a
Viscosity of liquid increases with the decrease in:
- Temperature
- Intermolecular forces
- Atmospheric pressure
- Molecular mass
- a
-
Viscosity is the resistance of liquid to flow.
Which one of the following is not a state function?
- Temperature
- Work done
- Internal energy
- Pressure
- b
-
Temperature, Internal Energy and Pressure are state functions.
One Calorie is equal to:
- 4.184 joule
- 41.48 joule
- 418.4 joule
- 4184.0 joule
- a
-
1 Kilocalorie is equal to 4184 J.
A calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C.
A microscope property which has some definite initial and final value is:
- Work done
- Phase
- Internal Energy
- State function
- c
AlCl3 acts as Lewis acid as it:
- Accepts proton
- Donates proton
- Is having incomplete octet
- Donates electrons
- c
Which of the following statement is not correct for a galvanic cell?
- Reduction occur cathode
- Oxidation occur at cathode
- Electron flow from cathode to anode
- Both A and B
- a
-
Oxidation occurs at anode.
Electron flow from anode to cathode.
SCUBA is a breathing apparatus which contains:
- 50% Nitrogen and 50% Oxygen
- 96% Helium and 4% Oxygen
- 96% Oxygen and 4% Helium
- 78% Nitrogen and 21% Oxygen
- b
-
SCUBA stands for Self Contained Underwater Breathing Apparatus. It is used for breathing underwater.
Pure mixture of 50% both is dangerous.
Normal ratio of both is not used for deep depth.
Maximum Helium as 96% is used in deep dive to prevent from Nitrogen Narcosis.
Too much Oxygen is dangerous.
Ionic product of (Kw) of water will increase if:
- H plus ion are added
- OH negative ions are added
- Temperature increased
- Pressure increase
- c
-
Kw is ionic product of water.
Kw tells us about strength of water in making H+ and OH-.
H+ makes water acidic and HO- makes water basic.
Pure water has equal amount of H+ and HO-.
Lead storage battery is a/an:
- Dry cell
- Electrolytic cell
- Voltaic cell
- Daniel solution
- c
-
An electrochemical cell that converts chemical energy into electrical energy by a spontaneous redox reaction.
Lead storage battery works on spontaneous redox reactions.
Voltaic cell is also called Galvanic cell.