Pre Net 2015 Medical By Taleem Tutor

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  • 1/200 Questions

    Cloning is production of genetically identical copies of organisms/ cells by:

    • Sexual reproduction
    • Asexual reproduction
    • Both sexual and asexual
    • None of Given
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Pre Net 2015 Medical By Taleem Tutor - Quiz
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1. Each Question Carries 1 Marks.
2. There are Total 200 Questions.
3. No Negtive Marking
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5. Dont Forget To Share You Result in Our Group After the Test For Suggestions.
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  • 2. 

    Which word does not belong to the group in each of the following questions?

    • chest

    • Ear

    • Lip

    • Nose

    Correct Answer
    A. chest
    Explanation
    All the other words (ear, lip, nose) are body parts located on the face, whereas chest is a body part located on the torso.

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  • 3. 

    The overall positive reaction potential value predicts that process is:

    • Not feasible

    • Feasible

    • Impossible

    • No indication

    Correct Answer
    A. Feasible
    Explanation
    The overall positive reaction potential value indicates that the process is feasible. A positive reaction potential value suggests that the reaction is likely to occur spontaneously and proceed in the forward direction. This means that the process is possible and can be carried out successfully.

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  • 4. 

    Which compound shows maximum hydrogen bonding with water:

    Correct Answer
    A.
    Explanation
    The compound that shows maximum hydrogen bonding with water is ethanol. Ethanol contains a hydroxyl group (-OH), which is capable of forming hydrogen bonds with water molecules. The oxygen atom in the hydroxyl group has a partial negative charge, while the hydrogen atoms in water have partial positive charges. This allows for the formation of hydrogen bonds between the oxygen in ethanol and the hydrogen atoms in water, resulting in strong intermolecular attractions. Other compounds may also form hydrogen bonds with water, but ethanol has a higher propensity for hydrogen bonding due to the presence of the hydroxyl group.

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  • 5. 

    Oxygen is transported by combining with____________ in Hb.

    • Nitrogen

    • Iron

    • Carbon

    • Hydrogen

    Correct Answer
    A. Iron
    Explanation
    Oxygen is transported by combining with iron in Hb. Hemoglobin (Hb) is a protein found in red blood cells that binds to oxygen in the lungs and carries it to the body's tissues. Iron is an essential component of hemoglobin and is responsible for binding to oxygen molecules. When oxygen binds to the iron in hemoglobin, it forms a stable complex that can be transported throughout the body. This process allows oxygen to be efficiently transported from the lungs to all the cells in the body.

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  • 6. 

    When the output power equals to one-half of the input power, efficiency of the transformer becomes:

    • 0 %

    • 100 %

    • 50 %

    • 200 %

    Correct Answer
    A. 50 %
    Explanation
    When the output power of a transformer is equal to one-half of the input power, it means that the transformer is operating at 50% efficiency. This means that only half of the input power is being converted into useful output power, while the other half is being lost as heat or other forms of energy. Therefore, the efficiency of the transformer is 50%.

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  • 7. 

    When fused PbBr2 is electrolyzed:

    • Bromine appears at the cathode

    • Lead is deposited at the cathode

    • Lead appears at the anode

    • None of Given

    Correct Answer
    A. Lead is deposited at the cathode
    Explanation
    When fused PbBr2 is electrolyzed, lead is deposited at the cathode. This is because during electrolysis, positive ions are attracted to the negative electrode (cathode). In this case, lead ions (Pb2+) are present in the fused PbBr2 and they are reduced at the cathode, forming solid lead. Bromine ions (Br-) are attracted to the positive electrode (anode) and form bromine gas. Therefore, the correct answer is lead is deposited at the cathode.

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  • 8. 

    Useful bacteria at large intestine of humans produce:

    • Vitamin K

    • Vitamin E

    • Vitamin D

    • Vitamin C

    Correct Answer
    A. Vitamin K
    Explanation
    Bacteria in the large intestine of humans produce vitamin K. Vitamin K is an essential nutrient that plays a key role in blood clotting, bone health, and preventing excessive bleeding. While humans cannot produce vitamin K on their own, certain bacteria in the gut can synthesize it. These bacteria convert dietary sources of vitamin K, such as leafy greens, into a form that can be easily absorbed and utilized by the body. Therefore, the presence of these beneficial bacteria in the large intestine helps ensure an adequate supply of vitamin K for various physiological functions.

