NEET 2016 Phase 1 – PYQ Practice

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of emf's is

The magnetic susceptibility is negative for

Out of the following options which one can be used to produce a propagating electromagnetic wave ?

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

An electron of mass m and a photon have same energy E. The ratio of de-Broglie wavelengths associated with them is

What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop?

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is

From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?

A disc and a sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first?

A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then

An air column, closed at one end open at the other, resonates with a tuning fork when the smallest length of the column is 50 cm. The next larger length of the column resonating with the same tuning fork is

Two electrons occupying the same orbital are distinguished by

Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

The correct statement regarding the basicity of arylamines is

The product formed by the reaction of an aldehyde with a primary amine is

The addition of a catalyst during a chemical reaction alters which of the following quantities?

In a protein molecule various amino acids are linked together by

Among the following the correct order of acidity is

Which is the correct statement for the given acids?

The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64) and Tb (Atomic No.65) are

Predict the correct order among the following :

Which of the following biphenyls is optically active ?

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is

Which of the following reagents would distinguish cis-cyclopenta-1-2-diol from the trans-isomer?

Which one given below is a non-reducing sugar?

The correct statement regarding RNA and DNA, respectively is

Asthma may be attributed to

Emerson's enhancement effect and Red drop have been instrumental in the discovery of

Water soluble pigments found in plant cell vacuoles are

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?

In a chloroplast the highest number of protons are found in

The Avena curvature is used for bioassay of

Name the chronic repiratory disorder caused mainly by cigarette smoking.

Blood pressure in the pulmonary artery is

In mammals, which blood vessel would normally carry largest amount of urea?

Reduction in pH of blood will

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options.

Lack of relaxation between successive stimuli in sustained muscle contraction is known as

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

Which one of the following statements is not true?

The coconut water from tender coconut represents

The amino acid tryptophan is the precursor for the synthesis of

Seed formation without fertilisation in flowering plants involves the process of

Proximal end of the filament of stamen is attached to the

Select the incorrect statement.

Changes in GnRH pulse frequency in females is controlled by circulating levels of

Tricarpellary, syncarpous gynoecium is found in flowers of

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the Kingdom

Which of the following statements is wrong for viroids?

One of the major components of cell wall of most fungi is

Nomenclature is governed by certain universal rules. Which one of the following is countrary to the rules of nomenclature?

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

In bryophytes and pteridophytes, transport of male gametes requires

Select the correct statement

Which one of the following characteristics is not shared by birds and mammals?

Which of the following features is not present in the Phylum Arthropoda?

Which of the following characteristic features always holds true for the corresponding group of animals?

Identify the correct statement on 'inhibin'.

Cotyledon of maize grain is called

Which of the following is not a stem modification?

The standard petal of a papilionaceous corolla is also called

Stems modified into flat green organs performing the functions of leaves are known as

In meiosis crossing over is initiated at

A typical fat molecule is made up of

Spindle fibres attach on to

Which of the following is not a characteristic feature during mitosis in somatic cells?

Which one of the following statements is wrong?

The term ecosystem was coined by :

Which of the following is not a feature of the plasmids ?

The taq polymerase enzyme is obtained from

Which part of the tobacco plant is infected by Meloidogyne incognita ?

It is much easier for a small animals to run uphill than for a large animal, because -

Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

The two polypeptides of human insulin are linked together by

Which of the following is a restriction endonuclease ?

Gause's principle of competitive exclusion states that -

Which of the following would appear as the pioneer organisms on bare rocks?

Which is the National Aquatic Animal of India ?

Which of the following is the most important cause of animals and plants being driven to extinction ?

When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K)

Which one of the following is a characteristic feature of cropland ecosystem ?

Which type of tissue correctly matches with its locations ?

Specialised epidermal cells surrounding the guard cells are called -

Mitochondria and chloroplast are- (a) semi-autonomous organelles (b) formed by division of pre existing organelles and they contain DNA but lack protein synthesising machinery Which one of the following options is correct?

Which of the following features is not present in Periplaneta americana?

Which one of the following cell organelles is enclosed by a single membrane?

Microtubules are the constituents of

Which one of the following is the starter codon ?

Which of the following statements is not correct?

Fertilisation in humans is practically feasible only if

In context of Amniocentesis, which of the following statement is incorrect ?

Which of the following approaches does not give the defined action of contraceptive ?

Which of the following most appropriately describes haemophilia ?

A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is contaning more number of chromosomes as compared to other dividing cells. This would results in -

Pick out the correct statements : (a) Haemophilia is a sex-linked recessive disease. (b) Down's syndrome is due to aneuploidy. (c) Phenylketonuria is an autosomal recessive gene disorder. (d) Sickle cell anaemia is an X – linked recessive gene disorder.

Which one of the following statements is wrong?

A complex of ribosomes attached to a single strand of RNA is known as :

Which of the following is required as inducer(s) for the expression of Lac operon?

Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain -

Which of the following statements is not true for cancer cells in relation to mutations ?

Following are the two statements regarding the origin of life - (a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes (b) The first autotrophic organisms were the chemoautotrophs that never released oxygen Of the above statements which one of the following options is correct ?

In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormally and it attacks self-cells, then it leads to

Which of the following structures is homologus to the wing of a bird ?

Analogous structures are a result of :

Which of the following is wrongly matched in the given table?