19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The density of water is less in its solid state because
Hydrolysis of SiCl4 gives
The maximum number of hydrogen bonds formed by a water molecule in ice is
How many hydrogen bonded water molecules are associated with CuSO4.5H2O?
Liquid water is denser than ice due to
The HOH angle in water molecule is about
What is meant by demineralized water ?
Which one of the following statements about water is FALSE?
What is the reaction given below called? aq aq H O H O H O OH l l
The ionization of hydrogen atom would give rise to (AIPMT 1990)
Which one of the following statements is incorrect with regard to ortho and para dihydrogen? (Kerala CEE 2009)
Which gas is produced when calcium nitride (Ca3N2) is hydrolysed by water?
Some statements about heavy water are given below. (i) Heavy water is used as moderator in nuclear reactors. (ii) Heavy water is more associated than ordinary water. (iii) Heavy water is more effective solvent than or…
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
Non-stoichiometric hydrides are produced by
Which of the following statements regarding hydrides is not correct?
On moving from left to right in a period what is the order of acidic character of hydrides?
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
Dihydrogen forms three types of hydrides. (i) hydrides are formed by alkali metals and alkaline earth metals. (ii) hydrides are formed by non-metals and (iii) hydrides are formed by d and f-block elements at elevated …
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
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,…
Ionic hydrides react with water to give