Chemistry NBF book FBISE class 11

The study of relative amount of substance involved in chemical reaction, is called __________.

• Micrometry

• Microscopy

• Stoichiometry

• Calculations

1 mole of O₂ has mass of ______ grams.

• 16

• 32

• 18

• 34

Na⁺ is

• Compound

• Molecule

• Ion

• Element

H₂ + I₂ ------> 2HI

find the moles of HI if there are 0.86 moles of H₂

• 1.68

• 1.72

• 1.78

• 1.86

What is the numerical value of Avogadro's number ?

• 6.023 x 10³²

• 6.23 x 10²³

• 5.96 x 10²³

• 6.023 x 10²³

What is the molar mass of H₂O ?

• 16 g mol^-1

• 18 g mol^-1

• 20 g mol^-1

• 14 g mol^-1

Draw the structure of helium atom

Which element is this ( Na )

no capital letters

Number of atoms present in one mole of H₂O is same as 1 mole of NaCl has ?

• True statement

• False statement

Calculate the molar mass of C₆H₁₂O₆ ?

• 180 g/mol

• 120 g/mol

• 150 g/mol

• 190 g/mol