Questions

Bismillah Khan was associated with Shehnai. He made the Shehnai as the classical musical instrument in his concert in All India Musical Conference, Kolkata in 1937.

Gene is a segment of chromosomal DNA or a sequence of DNA or RNA that codes for a molecule that has a function. It is the basic physical and functional unit of heredity.

As genes are made up of DNA it impies that they are long, double chains of nucleic acids as DNA is made of nucleic acids.

Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

Magma is molten rocks beneath the earth's crust. Hot springs are heated geothermally by underlying magma.

Here all the options given are important functions of Earth's atmosphere.

Demography is the scientific study of Birth and death, The well being and the Growth of population. In brief, it is the study of human populations based on their size, composition and distribution across space – and the process through which populations change.

A rotating column of air is called as a Tornado which extends from the thunderstorm to the ground.