Hydrogen Test 3...

In the earth’s atmosphere, hydrogen exists in the form of

presence of extensive hydrogen bonding between water molecules leads to

Temporary hardness It can be removed in boiling by precipitating

Which of the following equations depict the oxidising nature of H₂O₂?

H₂O₂ as an antispectic is used in the name of

Heavy hydrogen is also called

For moderation of the climate and body temperature of living beings, the responsible factor is:

In Calgon’s method, one of the following chemical is used to remove hardness of water

Which of the following equation depicts reducing nature of H₂O₂?

Rocket fuel used in space research is

Approximately what percent of matter in the universe is believed to consist of hydrogen?

In the gas phase water is a bent molecule with a bond angle of

The three isotopes of hydrogen in terms of chemical properties show one of the following properties

H₂O₂ behaves as a bleaching agent because:

Stoichiometric compounds of dihydrogen are formed with

Covalent bond is stronger than Hydrogen bonding about

Water behaves as an amphoteric substance because

Consider the reactions

(A) H₂O₂ + 2HI → I₂ +2H₂O 
(B) HOCl + H₂O₂ → H₃O + Cl - -  + O₂

 Which of the following statements is correct about H₂O₂ with reference to these reactions? Hydrogen perioxide is ________.

Which of the following statements are not true for hydrogen?

One of the following is a non-stoichiometric hydride

Dihydrogen under certain reaction conditions, combines with almost all elements to form binary compounds, called hydrides except with few which are given below Choose one of the options

How many hydrogen-bonded water molecule(s) are associated in  CuSO4 . 5H₂O ?

Calculate the strength of 5 volume H₂O₂ solution.

Dihydrogen can be prepared on commercial scale by different methods. In its preparation by the action of steam on hydrocarbons, a mixture of CO and   H₂  gas is formed. It is known as ____________.

Atoms like N, O and F in hydrides have lower boiling points than those of the subsequent group member hydrides. It is because of