Chemistry questions
29404 published questions with worked solutions.
- (methoxy-benzyl chloride + Nu → (I)) and (nitro-benzyl chloride + Nu → (II)) where Nu = Nucleophile. Find out the correct...
- Match List-I with List-II: List-I: A. K B. KCl C. KOH D. Li List-II: I. Thermonuclear reactions II. Fertilizer III. Sodium...Not in JEE Main or NEET syllabus
- o-Phenylenediamine HNO_2 'X' Major Product. 'X' is
- 25 mL of silver nitrate solution (1M) is added dropwise to 25 mL of potassium iodide (1.05 M) solution. The ion(s) present in...
- Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction. (a) 1-naphthol (b)...
- The polymer X-consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and...Not in JEE Main or NEET syllabus
- The set which does not have ambidentate ligand(s) is :
- When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic medium, a dark...
- In the extraction process of copper, the product obtained after carrying out the reactions (i) 2Cu_2S+3O_2 2Cu_2O+2SO_2 (ii)...Not in JEE Main or NEET syllabus
- For elements B, C, N Li, Be, O and F, the correct order of first ionization enthalpy is :
- Thin layer chromatography of a mixture shows the following observation: [spots A, B, C at different Rf] The correct order of...
- (crotonaldehyde-type, y mole) [H_3O^+] x mol of MeMgBr (tertiary alcohol product) The ratio x/y on completion of the above...
- Solid fuel used in rocket is a mixture of Fe_2O_3 and Al (in ratio 1 : 2). The heat evolved (kJ) per gram of the mixture is _____...
- The ratio of spin-only magnetic moment values _ eff [Cr(CN)_6]^ 3- / _ eff [Cr(H_2O)_6]^ 3+ is _____ .
- 0.004 M K_2SO_4 solution is isotonic with 0.01 M glucose solution. Percentage dissociation of K_2SO_4 is _____ (Nearest integer)
- KClO_3+6FeSO_4+3H_2SO_4 KCl+3Fe_2(SO_4)_3+3H_2O The above reaction was studied at 300 K by monitoring the concentration of FeSO_4...
- An atomic substance A of molar mass 12 g mol^ -1 has a cubic crystal structure with edge length 300 pm. The no. of atoms present...Not in JEE Main or NEET syllabus
- In an electrochemical reaction of lead, at standard temperature, if E^0_ (Pb^ 2+ /Pb) = m Volt and E^0_ (Pb^ 4+ /Pb) = n Volt,...
- A solution of sugar is obtained by mixing 200 g of its 25% solution and 500 g of its 40% solution (both by mass). The mass...
- (bicyclic methyl-substituted cyclohexanol) HBr 'A' Major Product The number of hyperconjugation structures involved to stabilize...