Bosch Method

Q.

How does Iron metal reacts with water? Write a balanced chemical equation.

Q.

What happens to the solubility of a saturated solution of NaCl, when a current of HCl gas is passed through it?

1. Decomposes NaCl

2. Remains unchanged

3. Increases

4. Decreases

Q.

Which of the following statement is not correct about the trends when going from left to right across the periodic table?

1. The elements become less metallic in nature.

2. The number of valence electrons increases.

3. The atoms lose their electrons more easily.

4. The oxides become more acidic.

Q.

Question 9 (a)

Pratyush took sulphur powder with a spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in figure below:

What will be the action of gas on:

(i) dry litmus paper?

(ii) moist litmus paper?

Q. Question 17

A shiny brown-colored element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.

Q. Difference between the action of concentrated acids and dilute acids on metals.

Q.

The Group 1 and Group 2 elements are highly electropositive elements.

1. True
2. False

Q.

During manufacture of Hydrogen through the Bosch Process, separation of carbon dioxide can be done by:

1. mixing the solution with excess steam

2. passing the solution through cold water under 30 atm

3. passing the solution through the ammoniacal cuprous chloride solution

4. passing the solution through caustic potash solution

Q.

Which of these metals displace hydrogen from dilute acids with explosive violence?

1. Potassium

2. Nickel

3. Iron

4. Sodium

Q.

In the manufacture of iron, a mixture of limestone, coke, and iron ore is added to the blast furnace. In this context give the equation for the reduction of the iron ore.

Q. Explain the Bosch process for the industrial preparation of hydrogen gas? [4 marks]

Q.

Why are catalytic converters fitted in new car?

Q. In a sample electron is jumps from 5th excited state to ground state then number for f spectral lines in n visible range will be

Q. In the modern periodic table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?

Q.

Which of the following statements is true if red hot iron is reacted with steam?

1. It forms triferric tetra oxide and releases hydrogen gas

2. It's a reversible reaction if hydrogen isn't separated

3. Iron is more reactive than zinc

4. Iron oxide formed reacts with hydrogen and reduces back to iron.

Q.

When steam is passed over red-hot coke it forms:

1. Syngas

2. $C{O}_2+H_2$

3. Water gas

4. $CO+H_2$

Q.

What happens when Magnesium reacts with hot water?

Q.

A small, heavy, positively charged mass at the centre of an atom is called __________.

Q. Which of the following are the stages in contact process?

1. Converter
2. Absorption tower.
3. All the above.
4. Burner

Q.

Which of the following statement is incorrect statement about the trend when going from left to right across the periods of modern periodic table?

1. The number of valence electron increases

2. The atoms lose their electrons more easily

3. The oxides become more acidic

4. The elements become less metallic in nature

Q. In Bosch's process, which gas is utilised for the production of hydrogen?

1. Producer gas
2. Water gas
3. Coal gas
4. Natural gas

Q. Bosch Process is used for the large-scale preparation of hydrogen. Give the necessary conditions.

Q. How many set of quantum numbers will be there in an atom, which contains total six electrons?

Q. Differentiate between hard coke and soft coke.

Q. Question 46
What is the role of metal or reagents written on arrows inthegiven chemical reactions?

Q. ntQ. In Bhor series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter -orbit jumps of the electron for Bhor orbits in an atom of hydrogen?n nt1) 3 to 1n nt2) 5 to 2n nt3) 2 to 5n nt4) 3 to 2n

Q. Write a brief note on electrons.

Q. What is Bosch's process?

Q. Very pure hydrogen is obtained by

1. Cracking of naphtha and fuel cell

2. Adding zinc granules to all acids

3. Reaction of coal or CO with steam

4. Electrolysis of warm, aqueous solution of Ba(OH)₂ between nickel electrodes

Q. Water gas is mixed with steam and the mixture is passed over heated $F{e}_2{O}_3$ in presence of $C{r}_2{O}_3.$
The mixture when passed in water dissolves $C{O}_2$ and dihydro gen left undissolved is collected. This method of preparation of hydrogen gas is known as:

1. Bosch process
2. Lane process
3. Kellner process
4. Hall process