How many grammes of bromine will be required to completely react with 10 grammes of propyne?
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UNIBEN Engineering and Physical Sciences Post UTME General Paper Past Questions
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For carbonyl compounds that are aldehydes or ketones, the characteristic general reaction at the carbonyl group is
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Which of the following substances is NOT a homogeneous mixture?
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Assume all gas volumes are compared at the same temperature and pressure using the ideal-gas volume-ratio model. What is the minimum volume of oxygen needed for complete combustion of a mixture of 10 cm\(^3\) of CO and 1…
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One of the following readings represent the measurement of the length of a metal rod using verniercalipers. Taking the reading accuracy into consideration, the most likely one is
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A herdsman yelling out to a fellow herdsman heard his voice reflected by a cliff 4s later. What is the velocity of sound in air if the cliff is 680 m away?
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Which of these is the correct expression for force experienced by a charge undergoing motion?
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A working electric motor takes a steady direct current of 1.5 A when the potential difference across it is 250 V. If its efficiency is 80%, what is its useful power output?
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Three resistors \(2\Omega\), \(3\Omega\) and \(x\Omega\) are connected in parallel. If the total resistance of the connection is \(0.5\Omega\), find the value of the unknown resistor.
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Three resistors 2\(\Omega\), 3\(\Omega\) and 4\(\Omega\) are connected in parallel to a voltage supply of 5V. Calculate the current in the 3\(\Omega\) resistor.
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Which of the following is correct about a capacitor connected to an A.C. source?
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Which of the following are produced after a nuclear fusion process?I. One heavy nucleus II. Neutrons III. Proton IV. Energy
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The preferential discharge of sodium during the electrolysis of brine using mercury as cathode is due to one of the following
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The oxidizing agent in the reaction H\(_2\)S(g) + Br\(_2\)(g) \(\rightarrow\) 2HBr(g) + S(s) is?
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Which of the following substances is not a polymer?
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Which is the function of silica SiO\(2\) in the equation shown? CaO + SiO\(_2\) \(\rightarrow\) CaSiO\(_3\)
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Which of the following acids is monobasic
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A river develops an oily surface film after an accident involving a fuel tanker. Which of the following is the most direct cause?
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To determine the solubility of a salt in the laboratory, you need a/an
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15g of water dissolves 3.5g of sodium chloride at 25°C. What is the solubility of the sodium chloride at that temperature?[Na = 23, Cl = 35.5]
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