Chemistry NEET Daily MCQs Practice Questions | 31 July, 2024

1. Question

The size of isoelectronic species F^– , Ne, Na⁺ is affected by :

Nuclear charge (Z)

Valence principal quantum number (n)

Electron-electron interaction in outer orbitals

None of the factors because their size is the same.

Correct Answer

Wrong Answer

2. Question

Considering the elements B, C, N, F and Si the correct order of their non-metallic character is :

B > C > Si > N > F

Si > C > B > N > F

F > N > C > B > Si

F > N > C > Si > B

Correct Answer

Wrong Answer

3. Question

Arrange the following elements in increasing order of first ionization enthalpy :

Li, Be, B, C, N, O

Choose the correct answer from the options given below :

Li < B < Be < C < N < O

Li < B < Be < C < O < N

Li < Be < B < C < O < N

Li < Be < B < C < N < O

Correct Answer

Wrong Answer

4. Question

According to IUPAC element with atomic number 109 represented as :

Une

Uue

Unh

Unq

Correct Answer

Wrong Answer

5. Question

Match List-I with List-II

List-I (Compound)		List-II (Shape/Geometry)
A. NH $_3$	i.	Bent
B. XeF $_4$	ii.	See-saw
C. SF $_4$	iii.	Square planar
D. H $_2$	iv.	Trigonal pyramidal

Choose the correct answer from the options given below:

A-iv, B-iii, C-ii, D-i

A-iv, B-ii, C-iii, D-i

A-iii, B-ii, C-iv, D-i

A-ii, B-iii, C-iv, D-i

Correct Answer

Wrong Answer

6. Question

For gaseous reaction, rate = K [A] [B]. If volume of container is reduced to 1/4 of initial then the rate of the reaction will be ........ times of initial:

1/8

8

1/16

16

Correct Answer

Wrong Answer

7. Question

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason.

Assertion (A) : The molar conductance of weak electrolytes is low as compared to that of strong electrolytes at moderate concentration.
Reason (R) : Weak electrolytes at moderate concentration dissociates to a much greater extent as compared to strong electrolytes.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(A) is correct but (R) is not correct

(A) is not correct but (R) is correct

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Correct Answer

Wrong Answer

8. Question

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason.

Assertion (A) :Sodium ions are discharged at the Hg electrode during electrolysis in preference to H⁺ ions.
Reason (R) : The nature of electrode also affects the order of discharge of cations.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(A) is correct but (R) is not correct

(A) is not correct but (R) is correct

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Correct Answer

Wrong Answer

9. Question

The Thermodynamic efficiency of cell is given by:

$\frac{∆ H}{∆ G}$

$\frac{nFE}{∆ G}$

$- \frac{nFE}{∆ H}$

Zero

Correct Answer

Wrong Answer

10. Question

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason.

Assertion (A) :Internal energy of gas remain constant during adiabatic free expansion.
Reason (R) : Work done is zero and heat exchange is zero.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are correct but (R) is not the
correct explanation of (A)

(A) is correct but (R) is not correct

(A) is not correct but (R) is correct

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Correct Answer

Wrong Answer

11. Question

The pair of species that has the same bond order in the followig is :

CO, NO⁺

NO^– , CN^–

O₂, N₂

O₂ , B₂

Correct Answer

Wrong Answer

12. Question

Which one of the following compounds shows the presence of intramolecular hydrogen bond :

H₂O₂

Correct Answer

Wrong Answer

13. Question

The species, having bond angles of 120° is :

ClF₃

NCl₃

PH₃

BF₃

Correct Answer

Wrong Answer

14. Question

Match the metal ions given in Column-I with the spin magnetic moments of the ions given in Column-II and assign the correct code:

Column-I		Column-II
A. Co $^{3+}$	i.	$\sqrt{8}$ B.M.
B. Cr $^{3+}$	ii.	$\sqrt{35}$ B.M.
C. Fe $^{3+}$	iii.	$\sqrt{15}$ B.M.
D. Ni $^{2+}$	iv.	$\sqrt{24}$ B.M.

A-iv, B-iii, C-i, D-ii

A-iii, B-ii, C-iv, D-i

A-ii, B-iii, C-iv, D-i

A-iv, B-iii, C-ii, D-i

Correct Answer

Wrong Answer

15. Question

Name a transition element which does not exhibit variable oxidation states :
(A) Sc
(B) Cu
(C) Zn

Only A

A and B

Only C

A and C, Both

Correct Answer

Wrong Answer

16. Question

Correct order of pK_a values are :

iii > i > ii > iv

iii > iv > ii > i

i > ii > iii > iv

i > ii > iv > iii

Correct Answer

Wrong Answer

17. Question

Given below are two statements :
Statement I: Adrenaline & Ephidrine are two biologically active drugs, which increases blood pressure and contains tertiary amino group.
Statement II : Aniline cannot be synthesized by using Gabriel phthalimide reaction.

In the light of the above statements, choose the most appropriate answer from the options given below :

Both Statement I and Statement II are incorrect

Statement I is correct but Statement II is incorrect

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are correct.

Correct Answer

Wrong Answer

18. Question

The structure of A and C are respectively :

Correct Answer

Wrong Answer

19. Question

In which of the following reaction, carbon-carbon bond formation does not occur :

Wurtz reaction

Aldol condensation

Haloform reaction

Kolbe’s electrolytic decarboxylation

Correct Answer

Wrong Answer

20. Question

Choose the correct statements of the following :
i. Glucose reacts with HCN and NaHSO₃.
ii. Maltose and Lactose are reducing sugar.
iii. Lactose is known as milk sugar.

Only i and ii are correct

Only ii and iii are correct

Only i and iii are correct

All are correct

Chemistry NEET Daily MCQs Practice Questions | 31 July, 2024

Enhance your NEET 2024 preparation with our daily Chemistry MCQs. Practice today's set of questions (31 July, 2024) to strengthen your understanding and performance. Detailed solutions and explanations are provided for each question.

1. Question

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2. Question

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3. Question

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4. Question

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5. Question

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6. Question

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7. Question

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8. Question

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9. Question

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10. Question

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11. Question

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12. Question

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13. Question

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14. Question

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15. Question

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16. Question

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17. Question

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18. Question

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19. Question

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20. Question

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