Carbon Dioxide

Q. $1.520\text{g}$ of a hydroxide of a metal on ignition gave $0.995\text{g}$ of an oxide of the same metal. The equivalent weight of the metal is _______.

1. $1.90\text{g}$
2. $9.00\text{g}$
3. $0.995\text{g}$
4. $19.0\text{g}$

Q. In solid state, carbon dioxide is commonly called as:

1. dry $C{O}_2$
2. dry ice
3. carbon black
4. carbonic acid

Q. The solubility product of a sparingly soluble salt $BaS{O}_4$​ is $1.1\times {10}^{-10}$ at ${25}^{o}C$ . What will be the solubility of $BaS{O}_4$​ in presence of $0.02M$ $H_{2}S{O}_4$ ? (assume complete dissociation of $H_{2}S{O}_4)$

1. $2.25\times {10}^{-9}{\text{mol L}}^{-1}$
2. $5.5\times {10}^{-9}{\text{mol L}}^{-1}$
3. $7.5\times {10}^{-9}{\text{mol L}}^{-1}$
4. $1.5\times {10}^{-9}{\text{mol L}}^{-1}$

Q. Removal of carbondioxide from atmosphere takes place by a process known as photosynthesis. in this context complete the equation given below:
$C{O}_2+H_{2}O\to$

1. $H_{2}C{O}_3$
2. $O_2$
3. $C_6{H}_{12}{O}_6$
4. (b) and (c) above.

Q.

State the importance and uses of carbon dioxide.

Q.

Write any four uses of Carbon dioxide.

Q. In solid state, carbon dioxide is commonly called as:

1. dry $C{O}_2$
2. dry ice
3. carbon black
4. carbonic acid

Q.

Write the physical properties of carbon dioxide.

Q. $H_{2}S{O}_4$ is not used for preparation of $C{O}_2$ from marble chips because

1. huge amount of heat is evolved
2. calcium sulphate is sparingly soluble and gets deposited on marble chips and stops the reaction.
3. the reaction is vigorous
4. it does not react

Q. When 0.4 mols of $A{l}_2{O}_3$ is heated with carbon, a brown solid X is formed along with evolution of a neutral gas which burns with blue flame.
What amount (in gm) of methane gas will be formed when X so formed is completely hydrolyzed with water?

Q. The species present in the solution when $C{O}_2$ is dissolved in water are:

1. $C{O}_2,H_{2}C{O}_3,HC{O}_3^{-},C{O}_3^{2-}$
2. $H_{2}C{O}_3,C{O}_3^{2-}$
3. $C{O}_3^{2-},HC{O}_3^{-}$
4. $C{O}_2,H_{2}C{O}_3$

Q.

Identify the correct order of acidic strength of $C{O}_2$, $CuO$, $CaO$, and $H_{2}O$:

1. $CaO<CuO<H_{2}O<C{O}_2$

2. $H_{2}O<CuO<CaO<C{O}_2$

3. $CaO<H_{2}O<CuO<C{O}_2$

4. $H_{2}O<C{O}_2<CaO<CuO$

Q. $B_2{H}_6$ reacts with $O_2$ and $H_{2}O$ respectvely to form:

1. $H_{3}B{O}_3$
2. $B_2{O}_3$
3. $HB{O}_2$
4. $B$

Q. Carbon dioxide molecule contains

1. single covalent bond
2. double covalent bond
3. triple covalent bond
4. ionic bond

Q. $H_{2}S{O}_4$ is not used for preparation of $C{O}_2$ from marble chips because

1. it does not react
2. huge amount of heat is evolved
3. the reaction is vigorous
4. calcium sulphate is sparingly soluble and gets deposited on marble chips and stops the reaction.

Q. Dry ice is

1. $\text{solid}N{H}_3$
2. $\text{solid}S{O}_2$
3. $\text{solid}C{O}_2$
4. $\text{solid}{N}_2$

Q.

In $C{O}_2$, hybridization of carbon is:

1. $sp$

2. $s{p}^2$

3. $s{p}^3$

4. $Noneofthese$

Q. Which of the following is/are the use(s) of $H_2{O}_2$?

1. Bleaching agent
2. Rocket propellent
3. Sewage water treatment
4. mild disinfectant

Q. Which of the following is not true about structure of carbon dioxide?

1. In $C{O}_2$, carbon is sp-hybridised
2. C forms two sigma bonds one with each oxygen atom and two $p\pi -p\pi$ bonds
3. $C{O}_2$ is a linear covalent compound
4. It is a polar molecule

Q. Removal of carbondioxide from atmosphere takes place by a process known as photosynthesis. in this context complete the equation given below:
$C{O}_2+H_{2}O\to$

1. $H_{2}C{O}_3$
2. $C_6{H}_{12}{O}_6$
3. $O_2$
4. (b) and (c) above.

Q. Carbon dioxide can be used _________.

1. as a refrigerant for frozen foods
2. as fire extinguisher
3. to manufacture urea
4. to manufacture acetone

Q.

Match the following.

Column A	Column B
1. preservation	A. source of nitrogen
2. fire extinguisher	B. argon gas
3. nitrates	C. carbon monoxide
4. electric bulb	D. neon gas
5. incomplete combustion of fossil fuels	E. CNG
	F. nitrogen
	G. carbon dioxide

Q.

Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which of the following is the best absorbing material for the carbon dioxide?

1. Heated copper oxide

2. Cold, solid calcium chloride

3. Cold, solid calcium hydroxide

4. Heated charcoal