SRMJEE Mock Test - 8 (Medical) - JEE MCQ

In the given circuit only diode D₁ will allow the current to pass through as it is forward-biased.
Hence, the current through the 100 ohm resistance is (∵ resistance of D₁ = 50 Ω)
I = A
= 0.02 A

Using the concept of escape velocity,

v_e = 11.2 10³ m/s

Here, F_CA = F_CB = F_C
Hence, the resultant force on the charge at C is

Given h_5th = 2 × h_6th. By solving we get u = 65 m s⁻¹

In the presence of friction, acceleration, a = (gsinθ − μgcosθ)

∴ Time taken to slide down the incline,

In the absence of friction, time taken to slide down the incline, 

According to the question, t₁ = 2t₂

sinθ = 4sinθ − 4μcosθ

The unit of K is mol L^-1 min^-1, which corresponds to a zero order reaction.
∴ Rate = K = Constant
Concentration of A which has reacted in 100 minutes = 100 × K = 100 × 1.0 × 10^-3 = 0.1 mol L^-1
∴ Concentration of B after 100 minutes = 2 × 0.1 = 0.2 mol L^-1

Second order reactions can be defined as chemical reactions wherein the sum of the exponents in the corresponding rate law of the chemical reaction is equal to two. The rate of such a reaction can be written as r = k[A]².
The half life of the reaction is 1/k[A].

As the tendency of polymerization increases, the compactness also increases. White phosphorous occurs as discrete molecules, red phosphorous is a linear chain polymer while black phosphorous has a layered structure like graphite.

The Beckmann rearrangement is an organic reaction used to convert an oxime to an amide under acidic conditions. The reaction begins by protonation of the alcohol group forming a better leaving group. The R group trans to the leaving group then migrates to the nitrogen, resulting in a carbocation and the release of a water molecule. This trans [1-2]-shift allows for the prediction of the regiochemistry of this reaction. The water molecule then attacks the carbocation and after deprotonation and tautomerization results in the final amide product.

The rusting of iron involves oxidation of iron.

Higher the oxidation potential, higher the tendency to get oxidised. The oxidation potential of Fe∣∣Fe²⁺ and Zn∣∣Zn²⁺ are 0.44 V and 0.76 V respectively.

Thus, the oxidation potential of Zn is higher than Fe. That's why Zn will get oxidised and Fe will remain protected.

Correct option is A

The internal and external lining of organs is formed by different types of epithelial tissue, based on the function of the organ. Example, alveoli- exchange of gases- squamous epithelium, skin-protection - keratinised epithelium and so on... . The function of different types of connective tissue is transport substances between various tissues and organs in the body (blood), bind tissue together (loose and dense) and to provide support (bone and cartilage), that i's they do not form linings of body organs.

All the other statements about connective tissue are true.

So, the correct answer is '(iv) only'

Normal blood pressure is 120/80 mm Hg. Blood pressure of 190/110 mm Hg is regarded as high blood pressure. It leads to heart diseases and also affects vital organs like brain and kidney.

The light-harvesting complexes (LHC) are made up of pigments that absorb different wavelengths of light, thus enhancing the efficiency of photosynthesis. These pigments help in capturing light energy and transferring it to the reaction centers, where the actual photochemical reactions occur.

Topic in NCERT: Roles various pigments play in photosynthesis

Line in NCERT: "these pigments help to make photosynthesis more efficient by absorbing different wavelengths of light."

• The epithelial cells of Bowman’s capsule called podocytes, which are arranged in an intricate manner so as to leave some minute spaces called filtration slits or slit pores.
• Blood is filtered so finely through these membranes, that almost all the constituents of the plasma except the proteins pass onto the lumen of the Bowman’s capsule.

Therefore, it is considered as a process of ultra filtration.

Line in NCERT: "The epithelial cells of Bowman's capsule called podocytes are arranged in an intricate manner so as to leave some minute spaces called filtration slits or slit pores."

• Zygomorphic : These are flowers that can only be divided into two equal halves by one particular vertical plane. An example is the flower of Cassia.
• Hypogynous : In these types of flowers, the gynoecium occupies the highest position while the other parts are situated below it. The flower is said to have a superior ovary and is hypogynous. An example of a hypogynous flower is mustard.
• Perigynous : In these flowers, the gynoecium is located in the center and other floral parts are located on the rim of the thalamus almost at the same level. The ovary here is said to be half inferior. Plum flowers are examples of perigynous flowers.
• Epigynous : In these flowers, the margin of thalamus grows upward enclosing the ovary completely and gets fused with it, the ovary is said to be inferior as the other floral parts are situated above the ovary. An example of an epigynous flower is cucumber.

Statement i is correct as HIV is primarily transmitted through sexual contact and contaminated needles.
Statement ii is incorrect as HIV is not transmitted through casual contact like hugging or shaking hands.
Statement iii is correct because HIV can be transmitted from an infected mother to her child during pregnancy, childbirth, or breastfeeding.
Statement iv is correct as HIV can be transmitted via blood transfusions with contaminated blood.
Thus, the correct answer is Option C: i, iii, and iv.

Topic in NCERT: Transmission of hiv infection

Line in NCERT: "hiv infection generally occurs by (a) sexual contact with infected person, (b) by transfusion of contaminated blood and blood products, (c) by sharing infected needles as in the case of intravenous drug abusers and (d) from infected mother to her child through placenta."

Ovulation is the release of the secondary oocyte from the ovary. In humans, ovulation occurs about 14 days before the onset of the next menstruation.

Given pedigree chart for fused ear lobes (autosomal recessive trait) can be explained as follows:

Mean = 1/2 (3 × Median - Mode)
Mean = 1/2 (3 × 26 - 28)
= 1/2 (50)
Mean = 25

Range of data is defined as the difference between two extreme observations of distribution
Or range = maximum value - minimum value.
Maximum value = 186
Minimum value = 78
So, Range = 186 - 78 = 108

Total number of cases = 20
Number divisible by 3 and 5 both = 15 (one only)
Therefore, Probability of card with a number divisible by 3 and 5 = 1/20
So, option 4 is correct.

The passage says,"The larger ... the larger the public float, the less is the scope for price manipulation of shares." Thus, larger number of shares held by public will lead to fairer prices of the shares. Option 3 is the correct answer. The passage says that it will help redistribute the wealth in the country. So, this is the benefit of public float and not the requirement.