The density of air is 0.001293 g/cc at STP. Its vapour density is
The density of air is 0.001293 g/cc at STP. Its vapour density is Options (a) 0.001293 (b) 8.2786 (c) 14.49…
7 years ago
Basic Concepts of Chemistry
Boron has two stable isotopes, ¹°B(19%) and ¹¹B(81%). Average atomic weight
Boron has two stable isotopes, ¹°B(19%) and ¹¹B(81%). Average atomic weight for boron in the periodic table is Options (a)…
7 years ago
1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide
1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of metal is…
7 years ago
At S.T.P the density of CCl₄ vapours in g/L will be nearest to
At S.T.P the density of CCl₄ vapours in g/L will be nearest to Options (a) 6.87 (b) 3.42 (c) 10.26…
7 years ago
In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number
In the final answer of the expression (29.2 - 20.2) (1.79 x 10⁵) / 1.37. The number of significant figures…
7 years ago
0.45 g acid of molecular weight 90 was neutralise by 20 mL of 0.5 N KOH
0.45 g acid of molecular weight 90 was neutralise by 20 mL of 0.5 N KOH. The basicity of acid…
7 years ago
One litre hard water contains 12 mg Mg²⁺. Milli equivalents of washing soda
One litre hard water contains 12 mg Mg²⁺. Milli equivalents of washing soda required to remove its hardness is Options…
7 years ago
The percentage weight of Zn in white vitriol [ZnSO₄ 7H₂O] is approximately equal
The percentage weight of Zn in white vitriol [ZnSO₄ 7H₂O] is approximately equal to Zn=65, S=32, O=16 and H=1) Options…
7 years ago
How many moles of lead (II) chloride will be formed from a reaction between
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2…
7 years ago
What is the mass of precipitate formed when x mL of solution is mixed with another
What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO₃ is mixed with 50 mL…
8 years ago