Introduction to Fundamental Concepts of Chemistry

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Chemistry CH 1 CLASS 11 Chemistry Introduction to Fundamental Concepts of Chemistry

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Chemistry Introduction to Fundamental Concepts of Chemistry Chapter 1 Class 11

Chemistry Introduction to Fundamental Concepts of Chemistry Chapter 1 Class 11

1 / 114

In stoichiometry, we follow law of ________ while doing calculations:

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2 / 114

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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3 / 114

Avogadro’s constant is the number of:

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4 / 114

Chemical equations do not tell about the ________ because of certain limitations:

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5 / 114

Which of the following have the same number of molecules?

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6 / 114

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

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7 / 114

Avogadro’s constant is the number of:

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8 / 114

_______ is a macromolecule found in blood.

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9 / 114

The atoms of hemoglobin is heavier than H-atoms:

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10 / 114

It is the fact that 22.414 cm3 of any gas has a different mass but the same number of:

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Which of the following is not true for a mole?

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12 / 114

2 moles of octane (C8H18) burn with 25 moles of oxygen (O2) and produced ___________ moles of carbon dioxide along with 18 moles of water.

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13 / 114

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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14 / 114

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

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Isotopes are the atoms of same element having different number of _________:

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16 / 114

The calculation of the efficiency of a chemical reaction can be checked by knowing the amount of:

17 / 114

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

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18 / 114

Calculate the grams of H2O formed when 8g of CH4 burns in excess of oxygen:

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19 / 114

A compound has an empirical (simple) formula, C2H2O. If the experimental molecular weight is found to be in the range 160โ€“170, the molecular formula of this compound is:

(Atomic weight: C = 12.1, H = 1.008, O = 16).

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20 / 114

The relative abundance of isotopes of elements are measured by?

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21 / 114

The _____ study of composition of pure substance in 17th century clearly shows that few elements are components of many substances

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If 9.8g of sulfuric acid is dissolved in excess quantity of water, it will yield _______ moles of hydrogen ion (H+) and _________ moles of sulphate ions (SO42-).

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23 / 114

Which of the following statement about Avogadro’s hypothesis is correct?

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24 / 114

The mass number of an atom is:

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25 / 114

Which of the following have the same number of molecules?

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26 / 114

Natural gas in homes burns in excess of oxygen, what is the limiting reactant in this case?

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