19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form
Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH
Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called
When CO2 is bubbled through a solution of barium peroxide in water (AFMC 2005)
Which of the following hydrides is electron deficient?
…….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
How many hydrogen bonded water molecules are associated with CuSO4.5H2O?
What is the volume of “20 volume H2O2” required to get 5000 cm3 of oxygen at STP ?
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 gas in insoluble in water?
Which of the following is not a property of hydrogen?
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
On burning hydrogen in air, the colour of flame is
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?
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…
Hydrogen does not possess the metallic characteristics under normal conditions because
Which of the following metals will react with NaOH and KOH to liberate hydrogen gas?
Why does H+ ion always get associated with other atoms or molecules?
Which of the following statements is correct regarding hydrogen?
The process of production of syngas coal is quite common these days. The production of syngas from coal is called
The production of dihydrogen obtained from coal gasification can be increased by reacting carbon monoxide of syngas mixture with steam in presence of a catalyst iron chromate. What is this process called?