Chemistry Most Important MCQ // All Exam NEET JEE 11TH 12TH
Chemistry Most Important MCQ: In this Article We Provides To Chemistry Questions With Answers in MCQ For All Exam Like NEET JEE CET 11th 12th CBSE STATE Board Exams Oriented Chemistry Question.
Electrovalent compounds are
- low melting
- insoluble in polar solvents
- conductors in the fused state
- none of the above
>> conductors in the fused state
Ionic compounds don’t conduct electricity in
- solution
- fused state
- solid state
- none of the above
>>solid state
When an element of very low ionization potential reacts with an element of very high electron affinity
- a covalent bond is formed
- an electrovalent bond is formed
- a metallic bond is formed
- no bond is formed
>>an electrovalent bond is formed
The bond between two atoms of the same element is
- polar covalent bond
- ionic bond
- non-polar covalent bond
- none of the above
>>non-polar covalent bond
The percentage of ionic character of a bond is calculated by the difference in
- size of atoms
- ionization potential of atoms
- electronegativity of atoms
- atomic volumes of atoms
>>electronegativity of atoms
In which of the following C-C bond length is least?
- benzene
- ethylene
- acetylene
- diamond
>> acetylene
The paramagnetic nature of oxygen molecule is explained by
- Valence bond theory
- Heitler London theory
- Hund Mulliken theory
- None of the above
>>Hund Mulliken theory
The bonds present in CuSO4.5H2O are
- electrovalent and coordinate
- covalent and coordinate
- electrovalent and covalent
- electrovalent, covalent and coordinate
>>electrovalent, covalent and coordinate
An element having 4 electrons in its outermost orbit forms bond by
- losing electrons
- gaining electrons
- sharing electrons
- any of the above
>>sharing electrons
The decomposition of KClO3 to KCl and O2 on heating is an example of
- intermolecular redox change
- intramolecular redox change
- disproportionation or auto redox change
- none of these
>>