Correct Answer :   20

In geometry, an icosagon or 20-gon is a twenty-sided polygon.

Correct Answer :   Helium

Helium is a special gas called a Noble Gas, which means it doesn't burn. When a match is held near a helium-filled balloon, the balloon pops.

Correct Answer :   Pascal

The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m², or kg·m⁻¹·s⁻²).

Correct Answer :   Trinity

On 16 July 1945, the 'Trinity' nuclear test plunged humanity into the so-called Atomic Age. The first-ever nuclear bomb was detonated in New Mexico, at the Alamogordo Test Range. Nicknamed the “gadget”, the plutonium-based implosion-type device yielded 19 kilotons, creating a crater over 300 metres wide.

Correct Answer :   Dakshin Gangotri

Dakshin Gangotri was the first scientific base station of India situated in Antarctica, part of the Indian Antarctic Programme. It is located at a distance of 2,500 kilometres (1,600 mi) from the South Pole.

Correct Answer :   Cuttuck

The Central Rice Research Institute is located in Cuttack in Odisha state (200N, 860E) at 24 meters above mean sea level (MS1). The annual rainfall at Cuttack is about 1200 – 1500 millimeters and is received mostly during June-October (Kharif or Wet Season).

Correct Answer :   Subhash Mukhopadhyay

Subhash Mukhopadhyay (16 January 1931 – 19 June 1981) was an Indian scientist, physician from Hazaribagh, Bihar and Orissa Province, British India (now in Jharkhand, India), who created the world's second and India's first child using in-vitro fertilisation.

Correct Answer :   Jyoti Basu and Sukh Ram

With Jyoti Basu as chief minister of West Bengal making India's first cell-phone call to Sukh Ram, the communications minister in the P.V. Narasimha Rao government. The call made in July 1995, between Writer's Building in Kolkata and Sanchar Bhavan in Delhi was carried on the network of Mobile Net.

Correct Answer :   15th August,1995

VSNL first launched the internet in India on August 15, 1995

Correct Answer :   V Ramakrishnan

Venki Ramakrishnan, byname of Venkatraman Ramakrishnan, (born 1952, Chidambaram, Tamil Nadu, India), Indian-born physicist and molecular biologist who was awarded the 2009 Nobel Prize for Chemistry, along with American biophysicist and biochemist Thomas Steitz and Israeli protein crystallographer Ada Yonath, for his research into the atomic structure and function of cellular particles called ribosomes.