SRMJEE Mock Test - 1 (Medical) - JEE MCQ

If Q is the initial charge on capacitor C₁, then the initial energy is given by U_i = Q²/2C₁.
As the two capacitors are connected together and the charge is distributed equally, the charge on each capacitor is Q/2. Since the potential difference (in a parallel connection) across the two capacitors is also the same, it follows that their capacitance are equal (since C = Q/V).
Thus, C₁ = C₂ = C (say)
Also, Q₁ = Q₂ = Q/2
Therefore, the final energy stored in the two capacitors is

But U_i = Q²/2C
∴ U_f/U_i = 1/2, which is option (2).

• When the magnetic field linked to a coil changes with time then the magnetic flux through it also changes.
• Due to these changes in magnetic flux, there is an induced emf in the circuit.
• When we attach the resistance in the circuit then there will be an electric current flowing in the circuit. This current is called an induced current.
• Thus the phenomenon of electromagnetic induction implies the production of current in a coil when a magnetic field changes with time. Hence option 3 is correct.
• The resistance of any coil is its property which never changes. So option 1 is not correct.
• There is no changes in voltage or current if the electric field changes. So options 2 and 4 are wrong.

Time taken by the bullet and ball to strike the ground is

Let v₁ and v₂ be the velocities of the ball and bullet after the collision.

Using the equation:
x = v × t

We have:
20 = v₁ × 1
So, v₁ = 20 m/s

100 = v₂ × 1
So, v₂ = 100 m/s

Now, applying the law of conservation of linear momentum before and after the collision:

0.01 v = (0.2 × 20) + (0.01 × 100)

Solving for v:

0.01 v = 4 + 1
0.01 v = 5
v = 5 / 0.01 = 500 m/s

Thus, the initial velocity of the bullet is 500 m/s.

Let E and B be along X-axis. When a charged particle is released from rest, it will experience an electric force along the direction of electric field or opposite to the direction of electric field depending on the nature of charge. Due to this force, it acquires some velocity along X-axis. Due to this motion of charge, magnetic force can not have non-zero value because angle between v and B would be either 0° or 180°. So, only electric force is acting on particle and hence, it will move along a straight line.

Specific conductance of H₂SO₄ decreases with dilution as the number of ions available for carrying current per unit volume decreases with dilution. Hence, option (2) is correct.
All the other statements are wrong.
Conductance of metallic conductors decreases with rise in temperature. Hence, option (1) is incorrect.
Cane sugar is a non-conductor. Hence, option (3) is incorrect.
Conductance of electrolytic conductors increases with rise in temperature. Hence, option (4) is incorrect.

(i) [Fe(CN)₆]⁴⁻

In [Fe(CN)₆]⁴⁻, Fe is present as Fe²⁺.

Since CN⁻ is a strong field ligand, it pairs up the d-electrons of the metal.

Thus, [Fe(CN)₆]⁴⁻ has an octahedral shape.

The remaining complexes have a coordination number (CN) = 4, so they will not be octahedral.

 does not have

 group required for iodoform test.

During the first pregnancy, the maternal immune system is not yet sensitized to the Rh antigen, so the mother produces antibodies against Rh only after exposure to the foetal blood during delivery. This is why the first pregnancy is generally unaffected.

Angina pectoris occurs when the coronary arteries fail to supply adequate oxygen to the heart muscles, leading to chest pain

• Statement I is correct: Uricotelic animals (e.g., birds, reptiles) excrete nitrogenous waste primarily as uric acid, which helps conserve water.
• Statement II is incorrect: Uric acid is not highly soluble in water, and it is typically excreted as solid or semi-solid crystals, not through the skin.

Thus, Statement I is correct, but Statement II is incorrect.

• Statement 1 is correct: The endodermis in dicot roots contains Casparian strips made of suberin.
• Statement 2 is correct: The pericycle is responsible for the initiation of lateral roots and vascular cambium during secondary growth.
• Statement 3 is incorrect: The xylem in dicot roots typically has an exarch arrangement (with the xylem located towards the outside) rather than a polyarch condition.
• Statement 4 is correct: The pith in dicot roots is typically small or inconspicuous.

Thus, the correct answer is Option 1: 1, 2, and 4.

Red tides are caused by the rapid growth of dinoflagellates, which can release toxins that are harmful to marine life, including fish, shellfish, and other marine animals. These toxins can cause massive die-offs and can even be toxic to humans who consume contaminated seafood. Thus, Option 2 is correct, as it highlights the harmful effects of red tides as harmful algal blooms.

During photosynthesis, water (H₂O) is the hydrogen donor, and it is split into oxygen, protons, and electrons.

Monocots typically exhibit parallel venation in their leaves, and the veins in the lamina of monocot leaves do indeed run parallel to each other.

In the electron transport chain, electrons are transferred through a series of proteins and carriers, facilitating the conversion of light energy into chemical energy without being consumed in the process.

One of the first attempts to explain the mechanism of evolution was made by Jean Baptiste de Lamarck. His theory was Inheritance of Acquired Characters. The theory states that the characters acquired during life time are passed on to the progeny and then to subsequent generations and new species are produced.

In situ means keeping endangered species of animals or plants into natural environment and not in the environment that looks like natural but man made, like zoological & botanical gardens. In situ includes, national parks, sanctuaries and biosphere reserve.

According to the concept of species-area relationship, within a region, species richness gets increased when explored area is increased, but only up to a limit.

Okazaki fragments in DNA are linked up by the enzyme DNA ligase. Replication always occur in 5' - 3' direction. Okazaki fragments synthesized on 3' - 5' DNA template, join to form lagging strand which grows in 5' - 3' direction.

The logistic population growth is expressed by the equation where N is population density at time t, r is the Malthusian parameter (rate of maximum population growth) and K is the so called carrying capacity (i. e. maximum sustainable population). It is a type of population growth when resources are limiting.

AIDS is a viral disease. Syphilis and gonorrhoea are both sexually transmitted diseases. Colour blindness is a sex linked disease.

Acrosome a small pointed structure at the tip of nucleus. It breaks down just before fertilization, releasing hydrolytic enzymes that assist penetration between follicle cells that surrounds the ovum, thus facilitating fertilization.

Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur. Enzymes bind temporarily to one or more of the reactants the substrate(s) of the reaction they catalyze by lowering the amount of activation energy needed and thus speed up the reaction.

• A. Gene therapy → I. Effort to fix functional gene

• B. Humulin → III. Diabetes

• C. Probe → II. A single-stranded DNA or RNA tagged with a radioactive molecule

• D. ELISA → IV. Diagnostic test

'I' represent temporal bone in the given figure. The temporal lobe is one of the four major lobes of the cerebral cortex in the brain and located beneath the lateral fissure on both cerebral hemispheres of the mammalian brain. The temporal lobes are involved in processing sensory input into derived meanings for the appropriate retention of visual memories, language comprehension, and emotion association.

In ΔABC,
tan 60° = tan ∠ACB = AB/BC

BC = 10 cm
In ΔCDE,
tan 30° = tan ∠ECD =
_{CD =}
BD = BC + CD = 10 cm + 15 cm = 25 cm

A man is facing South. He turns 135 degrees in the anticlockwise direction and then 180 degrees in the clockwise direction.

According to the question, the man turns in the anticlockwise direction, which means he is turning towards the northeast.
He turns 135°, which is  90° + 45.
On turning 90°90°, he would face east and on further turning 45°, he would face the exact centre line between north- east.
And Finally, he turns 180° in the clockwise direction, he would face the exact centre line in the South-west direction.
So, he is facing in the South-west direction at the final position.
Hence, this is the correct answer.