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  • 9. 

    DNA fingerprinting is basically done for:

    • DNA cloning

    • DNA analysis

    • DNA sequencing

    • DNA slicing

    Correct Answer
    A. DNA analysis
    Explanation
    DNA fingerprinting is a technique used to analyze and compare DNA samples from different individuals. It is commonly used in forensic science to identify suspects or determine the parentage of individuals. DNA analysis involves extracting and analyzing specific regions of DNA to create a unique pattern or "fingerprint" for each individual. This fingerprint can then be compared to other samples to determine if they match or not. DNA cloning, sequencing, and slicing are different techniques used for other purposes and are not specifically related to DNA fingerprinting.

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  • 10. 

    Starch is a polymer of:

    • Fructose

    • Sucrose

    Correct Answer
    A.
    Explanation
    Starch is a polymer of glucose.

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  • 11. 

    As  temperature of the black body is raised the black body radiations become richer in :

    • Intermediate Wavelenths

    • Longer Wavelengths

    • Shorter Wavelengths

    • Low Frequencies

    Correct Answer
    A. Shorter Wavelengths
    Explanation
    As the temperature of a black body is raised, the black body radiations become richer in shorter wavelengths. This is because as the temperature increases, the atoms and molecules in the black body vibrate more vigorously, resulting in the emission of higher energy photons. Higher energy photons have shorter wavelengths, according to the wave-particle duality of light. Therefore, the black body radiations shift towards shorter wavelengths as the temperature increases.

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  • 12. 

    Which type of chlorophyll is found in all types of algae?

    • Chlorophyll a

    • Chlorophyll b

    • Chlorophyll c

    • Chlorophyll d

    Correct Answer
    A. Chlorophyll a
    Explanation
    Chlorophyll a is the correct answer because it is the primary pigment responsible for photosynthesis in algae. It is found in all types of algae and is essential for capturing light energy and converting it into chemical energy. Chlorophyll b, c, and d are also found in certain types of algae, but they are secondary pigments that assist chlorophyll a in capturing light energy. Therefore, chlorophyll a is the most common and important type of chlorophyll in algae.

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  • 13. 

    Which of the following does not belong to same linkage group?

    • Sickle cell anemia

    • Albinism

    • Leukemia

    • Gout

    Correct Answer
    A. Gout
    Explanation
    Sickle cell anemia, albinism, and leukemia are all genetic disorders caused by mutations in specific genes. These genes are located on the same chromosome and are therefore part of the same linkage group. However, gout is not a genetic disorder but rather a metabolic condition caused by the buildup of uric acid in the body. It is not linked to the same chromosome or genes as the other disorders mentioned.

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  • 14. 

    Identify Which  do not possess the same kind of meaning as the others:

    • Honesty and Integrity

    • Bondage and Freedom

    • Risk and Danger

    • Pain and Agony

    Correct Answer
    A. Bondage and Freedom
    Explanation
    The pair "Bondage and Freedom" does not possess the same kind of meaning as the others because while "Honesty and Integrity," "Risk and Danger," and "Pain and Agony" all consist of contrasting concepts, "Bondage and Freedom" represent opposing concepts rather than contrasting ones. The former refers to a state of being restricted or enslaved, while the latter signifies the absence of constraints or the ability to act freely.

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  • 15. 

    Equation of SHM, with amplitude 'a' is given by:

    Correct Answer
    A.
    Explanation
    The equation of Simple Harmonic Motion (SHM) with amplitude 'a' is given by the equation y = a * sin(ωt + φ), where y is the displacement of the object from its mean position, ω is the angular frequency, t is the time, and φ is the phase constant. This equation represents the periodic motion of an object back and forth along a straight line, where the displacement is proportional to the sine of the angular frequency multiplied by time, with an additional phase constant.

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  • 16. 

