Hydrogen

Pure H2O2 is :

• Semi – solid

• Liquid

• Solid

• Gas

The freezing point of heavy water is

• 0°C

• 3.8°C

• 4°C

• 1°C

H2O2 used in rocket has the concentration:

• 50%

• 90%

• 70%

• 30%

Which of the following statements regarding hydrogen peroxide is/ are incorrect?

• As aerating agent in production of sponge rubber

• As an antichlor

• For restoring white colour of blackened lead painting

• All of the above

Atomic hydrogen is called

• Protium

• Deutrium

• Nascent Hydrogen

• Tritium

The property of hydrogen which distinguishes it from alkali metals

• its non-metallic character

• its reducing character

• its affinity for non metal

• its electropositive character

Hydrogen accepts one electron to form an inert gas configuration. In this it resembles

• chalcogens

• halogens

• alkali metals

• alkaline earth metals

Which one of the following is not an isotope of hydrogen?

• Ortho hydrogen

• Deuterium

• Tritium

• None of these

Hydrogen has how many isotopes?

• 3

• 4

• 2

• 1

Which one of the following is formed when zinc reacts with sodium hydroxide?

• Hydrogen gas

• Sodium zincate

• Both

• None of these