Chemistry questions
29404 published questions with worked solutions.
- Match List-I with List-II. List-I (Compound): (A) BrF_ 5 (B) [CrF_ 6 ]^ 3- (C) O_ 3 (D) PCl_ 5 List-II (Shape): (I) bent (II)...
- Match List-I with List-II. List-I (Processes/ Reactions): (A) 2SO_ 2 (g) + O_ 2 (g) 2SO_ 3 (g) (B) 4NH_ 3 (g) + 5O_ 2 (g) 4NO(g)...Not in JEE Main or NEET syllabus
- Given two statements below: Statement I : In Cl_ 2 molecule the covalent radius is double of the atomic radius of chlorine....
- Refining using liquation method is the most suitable for metals with:Not in JEE Main or NEET syllabus
- Reaction of BeCl_ 2 with LiAlH_ 4 gives : (A) AlCl_ 3 (B) BeH_ 2 (C) LiH (D) LiCl (E) BeAlH_ 4 Choose the correct answer from...Not in JEE Main or NEET syllabus
- Which of the given reactions is not an example of disproportionation reaction?
- The dark purple colour of KMnO_ 4 disappears in the titration with oxalic acid in acidic medium. The overall change in the...
- Cl• + CH_ 4 A + B. A and B in the above atmospheric reaction step are:
- Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p-nitrophenol and picric acid ?
- The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to:
- Stearic acid and polyethylene glycol react to form which one of the following soap/s detergents?Not in JEE Main or NEET syllabus
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :...
- Chlorophyll extracted from the crushed green leaves was dissolved in water to make 2 L solution of Mg of concentration 48 ppm....
- 2.4 g coal is burnt in a bomb calorimeter in excess of oxygen at 298 K and 1 atm pressure. The temperature of the calorimeter...
- When 800 mL of 0.5 M nitric acid is heated in a beaker, its volume is reduced to half and 11.5 g of nitric acid is evaporated....
- At 298 K, the equilibrium constant is 2 10^ 15 for the reaction: Cu(s) + 2Ag^ + (aq) Cu^ 2+ (aq) + 2Ag(s). The equilibrium...
- The amount of charge in F (Faraday) required to obtain one mole of iron from Fe_ 3 O_ 4 is _____. (Nearest integer)
- For a reaction A 2B + C the half lives are 100 s and 50 s when the concentration of reactant A is 0.5 and 1.0 mol L^ -1...
- The difference between spin only magnetic moment of [Co(H_ 2 O)_ 6 ]Cl_ 2 and [Cr(H_ 2 O)_ 6 ]Cl_ 3 is _____ .
- In the presence of sunlight, benzene reacts with Cl_ 2 to give product X. The number of hydrogens in X is _____ .