Chemistry IX - BIEK

From the following options given, which enthalpy change is always negative

• Enthalpy of formation
• Enthalpy of decomposition
• Enthalpy of combustion
• Enthalpy of reaction

No work is done in a thermochemical process, if the system is kept at

• Constant temperature
• Constant pressure
• Constant volume
• Constant mass

Which of the following state of water has least entropy

• Liquid water at 4°C
• Liquid water at 25°C
• Steam at 100°C
• Ice at 0°C

Which of the following change is not an endothermic reaction

• Decomposition of lime
• Cracking of alkanes
• Combustion of butane
• Photosynthesis

The properties which are NOT DEPENDANT on quantity of matter in the given system are called

• Colligative Properties
• Intensive Properties
• Chemical Properties
• Extensive Properties

A colloidal solution of Liquid in Solid is called

• Gel
• Sol
• Emulsion
• Solid Sol

Which of the following is not a colligative property?

• Vapour Pressure lowering
• Depression in Solidification Point
• Osmotic Pressure
• Elevation of Atmospheric Pressure

How many moles of NaOH are present in a 2dm³ of 2molar aqueous solution of it

• 0.5moles
• 1mol
• 2moles
• 4moles

Effect of pressure change is significant in the solubility of

• Gas into Liquid
• Liquid into Gas
• Gas into Solid
• Solid into Gas

Identify the CORRECT statement about colloidal solution

• Shows Tyndall effect
• Possess Brownian Movement
• Particle size > 1 nm
• Pphysical appearance: Translucent