Discovery and Occurence of Hydrogen

Q.

Describe a test for hydrogen?

Q.

Question 1
A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.

Q.

15. Name the scientist who discovered the following.

(b) Oxygen

Q.

Can we drink liquid oxygen?if no then why

Q.

Which of the following salts is not used in a salt bridge?

1. Ammonium chloride

2. Potassium chloride

3. Sodium chloride

4. Potassium nitrate

Q.

Why was hydrogen called 'inflammable air ' ?

Q. The sum of the number of neutrons and protons in the isotopes of hydrogen is:

1. 6
2. 5
3. 4
4. 3

Q.

What do you mean by brine?

Q.

State some sources of hydrogen.

Q.

Name the following.

The most abundant element in the universe

Q.

Name the gas which burns with a pop sound. Give a reaction through which it can be produced.

Q. In the Haber's process, the ratio of hydrogen and nitrogen used for the synthesis of ammonia is :

1. 1:3
2. 3:1
3. 1:4
4. 4:1

Q.

Who discovered the following:

Hydrogen

Q.

What is water gas used for?

Q.

Weight percentage of hydrogen in water:-

1. 11.1%

2. 88.8%

3. 78.4%

4. 20.4%

Q.

How many types of salts are their

Q. Which of the following does not contain hydrogen?​

1. Table salt
2. Water
3. Lemon juice
4. Vinegar

Q.

Which of the following substances is not combustible?

1. Phosphorus

2. Lead

3. Alcohol

4. Coal

Q. ______ is used as a fuel in spaceships and space shuttles. ​

1. Hydrogen
2. Nitrogen
3. Chlorine
4. Argon

Q.

Can you suggest me the best question bank or questions book for chemistry for advanced learning and for competitive exams

It must contain many qstions and

You can also suggest me if there is theory and lot of questions

Remember that I have completed all the ncert book and exemplar

Q.

Is there any difference between flammable and inflammable ?

Q.

Name the scientist who proved that hydrogen was a component of water.

Q. It is said that atmospheric pollution does not occur when Hydrogen is used as a fuel. What is the reason ?

Q.

Nonmetal X is the main component present in stars. Name the nonmetal X.

1. Oxygen

2. Nitrogen

3. Neon

4. Hydrogen

Q. The name hydrogen is been derived from the word:

1. Hydrogenes
2. Hydrogames
3. Hydroair
4. Hydrophobia

Q. Hydrogen has the least density among other elements.

1. True
2. False

Q.

H₂ is present in air then why it forms an explosive mixture with air when it is collected by downward displacement of air IN LABORATORY PREPARATION OF H₂

Q.

Study the picture with the image in the given question

Q.

Which of the following fuel doesn't contain Hydrogen gas?

1. Water gas

2. Liquid Hydrogen

3. Biogas

4. Coal Gas

Q. Hydrogen can be used in fuel cells to generate power.

1. True
2. False