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  • 1(current)
Q. No.
Consider the given two statements:
Assertion (A): CCl4 is insoluble in water while SiCl4 is soluble in water. 
Reason (R): Si in SiCl4 can accommodate the lone pair of electrons in d-orbitals obtained from the oxygen atom of water molecules. 
 
1.  Both (A) and (R) are True and (R) is the correct explanation of (A). 
2.  Both (A) and (R) are True but (R) is not the correct explanation of (A). 
3.  (A) is True but (R) is False. 
4.  (A) is False but (R) is True. 
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 87%
Level 1: 80%+
Hints
Given below are two statements: 
 
Statement I:  Silicones are surrounded by non-polar alkyl groups, thus water-repelling in nature. 
Statement II:  The starting materials for the manufacturing of silicones are alkyl or aryl-substituted silicon chlorides. 
 
1.  Both Statement I and Statement II are correct. 
2.  Both Statement I and Statement II are incorrect. 
3.  Statement I is correct but Statement II is incorrect. 
4.  Statement I is incorrect but Statement II is correct. 
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 84%
Level 1: 80%+
Please attempt this question first.
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Please attempt this question first.

Quartz is extensively used as a piezoelectric material, it contains-

1. Pb 2. Si
3. Ti 4. Sn
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 81%
Level 1: 80%+
Hints
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Match the species in Column-I with their corresponding hybridisation in Column-II:

Column-I (Species) Column-II (Hybridisation)
A. Boron in [B(OH)4]- i. sp2
B. Aluminium in [Al(H2O)6]3+ ii. sp3
C. Carbon in Buckminsterfullerene iii. sp3d2
D. Germanium in [GeCl6]2-

Codes:

 A   B   C   D 
1.  ii  iii  i iii
2.  i   i  iii  ii
3. iii  ii ii i
4.  i  iii  ii  iii
Subtopic:   Structure & Properties of Allotropes of C | Properties of Structure of SiO2 & Other Compounds |
 84%
Level 1: 80%+
Hints

Me3SiCl is used during polymerization of organ silicones because

a. Chain length of organic silicone polymers can be controlled by adding Me3SiCl.
b. Me3SiCl blocks the end terminal of silicone polymer.
c. Me3SiCl improves the quality and yield of the polymer.
d. Me3SiCl acts as a catalyst during polymerization.

Choose the correct option:

1. (a, b) 2. (b, c)
3. (c, d) 4. (a, d)
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 78%
Level 2: 60%+
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