Chemistry questions
29404 published questions with worked solutions.
- Compound A gives D-Galactose and D-Glucose on hydroglysis. The compound A is :
- R-CN [ (ii) H_2O] (i) DIBAL-H R-Y Consider the above reaction and identify "Y"
- If the Thompson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been -
- Number of Cl = O bonds in chlorous acid, chloric acid and perchloric acid respectively are :
- Select the correct statements. (A) Crystalline solids have long range order. (B) Crystalline solids are isotropic. (C) Amorphous...Not in JEE Main or NEET syllabus
- The addition of silica during the extraction of copper from its sulphide ore :-Not in JEE Main or NEET syllabus
- The equilibrium constant for the reaction A(s) M(s)+ 1 2 O_2(g) is K_P = 4 At equilibrium, the partial pressure of O_2...
- When 400 mL of 0.2M H_2SO_4 solution is mixed with 600 mL of 0.1 M NaOH solution, the increase in temperature of the final...
- 10.0 mL of 0.05 M KMnO_4 solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate solution. The strength...
- The total number of electrons in all bonding molecular orbitals of O_2^ 2- is …….. .
- 2HA H_2A_2 2HA H^++A^-. Initial moles a× 50 100 , 0, 0. The vapour density of the mixture at equilibrium is found to give i...
- The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is .........degree. (Round off to the...
- For the first order reaction A 2B, 1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is...
- For the cell Cu(s) |Cu^ 2+ (aq) (0.1M) || Ag^+(aq) (0.01 M) | Ag(s) the cell potential E_1 = 0.3095 V. For the cell Cu(s) |Cu^ 2+...
- Match List I with List II. List-I (Species): (a) XeF_2 (b) XeO_2F_2 (c) XeO_3F_2 (d) XeF_4 List-II (Number of lone pairs of...
- In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
- Deuterium resembles hydrogen in properties but :Not in JEE Main or NEET syllabus
- Which refining process is generally used in the purification of low melting metals ?Not in JEE Main or NEET syllabus
- Four fused-ring alkaloid-type structures (A), (B), (C) and (D) are given (morphinan and indole-type frameworks). The correct...Not in JEE Main or NEET syllabus
- The major product of the following reaction is : CH_3-CH(CH_3)-CH_2-C(=O)-Cl [ (iii) NaNO_2,HCl] (i) alcoholic NH_3 (ii)...