Chemistry questions
29404 published questions with worked solutions.
- The five successive ionization enthalpies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol ^ -1 . The number of valence...
- The strengths of 5.6 volume hydrogen peroxide (of density 1g/mL) in terms of mass percentage and molarity (M), respectively, are...
- For the reaction 2A + 3B + 3 2 C 3P , which statement is correct?
- 6.023 10^ 22 molecules are present in 10 g of substance 'x'. The molarity of a solution containing 5 g of substance 'x' in 2L...
- An acidic solution of dichromate is electrolyzed for 8 minutes using 2A current. As per the following equation Cr_2O_7^ 2-...
- The volume (in mL) of 0.1 N NaOH required to neutralise 10 mL of 0.1 N phosphinic acid is .................... .
- The number of C = O groups present in a tripeptide Asp — Glu — Lys is ..................... .
- If 250 cm ^3 of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution...
- Lassaigne's test is used for detection of:
- Given below are two statements: Statement (I): SiO_2 and GeO_2 are acidic while SnO and PbO are amphoteric in nature. Statement...
- The set of meta directing functional groups from the following sets is:
- Given below are two statements: one is labeled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In...
- The strongest reducing agent among the following is:
- Given below are two statements: Statement (I): A π bonding MO has lower electron density above and below the inter-nuclear axis....
- Given below are two statements: Statement (I): Both metals and non-metals exist in p and d-block elements Statement (II):...
- Given below are two statements: Statement I: Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl_2...
- [Co(NH_3)_6]^ 3+ and [CoF_6]^ 3- are respectively known as:
- Match List-I with List-II. List-I (Reactants): (A) Phenol, Zn/Δ (B) Phenol, CHCl_3, NaOH, HCl (C) Phenol, CO_2, NaOH, HCl (D)...
- The transition metal having highest 3rd ionization enthalpy is:
- The functional group that shows negative resonance effect is: