1 Each silicon atom is surrounded by four oxygen atoms and each O-atom is bonded to two Si - atoms
2 Each Si-atom is surrounded by two O- is bonded to two atoms and each O-atom
3 Si-atom is bonded to two O-atoms
4 There are double bonds between \(\mathrm{Si}\) and \(\mathrm{O}\) atoms.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316962
Which of the following is correct regarding silica? I. It is a covalent compound. II. It is three-dimensional network solid. III. It is non-reactive in nature. IV. It resists attack of halogens. Choose the correct option.
1 I, II and III
2 II, III and IV
3 Both II and IV
4 All of these
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316963
Silica is reacted with sodium carbonate. What is the gas liberated?
1 \(\mathrm{CO}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{CO}_{2}\)
4 \(\mathrm{O}_{3}\)
Explanation:
CHXI11:THE P-BLOCK ELEMENTS
316964
Which of these is not a monomer for a high molecular mass silicone polymer?
1 \(\mathrm{Me}_{2} \mathrm{SiCl}_{2}\)
2 \(\mathrm{Me}_{3} \mathrm{SiCl}\)
3 \(\mathrm{PhSiCl}_{3}\)
4 \(\mathrm{MeSiCl}_{3}\)
Explanation:
\(\mathrm{Me}_{3} \mathrm{SiCl}\) on hydrolysis forms a dimer, not a polymer \(\begin{aligned}& \mathrm{Me}_{3} \mathrm{SiCl}+\mathrm{HOH} \longrightarrow \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HCl} \\& \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HOSiMe}_{3} \longrightarrow \mathrm{Me}_{3} \mathrm{Si}-\mathrm{O}-\mathrm{SiMe}_{3}\end{aligned}\)
1 Each silicon atom is surrounded by four oxygen atoms and each O-atom is bonded to two Si - atoms
2 Each Si-atom is surrounded by two O- is bonded to two atoms and each O-atom
3 Si-atom is bonded to two O-atoms
4 There are double bonds between \(\mathrm{Si}\) and \(\mathrm{O}\) atoms.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316962
Which of the following is correct regarding silica? I. It is a covalent compound. II. It is three-dimensional network solid. III. It is non-reactive in nature. IV. It resists attack of halogens. Choose the correct option.
1 I, II and III
2 II, III and IV
3 Both II and IV
4 All of these
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316963
Silica is reacted with sodium carbonate. What is the gas liberated?
1 \(\mathrm{CO}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{CO}_{2}\)
4 \(\mathrm{O}_{3}\)
Explanation:
CHXI11:THE P-BLOCK ELEMENTS
316964
Which of these is not a monomer for a high molecular mass silicone polymer?
1 \(\mathrm{Me}_{2} \mathrm{SiCl}_{2}\)
2 \(\mathrm{Me}_{3} \mathrm{SiCl}\)
3 \(\mathrm{PhSiCl}_{3}\)
4 \(\mathrm{MeSiCl}_{3}\)
Explanation:
\(\mathrm{Me}_{3} \mathrm{SiCl}\) on hydrolysis forms a dimer, not a polymer \(\begin{aligned}& \mathrm{Me}_{3} \mathrm{SiCl}+\mathrm{HOH} \longrightarrow \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HCl} \\& \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HOSiMe}_{3} \longrightarrow \mathrm{Me}_{3} \mathrm{Si}-\mathrm{O}-\mathrm{SiMe}_{3}\end{aligned}\)
1 Each silicon atom is surrounded by four oxygen atoms and each O-atom is bonded to two Si - atoms
2 Each Si-atom is surrounded by two O- is bonded to two atoms and each O-atom
3 Si-atom is bonded to two O-atoms
4 There are double bonds between \(\mathrm{Si}\) and \(\mathrm{O}\) atoms.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316962
Which of the following is correct regarding silica? I. It is a covalent compound. II. It is three-dimensional network solid. III. It is non-reactive in nature. IV. It resists attack of halogens. Choose the correct option.
1 I, II and III
2 II, III and IV
3 Both II and IV
4 All of these
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316963
Silica is reacted with sodium carbonate. What is the gas liberated?
1 \(\mathrm{CO}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{CO}_{2}\)
4 \(\mathrm{O}_{3}\)
Explanation:
CHXI11:THE P-BLOCK ELEMENTS
316964
Which of these is not a monomer for a high molecular mass silicone polymer?
1 \(\mathrm{Me}_{2} \mathrm{SiCl}_{2}\)
2 \(\mathrm{Me}_{3} \mathrm{SiCl}\)
3 \(\mathrm{PhSiCl}_{3}\)
4 \(\mathrm{MeSiCl}_{3}\)
Explanation:
\(\mathrm{Me}_{3} \mathrm{SiCl}\) on hydrolysis forms a dimer, not a polymer \(\begin{aligned}& \mathrm{Me}_{3} \mathrm{SiCl}+\mathrm{HOH} \longrightarrow \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HCl} \\& \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HOSiMe}_{3} \longrightarrow \mathrm{Me}_{3} \mathrm{Si}-\mathrm{O}-\mathrm{SiMe}_{3}\end{aligned}\)
1 Each silicon atom is surrounded by four oxygen atoms and each O-atom is bonded to two Si - atoms
2 Each Si-atom is surrounded by two O- is bonded to two atoms and each O-atom
3 Si-atom is bonded to two O-atoms
4 There are double bonds between \(\mathrm{Si}\) and \(\mathrm{O}\) atoms.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316962
Which of the following is correct regarding silica? I. It is a covalent compound. II. It is three-dimensional network solid. III. It is non-reactive in nature. IV. It resists attack of halogens. Choose the correct option.
1 I, II and III
2 II, III and IV
3 Both II and IV
4 All of these
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316963
Silica is reacted with sodium carbonate. What is the gas liberated?
1 \(\mathrm{CO}\)
2 \(\mathrm{O}_{2}\)
3 \(\mathrm{CO}_{2}\)
4 \(\mathrm{O}_{3}\)
Explanation:
CHXI11:THE P-BLOCK ELEMENTS
316964
Which of these is not a monomer for a high molecular mass silicone polymer?
1 \(\mathrm{Me}_{2} \mathrm{SiCl}_{2}\)
2 \(\mathrm{Me}_{3} \mathrm{SiCl}\)
3 \(\mathrm{PhSiCl}_{3}\)
4 \(\mathrm{MeSiCl}_{3}\)
Explanation:
\(\mathrm{Me}_{3} \mathrm{SiCl}\) on hydrolysis forms a dimer, not a polymer \(\begin{aligned}& \mathrm{Me}_{3} \mathrm{SiCl}+\mathrm{HOH} \longrightarrow \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HCl} \\& \mathrm{Me}_{3} \mathrm{SiOH}+\mathrm{HOSiMe}_{3} \longrightarrow \mathrm{Me}_{3} \mathrm{Si}-\mathrm{O}-\mathrm{SiMe}_{3}\end{aligned}\)
