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Total marks of five students = 24 X 5 = 120 Total marks of seven students = (22 X 7) = 154 Required sum = (154 - 120) = 34 Hence, option b.
Which gas is the chief component of Bio-gas?
The noble gas used in radiotherapy is
Protons were discovered by
The _________ property of the element is a whole number.
What property is shared by isotopes of an element?
Which element is denoted by the atomic number 28?
What is the chemical formula of Urea, the best nitrogenous fertilizer?
Nitrous Oxide (N2O) is also known as –
What term describes the enthalpy change when a substance transitions from solid to liquid at its melting point?
Which planet is known as the "Red Planet"?
