Kankor 14-Pass common mistakes
Kankor 14-Pass · Understand the traps and how to avoid them.
Converting units carelessly in physics numericals - e.g. plugging 20 cm into a formula that requires metres, or leaving grams in a force calculation - and reporting the answer in the wrong unit.
Kankor physics items often state data in cm, g, or minutes while the standard formula (F=ma, v=u+at, W=Fs) assumes SI base units; candidates under time pressure substitute numbers directly and never convert.
What to do instead
Before substituting, write each given quantity with its unit and convert to SI (cm→m, g→kg, min→s) in a dedicated line; after solving, check the answer's unit by dimensional analysis.
Mixing up the sign/direction conventions in kinematics and Newton's-law problems, e.g. treating deceleration as positive acceleration or forgetting that friction opposes motion.
Candidates memorise formulas without a consistent sign convention, so a car braking or a block on an incline gets a wrong-sign acceleration and a wrong final answer.
What to do instead
Adopt one rule every time: choose a positive direction, write it down, and assign signs to u, v, a, F accordingly; test the result against physical sense (a braking object must slow down).
Balancing chemical equations by changing subscripts of formulas (writing H2O as H2O2 or altering Fe2O3) instead of placing coefficients in front.
Students confuse subscripts (fixed by the compound's identity) with coefficients (adjustable for balancing), and under exam pressure 'fix' the count by editing the formula.
What to do instead
Never touch subscripts; balance only with coefficients. Count each element on both sides line by line, and finish by re-counting every atom including O and H.
Applying the mole concept with the wrong molar mass or forgetting Avogadro's number when converting between mass, moles, and particles.
Molar masses are recalled approximately or a compound's formula is misread, and the step 'moles = mass/molar mass' is chained incorrectly to particle counts.
What to do instead
Write the formula, compute molar mass from atomic masses explicitly, then use a three-box map (mass ↔ moles ↔ particles) with 6.02×10^23 marked on the moles–particles arrow.
Confusing mitosis and meiosis - number of divisions, daughter-cell count, and chromosome number - in genetics questions.
The two processes share vocabulary (prophase, metaphase) and candidates rely on vague memory rather than a clear comparison, so they swap 2 diploid cells for 4 haploid cells.
What to do instead
Memorise one comparison line: mitosis = 1 division → 2 diploid identical cells; meiosis = 2 divisions → 4 haploid varied gametes. Redraw the chromosome number at each stage for one example.
Solving algebraic equations by moving terms across the equals sign without changing sign, or multiplying/dividing an inequality by a negative without flipping the inequality sign.
The shortcut 'move it to the other side' is learned without the underlying balance principle, so sign changes are applied inconsistently, especially with inequalities.
What to do instead
Perform the same operation on both sides explicitly for the first few steps; circle any negative multiplier and immediately reverse the inequality symbol as a fixed ritual.
Misreading a geometry problem's given conditions - using the wrong side as the hypotenuse, applying the area formula where perimeter is asked, or ignoring that a triangle is isosceles.
Candidates skim the stem and jump to a familiar formula, and diagrams are assumed rather than read, so the wrong quantity or wrong relation is used.
What to do instead
Underline every given fact and circle the exact quantity asked (area vs perimeter, length vs angle) before choosing a formula; restate the problem in one sentence in your own words.
Placing historical events, dynasties, or dates in the wrong century or sequence - e.g. mixing the Ghaznavid and Ghurid periods or misordering 20th-century constitutional milestones.
Dates are memorised as isolated numbers without a timeline, so similar-sounding dynasties and reform periods collapse into each other.
What to do instead
Build and redraw a single timeline from memory (dynasty/period → key event → century) and place each fact on it; practise ordering five events chronologically rather than recalling bare dates.
Confusing geographic terms and locations - climate vs weather, latitude vs longitude effects, or misplacing rivers, mountain ranges, and neighbouring countries on a mental map.
Definitions are learned as slogans and map knowledge is passive (recognising a map) rather than active (drawing one), so similar terms and relative positions blur.
What to do instead
For each term write a one-line contrast (climate = long-term pattern, weather = short-term state) and practise sketching a blank regional map labelling rivers, ranges, and borders from memory.
Answering Islamic Studies items from general impression rather than the precise ruling, term, or source - e.g. mixing the categories of obligatory (wajib/fard) and recommended (sunnah) acts, or misattributing a verse to the wrong surah.
Everyday familiarity with religious vocabulary creates false confidence; candidates recognise a term but do not recall its exact definition, condition, or context.
What to do instead
Study by definition cards: term → precise meaning → one concrete example or condition. For Qur'anic and historical facts, always attach the specific surah/context, and self-test by covering the definition, not just the word.