The Ashok Chakra is an Indian military decoration awarded for valour, courageous action or self-sacrifice away from the battlefield. It is the peace time equivalent of the Param Vir Chakra and is awarded for the most conspicuous bravery or some daring or pre-eminent valour or self-sacrifice other than in the face of the enemy.

Nuclear power is the use of nuclear reactions that release nuclear energy to generate heat, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant.The first nuclear reactor to produce electricitywas the small Experimental Breeder reactor designed and operated by Argonne National Laboratory and sited in Idaho, USA. The reactor started up in December 1951.

The March equinox marks when the Northern Hemisphere starts to tilt toward the sun, which means longer, sunnier days. In the Northern Hemisphere, the March equinox is called the vernal equinox, because it signals the beginning of spring.

The C-type or carbonaceous asteroids are greyish in colour and are the most common, including more than 75 percent of known asteroids. They probably consist of clay and stony silicate rocks and inhabit the main belt's outer regions.

When quicklime (calcium oxide) is added to water filled in a bucket, they react chemically to form slaked lime (calcium hydroxide) and produce heat energy. So, water in the bucket becomes hot. So, water in the bucket becomes hot. Thus, it is characterised by change in temperature of the mixture.

The Decomposition reactions are carried out by electricity are used to extract several metals from their naturally occurring compounds like chlorides and oxides. For example, sodium metal is extracted by the electrolysis of molten sodium chloride.

A type of hydrocarbon that contains carbon atoms connected only bya single bond is called saturated hydrocarbon or alkanes. It is the simplestform of the hydrocarbon species.

A dynamo is an electrical generator that creates direct current using a commutator. It converts mechanical energy into electrical energy.

All the above statements are true except d). The viscosity of the gas increases with the rise in temperature.

Hooke’s law is the law of elasticity discovered by the English scientist Robert Hooke in 1660.A law in physics stating that the extent to which an elastic material will change size and shape under stress is directly proportional to the amount of stress applied.