NEET 2022 Phase 2 – PYQ Practice

An energy of 484 J is spent in increasing the speed of a flywheel from 60 rpm to 360 rpm. The moment of inertia of the flywheel is :

During a cloudy day, a primary and a secondary rainbow may be created, then the :

The reciprocal of resistance is :

Two copper vessels A and B have the same base area but of different shapes. A takes twice the volume of water as that B requires to fill upto a particular common height. Then the correct statement among the following is :

The distance covered by a body of mass 5 g having linear momentum 0.3 kg m/s in 5 s is :

The distance between the two plates of a parallel plate capacitor is doubled and the area of each plate is halved. If C is its initial capacitance, its final capacitance is equal to

The restoring force of a spring with a block attached to the free end of the spring is represented by

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : When a fire cracker (rocket) explodes in mid air, its fragments fly in such a way that they continue moving in the same path, which the fire cracker would have followed, had it not exploded. Reason (R) : Explosion of cracker (rocket) occurs due to internal force only and no external force acts for this explosion. In the light of the above statements, choose the most appropriate answer from the option given below

The shape of the magnetic field lines due to an infinite long, straight current carrying conductor is

The light rays having photons of energy 4.2 eV are falling on a metal surface having a work function of 2.2 eV. The stopping potential of the surface is

Identify the function which represents a non-periodic motion.

If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the :

The physical quantity that has the same dimensional formula as pressure is

The incorrect statement about the property of a Zener diode is :

A standard filament lamp consumes 100 W when connected to 200 V ac mains supply. The peak current through the bulb will be :

The position-time (x - t) graph for positive acceleration is

Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel contains helium (monoatomic), the second contains fluorine (diatomic) and the third contains sulfur hexafluoride (polyatomic). The correct statement, among the following is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Chlorine is an electron withdrawing group but it is ortho, para directing in electrophilic aromatic substitution. Reason (R) : Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution, however due to the more pronounced resonance effect, the halogen stabilises the carbocation at ortho and para positioins. In the light of the above statements, choose the most appropriate answer from the options given below :

The correct order of first ionization enthalpy for the given four elements is :

Which of the following reactions is a part of the large scale industrial preparation of nitric acid?

0.01 M acetic acid solution is 1% ionised, then pH of this acetic acid solution is :

The half life of a first order reaction is 2000 years. If the concentration after 8000 years is 0.02 M, then the initial concentration was :

The decreasing order of boiling points of the following alkanes is : (a) heptane (b) butane (c) 2-methylbutane (d) 2-methylpropane (e) hexane Choose the correct answer from the options given below :

Decrease in size from left to right in actinoid series is greater and gradual than that in lanthanoid series due to

Which of the following reactions is not an example for nucleophilic addition-elimination reaction?

Which of the following reactions is a decomposition redox reaction?

The correct order of bond angles in the following compounds/species is :

The incorrect statement about denaturation of proteins is :

Which of the following is the most stable carbocation?

A vessel contains 3.2 g of dioxygen gas at STP (273.15 K and 1 atm pressure). The gas is now transferred to another vessel at constant temperature, where pressure becomes one third of the original pressure. The volume of new vessel in L is : (Given : molar volume at STP is 22.4 L)

Which one of the following reaction sequence is incorrect method to prepare phenol?

The incorrect method for the synthesis of alkenes is

The incorrect method to synthesize benzaldehyde is

Given below are two statements: Statement I : Sickle cell anaemia and haemophilia are autosomal dominant traits. Statement II : Sickle cell anaemia and haemophilia are disorders of the blood. In the light of the above statements, choose the correct answer from the options given below :

Which stage of meiosis can last for months or years in the oocytes of some vertebrates?

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : When a particular restriction enzyme cuts strand of DNA, overhanging stretches or sticky ends are formed. Reason (R) : Some restriction enzymes cut the strand of DNA a little away from the centre of palindromic site. In the light of the above statements, choose the correct answer from the options given below :

Give the correct descending order of organisms with reference to their estimated number found in Amazon forest. (a) Plants (b) Invertebrates (c) Fishes (d) Mammals (e) Birds Choose the correct answer from the options given below :

In lac operon, z gene codes for

The 5-C compound formed during TCA cycle is

In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme

All successions irrespective of the habitat proceed to which type of climax community?

