NEET 2016 Phase 2 – PYQ Practice

A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. When a resistance R is connected in series, it works perfectly and the bulb consumes 500 W. The value of R is

A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is B. It is then bent into a circular coil of n turns. The magnetic field at the centre of this coil of n turns will be

Which of the following combinations should be selected for better tuning of an L-C-R circuit used for combination ?

A person can see clearly objects only when they lie between 50 cm and 400 cm from his eyes . In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use. will be

The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. The power factor of this circuit is

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is

Photons with energy 5 eV are incifent on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is 2 eV. When photons of energy 6 eV are incident on C, no photoelectrons will reach the anode A, if the stopping potential of A relative to C is

Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by

A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule of the gas is m. Which of the following gives the density of the gas ?

A body cools from a temperature 3T to 2T in 10 minutes. The room temperature is T. Assume that Newton's law of cooling is applicable. The temperature of the body at the end of next 10 minutes will be

A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass m is slightly pulled down and released, it oscillates with a time period of 3s. When the mass m is increased by 1 kg, the time period of oscillations becomes 5 s. The value of m in kg is

The second overtone of an open organ pipe has the same frquency as the first overtone of a closed pipe L metre long. The length of the open pipe will be

Planck's constant (h), speed of light in vacuum (c) and Newton's gravitional constant (G) are three fundamental constants. Which of the following combinations of these has the dimension of length ?

The correct increasing order of trans-effect of the following species is

The central dogma of molecular genetics states that the genetic information flows from

Which one of the following nitro-compounds does not react with nitrous acid?

Which one of the following is incorrect for ideal solution?

The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is

During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

Boric acid is an acid because its molecule

Which one of the following statements related to lanthanoids is incorrect?

Jahn-Teller effect is not observed in high spin complexes of

Which of the following fluro-compounds is most likely to behave as a Lewis base ?

Which of the following pairs of d-orbitals will have electron density along the axes ?

Among the following, which one is a wrong statement ?

Which one of the following compounds shows the presence of intramolecular hydrogen bond?

Which of the following pairs of ions is isoelectronic and isostructural ?

In which of the following molecules, all atoms are coplanar?

The compound that will react most readily with gaseous bromine has the formula

Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ?

Which of the following can be used as the halide component for Friedel-Crafts reaction?

Hot concentrated sulphate acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.

Oxidative phosphorylation is

Phytochrome is a

Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins?

The partial pressure of oxygen in the alveoli of the lungs is

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

Serum differs from blood in

Osteoporosis, an age-related disease of skeletal system, may occur due to

The part of nephron involved in active reabsorption of sodium is

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

Graves' disease is caused due to

In majority of angiosperms

The ovule of an angiosperm is technically equivalent to

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisation.

The posterior pituitary gland is not a 'true' endocrine gland because

Pollination in water hyacinth and water lily is brought about by the agency of

Which of the following depicts the correct pathway of transport of sperms?

The term 'polyadelphous' is related to

Study the four statements (A-D) given below and select the two correct ones out of them. A.  Definition of biological species was given by Ernst Mayr. B.  Photoperiod does not affect reproduction in plants. C.  Binomial nomenclature system was given by R.H. Whittaker. D.  In unicellular organisms, reproduction is synonymous with growth. The two correct statements are

Methanogens belong to

The label of a herbarium sheet does not carry information on

Select the wrong statement.

Which one of the following statements is wrong?

Conifers are adapted to tolerate extreme environmental conditions because of

Choose the correct statement

How many plants among Indigofera., Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?

Radial symmetry is found in the flowers of

Several hormones like hCG, hPL, estrogen, progesterone are produced by

Free-central placentation is found in

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

During cell growth, DNA synthesis takes place on

Which of the following is the least likely to be involved in stablishing the three-dimensional folding of most proteins?

A non-proteinaceous enzyme is

If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '–' refers to

A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using

Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase [ADA] deficiency ?

Stirred-tank bioreactors have been designed for -

Which of the following is correct for r-selected species ?

The principle of competitive exclusion was stated by

Which of the following restriction enzymes produces blunt ends ?

How many hot spots of biodiversity in the world have been identified till date by Norman Myers ?

Red List contains data or information on

Which of the following National Parks is home to the famous musk deer or hangul ?

The primary producers of the deep-sea hydrothermal vent ecosystem are

Which of the following is not a component of downstream processing ?

Which of the following is correctly matched ?

Cortex is the region found between -

The balloon-shaped structures called tyloses

In male cockroaches, sperms are stored in which part of the reproductive system ?

Smooth muscles are

Select the mismatch.

Select the wrong statement-

A cell organelle containing hydrolytic enzymes is

The equivalent of a structural gene is -

Which of the following is incorrect regarding vasectomy ?

The mechanism that causes a gene to move from one linkage group to another is called

Embryo with more than 16 blastgomeres formed due to in vitro fertilization is transferred into

Which of the following is hormone releasing IUD ?

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is

Taylor conducted the experiments to prove semiconservative mode of chromosome replication on

Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria ?

A molecule that can act as a genetic material must fulfill the traits given below, except

DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the

The chronological order of human evolution from early to the recent is

Which of the following is correct regarding AIDS causative agent HIV ?

Which of the following sets of diseases is caused by bacteria ?

Which of the following is the correct sequence of events in the origin of life ? I. Formation of protobionts II. Synthesis of organic monomers III. Synthesis of organic polymers IV. Formation of DNA-based genetic systems

In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

Genetic drift operates in

Which one of the following is wrong for fungi?