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Atomic number of an element is equal to the number of ____ in the nucleus.
What term describes the enthalpy change when a substance transitions from solid to liquid at its melting point?
A substance X turns the colour of red litmus blue, and it will change methyl orange-
What happens when camphor is heated?
Which gas turns into a liquid at the lowest temperature?
What property is shared by isotopes of an element?
Which of the following statement is CORRECT?
What is the atomic number of silicon, a component of quartz?
Which substance is used to dissolve noble metals?
Which of the following is the most reactive element in the Periodic table?