Chemistry

20 chapters 515 solved questions 21 tests

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Chapters

1. 1 Some Basic Concepts in Chemistry 21 Q · Test
2. 2 Atomic Structure 17 Q · Test
3. 3 Chemical Bonding and Molecular Structure 46 Q · Test
4. 4 Chemical Thermodynamics 23 Q · Test
5. 5 Solutions 19 Q · Test
6. 6 Equilibrium 29 Q · Test
7. 7 Redox Reactions and Electrochemistry 31 Q · Test
8. 8 Chemical Kinetics 23 Q · Test
9. 9 Classification of Elements and Periodicity in Properties 27 Q · Test
10. 10 p-Block Elements 47 Q · Test
11. 11 d- and f-Block Elements 26 Q · Test
12. 12 Coordination Compounds 27 Q · Test
13. 13 Purification and Characterisation of Organic Compounds 8 Q · Test
14. 14 Some Basic Principles of Organic Chemistry 29 Q · Test
15. 15 Hydrocarbons 33 Q · Test
16. 16 Organic Compounds Containing Halogens 9 Q · Test
17. 17 Organic Compounds Containing Oxygen 45 Q · Test
18. 18 Organic Compounds Containing Nitrogen 21 Q · Test
19. 19 Biomolecules 23 Q · Test
20. 20 Principles Related to Practical Chemistry 11 Q

Practice tests

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• Chemistry: Atomic Structure – NEET practice test Practice set · NEET · 16 questions · 16 min
• Chemistry: Biomolecules – NEET practice test Practice set · NEET · 15 questions · 15 min
• Chemistry: Chemical Bonding and Molecular Structure – NEET practice test Practice set · NEET · 30 questions · 30 min
• Chemistry: Chemical Kinetics – NEET practice test Practice set · NEET · 22 questions · 22 min

Top questions

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• If the rate constant of a reaction is 0.03 s^-1, how much time does it take for 7.2 mol L^-1 concentration of the reactant to get reduced to 0.9 mol L^-1?(Given: log 2 = 0.301) Answer: 1. 69.3 s Key idea: the unit mathrms⁻¹ means first order: t=2.303/klog[A]₀/[A] . 7.2/0.9=8 , log8=3×0.301=0.903 . t=2.303×0.903/0.03... Integrated rate equations and half-life (zero and first order) 1 answer
• Higher yield of NO in N_2(g) + O_2(g) ⇌ 2NO(g) can be obtained at[Δ H of the reaction = + 180.7 kJ mol^-1]A. higher temperatureB. lower temperatureC. higher concentration of N_2D. higher concentration of O_2Choose the correct answer from the options… Answer: 4. A, C, D only Key idea: Le Chatelier's principle. Δ H>0 (endothermic): higher temperature favours NO, so A is right and B is wrong... Delta G and equilibrium, factors affecting equilibrium, Le Chatelier's principle 1 answer
• Which one of the following reactions does NOT belong to "Lassaigne's test"? Answer: 4. mathrm2CuO + C xrightarrowΔ 2Cu + CO₂ Key idea: Lassaigne's test fuses the organic compound with sodium to convert N, S and halog... Qualitative analysis: detection of N, S, P, halogens 1 answer
• Sugar 'X'A. is found in honey.B. is a keto sugar.C. exists in α and β - anomeric forms.D. is laevorotatory.'X' is : Answer: 2. D-Fructose Key idea: match each property. D-Fructose is present in honey, is a keto sugar (ketohexose), exists as α and β anomers... Carbohydrates: classification, glucose, fructose 1 answer
• Match List I with List II.List I (Name of Vitamin): A. Vitamin B_12 B. Vitamin D C. Vitamin B_2 D. Vitamin B_6List II (Deficiency disease): I. Cheilosis II. Convulsions III. Rickets IV. Pernicious anaemiaChoose the correct answer from the options giv… Answer: 2. A-IV, B-III, C-I, D-II Vitamin mathrmB₁₂ : pernicious anaemia (IV). Vitamin D: rickets (III). Vitamin B₂ (riboflavin): cheilosis... Vitamins 1 answer
• Identify the correct orders against the property mentioned :A. H_2O > NH_3 > CHCl_3 - dipole momentB. XeF_4 > XeO_3 > XeF_2 - number of lone pairs on central atomC. O-H > C-H > N-O - bond lengthD. N_2 > O_2 > H_2 - bond enthalpyChoose the correct ans… Answer: 1. A, D only A true: H₂O (1.85 D) > NH₃ (1.47 D) > CHCl₃ (1.04 D). B false: lone pairs on Xe are XeF₄ = 2, XeO₃ = 1, XeF₂ = 3, so th... Electronegativity, Fajan's rule, dipole moment 1 answer