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अनुच्छेद 99 के बारे में  खबरों में क्यों? संयुक्त राष्ट्र महासचिव ने अंतरराष्ट्रीय शांति और सुरक्षा के खतरों को संबोधित करने के लिए संयुक्त ...

● Quark ➔ fundamental constituent of matter and is defined as an elementary particle.

● Quarks ➔ combine to produce composite particles called hadrons, the most stable of which are neutrons and protons which are the components of atomic nuclei.

● Interact with the strong nuclear force.

● Protons and neutrons belong to the category of Quarks.

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