Which loses weight on exposure to the atmosphere ?

1. Concentrated H2SO4

2. Solid NaOH

3. A saturated solution of CO2

4. Anhydrous sodium carbonate

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
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The correct order of ease of hydrolysis is :

1. CCl4 < SiCl4 < PCl5 < AlCl3

2. AlCl3 < CCl4 < PCl5 < SiCl4

3. CCl4 < AlCl3 < PCl5 < SiCl4

4. CCl4 < AlCl3 < SiCl4 < PCl5

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
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Carbon dioxide is a gas but silica is a solid because:

1.  carbon dioxide is composed of discrete covalent CO2 molecules whereas silica has continuous

     tetrahedral structure

2.  CO2 molecules are lighter than SiO2 molecules

3.  CO2 is more acidic than SiO2

4.  melting point of silica is very high

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 79%
From NCERT
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The greatest percentage of CO is in:

1.  coal gas

2.  producer gas

3.  water gas

4.  oil gas

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 55%
From NCERT
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Butter of tin is:

1.  SnCl2·5H2O

2.  SnCl4·5H2O

3.  SnBr2·2H2O

4.  SnBr4·5H2O

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 62%
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CO2 and N2 are non-supporters of combustion. However, for putting out fires CO2 is preferred over N2 because CO2:

1. Does not burn.

2. Forms non-combustible products with burning substances.

3. Is denser than nitrogen.

4. Is a more reactive gas.

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
From NCERT
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When sodium or potassium oxide is heated in a current of CO2 at 360°C, we get:

1. sodium formate

2. sodium oxalate

3. sodium acetate

4. sodium carbonate

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 66%
From NCERT
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Which can be directly brought into gaseous state from solid state?

(1) CO

(2) Solid CO2

(3) PH3

(4) CO+H2

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 75%
From NCERT
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Under hydrolytic conditions, the compounds used for the preparation of the linear polymer and for chain termination, respectively, are

1.  CH3SiCl3 and SiCH34

2.  CH32SiCl2 and CH33SiCl

3.  CH32SiCl2 and CH3SiCl3

4.  SiC4 and CH33SiCl

Subtopic:  Compounds of Carbon, Preparations, Properties & Uses |
 79%
From NCERT
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Identify the correct statements from the following:

a. \(\mathrm{CO}_2(\mathrm{~g})\) is used as a refrigerant ice cream and frozen food.
b. The structure of \(\mathrm{C}_{60} \)  customs12 six carbon rings and 25 five carbon rings
c. ZSM-5, a type of zeolite, is used to convert alcohol into gasoline.
d. CO is a colorless and odorless gas.
 
1. (a) and (c) only 2. (b) and (c) only
3. (c) and (d) only 4. (a), (c) and (d) only
Subtopic:  Carbon Family - Preparations, Properties & Uses | Compounds of Carbon, Preparations, Properties & Uses |
 57%
From NCERT
NEET - 2020
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