Question
Discuss:
  1. Principles of treatment.
  2. Vaccination.

Answer

  1. Principles of treatment:
  • To reduce the symptoms of disease.
  • To remove the cause of disease.
  • To prevent the cause of disease.
  • To prevent the spread of disease.
  • To make the patient healthy again by helping him to overcome the effects of the diseases like weakness etc.
  1. Vaccination: A vaccine is a product that produces immunity from a disease and can be administered through needle injections, by mouth, or by aerosol. A vaccination is the injection of a killed or weakened organism that produces immunity in the body against that organism. An immunization is the process by which a person or animal becomes protected from a disease. Vaccines cause immunization, and there are also some diseases that cause immunization after an individual recovers from the disease.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Explain how, nitrogen, oxygen and argon gases are separated form air.
Write down the characters of bee variety suitable for bee keeping.
An electron moving with a velocity of 5 × 104 m s-1 enters into a uniform electric field and acquires a uniform acceleration of 104 m s–2 in the direction of its initial motion. Calculate the time in which the electron would acquire a velocity double of its initial velocity. How much distance the electron would cover in this time?
Explain the mechanism of compost formation.
What does a neuron look like?
Discuss the various methods which are used to control plant diseases.
Explain with examples
  1. Atomic number,
  2. Mass number,
  3. Isotopes,
  4. Isobars.
Give any two uses of isotopes.
Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in $100$ grams of water to form a saturated solution).
Substance Dissolved Temperature in K
283 293 313 333 353
Solubility
Potassium nitrate $21$ $32$ $62$ $106$ $167$
Sodium chloride $36$ $36$ $36$ $37$ $37$
Potassium chloride $35$ $35$ $40$ $46$ $54$
Ammonium chloride $24$ $37$ $41$ $55$
$66$
  1. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in $50$ grams of water at $313\ K$?
  2. Pragya makes a saturated solution of potassium chloride in water at $353K$ and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.
  3. Find the solubility of each salt at $293\ K$. Which salt has the highest solubility at this temperature?
  4. What is the effect of change of temperature on the solubility of a salt?
Describe the methods of carbon replenishment of atmosphere.
$i.$ A person weighs $110.84 N$ on the moon, whose acceleration due to gravity is $1/6$ of that the earth. If the value of g on the earth is $9.8 m/s^2,$ then calculate
$a. g$ on the moon
$b.$ mass of person on the moon
$c.$ weight of person on the earth
$ii.$ How does the value of g on the earth is related to the mass of the earth and its radius? Derive it.