Chemistry-Objective Related Question Answers
801. How many groups are there in the modern periodic table?
Eighteen
802. A solution which turns red litmus to blue is called?
Alkaline
803. The elements which show the properties of both metals and non metals are called?
Metalloids
804. Which period having the minimum number of elements?
First period
805. The elements of the s-block and pblock are together referred to as?
Representative elements
806. Where are the smallest atoms seen at the modern periodic table?
Right hand top
807. The different blocks of the Long form periodic table are?
s; p; d and f
808. Where are the Largest atoms seen at the periodic table?
Bottom left
809. Which period have the largest number of elements in the periodic table?
The sixth period
810. Which is the smallest atom?
Hydrogen
811. The relative tendency of the atoms to attract electrons in chemical reactions is called?
Electronegativity
812. The scientist who prepared the electronegativity scale?
Linus Pauling
813. Which is the first artificial element?
Technetium
814. Most electropositive elements?
Francium or Caesium
815. The element which shows highest electron affinity?
Chlorine (348)
816. The most common element in the atmosphere?
Nitrogen
817. The natural element having highest atomic weight?
Uranium
818. The element which is used to coat the photo copying drum of xerox?
Selenium
819. The element present in Thyroid hormone?
Iodine
820. The element present in DNA and RNA?
Phosphorus
821. The element having the highest boiling point?
Rhenium
822. The element having the largest number of isotopes?
Tin (10 isotopes)
823. Element having highest reactivity?
Fluorine
824. Element used as bleaching agent?
Chlorine
825. Most abundant element in the earth crust?
Oxygen
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution