Chemistry questions
29404 published questions with worked solutions.
- 116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the...
- Consider the following set of quantum numbers. (A) n = 3, l = 3, m_l = −3 (B) n = 3, l = 2, m_l = −2 (C) n = 2, l = 1, m_l = +1...
- A solution containing 2.5 10^ -3 kg of a solute dissolved in 75 10^ -3 kg of water boils at 373.535 K. The molar mass of the...
- pH value of 0.001 M NaOH solution is _____.
- For the reaction taking place in the cell: Pt(s) |H_ 2 (g) |H^ + (aq) || Ag^ + (aq) | Ag(s) E°_cell = +0.5332 V. The value of _...
- It has been found that for a chemical reaction with rise in temperature by 9 K the rate constant gets doubled. Assuming a...
- 0.25 g of an organic compound containing chlorine gave 0.40 g of silver chloride in Carius estimation. The percentage of chlorine...
- Based upon VSEPR theory, match the shape (geometry) of the molecules in List-I with the molecules in List-II and select the most...
- Match List-I with List-II List-I: (A) Spontaneous process (B) Process with P = 0, T = 0 (C) H_ reaction (D) Exothermic process...
- Match List-I with List-II List-I: (A) Lyophilic colloid (B) Emulsion (C) Positively charged colloid (D) Negatively charged...Not in JEE Main or NEET syllabus
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The...
- Match List-I with List-II. List-I: (A) Concentration of Gold ore (B) Leaching of alumina (C) Froth stabilizer (D) Blister copper...Not in JEE Main or NEET syllabus
- BeCl_ 2 reacts with LiAlH_ 4 to give:Not in JEE Main or NEET syllabus
- Heating white phosphorus with conc. NaOH solution gives mainly:
- Which of the following will have maximum stabilization due to crystal field?
- If the uncertainty in velocity and position of a minute particle in space are, 2.4 10^ -26 (m s^ -1 ) and 10^ -7 (m)...
- 2 g of a non-volatile non-electrolyte solute is dissolved in 200 g of two different solvents A and B whose ebullioscopic...
- 2NOCl(g) 2NO(g) + Cl_ 2 (g) In an experiment, 2.0 moles of NOCl was placed in a one-litre flask and the concentration of NO after...
- The limiting molar conductivities of NaI, NaNO_ 3 and AgNO_ 3 are 12.7, 12.0 and 13.3 mS m^ 2 mol^ -1 , respectively (all at...
- The rate constant for a first order reaction is given by the following equation : ln K = 33.24 - 2.0 10^ 4 K/T. The activation...