Human blood platelets releases ___ which helps in clotting of blood.
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The diameter of the reflecting surface of a spherical mirror is called a/an
The hardest natural substance is
Atomic mass of Sulphur is 32 u. The number of moles in 16 grams of Sulphur is:
Who is the author of the book titled 'Citizen and Society'?
The instrument used to examine a person's digestive tract is called ___.
How many bones does a new born human baby have?
A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?