Physical Properties of Sulphuric Acid

Q.

Is hydrogen sulfide an acid?

Q.

Is it possible to displace hydrogen from acids or water by metals like platinum and gold? If not, why?

Q.

Write the arrangement of metals Zn, Fe, Mg and Na in a decreasing order of their reactivity towards water.

1. Na> Mg> Zn> Fe

2. Fe < Mg <Zn<Na

3. Mg > Na> Zn > Fe

4. none of these

Q.

Metals which are less reactive than Hydrogen $\left(\mathrm{H}\right)$ displace Hydrogen $\left(\mathrm{H}\right)$ from acids.

1. True
2. False

Q.

In comparison to water, which of these is true about sulphuric acid?

1. Water has a higher boiling point than sulphuric acid.
2. The melting point of sulphuric acid is higher than water.
3. Both water and sulphuric acid are liquid at room temperature.
4. The density of water is lower than that of sulphuric acid.

Q.

More electropositive metal displace ___ from the acidic solution.

Q. Concentrated aqueous sulpheric acid is 98%of H2SO4 by mass and has density of 1. 80gmL-1volume of acid required to make one litre of 0. 01 m H2S04 solution is

Q.

The king of chemicals is viscous and pale orange in colour.

1. False

2. True

Q. calculate the degree of ionization of 0.05M acetic acid if Pka =4.14 how is the degree of dissociation affected what its solution is also 0.01 M

Q.

Which of the following statement is incorrect regarding sulphuric acid?

1. It is highly corrosive in nature
2. It is light green in colour
3. It is denser than water
4. It is highly soluble in water

Q.

Which of the following statement is incorrect regarding sulphuric acid?

1. It is highly soluble in water
2. It is highly corrosive in nature
3. It is light green in colour
4. It is denser than water

Q. Choose whether true or false:-
The glass container may breaks when water is added to concentrated acid.

1. True
2. False

Q. in a titration, 60 mL of Phosphoric acid (H3PO4) completely nutralizes 750 mL of sodium carbonate solution containing 3.18 gm of NA2CO3 in one litre solution. calculate the molarity of phosphoric acid.

Q. ntConcentrated aqueous sulphuric acid is 98% H2SO4 by mass and has density 1.8 gmL1. Volume of acid required to make 1 L of 0.1 M H2SO4 is?n ntn

Q.

What is the colour of pure sulphuric acid

1. White

2. Blue

3. Green

4. Colorless

Q. Which of the following is responsible for turning moist starch iodide paper blue when it is brought in contact with ozone 1. Liberatio of iodine 2 .liberatuon of oxygen 3 formation of alkali 4. All of these

Q. (a) An organic compound $X$ of molecular formula $C_2{H}_4{O}_2$ gives brisk effervescence with sodium hydrogencarbonate. Give the name and formula of $X$.
(b) A mixture of ethyne (acetylene) and oxygen is burnt for welding. Can you tell why a mixture of ethyne and air is not used?
(c) Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).