Mdcat Online Test #2

Welcome to MDCAT Online Test #2. This test consists of 50 MCQs from Biology, Chemistry, Physics, English, and Logical Reasoning. The topics are listed on the test page. Enter your name and email to start the test. Make sure to be well-prepared before attempting the test, as it will boost your confidence for further preparation.

Test 2

Biology: Bio-energetic
○ Physics: Work and energy
○ Chemistry: Atomic Structure
○ English: Four types of sentences
○ Logical Reasoning: Letter and symbol series

1 / 50

During oxidative phosphorylation, ATP is generated through the process known as:

Photophosphorylation

Substrate-level phosphorylation

Fermentation

Chemiosmosis

2 / 50

Photosystem II differs from Photosystem I in that:

Photosystem I is involved in the Calvin cycle.

Photosystem I generates oxygen.

Photosystem II operates only in the dark.

Photosystem II uses water as an electron donor.

3 / 50

Which of the following is a final electron acceptor in anaerobic respiration?

Oxygen

NAD+

Sulfate

Water

4 / 50

An atom in its ground state has the electronic configuration Which of the following statements is incorrect regarding this atom?

It has 16 electrons.

The last electron enters a 3 𝑑 3d-orbital.

It belongs to the 3rd period.

The atom is neutral.

5 / 50

In which of the following electronic configurations does an atom violate Hund's Rule?

1s² 2s² 2p²

1s² 2s² 2p^5

1s² 2s² 2p^3

1s² 2s² 2p^4

6 / 50

A system has a total mechanical energy of 100 J, with a potential energy of 40 J. The kinetic energy of the system is:

60 J

100 J

40 J

140 J

7 / 50

Which letter comes next in the series: A, C, E, G, __?

8 / 50

Two blocks of masses 2 kg and 4 kg are connected by a string and placed on a frictionless surface. If a force of 12 N is applied to the 4 kg block, the tension in the string is:

6 N

4 N

8 N

2 N

9 / 50

A spring with a spring constant is compressed by 0.1 m. What is the elastic potential energy stored in the spring?

1 J

2 J

10 J

0.5 J

10 / 50

Which of the following is the correct order of energy levels and sublevels in an atom according to the Aufbau Principle?

1s<2s<3s<3p<4s<4p<3d

1s<2s<2p<3s<3p<4s<3d<4p

1s<2p<2s<3p<4s<3d

1s<2s<2p<3s<4p<3p<3d

11 / 50

The principal quantum number ( $n$ ) of an orbital primarily determines:

The shape of the orbital

The size and energy level of the orbital

The spin of the electron

The orientation of the orbital

12 / 50

A ball is thrown vertically upward with an initial speed of 20 m/s. Assuming no air resistance, the height at which the ball's kinetic energy equals its potential energy is:

15 m

10 m

20 m

5 m

13 / 50

14 / 50

A block is pushed up a frictionless incline with an angle θ and initial kinetic energy K0. What will be the block's kinetic energy when it reaches a height ?

Ko + mgh

Ko − mgh

Ko ⋅ sin(θ)

Ko + mgh ⋅ cos(θ)

15 / 50

Which of the following statements about the discovery of protons by Eugen Goldstein using canal rays is incorrect?

Canal rays were observed to pass through the cathode.

Canal rays are identical regardless of the gas used in the experiment.

The mass-to-charge ratio of canal rays is different for different gases.

Canal rays are composed of positively charged particles.

16 / 50

Take this pen and hand it over to the teacher." - Choose the kind of sentence this is from the four options given.

Interrogative

Imperative

Assertive/Declarative

Exclamatory

17 / 50

A force of 50 N is applied to push a 10 kg box across a horizontal surface with a friction coefficient of 0.2. The work done by the friction force over a distance of 10 m is:

100 J

400 J

500 J

200 J

18 / 50

Which statement accurately describes the properties of protons?

Protons are negatively charged.

Protons have a mass approximately equal to that of an electron.

Protons can exist freely in a vacuum without any containment.

Protons are located in the nucleus and have a positive charge.

19 / 50

Which of the following distinguishes anaerobic from aerobic respiration?

Aerobic respiration produces lactic acid.

Anaerobic respiration does not involve the Krebs cycle.

Both produce equal amounts of ATP.

Anaerobic respiration requires oxygen.

