Saudi Secondary School Certificate · Advanced Physics and Chemistry

Electromagnetism, Quantum Physics, Organic Mechanisms and Kinetics

43 practice questions, each with the answer and an explanation.

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According to Lenz's law, what is the direction of an induced electric current in a closed conducting loop?
What is the de Broglie wavelength of an electron of mass $m$ moving with non-relativistic velocity $v$ ?
A flywheel has a moment of inertia of $4 kg \cdot m^{2}$ . What torque is required to produce an angular acceleration of $5 rad/s^{2}$ ?
What type of radioactive decay results in an atomic nucleus increasing its atomic number $Z$ by 1 while keeping its mass number $A$ unchanged?
What is the product formed by the acid-catalyzed hydration of propene ( $CH_{3} CH = CH_{2}$ )?
What is the rate law for an elementary bimolecular reaction $A + B \to Products$ ?
What is the oxidation state of manganese in potassium permanganate ( $KMnO_{4}$ )?
According to the Bohr model of the hydrogen atom, what is the relationship between the radius $r_{n}$ of an electron orbit and the principal quantum number $n$ ?
What functional group is produced when a primary alcohol is fully oxidized using an acidified potassium dichromate solution?
What is the half-life $t_{1/2}$ of a first-order chemical reaction with rate constant $k = 0.0693 s^{- 1}$ ?
In a parallel-plate capacitor with air between plates, what happens to the capacitance $C$ if the plate separation distance $d$ is halved?
Which of the following organic reactions converts an ester into a carboxylate salt and an alcohol in the presence of a strong base?
What is the magnetic force on a charge $q$ moving with velocity $v$ parallel to a uniform magnetic field $B$ ?
Which hybrid orbital set is used by carbon atoms involved in an aromatic benzene ring ( $C_{6} H_{6}$ )?
What is the critical angle $θ_{c}$ for total internal reflection when light travels from water ( $n = 1.33$ ) into air ( $n = 1.0$ )?
What is the molar solubility ( $s$ ) of silver chloride ( $AgCl$ ) in pure water if its solubility product constant $K_{sp} = 1.6 \times 1 0^{- 10}$ ?
What is the total rest energy equivalent ( $E$ ) of a particle with mass $m_{0} = 1 kg$ according to Einstein's mass-energy equivalence?
What type of isomerism exists between butane ( $CH_{3} CH_{2} CH_{2} CH_{3}$ ) and 2-methylpropane ( $CH (CH_{3})_{3}$ )?
What is the frequency of a photon whose energy is $3.313 \times 1 0^{- 19} J$ ? (Planck's constant $h = 6.626 \times 1 0^{- 34} J \cdot s$ )
In an exothermic reaction at equilibrium, what effect does decreasing the volume of the reaction container have on the gas mixture $PCl_{5} (g) ⇌ PCl_{3} (g) + Cl_{2} (g)$ …
What is the primary factor that determines the nuclear stability of light nuclides ( $Z < 20$ )?
Which of the following aqueous salt solutions is basic ( $pH > 7$ ) due to salt hydrolysis?
What is the acceleration of a $2 -kg$ mass attached to a horizontal ideal spring of spring constant $k = 50 N/m$ when displaced $0.2 m$ from equilibrium?
What product is formed when an alkyne undergoes complete catalytic hydrogenation in the presence of excess hydrogen and a nickel catalyst?
What is the energy of a photon emitted when an electron in a hydrogen atom transitions from $n = 3$ to $n = 2$ (the Balmer alpha line)?
Which of the following organic compounds will yield a silver mirror precipitate on test-tube walls when treated with Tollens' reagent?
What is the root-mean-square speed ( $v_{rms}$ ) of molecules of an ideal gas proportional to?
What is the conjugate acid of the amphoteric bicarbonate ion ( $HCO_{3}^{-}$ )?
What is the magnetic field $B$ at the center of a long solenoid with $n$ turns per meter carrying electric current $I$ ?
What type of organic functional group is present in the compound $CH_{3} CH_{2} - O - CH_{2} CH_{3}$ ?
Which quantum number determines the spatial orientation of an atomic orbital in space?
What is the wavelength of an electromagnetic wave with a frequency of $100 MHz$ travelling in a vacuum?
Which gas law explains why an aerosol spray can feels noticeably colder when gas is rapidly discharged?
What is the major organic product formed when benzene undergoes electrophilic aromatic substitution with nitric acid in the presence of concentrated sulfuric acid catalyst?
What is the nuclear particle released during the fusion of deuterium ( $_{1}^{2} H$ ) and tritium ( $_{1}^{3} H$ ) into helium ( $_{2}^{4} He$ )?
An RC circuit has a resistor $R = 200 k Ω$ and capacitor $C = 5 μ F$ . What is the time required for the capacitor voltage to discharge to $36.8%$ of its initial value?
A solid disk of mass $4 kg$ and radius $0.5 m$ ( $I = \frac{1}{2} M R^{2}$ ) rotates at $ω = 20 rad/s$ . What is its rotational kinetic energy?
A $50 -turn$ circular coil of radius $0.1 m$ is in a magnetic field increasing at $\frac{d B}{d t} = 2.0 T/s$ perpendicular to the coil. What is the induced EMF?
Using Hess's Law, what is $Δ H^{\circ}$ for $C(graphite) + 2 H_{2} (g) \to CH_{4} (g)$ given the enthalpies of combustion of C ( $- 393.5$ ), $H_{2}$ ( $- 285.8$ ), and…
What is the pH at the equivalence point when $50.0 mL$ of $0.10 M CH_{3} COOH$ ( $K_{a} = 1.8 \times 1 0^{- 5}$ ) is titrated with $0.10 M NaOH$ ?
How many stereoisomers exist for 2,3-dichlorobutane, including meso compounds?
What type of organic functional group is present in diethyl ether ( $CH_{3} CH_{2} - O - CH_{2} CH_{3}$ )?
What is the molar solubility of silver chloride ( $AgCl$ , $K_{s p} = 1.8 \times 1 0^{- 10}$ ) in a $0.10 M$ sodium chloride ( $NaCl$ ) solution?

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