Borax bead test is responded by:
1. Divalent metals
2. Heavy metals
3. Light metals
4. Metal which forms coloured metaborates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following is -
1. is amphoteric
2. is more stable than
3. is weakly acidic
4. GeCl4 + 2HCl ⇄ H2[GeCl6]
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySilicon carbide is used as:
1. Dehydrating agent
2. Abrasive
3. Solvent
4. Catalyst
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyon complete hydrolysis forms-
1.
2.
3.
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe percentage of lead in a lead pencil is-
1. 20
2. 0
3. 80
4. 70
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTin cry refers to-
1. Conversion of white to grey tin
2. Tin plating
3. Conversion of white tetrahedral tin to white rhombohedral tin
4. Emission of sound while bending a tin rod
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statement regarding polymeric silicon dioxide is -
1. Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms
2. Each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms
3. Silicon atom is bonded to two oxygen atoms
4. These are double bonds between silicon and oxygen atoms
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAlF3 is soluble in HF only in the presence of KF due to the formation of-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct statement regarding inert pair effect is -
1. Sn2+ is an oxidizing agent while Pb4+ is a reducing agent
2. Sn2+ and Pb2+ both are oxidizing agents
3. Sn4+ is a reducing agent while Pb4+ is an oxidizing agent
4. Sn2+ is a reducing agent while Pb4+ is an oxidizing agent
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn element that cannot form ion is -
1. Ga
2. Al
3. B
4. In
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology