Introduction to Fundamental Concepts of Chemistry Chemistry Chapter 1 Class 11

Chemistry Book FSC CH 1 CLASS 11 Class 12 HSSC Chemistry INTRODUCTION.

Which of the following has six isotopes?

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The mass number of an atom is:

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Find the mass in grams of 1.69 mol of phosphoric acid:

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Number of neutrons in 6630Zn is:

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What is the mass of 2 dm3 of oxygen at S.T.P?

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What is the mass in grams of 1.69 moles of phosphoric acid?

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A compound has an empirical formula CH2Cl and molecular formula mass as 99gmol-1, identify the compound:

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Different kinds of atoms of the same element are called isotopes having different __________ but same ___________ properties.

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X-ray work in 20th century shows that diameter of the atoms are of the order:

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The actual yield is always less than the theoretical yield due to:

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Mass of an atom ranges from?

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Which of the following will react with water?

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The mass of ๐‘๐‘Ž๐‘‚๐ป needed to prepare 0.2 molal solution in 500๐‘” pure water at 4โ„ƒ is:

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Atomicity is determined by number _________ of present in a molecule:

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The unit used to express the relative atomic mass is called?

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A compound of sodium oxide has 74.2% of sodium and 25.8% of Oxygen. The empirical formula of the compound is?

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Identify the value of R at STP:

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A sample of 0.7 moles of metal ‘M’ reacts completely with an excess of fluorine to form 45 g of MF2. How many moles of F are present in it?

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Correct representation of element with atomic number and atomic mass is:

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The number of moles of CO2 which contains 16g of oxygen:

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The number of neutrons in H2SO4 are ________:

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The number of moles of CO2 that contain 8g of oxygen is:

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The amount of product according to the balanced chemical equation is called as?

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Atoms having same mass number but different atomic numbers are called?

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Greater the number of moles, _________ will be the number of molecules.

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Determine the number of moles of O in 10.6g of Na2CO3:

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How many molecules are there in 2.1 moles of CO2:

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During combustion analysis, which one is used for absorbing carbon dioxide?

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