Chemistry questions
29404 published questions with worked solutions.
- An organic compound undergoes first order decomposition. If the time taken for the 60% decomposition is 540 s, then the time...
- A short peptide on complete hydrolysis produces 3 moles of glycine (G), two moles of leucine (L) and two moles of valine (V) per...
- The electrode potential of the following half cell at 298 K X|X^ 2+ (0.001M)||Y^ 2+ (0.01M)|Y is _________ 10^ -2 V (Nearest...
- The graph of x m vs log p for an adsorption process is a straight line inclined at an angle of 45° with intercept equal to...Not in JEE Main or NEET syllabus
- Iron oxide FeO, crystallises in a cubic lattice with a unit cell edge length of 5.0 Å. If density of the FeO in the crystal is...Not in JEE Main or NEET syllabus
- Lead storage battery contains 38% by weight solution of H_2SO_4. The van't Hoff factor is 2.67 at this concentration. The...
- The strength of 50 volume solution of hydrogen peroxide is _________g/L (Nearest integer). Given : Molar mass of H_2O_2 is 34 g...
- Consider the following equation : 2SO_2(g)+O_2(g) 2SO_3(g), H = –190 kJ The number of factors which will increase the yield of...
- During the qualitative analysis of SO_3^ 2- using dilute H_2SO_4, SO_2 gas evolved which turns K_2Cr_2O_7 solution (acidified...
- In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group...
- Amongst the following compounds, which one is an antacid ?Not in JEE Main or NEET syllabus
- The alkaline earth metal sulphate (s) which are readily soluble in water is/are : A. BeSO_4 B. MgSO_4 C. CaSO_4 D. SrSO_4 E....Not in JEE Main or NEET syllabus
- Formation of photochemical smog involves the following reaction in which A, B and C are respectively. (i) NO_2 h A + B (ii) B +...
- For OF_2 molecule consider the following A. Number of lone pairs on oxygen is 2. B. FOF angle is less than 104.5°. C. Oxidation...
- Match List-I with List-II. List-I: A. (chlorobenzene + CH_3Cl with Na) B. (chlorobenzene + 2Na) C. (diazonium chloride with...
- Given below are two statements : one is labelled as Assertion(A) and the other is labelled as Reason (R). Assertion (A) : In...Not in JEE Main or NEET syllabus
- To inhibit the growth of tumours, identify the compounds used from the following : (A) EDTA (B) Coordination Compounds of Pt (C)...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) :...
- What is the correct order of acidity of the protons marked A-D in the given compounds?
- In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica toNot in JEE Main or NEET syllabus