Chemistry Question Bank

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,…

CH ,NH ,H O and HF are the example of

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

…….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

Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called

Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH

Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form

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 …

The order of reactivity of halogens towards hydrogen 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…

Which of the following statements is correct regarding hydrogen?

On burning hydrogen in air, the colour of flame is

Which of the following is not a property of hydrogen?

Which of the following properties of hydrogen is incorrect?

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 gas in insoluble in water?

Hydrogenation of vegetable oils using nickel as a catalyst gives edible fats which is/are known as

The chemical reactions of dihydrogen are accomplished by

Name the gas, which is colourless, odourless, tasteless, combustible, lighter than air and insoluble in water.

Why does H+ ion always get associated with other atoms or molecules?

Hydrogen does not possess the metallic characteristics under normal conditions because

Which of the following statement is correct regarding properties of hydrogen?

In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?

Water gas is mixed with steam and the mixture is passed over heated Fe2O3 in presence of Cr2O3. The mixture when passed in water dissolves CO2 and dihydrogen left undissolved is collected. This method of preparation o…