Water has a higher boiling point due to strong hydrogen bonding.

Mercury has a very high surface tension due to strong cohesive forces between its molecules, higher than that of water, ethanol, and benzene.

Mercury has the highest surface tension due to strong cohesive forces.

Glycerol is a thick liquid and has a higher viscosity compared to the others.

Benzene has a lower boiling point compared to water, ethanol, and hexane.

Benzene is a non-polar liquid, while the others are polar.

Hexane is a non-polar solvent, while the others are polar.

Ethanol can form strong hydrogen bonds due to the presence of an -OH group.

Ethanol has a lower surface tension compared to water and mercury due to its molecular structure.

Since 0.01 is 10^-2, log_10(0.01) = -2.

Using the property of logarithms that states log_a(b) - log_a(c) = log_a(b/c), we find log_2(8) - log_2(4) = log_2(8/4) = log_2(2).

Since 81 is 3^4, log_3(81) equals 4.

Logarithm of zero is undefined, hence log_5(0) is the correct answer.

The last identity is incorrect; it should be log_a(b) + log_a(c) = log_a(bc).

The Power Rule states that log_a(b^c) = c * log_a(b).

The International Date Line is at 180°, so the closest longitude is 180°.

Polaroid film is specifically designed to polarize light by allowing only light waves oscillating in a certain direction to pass through.

Rubber is an insulator and has a much higher resistivity compared to metals like copper, aluminum, and silver.

Sound travels fastest in solids; hence, the speed of sound in steel is higher than in air, water, or wood.

Steel has the highest tensile strength among the given materials.

Copper has the highest thermal conductivity among the given materials.

Glass Wool has the highest thermal resistance among the given materials, making it a good insulator.

Steel has a much higher Young's modulus compared to rubber, wood, and plastic, indicating it is much stiffer.

Silicon is a common intrinsic semiconductor used in electronic devices.

Iron is a ferromagnetic material, which means it can be magnetized and retains its magnetic properties.

Iron is a ferromagnetic material, which means it can be magnetized and has a high magnetic permeability.

Copper is a good conductor of electricity due to its high number of free electrons.

Sulfur is a non-metal, while iron, copper, and aluminum are metals.

Glass is commonly used as a dielectric material in capacitors due to its high dielectric constant and insulating properties.

Boron-doped Silicon is a common p-type semiconductor as boron creates holes in the silicon lattice.