BMAT 2011 Section 2 Question 22
An ore of lead contains 70% of PbS. Calculate the mass of lead that can be extracted from 478kg of the ore.[Ar : Pb = 207; S = 32] Answer:…
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11 January 2024
BMAT 2008 Section 2 Question 22
In addition to diamond and graphite, another allotrope of carbon is Buckminster fullerene, C 60, which is in the shape of a sphere. Which one of the following statements applies…
11 January 2024
BMAT 2010 Section 2 Question 22
A student prepared nitrobenzene by the following reaction.C6H6 + HNO3 → C6H5NO2 + H2Obenzene nitrobenzeneStarting with 3.9g of benzene, the student obtained 3.69g of nitrobenzene.What is the percentage yield?(Ar :…
10 January 2024
BMAT 2006 Section 2 Question 22
The energy profile for a reaction is shown below. Which of the following is a fully correct statement about this energy level profile? Answer: 22) D Let us start by…
9 January 2024
BMAT 2005 Section 2 Question 22
When a 1kg mass is dropped from the top of a building 20m high it hits the Earth with a speed of 20m/s. What would be its speed if the…
5 January 2024
BMAT 2004 Section 2 Question 22
Nuclide P decays by emission of ionising radiation to produce nuclide Q. This new nuclide then decays by further emission into nuclide R. The process is shown below, with the…
5 January 2024
BMAT 2003 Section 2 Question 22
In an a.c. generator driving a resistive load a coil is rotated slowly between the poles of amagnet. Which of the following will increase if the coil is rotated more…
4 January 2024