Which of the following is a Lewis acid?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe geometry of a complex species can be understood from the knowledge of the type of hybridization of orbitals of the central atom. The hybridization of orbitals of a central atom in and the geometry of the complex are respectively
1. sp3, tetrahedral
2. sp3, square planar
3. sp3d2, octahedral
4. dsp2, square planar
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following oxides is acidic in nature?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe exhibition of the highest coordination number depends on the availability of vacant orbitals in the central atom. Which of the following elements is not likely to act as a central atom in ?
1. B
2. Al
3. Ga
4. In
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBoric acid is an acid because its molecule
1. Contains replaceable H+ ion
2. Gives up a proton
3. Accepts OH- from water releasing proton
4. Combines with proton from water molecule
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCatenation i.e., linking of similar atoms depends on the size and electronic configuration of atoms. The
the tendency of catenation in group 14 elements follows the order-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySilicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled by adding
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct order of Ionization enthalpy for the elements of group 13 among the following is-
1. B>Al>Ga>In>Tl
2. B<Al<Ga<In<Tl
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the structure of diborane,
1. All hydrogen atoms lie in one plane and boron atoms lie in a plane perpendicular to this plane.
2. 2 boron atoms and 4 terminal hydrogen atoms lie in the same plane and 2 bridging hydrogen atoms lie in the perpendicular plane
3. 4 bridging hydrogen atoms and boron atoms lie in one plane and two terminal hydrogen atoms lie in a plane perpendicular to this plane
4. All the atoms are in the same plane
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the correct resonance structures of carbon dioxide from one given below
a.
b.
c.
d.
Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology