JEE Main entrance exam Question Bank Solutions for Chemistry (JEE Main)

The mass of gas adsorbed, x per unit mass of adsorbed, m was measured at various x pressures p. A graph between `log  "x"/"m"` and log p gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of `"x"/"m"` at a pressure of 4 atm is ______.

[Given log 3 = 0.4771]

Adsorption of a gas follows Freundlich adsorption isotherm. x is the mass of the gas adsorbed on mass m of the adsorbent. The x plot of log `x/m` versus log p is shown in the given graph. `x/m` is proportional to ______.

For silver Cp (J K^-1 mol^-1) = 23 + 0.01 T. If the temperature (T) of 3 moles of silver is raised from 300 K to 1000 K at 1 atom pressure, the value of ΔH will be close to ______.

\[\ce{Y <-[\Delta, 205°C] CaSO4.2H2O ->[\Delta, 120°C] X}\]

X and Y are respectively:

Alkylamine dissolve in hydrochloric acid to form alkylammonium chloride. The nitrogen in the latter salt is ______.

A 0.5 g sample of an iron-containing mineral mainly in the form of CuFeS₂ was reduced suitably to convert all the ferric iron into ferrous form and was obtained as a solution. In the absence of any interfering matter, the solution required 42 ml of 0.01 M K₂Cr₂O₇ solution for titration. The percentage of CuFeS₂ in the mineral is ______%.
(Cu = 63.5, Fe = 55.8, S = 32, O = 16)

Calculate the work involved when 1 mol of an ideal gas is compressed reversibly from 1.00 bar to 5.00 bar at a constant temperature of 300 K ______.

What would be the main product when propene reacts with HBr in presence of benzoyl peroxide?

The net work done in the following cycle for one mol of an ideal gas will be ______ (in calorie), where in process BC, PT = constant. (R = 2 cal/mol-K).

1 mole of an ideal monoatomic gas initially at 1 atm and 300 K experiences a process by which pressure is doubled. The nature of the process is unspecified but 6. ΔU = 900 cal. The final volume will be ______ l.

[Given : R = 0.08 atm lit. I mol/K = 2 Cal/K/mol J]

1 mole of an ideal monoatomic gas initially at 1 atm and 300 K experiences a process by which pressure is doubled. The nature of the process is unspecified but 6. ΔU = 900 cal. The final volume will be ______ l.

[Given : R = 0.08 atm lit. I mol/K = 2 Cal/K/mol J]

For Freundlich adsorption isotherm, a plot of log (x/m) (Y-axis) and log p (x-axis) gives a straight line. The intercept and slope for the line is 0.4771 and 2, respectively. The mass of gas, adsorbed per gram of adsorbent if the initial pressure is 0.04 atm, is ______ × 10^-4 g. (log 3 = 0.4771)

Find the work done when 2 moles of hydrogen expand isothermally from 15 to 50 litres against a constant pressure of 1 atm at 25°C.

Arrange the following in increasing order of their covalent character.

(A) CaF₂

(B) CaCl₂

(C) CaBr₂

(D) CaI₂

Choose the correct answer from the options given below.

Lattice energy of an ionic compound depends upon ______.

A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in NaHC0 3 solution. Compound 'X' also gives violet colour with neutral FeCI3 solution. The compound 'X' is:

The interaction energy of London forces between two particles is proportional to r^x, where r is the distance between the particles. The value of x is ______.

Match List - I with List - II.

	List I		List II
(A)		(I)	Br2 in CS2
(B)		(II)	Na2Cr2O7/H2SO4
(C)		(III)	Zn
(D)		(IV)	CHCl3/NaOH

Choose the correct answer from the options given below:

The predominant intermolecular forces present in ethyl acetate, a liquid, are ______.

Five moles of an ideal gas at 1 bar and 298 K is expanded into the vacuum to double the volume. The work done is ______.