List of practice Questions

According to Bohr’s theory, the angular momentum for an electron of third orbit is?

In the sequence of reactions, the final product (IV) is?

2.76 g of silver carbonate on being strongly heated yields a residue weighing?

The final product (IV) in the sequence of reactions is?

Following process is known as?

An \( f \)-shell containing 6 unpaired electrons can exchange?

The standard molar heat of formation of ethane, CO2, and water (\( \Delta H_f \)) are respectively -21.1, -94.1, and -68.3 kcal. The standard molar heat of combustion of ethane will be?

The solubility product of \( \text{Ag}_2 \text{CrO}_4 \) is \( 3.2 \times 10^{-12} \). What is the concentration of \( \text{CrO}_4^{2-} \) ions in that solution?

The equivalent conductivity of a solution containing 2.54g of CuSO4 per liter is 91.0 \( \Omega^{-1} \, \text{cm}^2 \). The conductivity would be?

The half-life of two samples are 0.1 and 0.8 S. Their respective concentration are 400 and 0.5. The order of the reaction is?

Which sequence of reactions shows correct chemical relation between sodium and its compounds?

In the reaction, \[ 8Al + 3Fe_2O_3 \longrightarrow 4Al_2O_3 + 9Fe \] the number of electrons transferred from the reductant to the oxidant is?

MnO4- + 8H+ + 5e- → Mn2+ + 4H2O; \( E^\circ = 1.51 \, \text{V} \) MnO4- + 4H+ + 2e- → Mn2+ + 2H2O; \( E^\circ = 1.23 \, \text{V} \)

A metal has bcc structure and the edge length of its unit cell is 3.04 Å. The volume of the unit cell in cm³ will be?

Among [Fe(H2O)6]3+, [Fe(CN)6]3-, [Fe(CO)6]3- species, the hybridization state of the Fe atom is?

Which of the following hydrogen bonds are strongest in vapour phase?

The rate constant for forward reaction and backward reaction of hydrolysis of ester are \( 1.1 \times 10^{-2} \) and \( 1.5 \times 10^{-3} \) per minute respectively. Equilibrium constant for the reaction is?

A 1.0 M NaOH reacts with 20 mL of HCl solution for complete neutralisation. The molarity of HCl solution is?

The volume strength of 1.5 N H2O2 solution is?

A circular current carrying coil has a radius \( R \). The distance from the center of the coil on the axis, where the magnetic induction will be \( \frac{1}{8} \) to its value at the center of the coil is?

The incorrect statement regarding the lines of force of the magnetic field \( B \) is?

Two coils have a mutual inductance of 0.55 H. The current changes in the first coil according to the equation \( I = I_0 \sin \omega t \), where \( I_0 = 10 \, A \) and \( \omega = 100 \, \text{rad/s} \). The maximum value of emf in the second coil is?

An L-C-R circuit contains \( R = 50 \, \Omega \), \( L = 1 \, \text{mH} \), and \( C = 0.1 \, \mu\text{F} \). The impedance of the circuit will be minimum for a frequency of?

An eye can detect \( 5 \times 10^4 \) photons per square meter per second of green light ( \( \lambda = 500 \, \text{nm} \)) while the ear can detect \( 10^{-12} \, \text{W/m}^2 \). The factor by which the eye is more sensitive as a power detector than ear is close to?

The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate solution gives a black precipitate. The organic compound contains?