Options (Choose One)

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Materials

Subtopic

Materials under Options (Choose One) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

1.
$What type of polymerization occurs when ethene molecules join together to form polyethene?$
A. $Condensation polymerization$
B. $Addition polymerization$
C. $Substitution polymerization$
D. $Elimination polymerization$
2.
$Which property of liquid crystals makes them useful in display screens (LCDs)?$
A. $They are always solid.$
B. $Their orientation can be changed by an electric field, affecting light transmission.$
C. $They conduct electricity better than metals.$
D. $They are completely opaque to all light.$
3.
$Which of the following is a potential risk associated with nanoparticles in the environment?$
A. $They are too large to be inhaled.$
B. $They may be able to cross biological membranes due to their small size.$
C. $They always turn into oxygen gas.$
D. $They have no surface area.$

Download the worksheet for Options (Choose One) - Materials to practice offline. It includes additional chapter-level practice questions.

Biochemistry

Subtopic

Biochemistry under Options (Choose One) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following is true about the hydrolysis of starch?$
A. $It requires energy and releases water$
B. $It produces amino acids$
C. $It breaks down the polysaccharide into glucose monomers$
D. $It only occurs in the presence of sunlight$
2.
$Which molecule is released as a byproduct when two amino acids join together via a condensation reaction?$
A. $O_2$
B. $CO_2$
C. $H_2O$
D. $NH_3$
3.
$What defines the tertiary structure of a protein?$
A. $The linear sequence of amino acids$
B. $Local folding into helices or sheets$
C. $The overall three-dimensional shape of a single polypeptide chain$
D. $The interaction between different polypeptide chains$

Download the worksheet for Options (Choose One) - Biochemistry to practice offline. It includes additional chapter-level practice questions.

Energy

Subtopic

Energy under Options (Choose One) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

1.
$What is the main component of natural gas?$
A. $Ethane$
B. $Propane$
C. $Butane$
D. $Methane$
2.
$Which isotope is commonly used as a radioactive tracer in medical imaging, having a short half-life of 6 hours?$
A. $Uranium-235$
B. $Technetium-99m$
C. $Carbon-14$
D. $Potassium-40$
3.
$What is the typical catalyst used in the transesterification of vegetable oils to produce biodiesel?$
A. $Iron powder$
B. $NaOH$
C. $Platinum wire$
D. $Manganese dioxide$

Download the worksheet for Options (Choose One) - Energy to practice offline. It includes additional chapter-level practice questions.

Medicinal chemistry

Subtopic

Medicinal chemistry under Options (Choose One) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

1.
$In nuclear medicine, what does the term 'half-life' refer to?$
A. $The time taken for the mass of a drug to double$
B. $The time taken for half the radioactive atoms in a sample to decay$
C. $The time taken for a drug to reach the liver$
D. $The time it takes for a patient to recover halfway$
2.
$Which statement about viruses is true?$
A. $They consist of a cell wall and a nucleus$
B. $They can only reproduce inside a host cell$
C. $They are killed by penicillin$
D. $They are multicellular organisms$
3.
$What is the side effect of using aluminum-containing antacids?$
A. $Diarrhea$
B. $Constipation$
C. $Increased appetite$
D. $High blood sugar$

Download the worksheet for Options (Choose One) - Medicinal chemistry to practice offline. It includes additional chapter-level practice questions.

Options (Choose One) - Grade 12 Chemistry (IB) | Krit.club