Chemistry-Objective Related Question Answers
126. An arrangement of elements with similar properties placed together is called?
Periodic Table
127. Mendeleev's periodic table was based on?
increasing order of atomic mass
128. Moseley's periodic table was based on the?
atomic number of elements
129. The modern periodic table is based on?
atomic number
130. Modern periodic table contains?
7 horizontal rows and 18 vertical columns
131. The periodic table was discovered by?
Dmitri Ivanovich Mendeleev
132. Modern periodic table was discovered by?
Henry Moseley
133. Periodic laws were put forward by?
Mendeleev
134. Modern periodic laws were put forward by?
Moseley
135. The scientist who classified elements based on Atomic Values is?
Lothar Meyer
136. The rows in periodic table are called?
Periods
137. Columns are periodic table called?
Groups
138. The left side of the periodic table denotes?
Metals
139. The right side of the periodic table denotes?
Non-metals
140. Most abundant element on earth's crust?
Oxygen
141. Most abundant metal in earth's crust?
Aluminium
142. Most abundant metalloid in earth's crust?
Silicon
143. Most abundant element in atmosphere?
Nitrogen
144. Most abundant element in the universe?
Hydrogen
145. Most abundant element in human body?
Oxygen
146. Most abundant gas in atmosphere?
Nitrogen
147. Most abundant element in sea water?
Chlorine
148. Most abundant element in moon's surface?
Titanium
149. Most abundant metal present in human body and bones?
Calcium
150. Most abundant metal compound in bones?
Calcium phosphate
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution