UNIBEN General Paper 2018/2019 Past Questions

Find the value of x for which the function f(x) = 3x² - x - 6 is minimum

Find the inverse of the matrix $$\begin{pmatrix}3 & 3 \\ 5 & 6 \end{pmatrix}$$

What is the solution of $${\frac{x - 5}{x + 3} \lt -1}$$?

Find y, if $$\begin{pmatrix}5 & -6 \\ 2 & -7 \end{pmatrix}\begin{pmatrix}x\\ y \end{pmatrix} =\begin{pmatrix}7\\ -11 \end{pmatrix}$$

P varies directly as Q and inversely as R. When Q = 36 and R = 16, P = 27. Find the relation between P, Q and R.

If $$\begin{vmatrix}-x & 12 \\ -1 & 4 \end{vmatrix} =-12$$, find x.

Simplify 4√27 + 5√12 - 3√75

How many sides has a regular polygon whose interior angles is 135° each?

y varies directly s w². When y = 8, w = 2, find y when w = 3

If gt² - k - w = 0, make g the subject of the formula.

a vibrating diving board has a frequency of 25oHz. what is the angular velocity?

given that the gravitational constant is 7×10^-11Nm²Kg^-2, what is the force of attraction between 10⁶kg mass of copper hanging one meter away from a 10³kg mass or iron?

the area-under a force distance graph represents

an object of 50kg is released from height of 2m. find the kinetic energy just before it strikes the ground

the correct unit of energy density is

which of the following compounds would not produce oxygen on heating

160cm³ of distilled water is added to 40cm³ of 0.5moldm³ H₂SO₄ solution. what is the concentration of the diluted solution

which of the following is not a physical property

which of the following statements is true when equilibrium is attained in reversible reaction

After reflection from the concave mirror, rays of light from the sun converges

The angle at which a projectile must be fired to cover maximum range is

A length of wire has a frequency of 255 Hz when stretched by a force of 225 N. If the force increases to 324 N, what is the new frequency of vibration?

I. Rays of light travel from a less dense medium to a denser medium. II. The Angle of incidence is greater than ciritical angle. III. Rays of light travel from a denser medium to a less dense medium. Which of the statements above are conditions for total internal reflection to occur?

The characteristic of a vibration that determines its intensity is the

Which of the following pairs of gases are pollutants from car exhaust?

For a given solute, the concentration of its saturated solution in different solvents are

The number of oxygen molecules present in 16g of the gas is [Avogadro's number = 6.02 &imes; 10²³]

Consider the reaction represented by the equation: $${N_2O_{4(g)} \equiv 2NO_{2(g)}}$$; ΔH = +x kJmol^-1. What happens when the temperature is reduced at equilibrium?

Which of the following gases will diffuse most rapidly?[H = 1.0; C = 12, O = 16, S = 32, Cl = 35.5]