Grand Test 3 for NEET 21 ( Live Now)

A decrease in blood pressure/volume will not cause the release of

Removal of proximal convoluted tubule from the nephron will result in

Which of the following does not favour the formation of large quantities of dilute urine?

Which one of the following enables the mammalian kidney to regulate water reabsorption during states of dehydration?

Human urine contains

6. In ornithine cycle, enzyme arginase breaks down arginine into

Which one of the following statements in regard to the excretion by the human kidneys is correct?

Which vitamin is excreted out in high quantity through urine in man ?

A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is

In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?

12. Artificial insemination means

Which of the following is incorrect regarding vasectomy?

Which of the following is a hormone releasing Intra Uterine Device (IUD)?

In vitro fertilisation is a technique that involves transfer of which one of the following into the Fallopian tube?

The copper ions of IUDs

Read the following 4-statements and mark the option that has both correct statements.

(i) MTP was legalized in 1971.

(ii) Inability to conceive or produce children even after 2 years of unprotected sexual cohabitation is called infertility.

(iii) Surgical method of contraception prevents gamete formation.

(iv) MTPs are relatively safe up to 14 weeks of pregnancy.

Test tube babies are produced by

Which of these is used to control human population?

Elbow joint is an example of

Innominate is

Axis vertebra is identified by

The smallest bone of the human body is

This facial bone is unpaired

It is an outcome of irregularities in metabolism of nitrogenous waste

Out of ‘X’ pairs of ribs in humans only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation:

Jaw suspension characteristic of mammals is :-

Foramen of Magnum is present in

Cranium of man is made up of

Which of the following is a sessamoid bone ?

The number of floating ribs in human body

Which of the following is not a function of the skeletal system?

In human beings, the second cervical vertebra helps in rotatory movements of head through knob-like process called :

Zygomatic is part of :

Select the correct order of osmolarity changes in filtrate w.r.t. plasma in :-

Bowmans capsule –PCT –Thin part of descending limb of loop of henle –Thin part of ascending limb of loop of henle –DCT –End of collecting duct

Which of the following statements are not incorrect:-

(i) Liver, the largest gland in our body secretes cholesterol, degrade steroid hormones,

vitamins and drugs

(ii) Sebaceous glands eliminate certain substances like urea, sterols and sebum

(iii) Sweat produced by sweat glands is a oily fluid containing NaCl

(iv) In uremic patients urea and glucose can be removed by a process called hemodialysis

The presence of ketone bodies in urine are indicative of ?

Which of nitrogenous mainly waste eliminated through saliva is ?

Which of the following condition arises due to kidney failure ?

Which of the following is a nonsteroidal pill ?

Which of the following contraceptive method make uterus unsuitable for implantation ?

Which of the following is natural method of contraception ?

Which method of contraception has high failure rate?

Which of the following can be used as an emergency contraceptives ?

Which of the following is not a method of birth control ?

A diseased man marries a normal woman. They get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is :

Who postulated the ‘Chromosome Theory of Inheritance’ :-

Experimental verification of the chromosomal theory of inheritance done by Thomas Hunt Morgan and his colleagues they worked with

Which is incorrect for Drosophila melanogaster

The experimental verification of the chromosomal theory of inheritance by

Which of the following possess homogametic male

Which chromosome set is found in male grass hopper :-

Which of the following symbols are used for representing sex chromosome of birds :-

If somatic cells of a human male contain single Barrbody, the genetic composition of the person would be :-

In which organism female in homogametic & also have one chromosomes more than male.

Pomalin is sprayed over apple to increase fruit size, it is –

Apical dominance can be overcome by application of :

The maximum growth rate occurs in :-

Dormancy of seed is broken by :-

In tissue culture, differentiation of shoot is controlled by :-

Pine apple can made to flower in off season by the application :-

Among the following which helps in early ripening of fruits ?

Abscisic acid induces :-

In autumn leaf fall occurs, because –

The metal ion involved in the stomatal regulation is

The following percentage of water absorbed by herbaceous plants is lost in transpiration :-

Transpiration from plants would be most rapid when

Processes occur in leaves, which may lower their temperature is :-

Wilting of a plant result from excessive :-

Leaves which appear wilted in the day time recover at night because :-

Increase in CO2 concentration around leaf results in :-

Which of the following side of wall of guard cells is thick ?

Which type of transpiration is more common

Which one of the following pairs of plants are not seed producers ?

Species are considered as :-

In oogamy, fertilization involves :-

Flagella of prokaryotic and eukaryotic cells differ in :-

The standared size of herbarium sheets is :–

Most of the botanical names are derived from the following language :–

Evolutionary classification is called :–

Which of the following statements regarding nomenclature is correct ?

Most distinct type of alternation of generations is demonstrated by :

Presence of motile stage in life cycle & requirement of water as a medium to complete life cycle is diagnostic characters of :

In ferns, the permanent roots are :-

During translation initiation in prokaryotes, a GTP molecule is needed in :-

Degeneration of a genetic code is attributed to the :-

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA :-

Which one of the following is not applicable to RNA?

Satellite DNA is important because it :

If the DNA-codons are ATGATGATG and a cytosine base is inserted at the begining which of the following would be the result :-

AB, A₂ and B₂ are diatomic molecules. If the bond enthalpies of A₂,AB and B₂ are in the ratio 1 : 0.5 : 1 and the enthalpy of formation of AB from A₂ and B₂ is +100 kJ mol^-1. What is the bond enthalpy of A₂?