    Second major form of hepatitis is:

    • Hepatitis A

    • Hepatitis B

    • Hepatitis C

    • Hepatitis D

    Correct Answer
    A. Hepatitis B
    Explanation
    Hepatitis B is the second major form of hepatitis. It is a viral infection that affects the liver and is transmitted through contact with infected blood or other bodily fluids. It can be acute or chronic, and symptoms may include fatigue, jaundice, abdominal pain, and loss of appetite. Hepatitis B can lead to serious complications such as liver cirrhosis and liver cancer. Vaccination is available to prevent hepatitis B infection.

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  • 17. 

    Voracious means __________.

    • Exciteable

    • Honest

    • Greedy

    • Circular

    Correct Answer
    A. Greedy
    Explanation
    Voracious means having a very eager or insatiable appetite, especially for food. It implies a strong desire or greed for consuming large quantities. Therefore, the correct answer is "greedy".

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  • 18. 

    Which of the following gas is more ideal at STP:

    Correct Answer
    A.
    Explanation
    The gas that is more ideal at STP is helium.

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  • 19. 

    • Primary alkyl halide

    • Secondry alkyl halide

    • Tertiary alkyl halide

    • All of the above

    Correct Answer
    A. Primary alkyl halide
  • 20. 

    The ultimate source of all changes is:

    • Mutation

    • Migration

    • Genetic drift

    • Change in allelic frequency

    Correct Answer
    A. Mutation
    Explanation
    Mutation is the ultimate source of all changes because it is the process by which new genetic variations are introduced into a population. Mutations can occur spontaneously or as a result of environmental factors, and they can lead to changes in the DNA sequence of an organism. These changes can then be passed on to future generations, resulting in genetic diversity and the potential for evolution to occur. Therefore, mutation is the primary driver of genetic change and is responsible for the creation of new alleles and the variation seen within and between populations.

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  • 21. 

    Reactive parts of an amino acid are:

    • Alpha carbon & amino group

    • Amino group & carboxyl group

    • Carboxyl group & R group

    • R group & alphacarbon

    Correct Answer
    A. Amino group & carboxyl group
    Explanation
    The reactive parts of an amino acid are the amino group and the carboxyl group. The amino group contains a nitrogen atom that can donate a proton, making it a basic group. The carboxyl group contains a carbon atom double-bonded to an oxygen atom and single-bonded to another oxygen atom, which can accept a proton, making it an acidic group. These two reactive groups allow amino acids to undergo various chemical reactions, such as condensation reactions to form peptide bonds during protein synthesis.

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  • 22. 

    His credulous nature often landed him in touble

    • Dreamy

    • Naughty

    • Innocent

    • Willing to believe easily

    Correct Answer
    A. Willing to believe easily
    Explanation
    The correct answer is "willing to believe easily." The word "credulous" refers to someone who is easily convinced or believes things without questioning. This person is likely to trust others easily and may be gullible, which can often lead them into trouble. Therefore, the phrase "His credulous nature often landed him in trouble" suggests that he is willing to believe easily, making him susceptible to getting into difficult situations.

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  • 23. 

    Which Graph in SHM show K.E of body:

    Correct Answer
    A.
  • 24. 

    A maintenance crew is working on a section of a three-lane highway only lane open to traffic. The result is much slower traffic flow. Do cars on a highway behave like:

    • The molecules of an incompressible fluid

    • The molecules of a compressed fluid

    • Both (a) and (b)

    • None of the above

    Correct Answer
    A. The molecules of a compressed fluid
    Explanation
    Cars on a highway behave like the molecules of a compressed fluid. This means that as the number of cars increases, the density of the traffic also increases, leading to slower traffic flow. This analogy is used because, similar to a compressed fluid, the cars on a highway can experience congestion and reduced flow due to limited space and increased density.

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  • 25. 

    Trichome of Nostoc is surrounded by:

    • Pellicle

    • Capsule

    • Mucilaginous sheath

    • None of Given

    Correct Answer
    A. Mucilaginous sheath
    Explanation
    The trichome of Nostoc is surrounded by a mucilaginous sheath. Trichomes are long, filamentous structures that are found in certain types of bacteria, including Nostoc. The mucilaginous sheath provides protection and support to the trichome, helping it to maintain its structure and function. It also helps in the attachment of the trichome to surfaces and in the formation of colonies. The pellicle is a thin, skin-like layer that forms on the surface of liquids and is not relevant to the structure of the trichome of Nostoc. Similarly, the capsule is a protective structure found in some bacteria, but it is not associated with the trichome of Nostoc. Therefore, the correct answer is mucilaginous sheath.

