BCECE case studies
BCECE · Put your knowledge to work in context.
BCECE is the umbrella name for the competitive entrance examinations conducted by the Bihar Combined Entrance Competitive Examination Board (BCECEB), a body constituted under the Bihar Combined Entrance Competitive Examination Act, 1995. The Board states that it conducts competitive examinations every year for admissions in various professional courses of the Medical, Engineering and Agricultural streams in institutions of the state of Bihar. The BCECE case studies are 5 cases and about 3,318 words.
1Marble Run Loop: Friction, Contact and Braking
A school physics club is building a marble run for its annual exhibition. A steel marble of mass 20 g is released from rest at height h above the bottom of a vertical circular loop of radius R = 0.40 m.
619 words, about 3 min2Choosing an Ammeter–Voltmeter Circuit for 60 Ω
A student must determine an unknown resistance R x, believed to be about 60 Ω, using a 6.0 V battery of negligible internal resistance, a moving-coil ammeter of resistance 0.50 Ω and a moving-coil voltmeter of resistance 12 kΩ. Only one set of readings can be taken before the laboratory closes, and the student plans to calculate R x as V/I from the meter readings.
654 words, about 3 min3Two-Indicator Titration of a Drain Cleaner
A quality-control analyst receives 1.200 g of a commercial drain cleaner that contains sodium hydroxide, sodium carbonate and inert filler. The solid is dissolved and made up to 250.0 mL with distilled water.
648 words, about 3 min4Half-Lives, Activation Energy and a Catalyst Claim
A student studies the first-order gas-phase isomerisation of compound X in a constant-volume flask. Starting from 0.100 mol dm⁻³ of X each time, she measures a half-life of 57.8 min at 300 K and 7.22 min at 320 K.
619 words, about 3 min5Bakery Product Mix: A Demand Constraint the Helper Missed
A small bakery makes two kinds of catering tin. Each Standard tin (x) uses 2 kg of flour and 1 kg of butter; each Deluxe tin (y) uses 1 kg of flour and 2 kg of butter.
778 words, about 4 min