In which of the following solution, AgCl hs minimum solubility?

The pH of M/100 Ca(OH)2 is

The pH of a mixture of 100 ml 1M H2SO4 and 200ml 1N NaOH at 25° C IS

The solubility product of BaSO4 is 4*10^-10. The solubility of BaSO₄ in presence of 0.02 N H₂SO₄ will be

The pH of a mixture of 0.01 M HCl and 0.1 M CH₃COOH is approximately

Two samples of CH3COOH each of 10gm were taken separately in two vessels containing water of 6 litre and 12 litre respectively at 27° C. The degree of dissociation of CH3COOH will be

Which is incorrect?

The co ordination compound [ML₅]^±n having coordination number five. Its expected geometry will be

The complex compound bearing square planar geometry is

Number of unpaired electrons in the [NiCl₄]^-2 is

Which one of the following statements  about the zeolite is false?

A metallic rod of length ‘l’ is tied to a string of length 2l and made to rotate with angular speed ω on a horizontal table with one end of the string fixed. If there is a vertical magnetic field ‘B’ in the region, the e.m.f. induced across the ends of the rod is

A small particle of mass m is projected at an angle θ with the x–axis with an initial velocity v₀ in the x–y plane as shown in the figure. At a time t<v_osin θ /g, the angular momentum of the particle is

A round uniform body of radius R, mass M and moment of inertia ‘I’, rolls down (without slipping) an inclined plane making an angle θ with the horizontal. Then its acceleration is

The rms value of the electric field of the light coming from the Sun is 720 N/C. The average total energy density of the electromagnetic wave is

From the tower of height H, a particle is thrown vertically upwards with a speed u. The time taken by the particle to hit the ground is n times that taken by it to reach the highest point of its path. The relation between H,u and n is

The height at which the acceleration due to gravity becomes g/9 (where g = the acceleration due to gravity on the surface of the earth) in terms of R, the radius of the earth, is

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between
(you may take G = 6 . 67× 10^-11 Nm²/ kg²)

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass = 5.98 x 10²⁴ kg) have to be compressed to be a black hole?

Two wires are made of the same material and have the same volume. However wire 1 has cross-section area A and wire 2 has cross–sectional area 3A. If the length of wire 1 increases by ∆x on applying force F, how much force is needed to stretch wire 2 by the same amount?

The approximate depth of an ocean is 2700 m.The compressibility of water is 45.4 x 10^-11  Pa^-1 and density of water is 10³ kg/m³. What obtained at the bottom of the ocean?

The young’s modulus of steel is twice that of brass. Two wires of same length and of same area of cross section, one of steel and another of brass are suspended from the same roof. We want the lower ends of the wires to be at the same level, then the weight added to the steel and brass wires must be in the ratio of

A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N?

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth’s magnetic field is 0.3 × 10⁻⁴ T, then the e.m.f. developed between the two ends of the conductor is

A coil of self -inductance L is connected in series with a bulb b and an AC source. Brightness of the bulb decreases when

A long solenoid has 1000 turns. When a current of 4 A flows through it, the magnetic flux linked with each turn of the solenoid is 4×10^-3 Wb. The self-inductance of the solenoid is,

A sinusoidal voltage of peak value 300 V and an angular frequency ω= 400 rad/s is applied to series L-C-R circuit, in which R = 3 Ω, L = 20 mH and C = 625 µF. The peak current in the circuit is

If voltage across a bulb rated 220 V -100W drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is

Power factor of L-C-R circuit in resonation condition is

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are:

The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV, and the stopping potential for a radiation incident on this surface 5 V. The incident radiation lies in

Assertion: Electromagnetic radiations exert pressure.

Reason:  Electromagnetic-waves carry both momentum and energy.

The electric field associated with an electromagnetic wave in vacuum is given by E=i 40 cos (kz-6×10⁸t), where E, z= and t are in volt/m, meter and second respectively. The value of wave vector k is

A diverging lens with the magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of the magnitude of focal length 20 cm. A beam of parallel light falls on the diverging lens. The final image formed is

An astronomical telescope has objective eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective lens, the lenses must be separated by a distance,

Water raises in a capillary up toa extension height such that upward force of surface tension balances the force of 75 x 10^-4 N due to weight of water. If surface tension of water is 6×10^-2 N/m.The internal circumference of the capillary must be

The soap bubbles have radii in the ratio 2: 1 ratio of excess pressure in side there is

An ice-cube of density 900 kg/m³ is floating in the water of density 1000 kg/m³ The percentage of volume of the ice-cube outside the water is:

The temperature of an open room of volume 30 m³ increases from 17°C to 27°C due to sunshine. The atmospheric pressure in the room remains 1 × 105 Pa. If ni and n_f are the numbers of molecules in the room before and after heating, then n_f – n_i will be

The heat produced in a long wire is characterized by resistance, current and time through which the current passes. If the errors in measuring these quantities are respectively 1 %, 2% and 1%, then the total error in calculating the energy produced is

The latent heat of vapourisation of water is  2240. If the work done in the process of vapourisation of 1 g is 168 J, then increase in internal energy is

The root mean square velocity of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at 0⁰ C is 3180 m/s. Calculate the pressure of hydrogen gas:Density of hydrogen gas=8.99×10^-2 kg/m3, 1 atmosphere pressure= 1.01×10^5 N/m2

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K)

v_rms ,v_av  and v_mp are root mean square, average and most probable speeds of molecules of a gas obeying Maxwellian velocity distribution. Which of the following statements is correct?