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  • 26. 

    In Beta elimination reaction , nucleophile attacks on:

    • Alpha hydrogen

    • Beta hydrogen

    • Hydrogen

    • Alpha carbon

    Correct Answer
    A. Beta hydrogen
    Explanation
    In a beta elimination reaction, the nucleophile attacks the beta hydrogen. This is because the beta hydrogen is located on the carbon adjacent to the carbon bearing the leaving group. The nucleophile attacks this hydrogen, causing it to be removed and resulting in the formation of a double bond between the two adjacent carbons. This reaction is called beta elimination because the hydrogen being removed is located on the beta (second) carbon.

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  • 27. 

    Reduction division is:

    • Amitosis

    • Mitosis

    • Meiosis I

    • Meiosis II

    Correct Answer
    A. Meiosis I
    Explanation
    Meiosis I is the correct answer because it is the process of cell division that occurs in sexually reproducing organisms. During meiosis I, the number of chromosomes is reduced by half, resulting in the formation of haploid cells. This division involves two rounds of cell division, resulting in the separation of homologous chromosomes. Meiosis I is essential for genetic diversity and the production of gametes for sexual reproduction.

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  • 28. 

    If the compressibility factor for one mole of an ideal gas is 1, then what will be the compressibility factor for two moles of gas:

    • Same

    • Different

    • Zero

    • None of the above

    Correct Answer
    A. Same
    Explanation
    The compressibility factor for an ideal gas is always 1, regardless of the number of moles of gas present. This is because an ideal gas follows the ideal gas law, which states that at low pressures and high temperatures, the volume of a gas is inversely proportional to its pressure. Therefore, the compressibility factor remains the same for any number of moles of gas.

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  • 29. 

    Ninhydrin reacts with amino acid to form product which has colour:

    • Blue

    • Violet

    • Bluish Violet

    • Red

    Correct Answer
    A. Bluish Violet
    Explanation
    Ninhydrin is a chemical compound that reacts with amino acids to form a colored product. When ninhydrin reacts with an amino acid, it undergoes a chemical reaction that produces a bluish violet colored product. This color change is used in various analytical techniques to detect the presence of amino acids, such as in chromatography or fingerprint analysis. Therefore, the correct answer is bluish violet.

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  • 30. 

    Menstrual cycle can be divided into: 

    • Single phase

    • Two phases

    • Three phases

    • Four phases

    Correct Answer
    A. Four phases
    Explanation
    The menstrual cycle can be divided into four phases: the menstrual phase, the follicular phase, the ovulatory phase, and the luteal phase. The menstrual phase is when the uterine lining sheds, resulting in menstruation. The follicular phase is characterized by the maturation of the ovarian follicles. The ovulatory phase is when a mature egg is released from the ovary. The luteal phase occurs after ovulation and is marked by the development of the corpus luteum. These four phases make up the menstrual cycle.

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  • 31. 

    Maximum mammalian characters are present in these

    • Metatheria

    • Prototheria

    • Eutheria

    • None of Given

    Correct Answer
    A. Eutheria
    Explanation
    Eutheria refers to placental mammals, which are a group of mammals that give birth to live young ones and nourish them through a placenta. This group includes the majority of mammalian species, and they possess a wide range of characteristics that are common to most mammals, such as having hair or fur, producing milk for their young, and having a specialized jaw structure. Therefore, eutheria is the correct answer as it encompasses the maximum number of mammalian characters.

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  • 32. 

    Green house gases are those that :

    • Prevent entry of ultraviolet rays

    • Prevent rain fall

    • Prevent heat to escape

    • All Given Options are Correct

    Correct Answer
    A. Prevent heat to escape
    Explanation
    Greenhouse gases are those that prevent heat from escaping the Earth's atmosphere. These gases, such as carbon dioxide and methane, trap heat from the sun and contribute to the greenhouse effect. This phenomenon is essential for maintaining a habitable temperature on Earth, but excessive greenhouse gas emissions from human activities have led to global warming and climate change. Therefore, the given answer is correct as it accurately describes the role of greenhouse gases in preventing heat from escaping.

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  • 33. 

    Which of the following do not have variable valency?

    • Cobalt

    • Iron

    • Maganese

    • Zinc

    Correct Answer
    A. Zinc
    Explanation
    Zinc is the only element listed that does not have variable valency. Valency refers to the number of chemical bonds an atom can form. Cobalt, Iron, and Manganese can exhibit variable valency, meaning they can form different numbers of bonds depending on the specific compound or reaction. In contrast, Zinc typically has a valency of +2, meaning it forms two bonds in most compounds.

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  • 34. 

    An electron is moving along the axis of a solenoid carrying a current which of the following is a correct statement about the electromagnetic force acting on the electron?

    • The force acts perpendicular to its motion

    • The force acts anti-parallel to its motion

    • The force acts in the direction of motion

    • No force acts

    Correct Answer
    A. The force acts perpendicular to its motion
    Explanation
    When an electron moves along the axis of a solenoid carrying a current, it experiences an electromagnetic force. This force acts perpendicular to the motion of the electron. This can be explained by the right-hand rule, where the direction of the force is perpendicular to both the direction of the magnetic field created by the current in the solenoid and the direction of the electron's motion. Therefore, the correct statement is that the force acts perpendicular to its motion.

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  • 35. 

    In which of the following cases , the benzene rings are isolated:

    • Napthalene

    • Phenanthrene

    • Anthracene

    • Triphenylmethane

    Correct Answer
    A. Triphenylmethane
    Explanation
    Triphenylmethane is the correct answer because it consists of three phenyl groups attached to a central carbon atom, with no other benzene rings present in the molecule. This means that the benzene rings in triphenylmethane are isolated from each other. In contrast, naphthalene, phenanthrene, and anthracene all contain multiple benzene rings that are fused together, making them not isolated.

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  • 36. 

    Type of sclerenchyma cells found in seed coats are:

    • Fibers

    • Tracheids

    • Sclerids

    • Vessels

    Correct Answer
    A. Sclerids
    Explanation
    Sclerids are a type of sclerenchyma cells found in seed coats. Sclerenchyma cells are specialized for providing mechanical support to the plant. Sclerids are characterized by their thick, lignified cell walls, which make them tough and rigid. In seed coats, sclerids help to protect the developing embryo and provide structural strength to the seed. They are often irregularly shaped and can vary in size and appearance depending on the plant species.

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  • 37. 

    Which is the configuration or Cr?

    Correct Answer
    A.
  • 38. 

    Odd one Out:

    • Eagle

    • Cloud

    • Squirrel

    • Plane

    Correct Answer
    A. Squirrel
    Explanation
    The odd one out in this group is "squirrel" because it is the only living creature among the options. The other three options, eagle, cloud, and plane, are all non-living objects or natural phenomena.

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  • 39. 

    Which component enters into mitochondria after glycolysis?

    • Pyruvate

    • Acetate

    • Oxaloacetate

    • Acetyl-CoA

    Correct Answer
    A. Acetyl-CoA
    Explanation
    After glycolysis, pyruvate is converted into acetyl-CoA before entering the mitochondria. Acetyl-CoA is then used in the citric acid cycle (also known as the Krebs cycle) to generate ATP through oxidative phosphorylation. Therefore, acetyl-CoA is the correct answer as it is the component that enters the mitochondria after glycolysis.

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  • 40. 

    The  number of moles of NO2  which contains 16 g of Oxygen :

    • 0.25

    • 0.50

    • 1.0

    • 1.50

    Correct Answer
    A. 0.50
    Explanation
    The molar mass of oxygen (O) is 16 g/mol and the molar mass of nitrogen dioxide (NO2) is 46 g/mol. To find the number of moles of NO2, we divide the given mass of oxygen (16 g) by the molar mass of oxygen (16 g/mol) and then multiply by the ratio of the molar mass of NO2 to the molar mass of oxygen (46 g/mol / 16 g/mol = 2.875). Therefore, the number of moles of NO2 containing 16 g of oxygen is 0.50 moles.

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  • 41. 

    Which of the following has wings with claws?

