Questions

The outer most electrons that are free to move are called valency electrons that are responsible for the conductivity in the metal atoms.

The freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs.

For undo the action or last action [Ctrl + Z] is used.

Alcohol has many sensations and effects like dizziness, nausea and loss of concentration.

Lines are used in art to indicate

a. boundaries between forms.
b. direction and motion.
c. shadows and highlights.
d. spatial depth on flat surfaces.

Before transferring the fish, the position is the man with the fish and the bucket of water. After transferring the position is: the man without the fish, but the fish inside the water in the bucket. Thus to know  whether there is any change in weight, it is enough to consider whether there is any change in weight when the fish in air is transferred into the water. The answer is there is no change as when in water though it loses weight due to upthrust of water on it, the level of water increases and exerts an equal force at the bottom.So, (c) is correct.

The Robe

Indian Navy’s survey vessel INS Sarvekshak has become the India’s first warship to install solar power system on board. The solar power system works on sunlight and hence is 100% per cent reliable for power source that can be used for communication equipment, battery charging and general lightings onboard round the clock with battery outputs during night. The system is maintenance free.