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NEET UG practice questions

Physics, Chemistry and Biology practice with answers and explanations. 1,164 questions in the bank.

1. 1If the molar conductivity ($\Lambda_m$) of a 0.050 mol L⁻¹ solution of a monobasic weak acid is 90 S cm² mol⁻¹, its extent (degree) of…Chemistry· NEET 2025· Moderate
2. 2Given below are two statements : **Statement I** : A hypothetical diatomic molecule with bond order zero is quite stable. **Statement II**…Chemistry· NEET 2025· Moderate
3. 3Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?Chemistry· NEET 2025· Moderate
4. 4Match List-I with List-II | | List-I | | List-II | | :--- | :--- | :--- | :--- | | A. | $XeO_3$ | (I) | $sp^3d$; linear | | B. | $XeF_2$ |…Chemistry· NEET 2025· Moderate· figure
5. 5C(s) + 2$H_2$(g) → $CH_4$(g); ΔH = –74.8 kJ mol⁻¹. Which of the following diagrams gives an accurate representation of the above reaction?…Chemistry· NEET 2025· Moderate· figure
6. 6Match List-I with List-II | | **List-I (Example)** | | **List-II (Type of Solution)** | |---|---|---|---| | A. | Humidity | I. | Solid in…Chemistry· NEET 2025· Moderate
7. 7The correct order of decreasing basic strength of the given amines is:Chemistry· NEET 2025· Moderate
8. 8Among the following, choose the ones with equal number of atoms. A. 212 g of Na$_2$CO$_3$(s) [molar mass = 106 g] B. 248 g of Na$_2$O(s)…Chemistry· NEET 2025· Moderate
9. 9Match **List-I** with **List-II**. | | **List-I (Name of Vitamin)** | | **List-II (Deficiency disease)** | |---|---|---|---| | A. | Vitamin…Chemistry· NEET 2025· Moderate
10. 10The correct order of decreasing acidity of the following aliphatic acids isChemistry· NEET 2025· Moderate
11. 11Given below are two statements : **Statement I** : Ferromagnetism is considered as an extreme form of paramagnetism. **Statement II** : The…Chemistry· NEET 2025· Moderate
12. 12Match **List I** with **List II** [IMAGE] Choose the **correct** answer from the options given below:Chemistry· NEET 2025· Moderate· figure
13. 13For the reaction A(g) $\rightleftharpoons$ 2B(g), the backward reaction rate constant is higher than the forward reaction rate constant by…Chemistry· NEET 2025· Moderate
14. 14Given below are two statements : **Statement-I** : Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at 273 -…Chemistry· NEET 2025· Moderate· figure
15. 15How many products (including stereoisomers) are expected from monochlorination of the following compound? [IMAGE]Chemistry· NEET 2025· Moderate· figure
16. 16Among the given compounds I-III, the correct order of bond dissociation energy of C-H bond marked with * is : [IMAGE]Chemistry· NEET 2025· Moderate· figure
17. 17Which one of the following compounds does **not** decolourize bromine water?Chemistry· NEET 2025· Moderate· figure
18. 18The major product of the following reaction is [IMAGE]Chemistry· NEET 2025· Moderate· figure
19. 19Which of the following aqueous solution will exhibit highest boiling point?Chemistry· NEET 2025· Moderate
20. 20Match List-I with List-II. | | List-I | | List-II | | :--- | :--- | :--- | :--- | | A. | Haber process | I. | Fe catalyst | | B. | Wacker…Chemistry· NEET 2025· Moderate
21. 215 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are…Chemistry· NEET 2025· Moderate
22. 22Sugar ‘X’ A. is found in honey B. is a keto sugar C. exists in α and β – anomeric forms. D. Is laevorotatory. ‘X’ is :Chemistry· NEET 2025· Moderate
23. 23Identify the suitable reagent for the following conversion. [IMAGE]Chemistry· NEET 2025· Moderate· figure
24. 24Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). **Assertion (A)** : [IMAGE]…Chemistry· NEET 2025· Moderate· figure