If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end
If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end…
7 years ago
Basic Concepts of Chemistry
The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is
The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is Options (a) 10 gm molecules (b)…
7 years ago
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18g
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18 g of steam on…
7 years ago
10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded
10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water…
7 years ago
Mass of one atom of X is 2.66 x 10⁻²³ g, then its 32 g is equal to
Mass of one atom of X is 2.66 x 10⁻²³ g, then its 32 g is equal to Options (a)…
7 years ago
The number of significant figures for the three numbers 161 cm, 0.161 cm
The number of significant figures for the three numbers 161 cm, 0.161 cm, 0.0161 cm are Options (a) 3,4,5 respectively…
7 years ago
Volume occupied by one molecule of water (density= 1 g cm⁻³) is
Volume occupied by one molecule of water (density= 1 g cm⁻³) is Options (a) 9 x 10⁻²³ cm³ (b) 6.023…
7 years ago
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5
³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5 then ratio of these two isotopes…
7 years ago
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride ions (N³⁻) is Options (a) 2.4…
7 years ago
2.76 g of silver carbonate on being strongly heated yield a residue weighing
2.76 g of silver carbonate on being strongly heated yield a residue weighing Options (a) 2.16 g (b) 2.48 g…
7 years ago