19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
The O – O – H bond angle in H2O2(g) is about (AIPMT 1994)
Water gas is produced by (AIPMT 1992)
Hydrogen sulphide is acidic while water is neutral. The reason is (RPMT 2010)
One would expect proton to have very large (AIPMT 1993)
The moderator used in nuclear reactor is (UP CPMT 2014)
The laboratory method for the preparation of H2O2 is by (UP CPMT 2014)
The HOH angle in water molecule is about
Assertion (A): The crystalline form of water is ice. Reason (R): At atmospheric pressure ice crystallizes in the hexagonal form but at very low temperature it condenses to the cubic form.
In complex hydrides, hydride ions act as ligand and are coordinated to metal ions. These hydrides are good reducing agents. Which of the following hydrides is not complex hydride ?
From group 6 only one metal forms hydride. This metal is
What is the trend of boiling points of hydrides of N, O and F?
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 …
On moving from left to right in a period what is the order of acidic character of hydrides?
Non-stoichiometric hydrides are produced by
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
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?