Past Questions And Answers
The most important physical factor which affects an organism living in the intertidal zone of the seashore is
- A. pH
- B. salinity
- C. wave action
- D. temperature
Express \(\frac{1}{x^{3}-1}\) in partial fractions
- A. \(\frac{1}{3}(\frac{1}{x - 1} - \frac{(x + 2)}{x^{2} + x + 1})\)
- B. \(\frac{1}{3}(\frac{1}{x - 1} - \frac{x - 2}{x^{2} + x + 1})\)
- C. \(\frac{1}{3}(\frac{1}{x - 1} - \frac{(x - 2)}{x^{2} + x + 1})\)
- D. \(\frac{1}{3}(\frac{1}{x - 1} - \frac{(x - 1)}{x^{2} - x - 1})\)
five hundred naria monthly is allowed on an imprest system. The following transactions took place.
Period1:
Cash advanced to petty cashier......N500
Petty cashier paid out: stamp.......N200
Newspaper...........................N250
Period 2:
Cash to petty cashier...............N450
Cashier paid for writing materials..N350
What was the balance of cash with the petty cashier at the end of period 1?
- A. N50
- B. N200
- C. N300
- D. N450
The part of the brain that controls heart beat and breathing is the
- A. olfactory lobe
- B. cerebellum
- C. cerebral hemisphere
- D. medulla oblongata
If a society is operating on the production possibility curve, this implies that the resources are?
- A. fully and efficiently utilized
- B. fully but inefficiently utilized
- C. efficiently but not fully utilized
- D. abundant
Which of the following is a feature of the population pyramid of a developing country?
- A. long lifespan
- B. low birth rate
- C. low death rate
- D. short lifespan
The metal that will react with water only in the form of steam to liberate hydrogen gas is
- A) calcium
- B) aluminium
- C) iron
- D) zinc
A\(_{(g)}\) + 2B\(_{(g)}\) \(\rightarrow\) C\(_{(g)}\)
In the reaction represented by the equation above, the rate of appearance of C is found experimentally to be independent of the concentration of A and to increase four folds when the concentration of B is doubled. The rate law for the reaction is
- A)Rate = \(K[A]^0[B]^4\)
- B)Rate = \(K[A]^0[B]^2\)
- C)Rate = \(K[A][B]^2\)
- D)Rate = \(K[A]^2[B]^0\)
Digestion in ruminants is mainly?
- A. enzymatic
- B. microbial
- C. mastication and enzymatic
- D. microbial and enzymatic
Thermal energy added or removed from a substance that changes the state of the substance is called
- A. latent heat
- B. heat of reaction
- C. calorimetry
- D. specific heat