20 / 50

A 10 kg mass is lifted vertically upward by 5 meters in 2 seconds. What is the average power exerted? (Assume $m/s^2$

49 W

490 W

24.5 W

245 W

21 / 50

If the velocity of a car doubles, its kinetic energy changes by a factor of:

1/2

22 / 50

The concept of orbitals suggests that:

Electrons are localized in specific regions of space around the nucleus.

Electrons can exist at any distance from the nucleus.

Electrons only exist in one-dimensional space.

Electrons orbit the nucleus in fixed paths.

23 / 50

The kinetic energy of a particle of mass 2 kg moving at a speed of 4 m/s is:

64 J

32 J

8 J

16 J

24 / 50

A force is applied horizontally to a 2 kg block causing it to move at a constant velocity of 3 m/s on a surface with friction. The power expended by the applied force is:

18 W

12 W

9 W

6 W

25 / 50

Grandfather's Private Zoo' is a charming book by Ruskin Bond." - Choose the kind of sentence this is from the four options given

Interrogative

Imperative

Assertive/Declarative

Exclamatory

26 / 50

27 / 50

A 5 kg object is moving with a velocity of 3 m/s. What is the minimum amount of work required to stop the object?

67.5 J

7.5 J

45 J

22.5 J

28 / 50

Complete the series: X, V, S, P, __, H.

29 / 50

Who discovered the proton and what method was used?

Eugen Goldstein using canal rays

J.J. Thomson using cathode ray tube

James Chadwick using neutron bombardment

Ernest Rutherford using gold foil experiment

30 / 50

Which of the following best describes the Calvin Cycle?

It is dependent on light energy.

It produces oxygen as a byproduct.

It occurs in the thylakoid membrane.

It synthesizes glucose from CO2 and H2O.

31 / 50

Which of the following statements is true regarding the work done by a conservative force?

It is equal to the change in potential energy.

It always increases the mechanical energy of the system

It is path-dependent.

It can never be negative

32 / 50

Where does glycolysis occur within the cell?

Cytoplasm

Chloroplast

Nucleus

Mitochondria

33 / 50

Which of the following statements is correct about light-dependent and light-independent reactions?

Light-independent reactions require ATP and NADPH.

Light-dependent reactions fix CO2.

Light-dependent reactions produce glucose.

Both occur in the stroma.

34 / 50

Which molecule is a product of non-cyclic photophosphorylation in photosynthesis?

Oxygen

ADP

NADP+

Carbon dioxide

35 / 50

Identify the correct sentence from the four options given.

I love it

i love it!

I love it!

I Love it.

36 / 50

If a force → $F(vector) = 3 i^- 4 j^$ N moves a particle from r1(vector)=(2i^+j^)m to $r2(vector)=(4i^−3j^) m the work done by the force is:$

20 J

30 J

10 J

2 J

37 / 50

Which factor is least likely to affect the rate of photosynthesis?

Temperature

Oxygen concentration

Carbon dioxide concentration

Light intensity

38 / 50

Which statement is incorrect about potential energy?

It depends on the position of an object.

It is a scalar quantity.

It can be converted to kinetic energy.

It is always positive.

39 / 50

If an electron in a hydrogen atom transitions from the n=4 to the n=2 energy level, the photon emitted will have a wavelength in which region of the electromagnetic spectrum? (Use $h=6.626×10^34 Js$ and $c=3.0×10^8 m/s$

Infrared

Ultraviolet

Visible

X-ray

40 / 50

A block of mass $m$ is attached to a spring with spring constant and oscillates with amplitude . The maximum kinetic energy of the block is

½ m A²

½ k² A

½ KE A²

K A

41 / 50

Glycolysis results in the net production of which of the following per glucose molecule?

4 ATP, 2 NADH

2 ATP, 4 NADH

2 ATP, 2 NADH

4 ATP, 4 NADH

42 / 50

If a force of 20 N is applied to a spring with a spring constant of 80 N/m, the displacement of the spring is:

0.5 m

1.0 m

0.25 m

0.1 m

43 / 50

The efficiency of a machine that performs 400 J of work and expends 600 J of energy is:

75%

33%

50%

67%

44 / 50

A particle moving in a circular path with a constant speed has:

Increasing kinetic energy

Constant kinetic energy and increasing potential energy

Zero work done by centripetal force

Zero mechanical energy

45 / 50

Which of the following is true about the role of light in photosynthesis?

It is required in the Calvin cycle.

It directly synthesizes glucose.

It provides energy to split water molecules

It fixes carbon dioxide into organic molecules.

