Senior Five Chemistry Examinations End Of Term Two Examinations Pdf

[Type text] END OF TERM TWO EXAMINATIONS Uganda Advanced Certificate of Lower Education S5 CHEMISTRY Paper 1 TIME: 2 HOURS 30 MINUTES INSTRUCTIONS This paper consists of two sections A and B Answer all questions in both sections in section A and B, all answers to section A must be written in the spaces provided and a very clean provided answer sheet for section B answers Where necessary take C=12, O=16,H=1, 1Mole of a gas occupies a volume of 22.4dm3 at stp SECTION A(40 marks) June 2025 Israel launched a missile attack targeting a heavy nuclear plant that plays a vital role in Iranian government especially acting as there only source of nuclear energy and electricity which involves splitting of unstable nuclei such as uranium according to the equation below The international nuclear agencies of Iran are concerned with the consequences of the plant to the people in that area if it explodes ,U have been chosen to attend the workshop as a senior nuclear operator(NRO) to enlighten the reporters on the operation of the plant. Task a)Explain i)The category of the process involved in the plant ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………….. [Type text] ii)how the process is used in the production of electricity ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………….... ........................................................................................................................................................................ ........................................................................................................................................................................ ........................................................................................................................................................................ b)Advice them on the challenges associated with a long term use of the process and how it can be mitigated ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………………………………………….... c)they also came across a radium atom that undergoes radioactivity according to the equation below i)Help them identify the particles X,Y and Z •X……………………………………………… •Y……………………………………………… •Z……………………………………………… ii)if 0.02 moles of radium were allowed to decay for 2.4x104 years . The half life of radium is 1600 years. Calculate the number of atoms of radium left at the …