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🇵🇰 DPT Admission Test · flashcards
DPT Admission Test Chemistry Flashcards
50 question-and-answer cards covering Chemistry as it is examined in DPT Admission Test. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Chemistry deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
What is the hybridization, geometry, and bond angle of the carbon atoms in ethene (C2H4)?
sp2 hybridized, trigonal planar geometry, bond angle ~120°, with one sigma and one pi bond between the carbons.
Explain the bent shape and ~104.5° bond angle of the water molecule.
Oxygen is sp3 hybridized with two lone pairs; lone pair–bond pair repulsion compresses the H–O–H angle from 109.5° to ~104.5°.
According to VSEPR theory, what determines molecular geometry?
Electron pairs around the central atom arrange to minimize repulsion; lone pairs repel more strongly than bonding pairs, altering bond angles.
What is hydrogen bonding and which three elements bonded to hydrogen produce it?
A strong dipole–dipole attraction between H bonded to a highly electronegative atom (F, O, or N) and a lone pair on F, O, or N of another molecule.
List the intermolecular forces from weakest to strongest.
London dispersion forces < dipole–dipole forces < hydrogen bonding (all weaker than covalent/ionic bonds).
Why does water have an unusually high boiling point compared to H2S?
Water forms extensive hydrogen bonds (O is highly electronegative), whereas H2S has only weak dipole–dipole/dispersion forces.
What are London dispersion forces and which factor increases their strength?
Weak attractions from temporary instantaneous dipoles in all molecules; strength increases with molecular size/number of electrons (polarizability).
State Boyle's Law and give its equation.
At constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure: P1V1 = P2V2 (PV = constant).
State Charles's Law and give its equation.
At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute (Kelvin) temperature: V1/T1 = V2/T2.
Write the ideal gas equation and define each term.
PV = nRT, where P = pressure, V = volume, n = moles, R = gas constant (0.0821 L·atm·mol⁻¹·K⁻¹), and T = absolute temperature in Kelvin.
State Avogadro's Law.
Equal volumes of all gases at the same temperature and pressure contain equal numbers of molecules; V ∝ n at constant T and P.
State Dalton's Law of Partial Pressures.
The total pressure of a gas mixture equals the sum of the partial pressures of its component gases: P_total = P1 + P2 + P3 + …
State Graham's Law of diffusion.
The rate of diffusion/effusion of a gas is inversely proportional to the square root of its molar mass: rate ∝ 1/√M.
Define vapor pressure and explain how it relates to a liquid's boiling point.
Pressure exerted by a vapor in equilibrium with its liquid; a liquid boils when its vapor pressure equals the external (atmospheric) pressure.
What is the difference between evaporation and boiling?
Evaporation is surface vaporization occurring at any temperature; boiling is bulk vaporization throughout the liquid when vapor pressure equals atmospheric pressure.
What is the difference between crystalline and amorphous solids?
Crystalline solids have a long-range ordered (regular) arrangement and sharp melting points; amorphous solids lack long-range order and soften over a range of temperatures.
Name the four main types of crystalline solids based on their constituent particles.
Ionic, covalent (network), molecular, and metallic solids.
What is a unit cell, and how many atoms are in a body-centered cubic (BCC) unit cell?
The smallest repeating structural unit of a crystal lattice; a BCC cell contains 2 atoms (8 corners × 1/8 + 1 center).
State the Law of Mass Action and write the equilibrium constant expression for aA + bB ⇌ cC + dD.
Reaction rate is proportional to the product of active masses (molar concentrations) of reactants. Kc = [C]^c[D]^d / [A]^a[B]^b.
State Le Chatelier's Principle.
If a system at equilibrium is disturbed by a change in concentration, pressure, or temperature, the equilibrium shifts to counteract that change.
For an exothermic reaction at equilibrium, how does increasing temperature affect the equilibrium position?
It shifts the equilibrium backward (toward reactants), decreasing the yield of products and lowering Kc.
Define pH and pOH, and state the relationship between them at 25°C.
pH = -log[H⁺] and pOH = -log[OH⁻]; at 25°C, pH + pOH = 14 (since Kw = [H⁺][OH⁻] = 1 × 10⁻¹⁴).
Define enthalpy of a reaction and state Hess's Law.
Enthalpy (ΔH) is the heat change at constant pressure; Hess's Law states the total enthalpy change of a reaction is independent of the pathway taken (depends only on initial and final states).
Define the rate of a reaction and list four main factors that affect it.
Change in concentration of reactant or product per unit time. Factors: concentration, temperature, surface area, and presence of a catalyst (also pressure for gases).
What this deck covers
The Chemistry deck follows the DPT Admission Test Chemistry syllabus — 11 chapters and 34 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 4.5 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 131 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Chemistry flashcards FAQ
How many Chemistry flashcards are in this DPT Admission Test deck?
50 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these DPT Admission Test flashcards free?
Yes. The preview here is free to read with no signup, and the full 50-card deck is free inside the Examius app.
What do the Chemistry cards cover?
They follow the DPT Admission Test Chemistry syllabus — 11 chapters and 34 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.