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Paper 1 | Objectives | 38 Questions
NECO - BECE
Year: 2003
Level: JHS
Time:
Type: Question Paper
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Paper 1 | Objectives
Biology
Exam
2017
FREE
Geography
1993
Agricultural Science
1994
History
2002
Christian Religious Knowledge/Education/Studies (CRS/CRK/CRE)
2005
Chemistry
2003
French
2011
Mathematics (Core)
1979
1991
2013
2010
Which statement is NOT true about the composition of starch?
A. It contains only the atoms of carbon, hydrogen oxygen
B. It is a polysaccharide
C. Its empirical formula is C2H20.
D. It is made from the monomerC6H12O6.
E. The hydrogen and oxygen atoms are in the ratio 2:1.
Chlorine is used in water purification because it
A. bleaches impurities in the water
B. decolorizes water
C. destroys bacteria
D. is extremely soluble in water
E. is pleasant tasting
The number of hydrogen ions in 1.0dm6.00x103 of a 0.25 mole dm6.00x10-3 tetraoxosulphate(Vl) acid solution is [Avogadro constant = 6.0 x 1 0]
A. 1.45x1023
B. 1.50 x l023
C. 3.00x1023
D. 3.15x1023
E. 6.00x1023
B is an isotope of the element \(^{238} _{92}Ur\). The isotope B has
A. 46 protons and 119 neutrons
B. 92 protons and 92 neutrons
C. 92 protons and 146 neutrons
D. 92 protons and 238 neutrons
The boiling point of water is higher than the boiling point of ethanol because
A. the bonding in water is electrovalent (ionic) whereas the bonding in ethanol is convalent
B. the hydrogen bonding between water molecules is stronger than the hydrogen bonding between ethanol molecules
C. water has a higher lattice energy than ethanol.
D. water has hydrogen bonding between its molecules but ethanol has no hydrogen bonging between its molecules;
E. water is a better solvent than ethanol.
The reaction C2H6 → C2H + H2 is known as
A. dehydration
B. dehydrogenation
C. displacement
D. hydrogenation
E. reduction
Which is NOT a synthetic polymer?
A. nylon
B. Orion
C. Perspex
D. polystyrene
E. wool
A calcium atom and a calcium ion have the same
A. chemical properties
B. electric charge
C. electronic structure
D. number of electrons
E. number of neutrons
Preview displays only 8 out of the 38 Questions