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NEET Preparation
122 followers study24x7 30 Apr 2025 10:52 AM study24x7 study24x7

Which species is isoelectronic with CO?

A

NO

B

O₂

C

N₂

D

CN⁻

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NEET Preparation
122 followers study24x7 30 Apr 2025 10:07 AM study24x7 study24x7

The bond angle in water (H₂O) is approximately:

A

180°

B

109.5°

C

104.5°

D

90°

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NEET Preparation
122 followers study24x7 30 Apr 2025 10:06 AM study24x7 study24x7

Which of the following has sp³ hybridization?

A

CO₂

B

NH₃

C

C₂H₂

D

BF₃

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NEET Preparation
122 followers study24x7 29 Apr 2025 11:38 AM study24x7 study24x7

The force between two charges doubles when the distance between them is:

A

Doubled

B

Halved

C

Tripled

D

Remains unchanged

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NEET Preparation
122 followers study24x7 29 Apr 2025 11:35 AM study24x7 study24x7

Two charges +q and -q are placed 2 cm apart. The electric field at the midpoint is:

A

Zero

B

Towards +q

C

Towards -q

D

Perpendicular to the line joining charges

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NEET Preparation
122 followers study24x7 29 Apr 2025 11:15 AM study24x7 study24x7

The unit of electric field is:

A

Coulomb

B

Newton

C

Volt

D

Newton/Coulomb

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122 followers study24x7 28 Apr 2025 10:48 AM study24x7 study24x7

The oxygen dissociation curve is:

A

Linear

B

Hyperbolic

C

Sigmoid

D

Parabolic

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NEET Preparation
122 followers study24x7 28 Apr 2025 10:47 AM study24x7 study24x7

Which of the following hormones stimulates milk production in mammals?

A

Oxytocin

B

Vasopressin

C

Prolactin

D

Progesterone

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122 followers study24x7 28 Apr 2025 10:46 AM study24x7 study24x7

Which part of the nephron is mainly responsible for filtration of blood?

A

Henle’s loop

B

Bowman’s capsule

C

Collecting duct

D

Distal convoluted tubule

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NEET Preparation
122 followers study24x7 25 Apr 2025 11:26 AM study24x7 study24x7

The correct order of acidic strength is:

A

CH₃COOH > HCOOH > ClCH₂COOH

B

ClCH₂COOH > HCOOH > CH₃COOH

C

CH₃COOH > ClCH₂COOH > HCOOH

D

HCOOH > ClCH₂COOH > CH₃COOH

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NEET Preparation
122 followers study24x7 25 Apr 2025 11:18 AM study24x7 study24x7

Which among the following does not exhibit hydrogen bonding?

A

Water

B

Ethanol

C

HCl

D

HF

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122 followers study24x7 25 Apr 2025 11:12 AM study24x7 study24x7

A convex lens forms a real and inverted image of an object placed 20 cm from it. If the image is formed 40 cm away from the lens, what is the focal length?

A

10 cm

B

20 cm

C

13.3 cm

D

8 cm

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NEET Preparation
122 followers study24x7 24 Apr 2025 11:32 AM study24x7 study24x7

The resistance of a wire is R. What will be its resistance if it is stretched to double its original length?

A

R

B

2R

C

4R

D

1/2R

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122 followers study24x7 24 Apr 2025 11:31 AM study24x7 study24x7

Which of the following is a vestigial organ in humans?

A

Kidney

B

Liver

C

Appendix

D

Pancreas

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NEET Preparation
122 followers study24x7 24 Apr 2025 11:30 AM study24x7 study24x7

Which hormone is responsible for the “fight or flight” response?

A

Thyroxine

B

Insulin

C

Adrenaline

D

Oxytocin

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122 followers study24x7 23 Apr 2025 01:05 PM study24x7 study24x7

Which enzyme initiates carbohydrate digestion in the mouth?

A

Pepsin

B

Trypsin

C

Salivary amylase

D

Lipase

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122 followers study24x7 23 Apr 2025 01:03 PM study24x7 study24x7

Which of the following has the highest ionization energy?

A

Na

B

Mg

C

Al

D

Ne

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NEET Preparation
122 followers study24x7 23 Apr 2025 01:02 PM study24x7 study24x7

Which of the following oxides is amphoteric?

A

Na₂O

B

Al₂O₃

C

SO₂

D

CO₂

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NEET Preparation
122 followers study24x7 17 Apr 2025 11:19 AM study24x7 study24x7

The dimensional formula of Planck’s constant is:

A

[ML^2T^{-1}]

B

[ML^2T^{-2}]

C

[MLT^{-2}]

D

[M^2L^2T^{-1}]

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122 followers study24x7 17 Apr 2025 10:55 AM study24x7 study24x7

Which of the following is a connecting link between annelids and arthropods?

A

Peripatus

B

Neopilina

C

Limulus

D

Balanoglossus

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