Questions

Dry ice is solid form of carbon dioxide, used as a cooling agent.

It lower temperature than that of water ice and not leave any residue.

The central nervous system ( brain and spinal card ) are invested with the meninges which nourish and protect the system .This again is enclosed inside a bony box which has the skin above it

Achal Kumar Jyoti (64), a retired 1975 IAS Officer batch of Gujarat Cadre, is the newly appointed Chief Election Commissioner (CEC), who took over as the head of the Election Commission in New Delhi on today. He succeeded Dr Nasim Zaidi. Jyoti will continue as the Chief Election Commissioner till January 17, 2018. Prior to this appointment, he was Election Commissioner of India. A CEC or an EC can have a tenure of six years or hold office till the age of 65 years, whichever is earlier.