Assertion : Main constituent of human urine is ammonia.
Reason : If human urine is allowed to stand for some time,it smells strongly of ammonia.

  • 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

Excretion means

Which of the following organs synthesises urea?

The nitrogenous excretory product of a frog tadpole is:

Match the following columns:
Column-$I$ Column-$II$
$P$. Ammonotelic $I$. Bony fishes
$Q$. Ureotelic $II$. Aquatic amphibians and insects
$R$. Uricotelic $III$. Land snails and insects
$IV$. Marine fishes
$V$. Mammals
$VI$. Terrestrial amphibians
$VII$. Reptiles and birds

Excretion is defined as ........

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