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  • 1(current)
Q. No.

Given below are two statements: 

Assertion (A): [SiF6]2– is known whereas [SiCl6]2– is not.
Reason (R): Cl atom causes higher steric hindrance.
 
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
Assertion (A): Silicones are hydrophobic in nature.
Reason (R): Si–O–Si linkages are moisture sensitive.
 
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. Both (A) and (R) are False.
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
Level 3: 35%-60%
Hints
Consider the given statements:
Statement I: Both carbon and silicon atoms belong to group 14. Both CO2 and SiO2 are gases and linear molecules.
Statement II: Being electron deficient due to an incomplete octet of the central atom, both BCl3 and AlCl3 behave as Lewis acids.
 
1. Statement I is correct; Statement II is correct.
2. Statement I is incorrect; Statement II is incorrect.
3. Statement I is correct; Statement II is incorrect.
4. Statement I is incorrect; Statement II is correct.
 
Subtopic:  Boron Family- Preparations, Properties & Uses | Properties of Structure of SiO2 & Other Compounds |
 52%
Level 3: 35%-60%
Hints
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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

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
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