19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Radioactive isotope of hydrogen is (RPMT 2007)
The formula of Calgon, used for water softening is (EAMCET 2007)
Hardness of water is due to the presence of salts of (AMU 2007)
How many ‘mL’ of perhydrol is required to produce sufficient oxygen which can be used to completely convert 2 L of SO2 gas? (BITSAT 2007)
How many neutrons are present in tritium nucleus? (RPMT 2006)
When CO2 is bubbled through a solution of barium peroxide in water (AFMC 2005)
The hardness of water is estimated by (Manipal 2004)
Which one of the following pairs of substances on reaction will not evolve H2 gas? (AIPMT 1998)
The volume strength of 1.5 N H2O2 solution is (AIPMT 1997)
Which of the following groups of ions makes the water hard? (AIPMT 1994)
One would expect proton to have very large (AIPMT 1993)
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?
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 …
What is the trend of boiling points of hydrides of N, O and F?
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,…