UNIBEN General Paper 2020/2021 Past Questions

The decreasing order of the relative strength fo these acids p. HNO₃q. HBr r. HCIO₄ and o. H₂ is .......

the production of fruit juice at a free energy change of -345KJ/mol nd equilibrium constant of 3.66 × 10¹² occurred at a temperature of ...... (gas constant = 8.314j/k/mol)

Oxidation reaction is the process of the following except .......

If the free energy change ΔG of an equilibrium reaction is zero, the reaction will ........

Which of the following elements is a d-block element?

Which of the following factors would not affect the solubility of a gas?

Kerosine is commonly used to remove the red colour stain of palm oil from clothes because it

A solution which has more of solute, at a given temperature than that of saturated solution is called a________

Chalk powder in water is an example of_________

Nitrogen in soil is an example for_______

Autecology is defined as the study of interrelationship of

Autotrophs are also described as .............

If three 30cm lengths of glass tubing are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week the level of water will be

In a community bacteria and fungi are referred to as ...........

Puddles, Ponds, Rivers, Seas and Oceans are grouped together as ...........

A step in the movement of energy through an ecosystem is a description that best fits the term

Which of the following substances is not transported by the blood in a mammal?

Xerophthalmia is an inflammation of

To plants, the structure that performs a similar function with the testis in mammals is the

The bacteria types that are arranged in chains are the

The fifth term of the sequence 1, 21, 51, 91, ... is

Let x = (a,b,c,d). which statement is correct?

The distance from the points (3, -2) to the line 3y+2x+5=0 is

Evaluate $$\frac{x^2 - 2}{2x^2 + x - 3}$$ when x = -1

Evaluate the integral $$\int(3x^2 - 4x - 1)dx$$

A ball bearing is gently released from rest and allowed to fall through a viscous fluid. Which of the following statements about the motion is correct?

When the vapour of a substance is in equilibnum with its own liquid it is said to be

A man standing between two parallel mirrors in a barber shop will see the following number of his own image

If the wave length of a wave travelling with a velocity of 360 m/s is 60m, the period of the wave is

A micrometre is defined as one millionth of a millimeter. A length of 12 micrometres may be represented as

A concave lens of focal length 20cm forms an image 1/2 the size of the object. The object distance is

The quality of sound depends on

A student with a sight defect has a least distance of distinct vision of 150 cm. For him to read a material placed at a distance of 25 cm, what is the focal length of the glasses he should wear?

A dynamo primarily converts

Three capacitors 2μF, 3μF, and 6μF are connected in series. If the pd across the system is 12v, the pd accross the 6μF capacitor is