Chemistry questions
29404 published questions with worked solutions.
- A student has studied the decomposition of a gas AB_3 at 25°C. He obtained the following data. p(mmHg): 50,100,200,400; relative...
- Total number of tripeptides possible by mixing of valine and proline is_________
- Sum of - bonds present in peroxodisulphuric acid and pyrosulphuric acid is _________
- The total pressure observed by mixing two liquids A and B is 350 mm Hg when their mole fractions are 0.7 and 0.3 respectively....
- If the pKa of lactic acid is 5, then the pH of 0.005 M calcium lactate solution at 25° C is _____ 10^ -1 (Nearest integer)
- The number of statement/s which are the characteristics of physisorption is _________ A. It is highly specific in nature B....Not in JEE Main or NEET syllabus
- The number of statement/s, which are correct with respect to the compression of carbon dioxide from point (a) in the Andrews...
- The number of units, which are used to express concentration of solutions from the following is______ Mass percent, Mole, Mole...
- Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values shown by...Not in JEE Main or NEET syllabus
- In the depression of freezing point experiment A. Vapour pressure of the solution is less than that of pure solvent B. Vapour...
- The magnetic moment of a transition metal compound has been calculated to be 3.87 B.M. The metal ion is
- Which of the following is true about freons?
- Increasing order of stability of the resonance structures is: [four resonance structures A, B, C, D of an , -unsaturated...
- Assertion A: Hydrolysis of an alkyl chloride is a slow reaction but in the presence of NaI, the rate of hydrolysis increases....
- Match List-I with List-II List-I: A. Reverberatory furnace B. Electrolytic cell C. Blast furnace D. Zone refining furnace...Not in JEE Main or NEET syllabus
- Decreasing order of the hydrogen bonding in following forms of water is correctly represented by A. Liquid water B. Ice C. Impure...
- An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is
- Order of covalent bond : A. KF > KI; LiF > KF B. KF < KI; LiF > KF C. SnCl_4 > SnCl_2; CuCl > NaCl D. LiF > KF; CuCl < NaCl E. KF...
- The d-electronic configuration of [CoCl_4]^ 2- in tetrahedral crystal field is e^mt_2^n. Sum of "m" and "number of unpaired...
- The dissociation constant of acetic acid is x 10^ -5 . When 25 mL of 0.2 M CH_3COONa solution is mixed with 25 mL of 0.02 M...