Name the type of the structure of silicate in which one oxygen atom of [SiO4]4- is
shared?
1. Sheet silicate
2. Pyrosilicate
3. three dimensional silicate
4. Linear chain silicate
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following anions is present in chain structure silicates?
(a) (b)
(c) (d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHeat of adduct formation
The numerical value of is found to be maximum for :
(1)
(2)
(3)
(4)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBorax is converted into crystalline boron by the following steps:
X and Y are respectively :
1. HCl, Mg
2. HCl, C
3. C, Al
4. HCl, Al
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe dissolution of in a solution of results in the formation of -
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChoose the correct squence for the geometry of thr given molecules Borazone, Borazole, trimer of FCN. ('P' stands for planar and 'NP' stdans for non-planar)
(1) NP, NP, NP, P, P
(2) P, P, NP, NP, P
(3) NP, NP, NP, P, NP
(4) NP, P, P, NP, P
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe number of carbon atoms per unit cell of diamond unit cell is:-
1. 4
2. 8
3. 6
4. 1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIt is because inability of ns2 electrons of the valence shell to participate in bonding that
(1) Sn2+ is reducing while Pb4+ is oxidising agent
(2) Sn2+ is oxidising while Pb4+ is reducing agent
(3) Sn2+ and Pb2+ are both oxidising and reducing agent
(4) Sn4+ is reducing while Pb4+ is oxidising agent
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following regarding borax is-
1. It is a useful primary standard for titrating against acids
2. One molecule of borax contains 4 bonds
3. Aqueous solution of borax can be used as a buffer
4. It is made up of two triangular units and two tetrahedral units
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHow can this reaction is made to proceed in forward direction?
(a) addition of cis1, 2 diol (b) addition of borax
(c) addition of trans1, 2 diol (d) addition of
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology