Question 3 :
6 litre chlorine is reacted with 10 litre sodium. The excess amount of sodium is
Question 4 :
The vapour density of carbon dioxide [C = 12, O = 16] is :
Question 5 :
Calculate molecular mass of Methane if 400 ml of the gas at STP weighs 0.16g. [Given that weight of 1L {tex}H_2{/tex} is 0.09 g]
Question 8 :
The number of atoms present in one molecule of an element is called its :
Question 9 :
In the combination of Boyle’s and Charles Law pressure is ---------------- proportional to temperature.
Question 10 :
What volume of oxygen would be required to burn completely 350 ml of acetylene?
Question 13 :
Which law states that “under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecule.”
Question 16 :
What is the ratio of Ammonia prepared from {tex}H_2{/tex} and {tex}O_2{/tex}?
Question 17 :
If empirical formula of an organic compound is CH{tex}_2{/tex}O then its molecular formula can be :
Question 23 :
One atomic mass unit is how much part the mass of carbon-12 atoms ?
Question 24 :
What is the percentage mass of copper in Blue Vitriol crystal?
Question 25 :
160 c.c acetylene reacts with 500c.c oxygen. Calculate the total volume of resulting gaseous mixture.
Question 26 :
The volume occupied by 1 mole of gas at STP is :
Question 27 :
What is the total mass of products in the following equation:<br/>{tex}2KClO_3\to2KCl+3O_2{/tex} (catalyst)
Question 28 :
150c.c of ethylene burnt in sufficient air. The amount of required oxygen is
Question 30 :
The number of atoms present in 12 g of carbon [{tex}^{12}_{6}\mathrm C {/tex} ]
Question 32 :
What volume of carbon dioxide would be required to burn completely 500 ml of acetylene?
Question 35 :
What is the ratio of carbon dioxide prepared from CO and {tex}O_2{/tex} ?
Question 37 :
An organic compound has 40% C, 53.3% {tex}O_2{/tex} and 6.7% {tex}H_2{/tex}. The empirical formula is
Question 40 :
The volume occupied by 7 g of nitrogen at STP is :