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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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11

A nitrogen nucleus bombarded with an alpha particle produces an oxygen nucleus and a proton. The nuclear reaction for this process is \(^4_2H + ^{14}_2N \to ^{17}_{8}O + ^1_1H + Q\). Which of the following statements about the reaction is not correct?

  • A. the bombardment results into a nucleus with greater proton number
  • B. it is an induced nuclear reaction
  • C. it is a natural radioactive decay
  • D. the sum of the final nucleon numbers
View Answer & Discuss (8) WAEC 2001
12

Nuclear fission is preferred to nuclear fusion in the generation of energy because?

  • A. very high temperature are required for fusion
  • B. the raw material of fusion are not easily obtained
  • C. energy obtained from fusion is relatively smaller
  • D. the by product of fusion are very dangerous
View Answer & Discuss (6) WAEC 2003
13

The mode of transference of heat which does not require any material medium is

  • A. conduction
  • B. convection
  • C. evaporation
  • D. radiation
  • E. transmission
View Answer & Discuss (1) NECO 2003
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
14

Determine the value of x from the nuclear reaction below,

\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy

  • A. 220
  • B. 222
  • C. 224
  • D. 226
  • E. 228
View Answer & Discuss (2) NECO 2009
15

A black body radiates maximum energy when its surface temperature T and the corresponding wavelength \(\lambda\)max are related by the equation \(\lambda\)max T = constant. Given the values of the constant and surface temperature as 2.9 x 10\(^{-3}\) mK and 57°C respectively; Calculate the frequency of the energy radiated.

View Answer & Discuss (3) WAEC 2018
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208