R3SiCl on polymerisation after hydrolysis forms:

(1) R3SiOH

(2) R3Si-O-SiR3

(3) R2Si=O

(4) None of these

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 54%
From NCERT
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Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is:

(1) R4Si

(2) RSiCl3

(3) R2SiCl2

(4) R3SiCl

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 53%
From NCERT
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The most commonly used reducing agent  is:

(1) SnCl4

(2) HF

(3) SnCl2

(4) Cl2

Subtopic:  Properties of Glass, Pb & Sn compounds |
 73%
From NCERT
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Tin plague is the:

(1) conversion of stannous to stannic

(2) conversion of white tin to grey tin

(3) emission of sound while bending a tin rod

(4) atmospheric oxidation of tin

Subtopic:  Properties of Glass, Pb & Sn compounds |
 58%
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When chlorine is passed through molten tin, the product obtained is:

(1) SnCl2

(2) [SbCl4]2-

(3) [SnCl6]2-

(4) SnCl4

Subtopic:  Properties of Glass, Pb & Sn compounds |
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Iodine is decolourised by:

(1) ZnCl2

(2) HgCl2

(3) SnCl2

(4) AlCl3

Subtopic:  Properties of Glass, Pb & Sn compounds |
 54%
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Addition of excess of sodium hydroxide solution to stannous chloride solution, gives:

(1) Sn(OH)2

(2) SnO2.H2O

(3) Na2SnO3

(4) Na2SnO2

Subtopic:  Properties of Glass, Pb & Sn compounds |
From NCERT
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When SnCl2 reacts with HgCl2, the product formed is-

1. Sn+HgCl4

2. Sn+Cl2+Hg2Cl2

3. SnCl4 and Hg2Cl2

4. None of the above

Subtopic:  Properties of Glass, Pb & Sn compounds |
 70%
From NCERT
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The soldiers of the Napolean army while at the Alps during freezing winter suffered a serious problem with regards to the tin buttons of their uniforms. White Metallic tin buttons get converted to grey powder. This transformation is related to-

1. An interaction with water vapour contained in humid air

2. A change in the crystalline structure of tin

3. A change in the partial pressure of O2 in the air

4. An interaction with N2 of air at low temperature

Subtopic:  Properties of Glass, Pb & Sn compounds |
 58%
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Most ionic chloride is:

1. PbCl2

2. CCl4

3. PbCl4

4. SiCl4

Subtopic:  Properties of Glass, Pb & Sn compounds |
 61%
From NCERT
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