ORIGINAL WRITTEN REHEARSAL
BUET Model Test for Exam
Choose a subject or the available combined paper. The 30- and 90-minute timers are practice options, not a claim about the institution’s current format. These original questions are not past papers. Answers stay in this browser; no school grade, coin balance or enrolment changes.
Set 1 of 1 available paper set.
5 written questions: 3 can be checked against the answer key; 2 need a guardian or subject teacher to review. Architecture drawing is an optional separate paper.
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Work on paper and enter the requested answer. Explain reasoning in the longer response boxes. Keep your work if you want a teacher to review it.
Use CaCO3 → CaO + CO2, molar mass CaCO3 = 100 g/mol and, for the gas calculation only, ideal molar volume = 24 dm³/mol at the stated conditions.
Physical, inorganic and organic chemistry
12
0.5 mol×24=12.
Physical, inorganic and organic chemistry
3
−log10(10^-3)=3.
Physical, inorganic and organic chemistry
1
Its two carbon atoms share one double bond.
Physical, inorganic and organic chemistry
It changes rates of both directions without changing the equilibrium constant.
Distinguish speed from equilibrium composition.
Physical, inorganic and organic chemistry
12/16×100=75%; three quarters of the theoretical mass was recovered under the stated case.
Define the numerator and denominator and note possible recovery losses.
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