes an angle of 30° with the positive direction of X − axis. Find the points on the straight line whose distance from A is 4 units.

7. Find the derivative of tan 2x from the first principles.

8. A point P is moving on the curve y = 2×2. The x coordinate of P is increasing at the rate of 4 units per second. Find the rate at which the y coordinate is increasing when the point is at (2, 8).

9. Find the angle between the lines whose direction cosines are given by the equation 3l + m + 5n = 0 and to 6mn − 2nl + 5lm = 0 .

10. Find the value of x, if the slope of the line passing through (2, 5) and (x, 3) is 2

11. Transform the equation x + y + 1 = 0 into the normal form.

12. Show that the points (1, 2, 3), (2, 3, 1) and (3, 1, 2) form an equilateral triangle.

13. Find the angle between the planes 2x − y + z = 6 and x + y + 2z = 7

14. A(2, 3) and B(−3, 4) are two given points. Find the equation of the locus of P, so that the area of the triangle PAB is 8.5 sq.units.

15. Find the points on the line 3x − 4y − 1 = 0 which are at a distance of 5 units from the point (3, 2)

16. Find the derivative of sin 2x from the first principle.

17. At any point t on the curve x = a (t + sin t); y = a (1 − cos t), find lengths of tangent and normal

18. A wire of length l is cut into two parts which are bent respectively in the form of a square and a circle. Find the lengths of the pieces of the wire, so that the sum of the areas is the least.

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