SRMJEE Mock Test - 7 (Medical) - JEE MCQ

According to conservation of linear momentum,
m₁v₁ = m₁v + m₂v₂
Here, v₁ is the velocity of the bullet before the collision, v is the velocity of the bullet after the collision and v₂ is the velocity of the block.
∴ 0.02 x 600 = 0.02v + 4v₂
Here, v₂ = = 2 m/s
∴ 0.02 x 600 = 0.02v + 4 x 2
⇒ 0.02v = 12 – 8
⇒ v = 4/0.02 = 200 m/s

Current gain of common base circuit, α = I_c/I_e
I_e = 2 x 10^-3 A
I_c = αI_e = 0.95 x 2 x 10^-3 A
I_c = 1.9 x 10^-3 A
I_b = I_e - I_c = (2.0 - 1.9) x 10^-3 = 0.1 x 10^-3 A
Or, 0.1 mA

Current sensitivity is given by:

It can only be increased by increasing the number of turns in the coil, inserting a soft iron cylinder inside the coil and increasing the strength of the magnetic field.

Energy of a photon E = hc/λ
∴ Wavelength λ = hc/E

Wavelength range of X-rays is from 10^-11 m to 10^-8 m (0.1 Å to 100 Å).
Therefore, the given electromagnetic radiation belongs to the X-ray region of electromagnetic spectrum.

The net force on q at the origin is
= + = + (– ) =
Potential Energy, U =
^{Therefore, at the origin the force is minimum and potential energy is maximum.}

The work function of a material is the minimum amount of energy needed to release an electron from the surface of that material, it is given by, 

= 

So, for sodium,

In a capillary tube water rises to a height h such that the hydrostatic pressure (hρg) becomes equal to the excess pressure p = 2σ/R, where R is the radius of curvature of the meniscus. A satellite in a stable orbit around the earth is in a state of weightlessness, i.e. g = 0. Thus the hydrostatic pressure becomes zero. Consequently, water will rise to the top of the tube.

Induced emf,

Current is given as, I = I0cos(ωt)

For the zero order reaction, a straight line is obtained on taking concentration on y-axis vs time on x-axis.

Au + 4H⁺ + + 4Cl^- → Au + NO + 2H₂O
3Pt + 16H⁺ + + 18Cl^- → 3PtC + 4NO + 8H₂O

Fluorine cannot form multiple bonds with the central metal atom but oxygen atom can do the same.

• Mosses develop into a stage known as protonema from spores before developing into thallus, which resembles leaves. In contrast, this transitional stage is not present in liverworts, therefore the spores grow into a thallus without a protonema.
• Mosses are tiny, flowerless plants that belong to the Bryophyta category, along with liverworts and hornworts. They lack xylem and phloem-like circulatory systems and primarily absorb water and nutrients through their leaves. They often grow in bunches or mats on the forest floor in moist, shaded areas. They often only reach a height of 10 cm, although the unusual species Dawsonia may reach heights of 50 cm.

The correct sequence of events in the sexual cycle of fungi is as follows:

Plasmogamy: This is the initial step where the protoplasms of two fungal cells (usually from different mating types) fuse. However, the nuclei from these cells do not fuse immediately.
Karyogamy: This step involves the fusion of the nuclei from the fused cells. This process forms a diploid zygote nucleus.
Meiosis: Following karyogamy, the diploid zygote undergoes meiosis to form haploid spores that can develop into new fungal organisms.
Thus, the correct sequence is Plasmogamy, Karyogamy, and Meiosis, making Option C the correct choice.

While increasing CO₂ concentration up to 0.05 percent can enhance CO2 fixation rates and stimulate photosynthesis, exceeding this level can become detrimental to plants over extended periods, potentially harming their physiological processes and overall health.

The two molecules of pyruvic acid (produced from one glucose molecule during glycolysis). The acetyl CoA then enters a cyclic pathway, tricarboxylic acid cycle, more commonly called as Krebs’ cycle. Thus, acetyl-CoA interconnecting between two cyclic pathways.

Topic in NCERT: Tricarboxylic acid cycle

Line in NCERT: "The acetyl CoA then enters a cyclic pathway, tricarboxylic acid cycle,"

The correct order from smallest to largest is virus, PPLO (Mycoplasma), typical bacteria, and typical eukaryotic cell. Viruses are the smallest, usually only visible with an electron microscope. PPLOs are slightly larger than the largest viruses but smaller than typical bacteria. Typical bacteria are larger than viruses and PPLOs and are visible under light microscopes. Eukaryotic cells are the largest, significantly bigger than viruses, PPLOs, and typical bacteria, making Option A the correct choice.

