Chemistry Question Bank

In which of the following reactions H2O acts as a bronsted acid? (a) 3 aq aq 4 aq H O NH OH NH l (b) aq aq aq H O H S H O HS l (c) aq aq H O H O H O OH l l (d) aq aq H OH H O ( ) ( ) l

How many hydrogen bonded water molecules are associated with CuSO4.5H2O?

The maximum number of hydrogen bonds formed by a water molecule in ice is

Hydrolysis of SiCl4 gives

Which of the following metals directly combine with hydrogen gas to give a hydride?

Metallic hydrides are

Ionic hydrides react with water to give

On reaction with water, which of the following does not produce any hydride? (a) CaH (b) Be C (c) Mg N (d) Ca P

Metal hydrides may be ionic, covalent or molecular in nature. Among LiH,NaH,KH,RbH,CsH the correct order of increasing ionic character is

Earlier, it was thought that in the non-stoichiometric hydrides, hydrogen occupies interstices in the metal lattice producing distortion without any change in its type. Consequently, they were termed as ………X…….. Here,…

CH ,NH ,H O and HF are the example of

NaH s H O NaOH aq H g -> and 8LiH Al Cl 2LiAlH 6LiCl -> In the above reaction, NaH and LiH are the examples of

…….X….. are crystalline, non-volatile and non- conducting in solid state. (X) Melts conduct electricity and on electrolysis liberate dihydrogen gas at anode. Here, X refers to

Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called

Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH

Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form

If a mole of hydrogen molecule is heated to a high temperature, then which of the following reaction take place ? (a) 2 g g g H 436kJmol H H -> (b) 2 g 2 g 2H 820kJmol 2H -> (c) 2 g 2 g g g H H 436kJmol …

30 volume hydrogen peroxide means (UK PMT 2014)

Zn 2NaOH aq X H -> What is (X) in the above reaction?

Hydrogen is prepared by the reaction of

In what respect electronic configuration of hydrogen and halogens are similar?

In which of the following properties hydrogen does not show similarity with alkali metals?

Which of the following is an atom of tritium? (a) (b) (c) (d)

The isotopes of hydrogen have different physical properties due to difference in mass. They have almost same chemical properties with a difference in their rates of reactions which is mainly due to

Deuterium is