19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Very pure hydrogen (99.9%) can be made by which of the following processes?
Pure nascent hydrogen is best obtained by
Which of the following metals does not liberate hydrogen from acids?
The process of production of syngas coal is quite common these days. The production of syngas from coal is called
Water gas is mixed with steam and the mixture is passed over heated Fe2O3 in presence of Cr2O3. The mixture when passed in water dissolves CO2 and dihydrogen left undissolved is collected. This method of preparation o…
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
Which of the following statement is correct regarding properties of hydrogen?
Hydrogen does not possess the metallic characteristics under normal conditions because
Which of the following statements regarding hydrides is not correct?
Carbon hydride of the type, CnH2n+2 do not act as Lewis acid or Lewis base. They behave as normal covalent hydrides because
Which of the following hydrides is electron deficient?
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,…
Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called
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
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