For which among the following reactions, change in entropy is less than zero?

• Sublimation of iodine

• Dissociation of hydrogen

• Formation of water

• Thermal decomposition of calcium carbonate

Select a ferromagnetic material from the following.

• Dioxygen

• Chromium (IV) oxide

• Benzene

• Dihydrogen monoxide

What is the volume of water consumed during acid hydrolysis of 1.368 kg of sucrose?

(Given : molar masses of sucrose = 342, water = 18, density of water = 1g/cm³)

• 0.072 dm³

• 0.070 dm³

• 0.18 dm³

• 0.018 dm³

Identify a metalloid from the following list of elements.

• Carbon

• Neon

• Sodium

• Tellurium

Which among the following is a feature of adiabatic expansion?

• $∆$V < 0

• $∆$U < 0

• $∆$U > 0

• $∆$T = 0

6.

Molarity is defined as

• the number of moles of solute dissolved in 1 dm³ of the solution

• the number of moles of solute dissolved in 1 kg of solvent

• the number of moles of solute dissolved in 1 dm³ of the solvent

• the number of moles of solute dissolved in 100 ml of the solvent

What is the amount of work done when two moles of ideal gas is compressed from a volume of 1m³ to 10 dm³ at 300 K against a pressure of 100 kPa?

• 99 kJ

• -99kJ

• 114.9 kJ

• -114.9 kJ

Which of the following compounds is most acidic in nature?

• 4-chlorobutanoic acid

• 3-chlorobutanoic acid

• 2-chlorobutanoic acid

• Butanoic acid

[Cr(NH₃)₆][Cr(SCN)₆] and [Cr(NH₃)₂(SCN)₄] [Cr(NH₃)₄(SCN)₂] are the examples of what type of isomerism?

• Ionisation isomerism

• Linkage isomerism

• Coordination isomerism

• Solvate isomerism

Which among the following functional groups has been given the highest priority while assigning R-S configuration?

• -C₆H₅

• -CN

• -C₂H₅

• -CH₃