The magnetic susceptibility of a paramagnetic material decreases with increasing temperature.

Increasing temperature generally decreases the magnetism of ferromagnetic materials, as thermal agitation disrupts the alignment of magnetic domains.

The effect of temperature on resistance depends on the material; for most conductors, resistance increases with temperature.

For most conductors, resistance increases with temperature due to increased lattice vibrations that impede electron flow.

The resistance of most conductive materials increases with temperature due to increased atomic vibrations that impede electron flow.

For most solid solutes, solubility in liquids increases with temperature due to increased kinetic energy of the molecules.

For most solid solutes, solubility increases with an increase in temperature.

The speed of sound in air increases with an increase in temperature.

As temperature increases, the kinetic energy of the molecules increases, leading to a decrease in cohesive forces and thus a decrease in surface tension.

Surface tension decreases with an increase in temperature due to increased molecular motion.

According to Raoult's Law, the vapor pressure of a solvent increases with an increase in temperature.

The viscosity of a liquid generally decreases with an increase in temperature, making it flow more easily.

For most liquids, viscosity decreases with an increase in temperature due to increased molecular motion.

The +M effect stabilizes the carbocation by donating electron density through resonance.

The -I effect increases acidity by stabilizing the negative charge on the conjugate base.

Electron-withdrawing groups (-I) increase the acidity of compounds by stabilizing the negative charge on the conjugate base.

The -M effect can stabilize a carbocation by delocalizing the positive charge.

-M groups destabilize carbocations by withdrawing electron density through resonance.

The author's tone encourages readers to reflect critically on the issues discussed, making option 2 the correct answer.

The use of rhetorical questions is intended to provoke thought and engagement from the reader, encouraging them to reflect on the issues presented.

An external torque changes the angular momentum of the system.

Fringe separation is directly proportional to the distance from the slits to the screen. Increasing this distance increases the fringe separation.

Increasing the wavelength increases the fringe width, as fringe width β is directly proportional to the wavelength.

Adding a resistor in parallel decreases the total resistance, which increases the total current according to Ohm's law.

Adding more resistors in series increases the total resistance, as total resistance is the sum of individual resistances.

Removing a resistor from a series circuit decreases the total resistance since the sum of the remaining resistances is less.

Adding a resistor in parallel decreases the total resistance of the circuit.

Adding resistors in parallel decreases the total resistance.

Adding more resistors in parallel decreases the total resistance of the circuit.

In series, the total resistance increases as more resistors are added.