19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 ml of 2 M HCl will be
The density of a solution prepared by dissolving 120g of urea (mol. mass = 60 u) in 1000 g of water is 1.15g/mL. The molarity of this solution is
Assertion (A) Molarity of a solution depends upon temperature. Reason (R) Volume of a solution is temperature dependent entity.
Molarity equation of a mixture of solutions of same substance is given by (a) M V M V M V ... M M M x x x x (b) M V M V M V ... M V V V (c) M M M ... M V V V V V V (d) M M M ... M V V V V V V …
The final molarity of a solution made by mixing 50 mL of 0.5 M HCl, 150mL of 0.25 M HCl and water to make the volume 250 mL is
A standard solution of 0.165 M HCl is being used to determine the concentration of an unknown NaOH solution. If 25.5 mL of an acid solution are required to neutralize 15.0 mL of the base, what is the mo…
Assertion :When a solution is diluted from volume V1 to V2 by adding solvents, its molarity before dilution M1 and after dilution M2 are related as : M1V1 = M2V2 Reason:During dilution, moles of the solute remains co…
Volume of water required to make 1N solution from 2 mL conc. HNO3.
Volume of acid that contains 63g pure acid is.
Normality of acid is.
HCl is 80% ionised in 0.01 M aqueous solution. The equilibrium molarity of HCl in the solution is
The molarity of 68 % of H2SO4 whose density is 1.84 g/cc is
Calculate the analytical molarity of Cl– ion in solution which is prepared by mixing 100 ml of 0.1 M NaCl and 400 ml of 0.01 M BaCl2.
The following process has been used to obtain iodine from oil-field brines in California. NaI + AgNO3 ->AgI + NaNO3 AgI + Fe ->FeI2 + Ag FeI2 + Cl2 ->FeCl3 + I2 If 381 kg of iodine is produced per hour then mass of A…
NX is produced by the following step of reactions M + X2 -> M X2 MX2 + X2 ->M3X8 M3X8 + N2CO3 ->N X + CO2 + M3O4 How much M (metal) is consumed to produce 206 gm of NX. (Take At. wt of M = 56, N=23, X = 80)
Assertion: Equivalent weight of a base molecular weight = acidity Reason: Acidity is the number of replaceable hydrogen atom in one molecule of the base.
Assertion : 1mole of H2SO4 is neutralised by 2 moles of NaOH but 1 equivalent of H2SO4 is neutralised by 1 equivalent of NaOH. Reason : Equivalent weight of H2SO4 is half of its molecular weight while e…
Assertion :For a binary solution of two liquids, A and B, with the knowledge of density of solution, molarity can be converted into molality. Reason: Molarity is defined in terms of volume and molality …
Which of the following is the most accurate measurement?
The result of the operation 2.5 × 1.5 should be which of the following on the basis of significant figures?
2.005 has ….A…. significant figures. Here, A refers to
How can we write 232.508 in scientific notation?
Which of the following represents the largest unit?
Statement I: The temperatures in degree Celsius and degree Fahrenheit are related to each other by the following relationship. º F º C Statement II The temperature on degree Celsius and Kelvi…
Which of the following statements(s) is false about the arrangement of particles, in different states of matter?