Q. Light energy is converted into chemical energy by -
1) Electrolysis
2) Respiration
3) Transpiration
4) Photosynthesis
Q. Oil spreads over the surface of the water because -
1) Oil is denser than water
2) Water is denser than oil
3) Oil has higher surface tension than water
4) Oil has less surface tension than water
Q. Which of the following is the most elastic?
1) Steel
2) Rubber
3) Silver
4) Glass
Q. A rolling ball stops after a certain distance. Why does it stop?
1) Due to Coulomb forces
2) Due to gravitational forces
3) Due to frictional forces
4) None of the above
Q. Which type of mirror is used in automobiles to see the traffic on the rear side?
1) Convex mirror
2) Concave mirror
3) Plane mirror
4) None of the above
Q. A solar cell converts solar energy into which energy?
1) Sound energy
2) Mechanical energy
3) Chemical energy
4) Electrical energy
Q. A light year is a unit of which physical quantity?
1) Mass
2) Distance
3) Speed
4) Temperature
Q. Which of the following is not matched correctly?
Invention Inventor
1) Proton - E. Rutherford
2) Neutron - Chadwick
3) Photon - H. Yukawa
4) Electron - J. J. Thomson
Q. The speed of sound waves is maximum in -
1) liquids
2) gases
3) solids
4) All of these
Q. Almost 98% of Earth's crust is eight elements, the following does among made up of Which of the NOT figure elements?
1) Carbon
2) Silicon
3) Calcium
4) Oxygen
IntroductionAre you passionate about sports but don't see yourself as an athlete? Do you find the business side of sports fascinating? A career in sports management could be your winning ticket! This field combines business, sports, and management, offering dynamic roles that go far beyond the field →
Foundation Date: December 8, 1991 Headquarters: The Republic of Belarus Executive Secretaries: Sergei Lebedev Member Countries: 12 Commonwealth of Independent States (CIS) was established on December 8, 1991, and the leaders of the Republic of Belarus, the Russian Federation, and Ukraine signed an a →
In 2009, an unknown programmer by the name of Satoshi Nakamoto put forward a whitepaper that proposed a creation of new form of digital currency - cryptocurrency. Cryptocurrency functions the same way as regular currencies do in that its used as a means of exchange, unit of account and a store of va →
Headquarter: New Delhi Function and Objective of the Organization: The Food Safety and Standards Authority of India (FSSAI)has been established under Food Safety and Standards Act, 2006 which consolidates various acts & orders that have hitherto handled food-related issues in various Ministries →
If you contribute your content to our site. Please mail us your content to editor@onlinegk.net