19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
Why does H+ ion always get associated with other atoms or molecules?
Name the gas, which is colourless, odourless, tasteless, combustible, lighter than air and insoluble in water.
The chemical reactions of dihydrogen are accomplished by
Hydrogenation of vegetable oils using nickel as a catalyst gives edible fats which is/are known as
Which of the following gas in insoluble in water?
ZnO Cu CO H ->product. Identify the product formed in the given reaction. (a) CH COOH (b) CO (c) C O (d) CH OH
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 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
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
The formula of exhausted permutit is
Which of the following is a true structure of H2O2 in solid phase ? (a) (b) (c) (d)
When CO2 is bubbled through a solution of barium peroxide in water
Which of the following metals evolves hydrogen on reacting with cold dilute HNO3? (AIPMT 1989)
The ionization of hydrogen atom would give rise to (AIPMT 1990)
Hydrogen peroxide molecules are (AIPMT 1991)
At its melting point, ice is lighter than water because (AIPMT 1992)