BITSAT Mock 7

The ratio of volumes of CH₃COOCH 0.1 (N) to CH₃ COONa 0.1 (N) required to prepare a buffer solution of pH 5.74 is (given) : pKa of CH₃COOH is 4.74)

In aqueous alkaline solution, two electron reduction of HO^–₂ gives

Sulphuryl chloride (SO₂CI₂) reacts with white phosphorus (P₄) to give

An object is located 4 m from the first of two thin converging lenses of focal lengths 2m and 1m respectively. The lenses are separated by 3 m. The final image formed by the second lens is located from the source at a distance of

A ray of light is incident at an angle i on a glass slab of refractive index μ. The angle between reflected and refracted light is 90°. Then the relationship between I and μ is

The work function of metals is in the range of 2 eV to 5 eV. Find which of the following wavelength of light cannot be used for photoelectric effect.
[Consider, Planck constant = 4 x 10^–15 eVs, velocity of light = 3 x 10⁸ m/s]

A photon of wavelength 300 nm interacts with a stationary hydrogen atom in ground state. During the interaction, whole energy of the photon is transferred to the election of the atom. State which possibility is correct. (consider, Planck constant = 4 x 10^–15 eVs, velocity of light = 3 x 10⁸ m/s, ionization energy of hydrogen = 13.6 eV)

If f : [0, π/2 → R is defined as]  f(θ) =  .Then the range of f is

Let f : R → R be defined as f (x) = . The range of the function f (x) is

Let S = {(a, b, c) N x N x N : a + b + c = 21, a ≤ b ≤ c} and T = {(a, b, c) N x N x N : a, b, c are in A.P.}, where N is the set of all natural numbers. Then the number of elements in the set S ∩ T is

In a certain town, 60% of the families own a car, 30% own a house and 20% own both a car and a house. If a family is randomnly chosen, what is the probability that this family owns a car or a house but not both?

The variance of first 20 natural numbers is