# JKBOSE 12th class Physics, Chemistry and Biology chapter wise important questions for board exam 2023.

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Jammu and Kashmir State Board of School Education is going to conduct Annual Regular 2022-23 exams of Class 10th,  11th and 12th in month of March as per Datesheet released by State Board for Soft zones of UT Jammu and Kashmir.

Now exam is too close as exam and today in this blog we will give class 12th Medical stream Physics,  Chemistry  and Biology important subject wise questions. These all questions are very important for Annual Reqular exam.

As we all know repeats lot of questions per year in question papers. So these all questions are based on probability. But these questions are very very important for exam.

## Physics

#### Chapter 1. Electrostatistics

1. Coulombs law and its vector form.
2. Definition of electric field. Electric field due to a dipole on its axial, equatorial and general point.
3. Gauss’s law and its proof.
4. Applications of Gauss’s law:field due to a line charge andsheet charge.
5. Torque on a dipole placed in external field.
6. Work done and potential energy change to rotate a dipole.
7. Capacitance definition and principle.
8. Derivation of capacitance of a ppc with and without a dielectric.
9. Derivation of Energy stored in a capacitor.
10. Vande Graff generator.

11. Quantization of charge
12. Conservation of charge
13. Dielectric constant
14. Properties of electric field lines
15. Superpositionprinciple
16. Corona discharge
17. Define electric potential and potential energy
18. Energy density
19. Electric Polarization and electric displacement
20. Properties of equi potential surfaces

#### Chapter 2. Electric current

1. Drift velocity and itsrelation with current
2. Ohms law and its derivation both scalar and vector form (or) resistance and its
expression.
3. Variation of resistance with temponly
4. Cell, emf and terminal voltage. Relation btw emf and terminal voltge andits
different cases along with graphs.
5. Grouping of resistors(series and parallel combination)
6. Grouping of cells(series and parallel combination)
7. Wheatstone bridgewith its proof using Kirchhoff’s second law
8. Instrument: potentiometer

9. Color coding for objective
10. Resistivity definition
11. Mobility
12. Limitations of ohms law

#### Chapter 3. Magnetism

1. Biotsavart law and its application to find magnetic field due to a current carrying circular loop.
2. Amperes law and its applicationsto find field due to solenoid and toroid.
3. Cyclotron.
4. Force per unit length between two current carrying wires.
5. Numerical work and objectives on galvano meter and its conversions

6. Lorentz force.
7. Velocity selector.
8. Define one ampere.

#### Chapter 4. Magnetostatics

1. Magnetic field due to a bar magnet at its axial and equatorial line.
2. Solenoid as an equivalent bar magnet.
3. Diamagnetism, Paramagnetic and ferromagnetism

4. Angle of dip.
5. Isogonic and isoclinic lines.
6. Magneticdeclination.
7. Magnetic susceptibility and itsrelation with relative permeability.
8. Gauss’s law for magnetism.

#### Chapter 5. EMI

1. Lenz,s law and its consideration with law of conservation of energy.
2. Mutual inductance between two solenoids.
3. Ac generator.
4. What is Motional emf? Expression for induced emf and induced current for a conductor moving in a uniform magnetic field.

5. Eddy currents and applications.
6. Defineself-inductance and mutual inductance Choke coil

#### Chapter 6. ALTERNATING CURRENT

1. Define rms current and find its expression.
2. Series LCR circuit and resonance in series LCR circuit.
3. Transformer.
4. Powerinac circuits.

5. Power factor.
6. Quality factor.
7. Wattles current or idle current.

#### Chapter 7. EM WAVES

1. Properties of em waves.
2. Displacement current.
3. Maxwell’s equations.
4. Electromagnetic spectrum(objective).

#### Chapter 8. OPTICS

1. Mirror formula for concave and convex lens.
2. Lens formula and lens makers formula.
3. TIR and its applications.
4. Prism formula.
5. Microscope and telescope.

