Chemistry questions
29404 published questions with worked solutions.
- Spin only magnetic moment in BM of [Fe(CO)_4(C_2O_4)]^+ is :
- Assertion (A) : Lithium salts are hydrated. Reason (R) : Lithium has higher polarizing power than other alkali metal group...Not in JEE Main or NEET syllabus
- Which among the following is not a polyester ?Not in JEE Main or NEET syllabus
- Which one of the following correctly represents the order of stability of oxides, X_2O; (X = halogen) ?
- Match List-I with List-II : List-I (Metal Ion): (a) Mn^ 2+ (b) As^ 3+ (c) Cu^ 2+ (d) Al^ 3+ List-II (Group in Qualitative...
- The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :
- CH_4 is adsorbed on 1 g charcoal at 0°C following the Freundlich adsorption isotherm. 10.0 mL of CH_4 is adsorbed at 100 mm of...Not in JEE Main or NEET syllabus
- 1.22 g of an organic acid is separately dissolved in 100 g of benzene (K_b = 2.6 K kg mol^ -1 ) and 100 g of acetone (K_b = 1.7 K...
- The value of magnetic quantum number of the outermost electron of Zn^+ ion is_____.
- The empirical formula for a compound with a cubic close packed arrangement of anions and with cations occupying all the...Not in JEE Main or NEET syllabus
- In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud...Not in JEE Main or NEET syllabus
- The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x 10^ -4 . The value of x is_______. (Nearest...
- For the reaction A , the rate constant k(in s^ -1 ) is given by _ 10 k=20.35- 2.47 10^3 T The energy of activation in kJ mol^ -1...
- Sodium oxide reacts with water to produce sodium hydroxide. 20.0 g of sodium oxide is dissolved in 500 mL of water. Neglecting...
- According to molecular orbital theory, the number of unpaired electron(s) in O_2^ 2- is_____.
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Cu^ 2+ in...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A :...
- Which element is not present in Nessler's reagent ?
- Which one of the following sets of ions represents a collection of isoelectronic species ? (Given : Atomic Number : F : 9, Cl :...
- The correct order of bond enthalpy (kJ mol^ -1 ) is