    • Eagle

    • Kestrel

    • Archaeopteryx

    • Mallard

    Correct Answer
    A. Archaeopteryx
    Explanation
    The archaeopteryx is the correct answer because it is a prehistoric bird that lived during the late Jurassic period. It is known for having wings with claws, which is a characteristic shared with its dinosaur ancestors. This adaptation allowed the archaeopteryx to climb trees and grasp onto branches, similar to how modern birds use their feet and claws. The other options, such as the eagle, kestrel, and mallard, do not have wings with claws.

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  • 42. 

    J.Seiler in 1914 discovered which type of sex determination in moths: 

    • XO-XX

    • XY-XX

    • ZZ-ZW

    • None of Given

    Correct Answer
    A. ZZ-ZW
    Explanation
    J. Seiler discovered that moths have ZZ-ZW sex determination. This means that males have two Z chromosomes (ZZ) and females have one Z and one W chromosome (ZW). This type of sex determination is different from the XY-XX system found in humans and some other animals.

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  • 43. 

    Tincture of Iodine is :

    • in alcohol

    • in alcohol

    • in KI

    • in KI

    Correct Answer
    A. in KI
  • 44. 

    What is the mass of same no of atoms of potassium as are present in 11.5 grams of sodium?

    • 19 g

    • 19.5 g

    • 39 g

    • 78 g

    Correct Answer
    A. 19.5 g
    Explanation
    The atomic mass of sodium is 23 g/mol and the atomic mass of potassium is 39 g/mol. Since the same number of atoms of potassium are present in 11.5 grams of sodium, the mass of the same number of atoms of potassium would be half of the mass of sodium. Therefore, the mass of the same number of atoms of potassium is 11.5 grams divided by 2, which is 5.75 grams. However, the answer options provided do not include this value. Therefore, the closest option is 19.5 g, which is the correct answer.

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  • 45. 

     is Hygroscopic  powder which sublimes at :

    • 260 Degree Celsius

    • 360 Degree Celsius

    • 630 Degree Celsius

    • 690 Degree Celsius

    Correct Answer
    A. 360 Degree Celsius
    Explanation
    The correct answer is 360 Degree Celsius because the given substance is described as a hygroscopic powder that sublimes. Sublimation is the process in which a solid directly turns into a gas without passing through the liquid phase. The fact that the substance is hygroscopic means that it has a tendency to absorb moisture from the air. Therefore, at a temperature of 360 Degree Celsius, the substance will undergo sublimation and transform from a solid to a gas.

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  • 46. 

    It is the most critical phase of mitosis:

    • Prophase

    • Tellophase

    • Anaphase

    • Metaphase

    Correct Answer
    A. Anaphase
    Explanation
    Anaphase is the most critical phase of mitosis because it is the stage where the sister chromatids separate and move towards opposite poles of the cell. This process ensures that each daughter cell will receive a complete set of chromosomes. Failure to properly separate the chromosomes during anaphase can result in genetic abnormalities and cell division defects. Therefore, anaphase plays a crucial role in maintaining the integrity and stability of the genetic material during cell division.

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  • 47. 

    Continuous variations in a population were first observed by:

    • Mendel

    • Correns

    • Nilsson

    • Darwin

    Correct Answer
    A. Darwin
    Explanation
    Darwin is the correct answer because he was the first to observe and explain continuous variations in a population through his theory of natural selection. Mendel is known for his work on genetics and discrete variations, while Correns is known for his contributions to the rediscovery of Mendel's laws. Nilsson is not a relevant figure in this context. Therefore, Darwin stands out as the most appropriate choice for the observation of continuous variations in a population.

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  • 48. 

    1 NADH in respiratory chain produces:

    • 1 ATP

    • 2 ATP

    • 3 ATP

    • 4 ATP

    Correct Answer
    A. 3 ATP
    Explanation
    In the respiratory chain, 1 NADH molecule produces 3 ATP molecules. This is because NADH is oxidized in the electron transport chain, which generates a proton gradient across the inner mitochondrial membrane. This proton gradient is then used by ATP synthase to produce ATP through a process called oxidative phosphorylation. Each NADH molecule passing through the respiratory chain results in the pumping of enough protons to produce 3 ATP molecules.

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  • 49. 

    The molecule with zero dipole moment is

    Correct Answer
    A.

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