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NEET UG practice questions

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

1. 1The standard heat of formation, in kcal/mol of $Ba^{2+}$ is : [Given : standard heat of formation of $SO_{4}^{2-}$ ion (aq) = –216…Chemistry· NEET 2025· Moderate
2. 2Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula $C_4H_8O$ is :Chemistry· NEET 2025· Moderate· figure
3. 3Identify the correct orders against the property mentioned A. $H_2O > NH_3 > CHCl_3$ – dipole moment B. $XeF_4 > XeO_3 > XeF_2$ – number of…Chemistry· NEET 2025· Moderate
4. 4Higher yield of NO in $N_2(g) + O_2(g) \rightleftharpoons 2NO(g)$ can be obtained at [$\Delta H$ of the reaction = +180.7 kJ $mol^{-1}$] A.…Chemistry· NEET 2025· Moderate
5. 5If 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…Chemistry· NEET 2025· Moderate
6. 6Which one of the following reactions does NOT belong to “Lassaigne's test”?Chemistry· NEET 2025· Moderate
7. 7The complex II of mitochondrial electron transport chain is also known asBiology· NEET 2025· Moderate
8. 8Polymerase chain reaction (PCR) amplifies DNA following the equation.Biology· NEET 2025· Moderate
9. 9What are the potential drawbacks in adoption of the IVF method? A. High fatality risk to mother B. Expensive instruments and reagents C.…Biology· NEET 2025· Moderate
10. 10What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog?Biology· NEET 2025· Moderate
11. 11Which one of the following statements refers to Reductionist Biology?Biology· NEET 2025· Moderate
12. 12Given below are two statements : **Statement I :** In the RNA world, RNA is considered the first genetic material evolved to carry out…Biology· NEET 2025· Moderate
13. 13Epiphytes that are growing on a mango branch is an example of which of the following?Biology· NEET 2025· Moderate
14. 14From the statements given below choose the correct option : A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S. B. Each…Biology· NEET 2025· Moderate
15. 15Which one of the following is an example of ex-situ conservation?Biology· NEET 2025· Moderate
16. 16Given below are two statements: Statement I : The primary source of energy in an ecosystem is solar energy. Statement II : The rate of…Biology· NEET 2025· Moderate
17. 17Match List-I with List-II. [IMAGE] Choose the correct answer from the options given below :Biology· NEET 2025· Moderate· figure
18. 18Given below are two statements : one is labelled as **Assertion (A)** and the other is labelled as **Reason (R)**. **Assertion (A)** : Both…Biology· NEET 2025· Moderate
19. 19Which of the following is an example of non-distilled alcoholic beverage produced by yeast?Biology· NEET 2025· Moderate
20. 20Given below are two statements: **Statement I:** In a floral formula $⊕$ stands for zygomorphic nature of the flower, and G stands for…Biology· NEET 2025· Moderate
21. 21Streptokinase produced by bacterium *Streptococcus* is used forBiology· NEET 2025· Moderate
22. 22Which chromosome in the human genome has the highest number of genes?Biology· NEET 2025· Moderate
23. 23Which of the following statement is correct about location of the male frog copulatory pad?Biology· NEET 2025· Moderate
24. 24Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?Biology· NEET 2025· Moderate