1. An increase in entropy can best be illustrated by

2. Which of the following gases has a characteristic pungent smell, turns red litmus paper blue and forms dense white fumes with hydrogen chloride gas?

3. CO(g) + H2 O(g) → CO2(g) + H2(g) Calculate the standard heat change of the reaction above, if the standard enthalpies of formation of CO2(g), H2O(g) and CO(g) in kJmol−1 are – 394, -242 and – 110 respectively.

4. If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?

5. The electronic configuration of Mg ²⁺ is

6. Group VII elements are

7. How many unpaired electron are in the p-orbitals of a fluorine atom?

8. The bond formed between two elements with electron configurations 1s² 2s² 2p⁶ 3s² and 1s² 2s² 2p⁴ is

9. The constituent of air that acts as a diluent is

10. The compounds CH₃CH₂CHO and CH₃COCH₃ can be distinguished from each other using

11. The rate of cooling of a heated quantity of liquid in an enclosure depends on the

12. A boy in a barber’s shop sits between two parallel mirrors. The number of images observed by him will be

13. A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?

14. A manometer is an instrument used for measuring

15. A wire of length 10m is cooled from 50oC to 10oC. Calculate the decrease in the length of the wire. [c= 3 x 10-5K-1]

16. The heat required to raise a mass of a substance through 1K is known a

17. A man walks 1km due east and then 1 km due north His displacement?

18. Which of the following does NOT describe the Image formed by a plane minor?

19. A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of the plane is 75%. The force required to pull the load up the plane is J [g=10ms−2]

20. An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

21. The energy needed to move a unit positive charge around a complete electric circuit is called the

22. For this question, choose the option opposite in meaning to the word or phrase in italics

It is important not to let mistakes blight your life

23. For this question, choose the option opposite in meaning to the word or phrase in italics

The film was shot in decrepit police station.

24. For this question, choose the option opposite in meaning to the word or phrase in italics

Jumoke is fond of carping her sister

25. For this question, choose the option opposite in meaning to the word or phrase in italics

A cup of coffee invigorated him

26. For this question, choose the option opposite in meaning to the word or phrase in italics

It is Iudicrous to suggest that she was a government agent

27. For this question, select the option that best explains the information conveyed in the question.

By refusing the offer, he has just cut down his own throat

28. For this question, select the option that best explains the information conveyed in the question.

These job cuts are just the thin end of the wedge

29. For this question, select the option that best explains the information conveyed in the question.

Jumai will do well if she was given a fair crack of the whip.

30. For this question, select the option that best explains the information conveyed in the question.

Her death was a bolt from the blue to us

31. For this question, select the option that best explains the information conveyed in the question.

The students were nosing around.

32. Choose the option nearest in meaning to the underlined word(s).

Adigun’s jokes are always puerile?

33. Choose the option nearest in meaning to the underlined word(s).

Teachers of music believes in its therapeutic effect?

34. Choose the option nearest in meaning to the underlined word(s).

The man outran his wife when they heard the eerie sound?

35. Choose the option nearest in meaning to the underlined word(s).

The manager made disparaging remarks about the retiring officer?

36. Choose the option nearest in meaning to the underlined word(s).

Tortoises need cool climates and must have places where they can hibernate?

37. Choose the option that has the same consonant sound as the one represented by the underlined letter(s).

Preached?

38. Choose the option that has a different vowel sound from the others?

39. The word in capital letters has the emphatic stress. Choose the option that best fits the expression in the sentence.

The man BOUGHT the newspaper.

40. Fill each gap with the most appropriate option from the lists provided.

The army officer said that more …… would be needed to prosecute the war?

41. The distance between the point (4, 3) and the intersection of y = 2x + 4 and y = 7 – x is

42. If 27^x+2 ÷ 9^x+1 = 3^2x, find x.

43. Convert 112₆ to a number in base three

44. Calculate the range of 20, -6, 25, 30, 21, 28, 32, 33, 34, 5, 3, 2, and 1.

45. If x₁₀ = 23₅   Find x

46. If line p = 5x + 3 is parallel to line p = wx + 5. Find the value of w.

47. Find dy/dx. If y = 3x³ + 2x² + 3x + 1

48. If a car travels 120km on 45 litres of petrol, how much petrol is needed for a journey of 600km?

49. Given U = {x: x is a positive integer less than 15} and P = {x: x is even number from 1 to 14}. Find the compliment of P.

50. Factorize k² – 2kp + p².