Which of the following oxide is amphoteric in nature?
1. SnO2
2. SiO2
3. GeO2
4. CO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following oxide is amphoteric?
1. CO2
2. SnO2
3. CaO
4. SiO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is incorrect?
1. NaHCO3 on heating gives Na2CO3
2. Pure sodium metal dissolves in liquid ammonia to give a blue solution.
3. NaOH reacts with glass to give sodium silicate
4. Aluminium reacts with excess NaOH to give Al(OH)3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIncorrect statement among the following about zeolites is:-
1. They have an open structure which enables them to take up small molecules.
2. Zeolites are aluminosilicates having a three-dimensional network.
3. Some of the units are replaced by ions in zeolites.
4. They are used as cation exchangers.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn Borax bead test which compound is formed :
1. Orthoborate
2. Metaborate
3. Double oxide
4. Tetraborate
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most probable oxidation state of Pb & Sn will be-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the correct statements from the following:
a. is used as a refrigerant ice-cream and frozen food.
b. The structure of customs12 six carbon rings and 25 five carbon rings
c. ZSM-5, a type of zeolite, is used to convent alcohol into gasoline.
d. CO is a colorless and odorless gas
1. (a) and (c) only
2. (b) and (c) only
3. (c) and (d) only
4. (a), (c) and (c) only
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following compounds is used in cosmetic surgery?
1. Silica
2. Silicates
3. Silicones
4. Zeolites
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAluminium chloride in acidified aqueous solution forms a complex 'A'. The formula of A and hybridisation state of Al in 'A' is respectively-
1. [Al(H2O)6]3+, sp3d2
2. [Al(H2O)4]3+, sp3
3. [Al(H2O)4]3+, dsp2
4. [Al(H2O)]3+, d2sp3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following species is not stable?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology