Question

B. Choose the correct answer from the options given below.
saction
1. How is hydrogen gas prepared in the laboratory collected?
a. By upward displacement of water b. By upward displacement of air
C. By downward displacement of water d. By downward displacement of air
2. Water-gas is a mixture of which of the following?
a. Hydrogen and carbon dioxide
b. Hydrogen and carbon monoxide
C. Hydrogen and water
d. Hydrogen and steam
3. Which of the following metals is used for the laboratory preparation of hydrogen?
a. Zinc
b. Iron
d. Lead
4. By which process is ammonia gas manufactured?
a. Haber process
b. Haber-Bosch process
C. Bosch's process
d. Sabatier process
5. What does hydrogen with carbon dioxide under the action of high pressure, temperature,
and nickel catalyst produce?
a. Water
b. Hydrogen sulphide
C. Methane
d. Ammonia
c. Tin​

Answer 1

Answer:

hydrogen and carbon dioxide

Answer 2

in your 1 question there should be option of Hydrogen is collected by downward displacement of water and not of air, even though it is lighter than air. this option will be correct

2) b) Carbon monoxide and hydrogen

3) zinc and iron material

4) Haber process also known as Haber - bosh process

5) Tin

5 th one I am not sure

hope it will help you !