A car of mass 1000 kg moves on a circular track of radius 40 m. If the coefficient of friction is 1.28. The maximum velocity with which the car can be moved, is
The escape velocity for the earth is 11.2 km/s. The mass of another planet 100 times mass of earth and its radius is 4 times radius of the earth. The escape velocity for the planet is
Light travels faster in air than that in glass. This is accordance with
The speed of air flow on the upper and lower surfaces of a wing of an aeroplane are v1 and v2 respectively. If A is the cross section area of the wing and p is the density of air, then the upward life is
A body is thrown with a velocity of 9.8 m/s making an angle of 30° with the horizontal. It will hit the ground after a time
A radioactive element 90X238 decays into 83Y222The number of β-particles emitted are
Minimum excitation potential of Bohr’s first orbit in hydrogen atom is
A gas expands 0.25 m3 at constant pressure 103 N/m2, the work done is
The work done in increasing the size of a soap film for 10 cm x 6m to 10 cm x 11cm is 3 x 10-4 J. The surface tension of the film is
A parallel palte condenser is filled with two dielectrics as shown in figure. Area of each pate is A m2 and the separation is d metre.
The dielectric constants are K1 and K2 respectively. Its capacitance in farad will be
A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an upright image of the object coincident with it
A battery of emf 10 V and internal resistance of 0.5 ohm is connected across a variable resistance R. The maximum value of R is given by
For a R/Cv gas = 0.67. This gas is made up of cv molecules which are
A point source of light is placed 4 m below the surface of water of refractive index 5/3.
The minimum diameter of a disc which should be placed over the source on the surface of water to cut-off all light coming out of water is
A moving body of mass m and velocity 3 km/h collides with a rest body of mass 2 m and stick to it. Now the combined mass starts to move. What will be the combined velocity?
A transverse wave is represented by the equation
y = y0 sin (2π/λ) – 27c (vt – k)
For what value of X is the particle velocity equal to two times the wave velocity
Ionisation potential of hydrogen atom is 13.6 eV. Hydrogen atom on the ground state rarely excited by monochromatic radiation of photon 12.1 eV. The special line emitted by a hydrogen atom according to Bohr’s theory will be
The internal resistance of a primary cell is 4Ω. It generates a current of 0.2 A in an external resistance of 21Ω The rate at which chemical energy to consumed in providing current is
The binding energy per nucleon is maximum in the case
Two rigid bodies A and B rotate with rotational kinetic energies EA and EBrespectively. The moments of inertia of A and B about the axis of rotation are IA and IB respectively.
If IA = IB and EA = 100 = EB the ratio of 4 angular momentum (LA) of A to the angular momentum (LB) of B is
The working principle of a ball point pen is
Progressive waves are represented by the equation
y1 = a sin (ωt – x)
and y2 = b cos (ωt — x)
The phase difference between waves is
Two simple pendulums of length 0.5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed x oscillations, where k is
A balloon contains 500 m3 of helium at 27°C and 1 atmosphere pressure. The volume of the helium at —3° C temperature and 0.5 atmosphere pressure will be
220 V, 50 Hz, AC source is connected to an inductance of 0.2 H and a resistance of 20 Ω in series. What is the current in the circuit?
In 0.2 s, the current in a coil increases from 2.0 A to 3.0 A. If inductance of coil is 60 mH, then induced current in external resistanceof 3 Ω will be
Two coherent light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are
A galvanometer acting as a voltmeter should have
The equivalent resistance across A and B is A
A black body has a wavelength of k at temperature 2000 K. Its corresponding wavelength at temperature 3000 K will be
At room temperature, copper has free electron density of 8.4 x 1028 m-3. The electron drift velocity in a copper conductor of cross-sectional area of 10-6m2 and carrying a current of 5.4 A, will be
A uniform wire of resistance R and length L is cut into four equal parts, each of length L/4 which are then connected in parallel combination.
The effective resistance of the combination will be
The half-life of radio isotope is 4 h. If initial mass of the isotope was 200 g, then mass remaining after 24 h will be
Which logic gate is represented by the following combination of logic gates?
The work function for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5eV.
According to Einstein’s equation the metals which will emit photo, electrons for a radiation of wavelength 4100 Å is/are
Two boys are standing at the ends A and B of a ground, where AB = a. The boy at B starts running in a direction perpendicular to AB with velocity v1. The boy at A starts running simultaneously with velocity u and catches the other boy in a time t, where t is
A 5 amp fuse wire can withstand a maximum power of 1 W in circuit. The resistance of the fuse wire is
A force F is given F = at + bt2 , where, t is time. What are the dimensions of a and b?
Two equal negative charges – q are fixed at the point (0, a) and (0, – a) on the y-axis. A positive charge Q is released from rest at the point (2a, 0) on the x-axis. The charge will
An ice-cube of density 900 kg/m3 is floating in water of density 1000 kg/m3. The percentage of volume of ice-cube outside the water is
Number of hydrogen-bonded water molecules associated in CuSO4 – 5H0O is
Which of the following species do not show disproportionation on reaction?
ClO–, ClO2– ,ClO3– and ClO4–
Which one of the following acts as a nucleophile?
During estimation of nitrogen in the organic compound by Kjeldahl’s method, the ammonia evolved from 0.5 g of the compound in Kjeldahl’s estimation of nitrogen, neutralised 10 mL of 1M H2SO4.
Find out the percentage of nitrogen in the compound.
Which of the following compounds have highest melting point?
