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HSC board Previous Question

Chapter 2 Mechanical properties of fluid: 1. Define the term. Sphere of influence  Angle of contact Surface film 2. Define angal contact.. State it's four characteristics. 3.Define surface tension. State it's S.I units and dimensions. 4. Draw a neat diagram for the rise of liquid in capillary tube showing the components of surface tension. 5. What is capillary? Give any two applications of capilarity. 6. What is surface energy? Obtain the relation between surface tension and surface energy. 7. Drive Laplace's law for spherical membrane of bubble due to surface tension. 8. Explain the phenomenon of surface tension on the basis of molecular theory. 9. State Stock's law and give two  factors affecting angle of contact. 10. Compare streamline flow and Turbulent flow. 11. Calculate the rise of  water inside a clean glass capillary tube of radius 0.1mm, when immersed in water of surface tention 7×10^-2 N/m. The angel of contact between water and glass is zero density of water...

Chapter 1 physics previous questions

  Chapter 1 Rotational Dynamics Obtain the relation between linear velocity and angular velocity in U.C.M Define radius of gyration. Explain in physical significance. Define moment of inertia. State it's SI unit and dimensions. Distinguish between centripetal force and centrifugal force. What is the value of tangential acceleration in U.C.M State and example the theorem of parallel axex. Draw a neat labelled diagram of conical pendulum. State the expression for its periodic time in terms of length. State and prove the principle of perpendicular axes. Obtain and expression for maximum speed with which a vehicle can be driven safely on a banked road. So that the safety speed limit is independent of the mass of the vehicle. State and prove the law of conservation of angular momentum. Obtain an expression for total kinetic energy of a rolling body in the form 1/2MV2[1+k2/k2 What is the value of tangential acceleration in U.C.M Obtain an expression for torque acting on body rotating wit...

Class 12 biology chapter 1solutions

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Sketch and label male gametophyte of angiosperms. Figure 1.5 text book. Exine: Thick, outer sculptured layer. Intine: Thin inner wall. Germ pore: Area for pollen tube emergence. Vegetative cell: Large cell with irregular nucleus. Generative cell smaller.  2. Sketch and label female gametophyte        of angiosperm.    Fig 1.6 text book  Antipodals: Three cell at the chalazal end. Polar Nuclei: Two nuclei in th hat large central cell that fuse to form the secondary nucleus. Egg Cell: A single haploid cell at the micropylar end. Synergids: Two cells flanking the egg cell with filiform apparatus for guiding pollen tube. Micropyle: Opening for pollen tube entry  Chalaza: opposite end of the ovule. Nucleus: Nutritive tissue surrounding the gametophyte. Integuments: Outer protective layers of the ovule. Funicle: stalk attaching the ovule to the placenta. Embryo sac: Contains the seven celled, eight nucleate structure. 3. Give the significance of do...

HSC board Previous Question

Chapter 3 Inheritance and Variation. 1. Explain test cross with suitable example and State it's ratio. 2. Give an account of incomplete dominance with suitable examples. 3. Explain codominance in colour coat in cattle with cheaker board method. 4. Write a note on sex linkage.  5. Write an account of chromosomal theory of inheritance. 6. Explain mechanism of sex determination in bird. 7. Differentiate between  complete and incomplete linkage  8. Give an account of pleiotropy with suitable example. 9. Describe the structure of sex chromosome with the help of labelled diagram. 10. Explain inheritance pattern of colours blindness with suitable chart. 11. Write a note on Down's syndrome. 12. Explain the mechanism of sex determination in human being. 13. What is a test cross explain significance of a test cross. 14. Explain type of chromosomes on the basis of position of cenetromer. 15. Give the genotype of Turner's syndrome. 16. Give detail of account of sex linked inheritance...

HSC board previous Questions

  Chapter 2:  Reproduction in lover and higher animals  Draw a neat labelled diagram of T.S. of testies. Describe the phases of menstrual cycle. Give the significance of fertilization. Sketch and label human sperm. Describe the structure of blastula. Describe the process of spermatogenesis with the help of diagram  Explain ovarian cycle with its different phases. Explain the structure of human sperm. Explain mechanism of fertilization in humans. Describe the fate of three germinal layers in human embryonic development. Sketch and label seminiferous tubule as seen in the T.S. of testies. Explain the structure of secondary oocyte. Write a note on fallopian tube. Mention any two functions of uterus. Sketch and label human male reproductive system. Explain the process of early cleavage till the formation of morula. Write a note on Blastocyst. Sketch and label phases of oogenesis. Describe the changes involved during gastrulation  Write and label diagram describe the...

Chapter 1 biology HSC previous questions

  Chapter 1 Reproduction in lower and higher plant. 1. Sketch and label a pollen grain of angiosperm.  2. Sketch and label female gametophyte of angiosperms. 3. Give the significance of double fertilization. With the help of digram. 4. Write a note on vegetative reproduction by budding.  5. Describe the structure of Angiosperm pollen grain. 6. Give the floral adaptations anemophily and entomophily. 7. Sketch and label male. gametophyte in angiosperm  8. Describe the internal structure of the anther. 9. Describe the structure of anatropus ovule with the help of labelled digram. 10. Draw a labelled diagram of monocot and dicot  seed. 11. Explain outbreeding devices in Angiospermic plants. 12.Draw a well labelled diagram of T.S. anther. 13.Explain water pollination in detailed with its types. 14.What is double fertilisation. Explain its importance and diagram.  15. Give the floral adaptations for chiropterophily. 16. With the help of a meet and labelled diagra...

Dose response Relationship pharmacology

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  Dose- Response Relationship: Dose:  The quantitative amount of drug which required for produce effects in body and which in taken by patient at a one time. Example: Dolo 650g Response: The effect produce by the drug in body is know as the Response of that drug. This relationship can be shown with the dose response curve show how the body responds to different doses. This graded response is a basic concept in pharmacology. The same principle apply to both human and animal. Generally the response increase with increase in dose.                  Dose ∝Response Generally the intensity of response increase with increase in dose and dose response curve is a rectangular hypebola. The dose response interaction obey low of mass action. E = Emax × [ D]    KD +[ D ]  Where :                 E= Observed effects                 D= Dose     ...