1. Critical angle and its relation with refractive index.
2. Lateral shift in a glasss lab.
3. Snells law.
4. Dispersion , angular dispersion , dispersive power , mean deviation.
5. Reddish appearance of sunrise and sunset.
6. Defects of vision
7. Chromatic aberration

#### Chapter 9. Wave OPTICS

1. Huygens principle and its application to prove laws of reflection and
refraction.
2. Interference of light , constructive and destructive interference , ydse and its analysis.
3. Diffraction and its analysis.
4. Difference between interference and diffraction.

5. Wave front and its types.
6. Polarization and Brewster’s law.
7. Malus law.

#### Chapter 9. ATOMS AND NUCLEI

2. Bohrs model of atom.

3. Isotopes, isobars and isotones.
4. Properties of alpha beta and gamma rays.
5. Binding energy, binding energy per nucleon and binding energy curve.
6. Mass defect( numerical ).
7. Properties of nuclear forces.
8. Half-life(numericals also ).
9. Average life.
10. Units of radioactivity ( objective )
11. Alpha beta and gamma decay.
12. Nuclear fission and nuclear fusion.
13. X rays types and properties.

#### Chapter 10. DUAL NATURE OF MATTER AND RADIATION.

1. Photo electric effect under following headings.
a) Definition of photoelectric effect.
b) Experimental verification with graphs.
c) Laws of photoelectric emission.
2. Einstein’s photoelectric equation and its significance.
3. DE Broglie relation

4. Matter waves.
5. Significance of davisson and germer exp.
6. DE Broglie wave length of accelerate delectron (numericals).

#### Chapter 11. SEMICONDUCTORS

1. Classification of materials on the basis of band theory.
2. What are semiconductors? Classification on the basis of band theory
3. PN junction diode in forward and reverse bias conditions including IV
characteristics(graph).
4. PN junction diode as a full wave rectifier
5. Zener diode and its working as a voltage regulator
6. Transistor as anamplifier and switch
7. Truth table oflogic gates (OR, AND, N A N D ,NOR)

7. Crystal breakdown anditstypes
8. Knee voltage
9. Barrier potential
10. Questions on logic gates

#### Chapter 11. Communication system

1. Block diagram.
2. Ground wave, skywave and spacewave propagation.
3. Need of modulation.
4. Height of antenna.
5. Band width of signals(objective ).

## CHEMISTRY

LONG ANSWER TYPE QUESTIONS ( solid state)

1. Discuss magnetic properties of solids
2. Difference between crystalline and amorphous solids
3. Explain Schottky defect in ionic solids

4. Explain Frankel defect in ionic crystals. What type of compound exhibit this defect.
5. Explain electrical properties and dielectric properties of solids

LONG ANSWER TYPE QUESTIONS ( Solutions)

1. State Raoult’s law. Raoult’s law for a solution containing non-volatile solute
2. Discuss elevation in boiling point and depression in freezing point
3. Define colligative properties. Write all the colligative properties with Vant hoff’s factor.

4. Define concentration terms (all)
5. State Henry’s law
6. Define boiling point, osmotic pressure

LONG ANSWER TYPE QUESTIONS ( Electro chemistry)

1. Give the construction and working principle of Galvanic cell and write the reaction
2. State Kohlrausch’s law. Give its applications.
3. What is electrolysis. State Faraday’s laws of electrolysis.
4. Define molar conductivity and its variation with dilution.

5. Relation between molar conductivity and equivalent conductivity
6. Define electrode potential
7. How many Faraday’s are required to deposit 20 gm of calcium.

LONG ANSWER TYPE QUESTIONS ( Chemical kinetics)

1. Difference between molecularity and order of reaction
2. Derive integrated rate laws for zero-order and first order reaction
3. Factors affecting the rate of reaction ( ROR). Explain the effect of temperature on the rate of reaction

4. Define Rate of reaction
5. Average rate of reaction and instantaneous rate of reaction
6. Define activation energy
7. Units of rate constant for zero, first order reaction

LONG ANSWER TYPE QUESTIONS ( Surface chemistry)

1. Difference between chemisorption and physisorption.
2. Difference between lyophilic and lyophobic colloids.
3. Give the methods of purification of colloids.