When a carrier protein facilitates the movement of two molecules across the membrane in same direction, it is called

The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called

Interfascicular cambium is present between

Which of the following growth regulators is an adenine derivative?

The chromosomal theory of inheritance was proposed by

Which of the following statement is not correct?

The Phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as

The residual persistent part which forms the perisperm in the seeds of beet is

The World Summit on sustainable development held in 2002 in Johannesburg, South Africa pledged for

The type of tissue commonly found in the fruit wall of nuts is :

The pioneer species in a hydrarch succession are

Given below are two statements Statement I : DNA polymerases catalyse polymerisation only in one direction, that is 5' → 3'. Statement II : During replication of DNA, on one strand the replication is continuous while on other strand it is discontinuous. In the light of the above statements, choose the correct answer from the options given below:

The species that come to appear in bare area are called

Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of

To ensure that only the desired pollens fall on the stigma in artificial hybridization process (a) the female flower buds of plant producing unisexual flowers need not be bagged. (b) there is no need to emasculate unisexual flowers of selected female parent (c) emasculated flowers are to be bagged immediately after cross pollination (d) emasculated flowers are to be bagged after removal of anthers (e) bisexual flowers, showing protogyny are never selected for cross Choose the correct answer from the options given belows

The number of time(s) decarboxylation of isocitrate occurs during single TCA cycle is

Separation of DNA fragments is done by a technique known as

In general the egg apparatus of embryo sac in angiosperm consists of

Primary proteins are also called as polypeptides because :

Which type of substance would face difficulty to pass through the cell membrane?

If a female individual is with small round head, furrowed tongue, partially open mouth and broad palm with characteristic palm crease. Also the physical, psychomotor and mental development is retarded. The karyotype analysis of such an individual will show :

The enzyme (a) is needed for isolating genetic material from plant cells and enzyme (b) for isolating genetic material from fungus. Choose the correct pair of options from the following :

Identify the correct sequence of events during Prophase I of meiosis: (a) Synapsis of homologous chromosomes (b) Chromosomes become gradually visible under microscope (c) Crossing over between non-sister chromatids of homologous chromosomes (d) Terminalisation of chiasmata (e) Dissolution of synaptonemal complex Choose the correct answer from the options given below:

Which of the following pair represents free living nitrogen fixing aerobic bacteria?

Frugivorous birds are found in large numbers in tropical forests mainly because of :

Identify the correct statements regarding chemiosmotic hypothesis: (a) Splitting of the water molecule takes place on the inner side of the membrane. (b) Protons accumulate within the lumen of the thylakoids. (c) Primary acceptor of electron transfers the electrons to an electron carrier. (d) NADP reductase enzyme is located on the stroma side of the membrane. (e) Protons increase in number in stroma. Choose the correct answer from the options given below:

Which of the following animals has three chambered heart?

Which of the following types of epithelium is present in the bronchioles and Fallopian tubes?

Which of the following is not an Intra Uterine Device?

Which of the following reasons is mainly responsible for graft rejection in transplantation of organs?

Bivalent or Tetrad formation is a characteristic feature observed during

Give below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): FSH which interacts with membrane bound receptors does not enter the target cell. Reason (R): Binding of FSH to its receptors generates second messenger (cyclic AMP) for its biochemical and physiological responses. In the light of the above statements, choose the most appropriate answer from the options given below

Choose the correct statement about a muscular tissue

Identify the region of human brain which has pneumotaxic centre that alters respiratory rate by reducing the duration of inspiration.

The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called

Select the incorrect match regarding the symbols used in the Pedigree analysis:

If the pH in lysosomes is increased to alkaline, what will be the outcome?

According to the sliding filament theory:

Pathogenic bacteria gain resistance to antibiotics due to changes in their :

Panspermia, an idea that is still a favourite for some astronomers, means:

Why CNG is considered better fuel than diesel? (a) It can not be adulterated. (b) It takes less time to fill the fuel tank (c) It burns more efficiently. (d) It is cheaper. (e) It is less inflammable. Choose the most appropriate answer from the options given below :

Which of the following statements are correct with respect to vital capacity? (a) It includes ERV, TV and IRV (b) Total volume of air a person can inspire after a normal expiration. (c) The maximum volume of air a person can breathe in after forced expiration. (d) It includes ERV, RV and IRV. (e) The maximum volume of air a person can breath out after a forced inspiration. Choose the most appropriate answer from the options given below :

How many secondary spermatocytes are required to form 400 million spermatozoa?

Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by ______.

Arrange the components of mammary gland. (from proximal to distal). (a) Mammary duct (b) Lactiferous duct (c) Alveoli (d) Mammary ampulla (e) Mammary tubules Choose the most appropriate answer from the options given below :

Western Ghats have a large number of plants and animal species that are not found anywhere else. Which of the following term is used to notify such species?

Two butterfly species are competing for the same nectar of a flower in a garden. To survive and coexist together, they may avoid competition in the same garden by :

Choose the incorrect enzymatic rection:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): During pregnancy the level of thyroxine is increased in the maternal blood. Reason (R): Pregnancy is characterised by metabolic changes in the mother. In the light of the above statements, choose the most appropriate answer from the options given below:

Choose the correct statements: (a) Bones support and protect softer tissues and organs (b) Weight bearing function is served by limb bones (c) Ligament is the site of production of blood cells. (d) Adipose tissue is specialised to store fats. (e) Tendons attach one bone to another. Choose the most appropriate answer from the options given below:

If DNA contained sulfur instead of phosphorus and proteins contained phosphorus instead of sulfur, what would have been the outcome of Hershey and Chase experiment?

Select the incorrect statements with respect to Cyclostomes: (a) They lack scales and paired fins. (b) They have circular mouth with jaws. (c) They bear 6-15 pairs of gills. (d) They migrate to deep sea for spawning. Choose the most appropriate answer from the options given below:

A unique vascular connection between the digestive tract and liver is called______.

Milk of transgenic ‘Cow Rosie’ was nutritionally more balanced product for human babies than natural cow milk because it contained:

Gout is a type of disorder which leads to:

Which of the following methods is not commonly used for introducing foreign DNA into the plant cell?

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Spirulina is a microbe that can be used for reducing environmental pollution. Reason (R) : Spirulina is a rich source of protein, carbohydrates, fats, minerals and vitamins. In the light of the above statements, choose the most appropriate answer from the options given below:

With respect to metaphase, which of the following statements is incorrect?

Against the codon 5' UAC 3', what would be the sequence of anticodon on tRNA?

Arrange the following formed elements in the decreasing order of their abundance in blood in humans: (a) Platelets (b) Neutrophils (c) Erythrocytes (d) Eosinophils (e) Monocytes Choose the most appropriate answer from the options given below:

Which of the following are true about the taxonomical aid 'key'? (a) Keys are based on the similarities and dissimilarities. (b) Key is analytical in nature. (c) Keys are based on the contrasting characters in pair called couplet. (d) Same key can be used for all taxonomic categories. (e) Each statement in the key is called Lead. Choose the most appropriate answer from the options given below:

A normal girl, whose mother is haemophilic marries a male with no ancestral history of haemophilia. What will be the possible phenotypes of the offspring? (a) Haemophilic son and haemophilic daughter. (b) Haemophilic son and carrier daughter. (c) Normal daughter and normal son. (d) Normal son and haemophilic daughter. Choose the most appropriate answer from the options given below:

IUDs are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about IUDs ? (a) IUDs decrease phagocytosis of sperm within the uterus. (b) The released copper ions suppress the sperm motility. (c) IUDs do not make the cervix hostile to the sperm. (d) IUDs suppress the fertilization capacity of sperm. (e) The IUDs require surgical intervention for their insertion in the uterine cavity. Choose the most appropriate answer from the options given below:

Select the correct statement regarding mutation theory of evolution.

Excretion in cockroach is performed by all, EXCEPT:

Select the correct statements. (a) Angiotensin II activates the cortex of adrenal gland to release aldosterone. (b) Aldosterone leads to increase in blood pressure. (c) ANF acts as a check on renin-angiotensin mechanism. (d) ADH causes vasodilation. (e) Vasopressin is released from adenohypophysis. Choose the most appropriate answer from the options given below :

If A and C make 30% and 20% of DNA, respectively, what will be the percentage composition of T and G?

Refer to the following statements for agarose-gel electrophoresis: (a) Agarose is a natural polymer obtained from sea-weed. (b) The separation of DNA molecules in agarose-gel electrophoresis depends on the size of DNA. (c) The DNA migrates from negatively-charged electrode to the positively-charged electrode (d) The DNA migrates from positively-charged electrode to the negatively-charged electrode. Choose the most appropriate answer from the options given below :