List of top Chemistry Questions

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
The weight of a molecule of the compound $C_{60}\, H_{122}$ is $(a \times 10^{-23})$ grams. Approximate value o f $???
Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is $3.0\, g$. On the basis of given data, mark the correct option out of the following statements.
Two students X and Y report the weight of the same substance as 4.0 g and 4.00 g respectively. Which of the following statement is correct?
Under S.T.P. 1 mol of $N_2$ and 3 mol of $H_2$ will form on complete reaction
Volume of 0.1 M $K_2Cr_2O_7$ required to oxidise 35 mL of 0.5 M $FeSO_4$ solution is
Volume of a gas at STP is $1.12 \times 10^{-7}$ cc.Calculate the no. of molecules in it
What is correct for 10 g of $CaCO_3$ ?