46 / 50

A block of mass 5 kg slides down a frictionless incline of height 3 meters. The speed of the block at the bottom of the incline is:

8.4m/s

7.7m/s

9.8m/s

4.9m/s

47 / 50

What is the primary purpose of the light-dependent reactions of photosynthesis?

To convert CO2 into oxygen

To produce glucose

To fix carbon into a stable form

To generate ATP and NADPH

48 / 50

According to the Pauli Exclusion Principle, which statement is true for the quantum numbers of electrons in the same orbital?

They must have different angular momentum quantum numbers.

They must have opposite magnetic quantum numbers.

They must have opposite spins.

They must have different principal quantum numbers.

49 / 50

Which quantum number indicates the orientation of an orbital in space? m¡

Principal quantum number ( 𝑛 )

Angular momentum quantum number ( 𝑙 )

Magnetic quantum number (m¡)

Spin quantum number ( 𝑚 𝑠)

50 / 50

The work done on a system increases its internal energy by 150 J, and it loses 50 J of energy as heat. The net change in the system's energy is:

200 J

250 J

100 J

150 J

Your score is

The average score is 46%

User Name	Duration	Score
zakarya	10 minutes 18 seconds	28%
Humair	8 minutes 42 seconds	68%
Humair	21 minutes 23 seconds	36%
Gonca	15 minutes 33 seconds	38%
Zoya	14 minutes 47 seconds	48%
Ahmed Hussain	47 minutes 57 seconds	20%
Nimi	12 minutes 45 seconds	48%
Rubbab khalid	33 minutes 46 seconds	72%
Adan	12 minutes 57 seconds	34%
Yusra	15 minutes 51 seconds	28%
Laila	3 hours 49 minutes 28 seconds	6%
Saqib Hussain	41 minutes 33 seconds	62%
fatima	26 minutes 16 seconds	42%
Ddddd	22 minutes 32 seconds	48%
Sandesh	22 minutes 55 seconds	56%
Junayd	18 minutes 17 seconds	30%
RAFI ULLAH	10 minutes 53 seconds	22%
Abubakar mahar	11 minutes 16 seconds	54%
Abubakar mahar	11 minutes 16 seconds	54%
Abubakar	19 minutes 13 seconds	30%
Kinza	16 minutes 26 seconds	22%
Sundas nawaz	13 minutes 52 seconds	34%
Laiba Faraz	33 minutes 56 seconds	64%
Laiba Faraz	18 seconds	2%
Mehzal Gulalai	16 minutes 15 seconds	74%
Amina Khalid	6 minutes 10 seconds	76%
Amina Khalid	4 minutes 22 seconds	8%
Farooq Khan	26 minutes 11 seconds	30%
Milli	3 minutes 3 seconds	24%
Wasi	20 minutes 31 seconds	66%
Junaid	21 minutes 38 seconds	44%
Saqib Hussain	25 minutes 35 seconds	40%
Sumbal	12 minutes 41 seconds	78%
Muqaddas inam	21 minutes 48 seconds	44%
Muhammad Junaid	28 minutes 38 seconds	36%
Khannoor	41 minutes 42 seconds	48%
M hanzala khan	15 minutes 10 seconds	34%
M.paryal	44 minutes 50 seconds	52%
Abdul Jabbar Memon	28 minutes 29 seconds	64%
Sana ullah afridi	10 minutes 39 seconds	44%
Santosh kumar Bheel	46 minutes 14 seconds	78%
Wisal Ahmad	2 hours 42 minutes 55 seconds	28%
Tariq	38 minutes 51 seconds	74%
Mian Muhammad Tufail Shah	41 minutes 9 seconds	66%
Muhammad ishaq	15 minutes 2 seconds	38%
Sadia	43 minutes 18 seconds	54%
Umar Abubakar	45 minutes 12 seconds	64%
m ilyas	13 minutes 32 seconds	90%
m.ilyas	46 minutes 36 seconds	74%
Roman Mehboob	49 minutes 58 seconds	66%
Khadija Batool	41 minutes 38 seconds	26%
Shabeer	35 minutes 51 seconds	76%
Kiran	27 minutes 41 seconds	57%
Wahid	55 seconds	10%
Mi kmcite	27 minutes 12 seconds	66%
Mansoor Anwar	11 seconds	0%
Zaryab	34 minutes 1 seconds	70%
Muhammad Zohaib Riaz	1 minutes 52 seconds	4%

Mdcat Online Test #2

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