Carbon and its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316185 Which of the following is known as pyrene?

1 \(\mathrm{CCl}_{4}\)
2 \(\mathrm{CS}_{2}\)
3 \(\mathrm{S}_{2} \mathrm{Cl}_{2}\)
4 Solid \(\mathrm{CO}_{2}\)
CHXI11:THE P-BLOCK ELEMENTS

316186 Which form of carbon of used in public address microphone systems?

1 Graphite
2 Charcoal
3 Coke
4 Lamp black
CHXI11:THE P-BLOCK ELEMENTS

316187 Carbogen is

1 Mixture of \(90 - 95\% \,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {{\text{O}}_2} + 5 - 10\% {\mkern 1mu} {\mkern 1mu} \,{\text{C}}{{\text{O}}_2}\)
2 Used by pneumonia patients for respiration
3 Used by victims of \(\mathrm{CO}\) for respiration
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316188 \(\mathrm{CO}_{2}\) and \(\mathrm{N}_{2}\) are non-supporters of combustion. However, for putting out fires \(\mathrm{CO}_{2}\) is preferred over \(\mathrm{N}_{2}\) because \(\mathrm{CO}_{2}\) :

1 Does not burn
2 Forms non-combustible products with burning substances.
3 Is denser than nitrogen
4 Is a more reactive gas
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CHXI11:THE P-BLOCK ELEMENTS

316185 Which of the following is known as pyrene?

1 \(\mathrm{CCl}_{4}\)
2 \(\mathrm{CS}_{2}\)
3 \(\mathrm{S}_{2} \mathrm{Cl}_{2}\)
4 Solid \(\mathrm{CO}_{2}\)
CHXI11:THE P-BLOCK ELEMENTS

316186 Which form of carbon of used in public address microphone systems?

1 Graphite
2 Charcoal
3 Coke
4 Lamp black
CHXI11:THE P-BLOCK ELEMENTS

316187 Carbogen is

1 Mixture of \(90 - 95\% \,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {{\text{O}}_2} + 5 - 10\% {\mkern 1mu} {\mkern 1mu} \,{\text{C}}{{\text{O}}_2}\)
2 Used by pneumonia patients for respiration
3 Used by victims of \(\mathrm{CO}\) for respiration
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316188 \(\mathrm{CO}_{2}\) and \(\mathrm{N}_{2}\) are non-supporters of combustion. However, for putting out fires \(\mathrm{CO}_{2}\) is preferred over \(\mathrm{N}_{2}\) because \(\mathrm{CO}_{2}\) :

1 Does not burn
2 Forms non-combustible products with burning substances.
3 Is denser than nitrogen
4 Is a more reactive gas
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CHXI11:THE P-BLOCK ELEMENTS

316185 Which of the following is known as pyrene?

1 \(\mathrm{CCl}_{4}\)
2 \(\mathrm{CS}_{2}\)
3 \(\mathrm{S}_{2} \mathrm{Cl}_{2}\)
4 Solid \(\mathrm{CO}_{2}\)
CHXI11:THE P-BLOCK ELEMENTS

316186 Which form of carbon of used in public address microphone systems?

1 Graphite
2 Charcoal
3 Coke
4 Lamp black
CHXI11:THE P-BLOCK ELEMENTS

316187 Carbogen is

1 Mixture of \(90 - 95\% \,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {{\text{O}}_2} + 5 - 10\% {\mkern 1mu} {\mkern 1mu} \,{\text{C}}{{\text{O}}_2}\)
2 Used by pneumonia patients for respiration
3 Used by victims of \(\mathrm{CO}\) for respiration
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316188 \(\mathrm{CO}_{2}\) and \(\mathrm{N}_{2}\) are non-supporters of combustion. However, for putting out fires \(\mathrm{CO}_{2}\) is preferred over \(\mathrm{N}_{2}\) because \(\mathrm{CO}_{2}\) :

1 Does not burn
2 Forms non-combustible products with burning substances.
3 Is denser than nitrogen
4 Is a more reactive gas
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CHXI11:THE P-BLOCK ELEMENTS

316185 Which of the following is known as pyrene?

1 \(\mathrm{CCl}_{4}\)
2 \(\mathrm{CS}_{2}\)
3 \(\mathrm{S}_{2} \mathrm{Cl}_{2}\)
4 Solid \(\mathrm{CO}_{2}\)
CHXI11:THE P-BLOCK ELEMENTS

316186 Which form of carbon of used in public address microphone systems?

1 Graphite
2 Charcoal
3 Coke
4 Lamp black
CHXI11:THE P-BLOCK ELEMENTS

316187 Carbogen is

1 Mixture of \(90 - 95\% \,{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {{\text{O}}_2} + 5 - 10\% {\mkern 1mu} {\mkern 1mu} \,{\text{C}}{{\text{O}}_2}\)
2 Used by pneumonia patients for respiration
3 Used by victims of \(\mathrm{CO}\) for respiration
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316188 \(\mathrm{CO}_{2}\) and \(\mathrm{N}_{2}\) are non-supporters of combustion. However, for putting out fires \(\mathrm{CO}_{2}\) is preferred over \(\mathrm{N}_{2}\) because \(\mathrm{CO}_{2}\) :

1 Does not burn
2 Forms non-combustible products with burning substances.
3 Is denser than nitrogen
4 Is a more reactive gas
For More Updates join with Us