RCl Sicu-powderR2SiCl2H2O
R2SiOH2 condensation A

Compound (A) is -

1. A linear silicone 2. A chlorosilane
3. A linear silane 4. A network silane

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 70%
From NCERT
Please attempt this question first.
Hints
Links
Please attempt this question first.

BOH3+NaOHNaBO2+NaBOH4+H2O

 This reaction is made to proceed in forward direction by -

1. Addition of Cis- 1,2 diol

2. Addition of borax

3. Addition of trans 1,2- diol

4. Addition of Na2HPO4

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
Please attempt this question first.
Hints
Links

An Aqueous solution of borax reacts with 2 moles of acid due to -

1. Formation of 2 moles of  B(OH)3  only

2. Formation of 2 moles of  [B(OH)4]-  only

3. Formation of 1 mole each of  B(OH)3 and [B(OH)4]-

4. Formation of 2 moles each of [B(OH)4]- and B(OH)3, only [B(OH)4]-  reacts with an acid 

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
Please attempt this question first.
Hints
Links

Aluminium becomes passive in nitric acid because it-

1. Is a noble metal

2. Forms a thin film of oxide

3. Has a positive reduction potential

4.  None of the above

Subtopic:  Boron Family- Preparations, Properties & Uses |
 92%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Chemically thermite is -

1.  Fe and Al

2.  Ferric oxide and aluminium powder

3.  Barium peroxide and magnesium powder

4.  Cu and aluminium

Subtopic:  Boron Family- Preparations, Properties & Uses |
 70%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Borax bead test is responded by:

1.  Divalent metals

2.  Heavy metals

3.  Light metals

4.  Metal which forms coloured metaborates

Subtopic:  Boron Family- Preparations, Properties & Uses |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The incorrect statement among the following is -

1. GeOH2 is amphoteric

2. GeCl2 is more stable than GeCl4

3. GeO2 is weakly acidic

4. GeCl4 + 2HCl ⇄ H2[GeCl6]

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 67%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Silicon carbide is used as:

1. Dehydrating agent 2. Abrasive
3. Solvent 4. Catalyst
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

R3SiCl on complete hydrolysis forms:

1.  R3SiOH

2.  R3SiOSiR3

3.  R3Si=O

4.  None of the above.

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 55%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The percentage of lead in a lead pencil is-

1.  20

2.  0

3.  80

4.  70

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 58%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints