Assertion: Cocaine has a potent stimulating action on the central nervous system,producing a sense of euphoria and increased energy.
Reason: Injecting the microbes intentionally during immunisation or infectious organisms gaining access into the body during natural infection induces active immunity.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

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Similar Questions

$A$ - Smoking increases $O_2$ content in blood.
$R$ - Nicotine stimulates the adrenal gland.

Read the following sentences and choose the correct sentences:
$1.$ Dysentery,plague,and diphtheria are caused by bacteria.
$2.$ $Salmonella$ $typhi$ directly affects the respiratory system.
$3.$ Amoebiasis and Ascariasis are caused by contaminated water.
$4.$ Internal bleeding,anemia,and muscular pain are symptoms of elephantiasis.

Match the following columns:
Column-$I$Column-$II$
$1.$ Typhoid$a.$ Trichophyton
$2.$ Pneumonia$b.$ Rhinovirus
$3.$ Common cold$c.$ Haemophilus influenzae
$4.$ Ringworm$d.$ Salmonella typhi

Read the statements carefully and determine how many statements provide correct information.
$(1)$ In innate immunity,the cellular barrier is represented by four main types of cells.
$(2)$ The $BCG$ vaccine contains live attenuated Mycobacterium.
$(3)$ In $G-6-P$ dehydrogenase deficiency,$RBCs$ start to disintegrate (hemolysis).
$(4)$ Nicotine stimulates the adrenal gland.

Difficult
View Solution

Match the following:
Column-$I$ Column-$II$
$(A)$ Ringworms $(P)$ $W. malayi$
$(B)$ Elephantiasis $(Q)$ Rhino virus
$(C)$ Common cold $(R)$ $HIV$
$(S)$ $Trichophyton$

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