5. What is Hardy Schulz rule

LONG ANSWER TYPE QUESTIONS ( P-Block elements)

1. With the help of flow diagram. Discuss the manufacture of sulphuric acid by contact process
2. Discuss the oxidation states of group-15 and anomalous behavior of nitrogen
3. Give the electronic configuration of group-16 elements. Why oxygen shows anomalous behavior
4. How is ammonia manufactured industrially. Draw flow chart for the manufacture of ammonia
5. Preparation of nitric acid by Oswald’s process

6. What are interhalogens? Give the structure of
7. Name any two oxoacids of sulphur and draw their structure
8. Uses of noble gases
9. What is allotropy. Give the allotrophic forms of phosphorus

LONG ANSWER TYPE QUESTIONS (Coordination Chemistry)

1. Difference between co-ordination compounds and double salts
2. State CFT. Explain the splitting of d-orbitals in octahedral complexes

3. Define linkage isomerism. Explain with example
4. Define monodentate and bidentate ligands with suitable example
5. Postulates of werner’s theory.
6. Give the IUPAC of co-ordination compounds

## BOTANY

1. Explain Microsporogenesis and megasporogenesis.
2. Give an account of Development of embryo sac in Angiosperms.
3. Explain briefly self and cross pollination.
4. Define terms: Autogamy, Geitonogamy, Anemophilly, Artificialhybridization.
5. Explain Syngamy, Triple fusion and double fertilization
6. Give an account of endosperm development.
7. Explain apomixis and Polyembryony with significance.
8. List 7 pairs of contrasting characters selected by mendel.
9. Explain Law of segregation and independent assortment with anexample.
10. Briefly describe the following:
Incomplete dominance, pleotropy, multiple Allelism.
11. Give an account of semi-conservative DNA replication.
12. Give an account of process of Transcription in prokaryotes.
13. What are the post transcriptional modifications.
14. Define genetic code. What are its various features.
15. Explain the working of lac operon.
16. Explain Biofortification.
17. Write down various applications of plant tissue culture.
18. What are various steps of plant breeding.
19. Explain the role of microbes in industry, biogas, biocontrol.
20. Explain the following with examples-
Mutualism, predation, competition.
21. Explain population growth, decomposition, productivity,ecosystem services.
22. What are the various steps of Hydrarch succession.Q
23. Explain energy flow and ecological pyramids.
24. QWhat are the causes of biodiversity loss.
25. What are Biodiversity hotspots.
26. Explain latitudinal gradient of biodiversity and species arearelationship.
27. Differentiate between insitu and exsitu conservation.
28. Give an account of control of water pollution.
29. Explain solid waste management.
30. Explain green house effect,global warming and ozone depletion.

## ZOOLOGY

Q1: Female Reproductive System with labelled diagram.
Q2: Spermatogenesis and oogenesis.
Q3: Menstrual Cycle.
Q4: Placenta and its function.
Q5: Birth Control Methods.
Q6: Infertility- ZIFT, GIFT, IUT etc.
Q7: Sex determination in Honey bees.
Q8: Genetic disorders like Sickle cell anemia, thalassemia, and hemophilia.
Q9: Downs syndrome, Klinefelter syndrome and Turner’s syndrome.
Q10: DNA fingerprinting / Human genome project.
Q11: Darwinism and Modern Synthetic theory.
Q13: Filariasis, Amoebiasis, Immuno-globins, pneumonia and malaria.
Q14: Acquired Immunity.
Q15: Vaccination and Immunization.
Q16: Allergies, AIDS, Cancer.
Q17: Drugs and Alcohol Abuses.
Q18: Recombinant DNA Technology.
Q19: Application of Biotechnology in Medicine like Insulin, gene therapy.
Q20: BT Cotton.