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Chemistry 1994 JAMB Past Questions

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6
For a gas, the relative molecular mass is equal to 2Y. What is Y?
  • A. The mas of the gas
  • B. The vapour density of the gas
  • C. The volume of the gas
  • D. The temperature of the gas
View Answer & Discuss (1) JAMB 1994
7
The densities of two gases, X and Y, are 0.5 g dm-3 and 2.0 dm-3 respectively.
What is the rate of diffusion of X relative to Y?
  • A. 0.1
  • B. 0.5
  • C. 2.0
  • D. 4.0
View Answer & Discuss (10) JAMB 1994
8
The shape of ammonia molecule is?
  • A. trigonal planar
  • B. octahedral
  • C. square planar
  • D. tetrahedral
View Answer & Discuss (11) JAMB 1994
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO offline past questions - All questions, answers & explanations in one app 25712
Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
9

An increase in temperature causes an increase in the pressure of a gas because?

  • A. it decreases the number of collision between the molecules
  • B. the molecules of the gas bombard the walls of the container more frequently
  • C. it increases the number of collision between the molecules
  • D. it causes the molecules to combine
View Answer & Discuss (6) JAMB 1994
10
The number of electrons in the valence shell of an element of atomic number 14 is?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (3) JAMB 1994
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Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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