APN First Quiz

Hot water stored in thermo flask is

• Closed system

• Isolated system

• Open system

• None of the above

For every 10°C rise in temperature the rate of a reaction is

• Remains same

• Reduced to half

• Two times the value

• Three times the value

For a zero order reaction the rate is

• Dependent on initial concentration

• Independent of initial Concentration

• Dependent on both reactant and product

• None of the above

When the reaction is in equilibrium the change in Gibb's Free energy is

• Positive

• Negative

• Zero

• None of the above

When NaOH is dissolved in water the reaction is

• Explosive

• Exothermic

• Endothermic

• None of the above

Bonding in diamond is

• covalent

• ionic

• dipole

• metallic

Extent of physisorption of a gas increases with ___________.

• increase in temperature.

• decrease in temperature.

• decrease in surface area of adsorbent.

• decrease in strength of van der Waals forces.

Identify the compound soluble in water

• Zinc Hydroxide

• Sodium Zincate

• Lead Hydroxide

• Lead Sulphate