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What are antihistamines ? Give two examp...

What are antihistamines ? Give two examples.

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Antihistamines are antiallergy drugs and are used to treat allergy. E.g., skin rashes, conjunctivitis, inflammation of conjunctive of eye and rhinitis (inflammation of nasal mucosa). E.g., diphenylhydramine, chlorpheniramine.
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ICSE-SAMPLE QUESTION PAPER 5 -Questions (Answer the following questions)
  1. What is lanthanoid contraction? What are the consequences of lanthanoi...

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  2. With the help of a diagram, explain the physical significance of energ...

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  3. What are antihistamines ? Give two examples.

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  4. (a) Which one of the folJowing is a food preservative? Equanil, Mor...

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  5. A substance decomposes by following first order kinetics. If 50% of th...

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  6. Draw the structures of major monohalo products in each of the followin...

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  7. Draw the structures of major monohalo products in each of the followin...

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  8. Give one good chemical test to distinguish between the following pairs...

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  9. Name the functional group common to both glucose and fructose.

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  10. Phenyl methyl ether reacts with HI to give phenol and methyl iodide a...

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  11. Give reasons : Alcohol acts as weak base.

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  12. Give chemical test to distinguish dimethyl ether and ethyl alcohol.

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  13. The equilibrium constant for the reaction : N(2)(g)+3H(2)(g)hArr2NH(...

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  14. Ethylene glycol is used as an antifreeze agent. Calculate the amount o...

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  15. Schottky defect lowers the density of ionic crystals while Frenkel def...

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  16. Why solids with F-centres are paramagnetic?

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  17. What happens when freshly precipitated Fe(OH)3 is shaken with small am...

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  18. Why lyophilic colloidal sols are more stable than lyophobic colloidal ...

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  19. What form freundlich adsorption equation will take at high pressure ?

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  20. For the coordination complex ion [Co(NH(3))(6)]^(3+) Give the IUPAC ...

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