Chemistry questions
29404 published questions with worked solutions.
- A metal surface of 100 cm^2 area has to be coated with nickel layer of thickness 0.001 mm. A current of 2A was passed through a...
- For the given reaction CH_3-C(CH_3)(OH)-CH(H_3C)-C(=O)-CH_3 [ ] H^+ 'A' The total number of possible products formed by tertiary...
- A_2+B_2 2AB, H_f = –200 KJ mol^ -1 AB, A_2 and B_2 are diatomic molecules. If the bond enthalpies of A_2, B_2 and AB are in the...
- 20 mL of calcium hydroxide was consumed when it was reacted with 10 mL of unknown solution of H_2SO_4. Also 20 mL standard...
- Solution of 12 g of non-electrolyte (A) prepared by dissolving it in 1000 mL of water exerts the same osmotic pressure as that of...
- The product formed in the following multistep reaction is : (propene [ (iii) PCC (iv) CH_3MgBr] (i) B_2H_6 (ii) H_2O_2,NaOH )
- Which of the following statement(s) is/are correct ? (A) The pH of 1 10^ -8 M HCl solution is 8 (B) The conjugate base of...
- Which is not true for arginine ?
- The number of P – O – P bonds in H_4P_2O_7, (HPO_3)_3 and P_4O_ 10 are respectively
- The possibility of photochemical smog formation will be minimum atNot in JEE Main or NEET syllabus
- The complex with highest magnitude of crystal field splitting energy ( _0) is
- Which of the following statement is correct for paper chromatography ?
- Given below are two statements Statement I : According to Bohr's model of hydrogen atom, the angular momentum of an electron in a...
- Which one of the following is not an example of calcination ?Not in JEE Main or NEET syllabus
- Consider the following statement (A) NF_3 molecules has a trigonal planar structure. (B) Bond length of N_2 is shorter than O_2....
- Which of the following expressions is correct in case of a CsCl unit cell (edge length 'a')?Not in JEE Main or NEET syllabus
- Decreasing order of reactivity towards electrophilic substitution for the following compounds is (toluene-like with CH3, OCH3,...
- In Chromyl chloride, the oxidation state of chromium is (+) ___________.
- The vapour pressure of 30% (w/v) aqueous solution of glucose is _________mm Hg at 25°C. [Given: The density of 30% (w/v), aqueous...
- The volume (in mL) of 0.1 M AgNO_3 required for complete precipitation of chloride ions present in 20 mL of 0.01 M solution of...