Chemistry-Objective Related Question Answers
76. The term molecule was coined by?
Avogadro
77. International mole day is on?
October 23
78. What is known as the bricks of Universe?
Molecules
79. The SI Unit of the amount of substance?
Mole
80. A molecule made up of only\one kind of atom is called?
Monoatomic molecule
81. A molecule made up of two kinds of atom is called?
Diatomic molecule
82. Substance which is composed of similar I' kind of atoms is called?
Elements
83. The scientist who proved that the elements are made up of atoms?
John Dalton
84. The term 'elements' was coined by?
Robert Boyle
85. The first scientist who gave a definition to element is?
Robert Boyle
86. The scientist who gave symbols for elements on the basis of their names?
John .J. Berzelius
87. The scientist who classified elements into Metals and Non-metals is?
Lavoisier
88. Elements are classified into?
Metals; non-metals and metalloids
89. Elements that conduct electricity and heat which tends to lose electrons are called?
Metals
90. Elements that do not conduct electricity and heat which tends to accept electrons?
Non-Metals
91. Elements showing properties of both metals and non-metals are?
Metalloids
92. The international association which gives names of elements?
International Union of Pure and Applied Chemistry (IUPAC)
93. The headquarters of IUPAC?
Zurich (Switzerland)
94. The most abundant element in the universe?
Hydrogen
95. The second most abundant element in the universe?
Helium
96. The only radio active element in liquid form?
Francium
97. The only radio active element in gaseous form?
Radon
98. The most electro positive stable element?
Cesium
99. The combination of two or more elements . is called?
Compounds
100. The separation of a compound into its elements by chemical means is called?
Analysis
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