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

  • A

    $A$ and $R$ both are correct.

  • B

    $A$ and $R$ both are incorrect.

  • C

    $A$ is correct, $R$ is incorrect.

  • D

    $A$ is incorrect, $R$ is correct.

Similar Questions

Oncogenes were discovered by

  • [AIEEE 2004]

Salmonella typhi affects

Assertion : Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol.

Reason : A drunken person usually feels tense and less talkative.

  • [AIIMS 2004]

Match the columns :

Column - $I$ Column - $II$
$(a)$ Pre erythrocytiC cycle $(1)$ Meta cryptomerozoites enters RBC and becomes spherical in shape.
$(b)$ Exo-erythrocyticcycle $(2)$ sporozoites in saliva are introduced to human blood
$(c)$ Endo-erythrocytic cycle $(3)$ Breaks the liver cells and comes our of blood.

 

Identify the molecules $(A)$ and $(B)$ shown below and select the right option giving their source and use.

Molecule             $\to $         Source                  $\to $                Uses

  • [AIIMS 2015]