19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following properties of hydrogen is incorrect?
Which of the following is not a property of hydrogen?
On burning hydrogen in air, the colour of flame is
Which of the following statements is correct regarding hydrogen?
Which of the following reactions of hydrogen with non- metals represents Haber‟s process ? (a) heat 2H O 2H O; H 285.9kJmol -> (b) 673K,Fe 200atm 3H N 2NH ; H 92.6kJmol -> (c) hv H Cl 2HCl -> (d) 1100 C 2H C C…
The order of reactivity of halogens towards hydrogen is
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 …
Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form
Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH
Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called
…….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
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
CH ,NH ,H O and HF are the example of
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,…
Metal hydrides may be ionic, covalent or molecular in nature. Among LiH,NaH,KH,RbH,CsH the correct order of increasing ionic character is
On reaction with water, which of the following does not produce any hydride? (a) CaH (b) Be C (c) Mg N (d) Ca P
Ionic hydrides react with water to give
Metallic hydrides are
Which of the following metals directly combine with hydrogen gas to give a hydride?
Which of the following hydrides is electron deficient?
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 statements regarding hydrides is not correct?
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
Non-stoichiometric hydrides are produced by
On moving from left to right in a period what is the order of acidic character of hydrides?