Topic in NCERT: PROKARYOTIC CELLS

Line in NCERT: "Typical bacteria (1-2 µm) PPLO (about 0.1 µm) A typical eukaryotic cell (10-20 µm) Viruses (0.02-0.2 µm)"

The given diagram represents post-transcriptional processing resulting in the formation of mRNA. Since, introns and exons are present, it is transcription in eukaryotes.

NCERT Topic: transcription in eukaryotes

NCERT Line: "Figure 5.11 Process of Transcription in Eukaryotes"

The Law of Segregation clarifies that alleles segregate independently during gamete formation, ensuring that each gamete receives only one of the two factors or alleles from a parent. This segregation process underlies the inheritance of traits and explains why both parental traits are not always visible in the F1 generation. Heterozygous parents, which carry two different alleles for a trait, produce gametes with equal proportions of each allele, contributing to genetic diversity in offspring.

Line in NCERT: "Though the parents contain two alleles during gamete formation, the factors or alleles of a pair segregate from each other such that a gamete receives only one of the two factors."

• If the genotype is AaBb the alleles that are produced will be AB, Ab, aB, ab, since there are two diallelic characters in the genotypes the person must be heterozygous for both genes. AABB is homozygous. So, the correct answer is "AaBb".

Fig: Diallelic characters in the genotype

Hence, the correct option is B.

NCERT Reference: Topic - INHERITANCE OF TWO GENES” of chapter "Principles of Inheritance and Variation"  of NCERT 

Multiple alleles refer to a situation where more than two alleles exist for a gene in the population, such as the three alleles (A, B, O) for blood groups in humans (a-ii).
Polygenes involve multiple genes contributing to a trait, such as skin color in humans, which is influenced by multiple genes (b-iii).
Pleiotropy occurs when one gene affects multiple traits, such as phenylketonuria, which affects multiple aspects of health and development (c-i).

Line in NCERT: "Do you realise that the example of ABO blood grouping also provides a good example of multiple alleles? Here you can see that there are more than two, i.e., three alleles, governing the same character." "Human skin colour is another classic example for this. In a polygenic trait the phenotype reflects the contribution of each allele, i.e., the effect of each allele is additive." "Occasionally, a single gene product may produce more than one effect."

• Coconut has multicellular endosperm (called coconut meal) in the outer part and free nuclear as well as vacuolated endosperm (called coconut milk) in the centre.
• Thus, coconut milk represents free nuclear endosperm where the division of PEN is not followed by cytokinesis.

Minimum passing marks = Marks obtained + Marks failed by
= 164 + 76 = 240
Minimum passing marks = 240
Minimum passing percentage = 40%
Maximum Marks = × 100
= 600

AD = Height of the tower.

C is the top of the platform.

BC = DE = 40√3 m

Calculating:

tan 30° = AB / BC
1 / √3 = AB / 40√3

AB = 40 m

Height of the tower = AB + Height of the platform
AD = 40 + 5 = 45 m

Thus, the tower is 45 metres tall.

Last line in first paragraph of the passage states, ''The pervasiveness of insider control in Indian firms is revealed in an examination of the ownership structure of 3155 domestic private sector listed firms in India using the shareholding data disclosed under Clause 35 as reported in Prowess for the financial year 2007-2008.'' The passage also states, ''... an examination of the ownership structure of 2075 private sector listed Indian firms as of March 2006, reveals that only a small minority of companies in the sample—7.2%—are widely-held.'' So, it shows that majority of the share holder power remains in the hands of a few promoters. So, option 3 is the correct answer.

Last paragraph of the passage says, "While cross-country comparisons are somewhat difficult given that the reporting of equity ownership data is not uniform ..." So, option 3 is correct.

The firms with the concentrated ownership and insider control are the firms with majority of the holding lying in the hands of owners. Here, the equity is not shared among many shareholders. So, option 2 is correct.

'Hybrid' means the mixture or combination of different things. In the passage, it is used to define Indian corporate governance system as a mixture of 'outsider' and 'insider' systems. 'Pure' means something which is original and not corrupted by any foreign matter. Thus, it is the correct answer and is the opposite of 'hybrid'.