NEET Chemistry Daily MCQs Practice Questions | 5 August, 2024
Enhance your NEET 2025 preparation with our daily Chemistry MCQs. Practice today's set of questions (5 August, 2024) to strengthen your understanding and performance. Detailed solutions and explanations are provided for each question.
1. Question
Calculate the weight of H2C2O4.2H2O (mol wt. = 126) require to make 500mL of 0.2N solution?
3.6 gm
6.3 gm
63 gm
4.6 gm
Correct Answer
Wrong Answer
2. Question
Match the column-I with column-II.
| Column-I (Redox reaction) | Column-II (Type of redox reaction) |
|---|---|
| (A) CH4 + 2O2 → CO2 + 2H2O | (P) Decomposition reaction |
| (B) 2Fe + 3H2O → Fe2O3 + 3H2 | (Q) Disproportionation reaction |
| (C) 2H2O → 2H2 + O2 | (R) Displacement reaction |
| (D) S8 + 12OH- → 4S2- + 2S2O32- + 6H2O | (S) Combination reaction |
A→S, B→R, C→P, D→Q
A→R, B→S, C→Q, D→P
A→R, B→S, C→Q, D→P
A→P, B→Q, C→R, D→S
Correct Answer
Wrong Answer
3. Question
Which of the following statement is incorrect?
α-rays consist of high energy particles carrying two units of positive charge and four unit of atomic mass.
β-rays are negatively charged particles similar to electrons.
The γ-rays are high energy radiations and neutral in nature.
Order of penetration power = α rays > β rays > γ rays
Correct Answer
Wrong Answer
4. Question
8 g of A (mol. mass = 40) was placed in a 1L reaction vessel at 300 K and allowed to attain equilibrium A(g) ⇌ 2B (g). The total pressure at equilibrium was found to be 8 bar. Kp for the given reaction is approximately :
18.61 bar
3 bar
5 bar
9.34 bar
Correct Answer
Wrong Answer
5. Question
Which of the following is incorrect statement?
To obtain NaCl of very high purity and free from impurities like sodium and magnesium sulphates, HCl gas is passed through saturated solution of NaCl.
Ag+ ion, Fe3+ ion and Ba2+ ion can be precipitated in the form of sparingly soluble salt AgCl, Fe(OH)3 and BaSO4 respectively for gravimetric estimation using common ion effect.
Solubility of salts of weak acids like phosphates increases with increase in pH.
Henderson-Hasselbalch equation is used to determine pH of acidic buffer solution.
Correct Answer
Wrong Answer
6. Question
Which among the following is most preferred solvent for SN1 reaction?
DMF
Acetone
Methanol
DMSO
Correct Answer
Wrong Answer
7. Question
Which of the following reaction is not possible?
Correct Answer
Wrong Answer
8. Question
How many organic compound have same position of alcohol group according to IUPAC rules :-
Two
Three
Four
Five
Correct Answer
Wrong Answer
9. Question
Incorrect order of acidic strength is -
F3C–COOH > F2CH–COOH > F–CH2–COOH
H–COOH > Ph–COOH > CH3COOH
Ph–OH > C2H5OH > CH≡CH
Correct Answer
Wrong Answer
10. Question
Match the following column.
| Column-I (Alkene) | Column-II (Boiling Point) |
|---|---|
| A. cis-2-butene | P. 309 K |
| B. trans-2-butene | Q. 274 K |
| C. cis-2-pentene | R. 277 K |
| D. trans-2-pentene | S. 311 K |
A→R, B→Q, C→S, D→P
A→R, B→S, C→Q, D→P
A→R, B→Q, C→P, D→S
A→Q, B→R, C→P, D→S
Correct Answer
Wrong Answer
11. Question
One of the consequences of the Lanthanoid contraction is that:
Nb and Ta have about the same radius.
Zr and Zn have about the same radius.
Zr and Nb have same oxidation state.
Hf and Hg have about the same radius.
Correct Answer
Wrong Answer
12. Question
The compound C and it's colour is :-
Na2Cr2O7 and yellow
Na2CrO4 and yellow
K2Cr2O7 and orange
K2CrO4 and orange
Correct Answer
Wrong Answer
13. Question
Consider the following complexes.
(I) [MnCl6]-3 (II) [CoF6]-3
(III) [Mn(CN)6]-3 (IV) [Co(H2O)6]+3
The inner orbital complex(s) is/are :-
II and IV only
III and IV only
III only
I and II only
Correct Answer
Wrong Answer
14. Question
How many isomers can exist for the complex [Cr(en)2Br2]Cl ?
3
6
2
10
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Wrong Answer
15. Question
Match List-I with List-II and select the correct option:
| List-I (Atomic Number) | List-II (Name) |
|---|---|
| (a) 107 | (i) Copernicium |
| (b) 115 | (ii) Bohrium |
| (c) 105 | (iii) Dubnium |
| (d) 112 | (iv) Moscovium |
(a)→(iv), (b)→(ii), (c)→(iii), (d)→(i)
(a)→(ii), (b)→(iv), (c)→(i), (d)→(iii)
(a)→(i), (b)→(ii), (c)→(iii), (d)→(iv)
(a)→(ii), (b)→(iv), (c)→(iii), (d)→(i)
Correct Answer
Wrong Answer
16. Question
t99.99% for first order reaction is equal to :-
8t90%
2t90%
4t90%
3t90%
Correct Answer
Wrong Answer
17. Question
Which of the following statement are correct?
- The constituents of a compound cannot be separated into simpler substances by physical methods.
- The properties of a compound are always similar to properties of its constituent elements.
- S.I. unit of volume is litre (L).
- S.I. unit of pressure is bar.
- Freezing point and boiling point of water is 32°F and 212°F respectively.
A, B and E
B, C and E
A, C and D
A and E only
Correct Answer
Wrong Answer
18. Question
Assertion: Change in internal energy (ΔU) does not discriminate between reversible and irreversible process, whereas (ΔS)total does.
Reason: For reversible and irreversible expansion of an ideal gas, under isothermal conditions, ΔU = 0 but ΔStotal ≠ 0 for reversible process only.
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
Correct Answer
Wrong Answer
19. Question
Which of the following is false statement?
The concentration of sugar in a saturated aqueous solution depends upon the temperature.
In aqueous solution, the H3O+ ion is further hydrated to give species like H5O+2, H7O+3 and H9O+4
In aqueous solution, the hydroxyl ion is hydrated to give several ionic species like H3O-2, H5O-3 and H7O-4 etc.
The electrostatic forces between two charges are directly proportional to dielectric constant of medium.
Correct Answer
Wrong Answer
20. Question
Which of the following is incorrect statement?
Standard solution of primary standard can be prepared directly by weighing.
Standard solution of secondary standard can't be prepared by direct weighing.
Sodium hydroxide and potassium permanganate
are examples of primary standards.
The substance to be used as a primary standard should not be oxidised by air.
