Stiffness is the extent to which an object resists deformation in response to an applied force. The complementary concept is flexibility or pliability: the more flexible an object is the less stiff it is.

The human ear responds to sounds with frequencies in the range from 20 Hz to 20,000 Hz. This is called the audible range of the human ear. In audible sound waves whose frequencies are less than 20 Hz are in the infrasonic range.

Ultrasonic waves are used for the purpose of welding plastic. High frequency ultrasonic vibrations are used to weld couple of parts of the plastic. However, this welding process is very well programmed and has time and frequency already programmed into the welding machine and computer carry out each and every step of the welding process.

Natural gas is a fossil energy source that formed deep beneath the earth's surface. Natural gas contains many different compounds. The largest component of natural gas is methane, a compound with one carbon atom and four hydrogen atoms (CH4).

The International Olympic Committee (IOC) lifted the sanctions imposed on India to host international sporting events. The sanctions were imposed on India when Pakistani shooters were not issued visas for the World Cup held in Delhi in February 2019.

Namma Kolhapuri chappal has earned Geographical indication tag from Intellectual Property India. The approval for GI tag was jointly received by Karnataka and Maharashtra.

India's ace cueist Pankaj Advani clinched the 35th men's Asian Snooker Championship held in Doha to complete a career grand slam in cue sports. Advani defeated Thanawat Tirapongpaiboon in the final to become the only one to win the Asian and World championships in all formats.

The Chief Election Commissioner enjoys the same status and receives salary and perks as available to Judges of the Supreme Court of India. The salary is drawn from the Consolidated Fund of India.

The Attorney General for India is the Indian government's chief legal advisor, and is primary lawyer in the Supreme Court of India. He can be said to be the lawyer from government's side. He is appointed by the President of India under Article 76(1) of the Constitution and holds office during the pleasure of the President. He is not the member of the cabinet.

The Constitution of India authorized the parliament to establish a contingency fund of India. The Contingency Fund of India is established under Article 267 of the Indian Constitution. It is in the nature of an imprest (money maintained for a specific purpose).