Empirical formula is the
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4,306 questionsWhen a hypothesis is proven within the limit of available evidence, it becomes a
When C\(_2\)H\(_4\) molecule is polymerized, the polymer formed is
A few drops of sodium hydroxide is added to an aqueous solution, a green precipitate is formed. The ion that may be present in the solution is
Nucleons are sub-atomic particles which consist of
In the periodic table, valence electrons are indicated by
The allotrope of carbon used in the decolourization of sugar is
Which of the following oxides is amphoteric?
Five d-orbitals have the same energy level in an isolated transition metal are described as
Which of the following metals would not release hydrogen when reacted with dilute HCl?
Exothermic reactions take place when energy given out in making bonds is
The lustre of a metal is due to its
Which of the following elements is commercially obtained by the electrolysis of its fused salt?
Which of the following alkanols is tertiary?
The electron configuration of element Y is 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^4\). Y, therefore,
Which of the following species is the most powerful reducing agent?
Neutral atom of Neon with atomic number 10 is isoelectronic with
The IUPAC name of the compound CH\(_3\)CHClCH\(_2\)OH is
A salt that could be prepared by double decomposition is
All the following compounds are covalent except