Question

Water can be prepared in the laboratory _________.
(A) by burning hydrogen
(B) using Eudiometer
(C) both A & B
(D) none of the above

Answer 1

Hint: Oxygen and hydrogen atoms have to be present to produce water. It doesn't help to combine them together; they are always left with only separate atoms of hydrogen and oxygen. It is important to link the orbits of the electrons of each atom, and to do that it is necessary to have a sudden burst of energy to get these linked.

Complete step by step solution:
The effect of diluted sulfuric acid or diluted hydrochloric acid is usually included in laboratory preparation of hydrogen gas on zinc granules. For the preparation of hydrogen gas in chemical laboratories, granulated zinc is suitable since it typically contains a small amount of copper, which is capable of serving as a catalyst for the related chemical reaction, thereby increasing the rate of chemical reaction without actually participating. Below, an experimental technique is given for the laboratory preparation of hydrogen gas.
Laboratory Hydrogen Gas Preparation Protocol
Step 1: Take and put a few grams of zinc granules in a 500 mL flask.
Step 2: Apply diluted hydrochloric acid to the zinc granules with the aid of a thistle funnel. Diluted sulphuric acid may be used as an alternative if hydrochloric acid is not available.
Step 3: With the help of a delivery tube through the downward displacement of water, hydrogen gas will be automatically extracted. The fact that hydrogen gas is lighter than water may explain this.
The setup for preparing hydrogen gas for the laboratory is outlined below.
Also, by burning hydrogen and using an eudiometer, water can be prepared in the laboratory.
Hence, option B-by using an eudiometer Is the correct answer.

Note:
Hydrogen gas is a colourless gas that has no distinct scent. It is Sparingly soluble in water. Any variations in temperature do not affect the solubility of this gas in water too much. Below are some applications of hydrogen gas.
It is used to fill many balloons and airships with this gas.
It is also used for the hardening of oils from animals and some oils from vegetables.
Hydrogen gas in oxy-hydrogen blow pipes is commonly used as a fuel.