List of practice Questions

If $θ_p$ is the polarizing angle for a glass plate of refractive index μ and critical angle $θ_c$, then

Which is the most suitable reagent for the following conversion ?

In Young's double-slit experiment, two different light beams of wavelengths $λ_1$ and $λ_2$ produce interference pattern with band widths $β_1$ and $β_2$ respectively. If the ratio between $β_1$ and $β_2$ is 3:2, then the ratio between and is

An object is placed at 10 cm in front of a concave mirror. If the image is at 20 cm from the mirror on the same side of the object, then the magnification produced by the mirror is

The apparent depth of a needle lying in a water beaker is found to be 9 cm. If water is replaced by a liquid of refractive index 1.5, then the apparent depth of needle will be (μ of water is 4/3)

Which of the following is not true for oxidation ?

A and C are

The reagent which can do the conversion CH₃COOH → CH₃ - CH₂ - OH is

A, B and C respectively are

K_a values for acids H₂SO₃, HNO₂, CH₃COOH and HCN are respectively 1.3 × 10^-2, 4 × 10^-4, 1.8 × 10^-5 and 4 × 10^-10, which of the above acids produces stronger conjugate base in aqueous solution ?

In set of reactions, identify D

A compound ‘A’ (C₇H₈O) is insoluble in NaHCO₃ solution but dissolve in NaOH and give a characteristic colour with neutral FeCl₃ solution. When treated with Bromine water compound ‘A’ forms the compound B with the formula C₇H₅OBr₃. ‘A’ is

An organic compound ‘X’ on treatment with PCC in dichloromethane gives the compound Y. Compound ‘Y’ reacts with I₂ and alkali to form yellow precipitate of triiodomethane. The compound X is

Fresnel distance for an aperture of size a illuminated by a parallel beam of light of wavelength λ, deciding the validity of ray optics is

For the reaction A(g) + B(g) ⇌ C(g) + D(g); ΔH = -QKJ
The equilibrium constant cannot be disturbed by

The product ‘A’ gives white precipitate when treated with bromine water. The product ‘B’ is treated with Barium hydroxide to give the product C. The compound C is heated strongly to form product D. The product D is

The major product of the following reaction is CH₂ = CH - CH₂ - OH product

The order of reactivity of the compounds C₆H₅CH₂Br, C₆H₅CH(C₆H₅)Br, C₆H₅CH(CH₃)Br and C₆H₅C(CH₃)(C₆H₅)Br in S_N² reaction is

A car manufacturing factory has two plants X and Y. Plant X manufactures 70% of cars and plant Y manufactures 30% of cars. 80% of cars at plant X and 90% of cars at plant Y are rated as standard quality. A car is chosen at random and is found to be standard quality. The probability that it has come from plant X is

Bond enthalpies of A₂, B₂ and AB are in the ratio 2 : 1 : 2. If bond enthalpy of formation of AB is -100 KJ mol^-1. The bond enthalpy of B₂ is

Two dice are thrown. If it is known that the sum of numbers on the dice was less than 6 the probability of getting a sum as 3 is

If A,B and C are three independent events such that P(A) = P(B) = P(C) = P then P(at least two of A, B, C occur) =

Given that A and B are two events such that P(B) = \(\frac{3}{5}\) P(A/B) = \(\frac{1}{2}\) and P(A ∪ B) = \(\frac{4}{5}\) then P(A) =

The shaded region is the solution set of the inequalities

The area of the quadrilateral ABCD, when A(0, 4, 1), B(2, 3, -1), C(4, 5, 0) and D(2, 6, 2) is equal to