List of practice Questions

If law of conservation of mass was to hold true, then 20.8 g of $BaCl_2$ on reaction with 9 8 g of $H_2S0_4$ will produce 7.3 g of HCl and $BaS0_4$ equal to
If LPG cylinder contains mixture of butane and isobutane,then the amount of oxygen that would be required for combustion of 1 kg of it will be
If $N_A$ is Avogadro's number then number of valence electrons in 4.2 g of nitride ions $N^{3-}$ is
If $N_A$ is Avogadro's number, then the number of oxygen atom in one g-equivalent of oxygen is
If one million atoms of silver weigh $1.79 \times 10^{-16}g$, the gram atomic weight of silver is
If potassium chlorate is 80% pure, then 48 g of oxygen would be produced from (atomic mass of K= 39) ;
If the atomic mass of carbon was set at 100 u, what would be the value of Avogadro's number ?
If the concentration of glucose $(C_{6}H_{12}O_{6})$ in blood is $0.9\, g\, L^{-1}$, what will be the molarity of glucose in blood?
If the density of water is 1 g $cm^{-3}$ then the volume occupied by one molecule of water is approximately
If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of substance will
In a given sample of $H_2O_2$ each 100 mL of solution contains 68 mg of $H_2O_2$. The molarity of the solution is
Insulin contains 3.4% sulphur. What will be the minimum molecular weight of insulin ?
Iron can be obtained by reduction of iron oxide $(Fe_{3}O_{4})$ with $CO$ according to the reaction: $Fe_{3}O_{4} + 4CO \to3Fe +4CO_{2}$ How many kg of $Fe_{3}O_{4}$ should be heated with $CO$ to get $3\, kg$ of iron?
KBr contains 32.9 % potassium by mass. If 6.40g of $Br_2$ is made to react with 3.60 g of potassium the actual mass of potassium which reacted with $Br_2$ is
Law of constant composition does not hold good for
NO reacts with $O_2$ to form $NO_2$. When 10 g of $NO_2$ is formed during the reaction, the mass of $O_2$ consumed is
On analysis a certain compound was found to contain iodine and oxygen in the ratio of 254 g of iodine (at. mass 127) and 80 g oxygen (at. mass16). What is the formula of the compound ?
One atom of an element weighs $3.32\times 10^{23}\, g$. How many number of gram atoms are there in $20\, kg$ of the element?
One mole of potassium chlorate is thermally decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed ?
One requires 0.01 mole of $Na_2CO_3$. Mass of $Na_2CO_3.10 H_2O$ to be taken is
Out of 1.0 g dioxygen 1.0 g (atomic) oxygen and 1.0 g ozone the maximum number of oxygen atoms are contained in
The equivalent weight of $ {MnSO_4}$ is half its molecular weight when it is converted into
The systematic name of $C_{17}H_{35}COOH$ is
The systematic name of $(CH_3)_2CH-COOH$ is
The total number of gm-molecules of $SO_2Cl_2$ in 13.5 g of sulphuryl chloride .is