Q. Which of the following contributes the maximum to the greenhouse effect?
1) Carbon dioxide
2) Water vapour
3) Methane
4) Nitrous oxide
Q. The function of heavy water in a nuclear reactor is to -
1) Slow down the speed of neutrons
2) Increase the speed of neutrons
3) Cool down the reactor
4) Stop the nuclear reaction
Q. Cooking gas is a mixture of -
1) Carbonmonoxide and carbondioxide
2) Butane and Propane
3) Methane and Ethylene
4) Carbondioxide and Oxygen
Q. Lime water contains -
1) Sodium hydroxide
2) Calcium hydroxide
3) Sodium carbonate
4) Calcium chloride
Q. Washing soda is -
1) Sodium chloride
2) Hydrated sodium carbonate
3) Sodium bicarbonate
4) Calcium carbonate
Q. Common salt is obtained from seawater by the process of -
1) Sublimation
2) Evaporation
3) Crystalization
4) Filtration
Q. Radioactivity is a property of -
1) Atomic nuclei
2) Excited electrons
3) X-rays
4) Ultraviolet light
Q. Radioactivity has applications in -
1) Medicine
2) Agriculture
3) Industry
4) All of these
Q. The nucleus of an atom contains -
1) Protons and Neutrons
2) Protons and Electrons
3) Neutrons and Electrons
4) Only Neutrons
Q. The term pH denotes the -
1) Temperature of solution
2) Vapour pressure of solution
3) Acidity or Basicity of solution
4) Ionic strength of solution
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