Name of the Board : Uttarakhand Board of School Education
Class : XII/ Intermediate
Subject : All
Document Type : Old/Model Question Papers
Year : 2017
Website : http://ubse.uk.gov.in/pages/display/99-old—model-question-paper
UBSE Class XII/Intermediate Model Question Paper
Question Paper of Class XII Intermediate Question Paper is now available in the official website of Uttarakhand Board of School Education.
Related : UBSE Uttarakhand Model Question Papers Intermediate 2016 : www.pdfquestion.in/8514.html
Model Questions
Time : 3Hrs.
Max. Marks : 100
Note :
(i) This paper is divided into three Sections – A, B and C. All sections are compulsory.
(ii) Separate instructions are given with each section and question, wherever necessary. Read these instructions very carefully and follow them faithfully.
(iii) Do not exceed the prescribed word limit while answering the questions.
Download Question Paper :
Mathematics : https://www.pdfquestion.in/uploads/UBSEMathematics.pdf
Physics : https://www.pdfquestion.in/uploads/UBSEPhysics.pdf
Chemistry : https://www.pdfquestion.in/uploads/UBSEChemistry.pdf
Biology : https://www.pdfquestion.in/uploads/UBSEBiology.pdf
Physics
1. In electric dipoles are placed inside closed surface. Total electric flux through the closed surface will be –
(a) ne/eo
(b) 2eleo
(c) 2neleo
(d) zero
2. Moving charge produces –
(a) Only electric field
(b) Only magnetic field
(c)Both electric and magnetic field
(d) None of the electric and magnetic field.
3. The reading of an ammeter in alternating circuit is 4 ampere. The maximum value of current in circuit will be –
(a) 4 ampere
(b) 8 ampere
(C) +./z ampere
(d) z”l z ampere
4. Which of the following wave is not electromagnetic wave –
(a) Radio wave
(b) Micro wave
(C) Ultraviolet radiation
(d) Sound wave
5. The speed of light in air is:,.t o’m/s. What will be the speed of light in a glass of refractive index 1.5 ?
6. What are electrons emitted due tq.r effect of light called?
7. How will the mass number of a radioactive material change when one o particle is emitted from its nucleus ?
8. Write the name of maximum used material in the construction of transistor.
9. How many electron should be removed from a piece of meial so that t.oxt0-7 coulomb of positive charge is left on it ?
10. Can two equipotential surface intersect each other ? Explain it.
11. Three conductors of resistance R,, R, and \ are connected in series. Find the formula 2 for equivalent resistance.
12. An electron beam, with speed 3*t0’m/sec enters perpendicularly in a magnetic field of fixro. N/ampere-meter. Calculate the radius ofpath of electron beam .
13. Using graph show the variation of inductive reactance and capacitive reactance with change in frequency ofsource in alternating current circuit.
14. In a step up transformer the number of tums in primary and secondary coils are 100 and 400 respectively. If 120V altemating voltage applied across the primary coil. Then find:-
(a) Transformation ratio
(b) Voltage across secondary coil
15. Name the wave with maximum and minimum wavelength in electromagnetic spectrum.
16. Write the conditions for total internal reflection.
OR
Define critical angle. Write relation between critical angle and refractive index of denser medium.
17. What is the function of a moderator in nuclear reactor. Write the name of two moderators.
OR
What is the function of controlling rods in nuciear reactor ? Why these rods are made of cadmium only ?
18. The maximum and minimum amplitude of a modulated wave is l0 volt and 2 volt respectively. What will be modulation index ?
19. There are two metal spheres one small and other large. Which sphere will have more capacity ? Derive formula for the capacity of parallel plate capacitor if a medium of dielectric constant K placed between the plates ofcapacitor.
20. What do you mean by power in alternating current circuit. Show that in L-C-R circuit ‘ average power loss per cycle is given by l:v-,x i-,x coso where o is phase angle.
21. A candle is placed at a distance 3 cms from the concave mirror of radius of curvature 24 cms. Find the position ofthe image ofthe candle
OR
An object is placed at a distance 20 cms from the convex mirror of radius of curuature 30 cms. Findthe position ofthe image ofthe object.
22. What do you understand by interference of light waves. Write the conditions for the constructive and destructive interference.
OR
Polonium has a half life of I 40 days. In how many days 1 5 gms polonium out of 1 6 gms will decay.
23. Give logic symbol, boolean expression and truth table of OR gate.
24. Give logic symbol, boolean expression and truth table ofAND gate.
25. Draw circuit symbol ofpnp transistor. Explain using circuit diagram, the flow of current in p-n junction diode in forward bias
OR
Draw circuit symbol of npn transistor. Explain using circuit diagram, the flow of current in p-n junction diode in reverse biased.
Biology
Time :3 Hours
Max.Marks :70
1. The number of chambers in a typical gymnospermic anther is-
(a) 2
(b) 4
(c) 8
(d) l0
2. The process of building a mature female gamete is known as-
(a) Oogenesis
(b) Spermatogenesis
(c) Apomixis
(d) Sporogenesis
3. According to Mendel, which of the following is dominant character (trait)-
(a) Dwarf stem and white flower
(b) Terminal flower and green seed
(c) Violet flower and tall stem
(d) Inflated pod and wrinkled seed
4. Who does the work of reading the genetic code in the following-
(a) rRNA
(b) mRNA
(c) tRNA
(d) hnRNA
5. Write the name of the father of Green Revolution in India.
6. When and how was the first use of gene therapy used ?
7. Which statement best describes parasitism in the following statements ?
(a) An organism benefits.
(b) Both organism benefits.
(c) An organism has the advantage, the second is not affected.
(d) An organism has the advantage. the second is collected.
Mathematics
1. Inverse function exists, if the function is –
(a) Only one-one
(b) Only Onto
(c) One-One and onto both
(d) None of these
2. If the direction cosines of a line are l, m, n then the value of l2+ m2+ n2 is –
(a) 1
(b) 3
(c) o
(d) 4
3. Find the identity and inverse element for the binary operation defined by axb=a*b*1, in the set of integers.
4. A bag contains 5 white, 7 red and 4 black balls. From this bag 3 balls are drawn at random. Find the probability of these being all red balls.
5. Prove that the rectangle of maximum area, inscribed in a circle, is a square.