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Industrial chemistry deals with the manufacturing of compounds:
Which one of the following can be separated by physical means?
The most abundant element occurring in the oceans?
Which one of the following elements is found in most abundance in the Earth’s crust?
The third abundant gas found in the Earth’s atmosphere is;
One amu (atomic mass unit) is equivalent to:
Which one of the following molecule is not tri-atomic?
The mass of one molecule of water is:
The molar mass of H2SO4 is:
Which one of the following is a molecular mass of O2 in amu?
How many number of moles are equivalent to 8 grams of CO₂?
Which one of the following pairs has the same number of ions?
Which one of the following pairs has the same mass?
The correct balanced equation for the reaction __C2H6O + __O2 → __CO2 + __H2O is-
The correct balanced equation for the reaction __KNO3 + __H2CO3 → __K2CO3 + __HNO3 is-
The correct balanced equation for the reaction __CaCl2 + __Na3PO4 → __ Ca3(PO4)2 + __ NaCl is-