Past Questions And Answers

Note: You Can Select Post UTME Schools Name Below The Exam Year.
13121

(a)In the laboratory preparation of dry chlorine gas, state the: I. reagents used; II. drying agent III. the mode of collection.

(i) Write the equation for the preparation of chlorine gas. (iii) Write an equation to show how chlorine reacts with hot concentrated NaOH.

(b)i). Name the main raw materials used for the extraction of iron in the blast furnace. (ii) Write the equations of the reactions taking place in the blast furnace.

(iii) What is the name given to the iron obtained directly from the blast furnace? (iv) State why the iron named in 4(b)(iii) have a relatively low melting point?

(c) The following equation represents one of the reaction steps involved in the contact process: 2SO\(_2\) + O\(_2\)? 2SO\(_3\)ΔH = -395.7 kJ mo-l

(i) Why is the SO\(_3\) produced during the reaction not dissolved directly in water to form H\(_2\)SO\(_4\)? (ii) Why is the H\(_2\)SO\(_4\) regarded as a heavy chemical? (iii) State the property exhibited by tetraoxosulphate (VI) acid in each of the following reaction equations.

I. Pb(NO\(_3\))\(_2\) + H\(_2\)SO\(_4\)→ PbSO\(_4\) + 2HNO\(_3\) (d) Write a balanced chemical equation for the reaction between propanol and sodium

View Discussion (0)WAEC 2020 THEORY
13122

Which of the following plant hormone is responsible for ripening of fruits?

  • A. Gibberellins
  • B. Abscisic acid
  • C. Ethylene
  • D. Cytokinins
View Discussion (0)JAMB 2016
13123

Othello: So please your grace, my ancient;

A man he is of honesty and trust To his conveyance i assign my wife

Grace shall think

To be sent after me

(Act 1, Scene Three, Lines 279-283)

A man he is honesty and trust refers to_________

  • A. Cassio
  • B. Lodovico
  • C. Gratiano
  • D. Iago
View Discussion (0)WAEC 2017 OBJ
13124

Most farm business fail because of

  • A. death of the manager
  • B. lack of capital
  • C. labour problems
  • D. poor management
View Discussion (0)WAEC 2016 OBJ
13125

The four kings that reigned in Judah during the prophecy of Hosea were

  • A. Uzziah, Zedekiah, Jehoiakim and Hezekiah
  • B. Uzziah,Joash, Jeroboam and Hezekiah
  • C. Uzziah,Jotham, Ahaz and Hezekiah
  • D. Hezekiah,Joash,Ahab and Uzziah
View Discussion (0)JAMB 2007
13126

Which of the following factors does not control population growth? Options A) Food shortage B) Emigration C) Predation D) Abundance of foodWhich of the following factors does not control population growth?

  • A) Food shortage
  • B)Emigration
  • C) Predation
  • D) Abundance of food
View Discussion (0)POST UTME UI
13127

Read the poem below and answer the question Dillgent foot-worker legs lithe, foot loose to frantic drums and frenetic flutes Acrobat strokes swift in the air wrought masterly like a frenzied antelope Gyrating to the April music of the lush Savannah The poem is an example of a/an

  • A. lyric
  • B. ode
  • C. pastoral
  • D. ballad
View Discussion (0)WAEC 2004 OBJ
13128

Which of the following is an intangible assets of a firm?

  • A. Goodwill
  • B. Reserve
  • C. Skilled personnel
  • D. Rights issue
View Discussion (0)WAEC 2005 OBJ
13129

Catalytic hydrogenation of alkenes produces compounds with the general formula

  • A. CnH2n+1OH
  • B. CnH2n+1
  • C. CnH2n+2
  • D. Cn2n-2
View Discussion (0)WAEC 1994 OBJ
13130

Two bodies of masses 3kg and 5kg moving with velocities 2 m/s and V m/s respectively in opposite directions collide. If they move together after collision with velocity 3.5 m/s in the direction of the 5kg mass, find the value of V.

  • A. 7.8 m/s
  • B. 6.8 m/s
  • C. 5.6 m/s
  • D. 4.6 m/s
View Discussion (0)WAEC 2013 OBJ