Q. Base forming tendency of which of the following elements is maximum?
1) Cs
2) K
3) Na
4) Ca
Q. Which of the following particles move around the nucleus of an atom and are negatively charged?
1) Protons
2) Neutrons
3) Electrons
4) None of these
Q. Of which of the following simpler particles is an atom composed of?
1) Isotopes, isobars, positrons
2) Electrons, neutrons, protons
3) Deutrons, neutrons, positrons
4) Deutrons, neutrons, protons
Q. Which is the most reactive Halogen?
1) Fluorine
2) Iodine
3) Chlorine
4) Bromine
Q. The nucleus of an atom consists of
1) Electrons and neutrons
2) Electrons and protons
3) Protons and neutrons
4) All of the above
Q. A solution of zinc chloride cannot be stored in a vessel made of
1) Aluminium
2) Gold
3) Lead
4) Silver
Q. Which of the following statements about the use of radioactive isotopes is correct?
1) In medicine, they are used as tracers for diagnostic purposes
2) In industry, they are used to detect leak in water, oil and gas pipelines
3) They are used to determine the age of rocks and fossils
4) All of these statements are correct
Q. The branch of science, which is concerned with the study of chemical composition of the earth's crust and the changes which take place in it, is called
1) Biochemistry
2) Cytochemistry
3) Geochemistry
4) Geobiology
Q. Solder, which is used for soldering metal pieces, is an alloy of
1) Tin and zinc
2) Tin and lead
3) Zinc and lead
4) Zinc and copper
Q. Which of the following plays the central role in determining the chemical properties of atoms and molecules?
1) Electrons
2) Neutrons
3) Protons
4) All of these play equal role
Interior design is a fun and creative field. It mixes art and practicality to make spaces look good and work well. With more people wanting great places to live and work, the need for skilled interior designers is rising. Let’s look at what it takes to have a career in interior design, including nee →
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