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
>>