Identify the major product ‘X’ obtained in the following reaction.
Addition of water to alkynes occurs in acidic medium and in the presence of Hg2+ions as a catalyst. Which of the following products will be formed on addition of water to but-l-yne under these conditions?
The correct order of increasing acidic strength is
KF has ccp structure. How many F– ions and octahedral voids are there in this unit cell respectively?
The osmotic pressure of blood is 8.21 atm at 37°C. How much glucose would be used for an injection that is at the same osmotic pressure as blood?
At equilibrium, the rate of dissolution of a solid solute in a volatile liquid solvent is
A chelating agent has two or more than two donor atoms to bind a single metal ion.
Which of the following is not a chelating agent?
On addition of small amount of KMn04 to conc. H2SO4, a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.
The magnetic nature of elements depends on the presence of unpaired electrons.
Identify the configuration of transition element, which shows highest magnetic moment.
Which of the following elements can be involved in pπ — dπ bonding?
On addition of conc. H2SO4 to a chloride salt, colourless fumes are evolved but in case of iodide salt, violet fumes come out. This is because.
Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?
Which of the following statement is not correct about an inert electrode in a cell?
Which of the following statement is correct?
Which of the following curves is in accordance with Freundlich adsorption isotherm?
A number of elements available in earth’s crust but most abundant elements are
The element which forms oxides in all oxidation states + 1 to + 5 is
Which of the following is the increasing order of enthalpy of vaporization?
When Br2 is treated with aqueous solutions of NaF, NaC1, NaI separately
In the presence of a catalyst, the heat evolved or absorbed during the reaction
The rate of a gaseous reaction is given by the expression k[A][B]. If the volume of the reaction vessel is suddenly reduced to 1/4 th of the initial volume, the reaction rate relating to original rate will be
Which of the following is 3° amine?
Which of the following enhances lathering property of soap?
The deficiency of vitamin C causes
Excess fluoride (over 10 ppm) in drinking water can cause
For the process to occur under adiabatic conditions, the correct condition is
(3/2O2(g)) → O3(g); Kp for this reaction is 2.47 x 10-29. At 298 K, ΔrG° for conversion of oxygen to ozone will be
Which one of the following statements about C2 molecule is wrong?
The type of hybridisation in SF6 molecule is
To determine the hybridization of sulfur hexafluoride we will look at the orbitals involved and the bonds that are formed during the combination of sulphur and fluorine molecules. The orbitals involved are 3s, 3py, 3py, 3pz and 3dx2–y2 and 3dz2. During the formation of SF6, the sulphur atom which is the central atom in its ground state will have 3s23p4 configuration. In the excited state, the electron pairs in 3s and 3px orbitals get unpaired and one out of each pair is promoted to vacant 3dz2 and 3dx2-y2 orbitals. Now all these six orbitals (one 3s, three 3p and twp 3d) which are half-filled get hybridised resulting in the formation of six sp3d2 hybrid orbitals. Further, the sp3d2 hybrid orbitals overlap with a 2p orbital of fluorine and they form the S-F bond.
Among LiCl, BeCl2, BCl3 and CCl4 , the covalent bond character follows the order
Maximum number of electrons in a subshell of an atom determined by the following?
The average kinetic energy of an ideal gas per molecule in SI units at 25°C will be
pka of acetic acid and pKb of ammonium hydroxide are 4.76 and 4.75 respectively.
Calculate the pH of ammonium acetate solution.
The value of Ke for the reaction, 2A ⇔ B + C is 2 x 10-3. At a given time, if the composition of reaction mixture is [A] = [B]=[C]= 3 x 10-3 M. Which is true?
Pellagra is caused by deficiency of vitamins
Notochord originates from
Parthenogenesis is a term of
Bartholin’s gland is found in
Which one of the following statements best characterise the testis?
Drugs that cause malformation in developing embryo during pregancy are called
Which set is similar?
Which one out of (a) to (d) given below correctly represents the structural formula of the basic amino acid?
Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/ phase in the cell cycle?
Which one of the following structural formula of two organic compounds is correctly identified along with its related function?
Which is substitution of mitochondria in E. colt?
Animal cell differ from plant cell in possessing
Which of the following organelles does not contain RNA?
Dutrochet has given the concept about cell in
The scientific name of gharial is
Which of the given option is correct regarding the statments?
Statement ICephalochordata bears notochord all along the body throughout life.
Statements IIUrochordate bears vertebral column only in tail region throughout the life.
In which of the following haemocyanin pigment is found?
Which of the following cells in earthworm play a role similar to liver in vertebrates?
Match the following and select the correct option.
Chondrichthyes is characterised by
Ichthyology is study of
What will happen if ligaments are torn?
Achondroplasia is a disease related with the defect in the formation of
Space in the jaw bone unoccupied by teeth is called
Identify the correct set, which shows the name of the enzyme from where it is secreted and substrate upon which it acts.
Yellow bone marrow is found specially in the medullary cavity
Match the items of column I with column II and choose the correct option from the codes given below.
Endemic goitre is a state of
Hormone responsible for the secretion of milk after parturition is
What is another name for the wind pipe?
Soil salinity is measured by
Predation and parasitism are which type of interactions.
The ultimate source of energy for living being is
Which of the following species are restricted to an area?
Select the incorrect statement.
The effect of cigarette smoking and radon in combination on lungs is
The thermostable enzymes, Taq and Pfu, isolated from thermophilic bacteria are
Biolistic technique is used in
The largest gene in man is
Herbicide resistant gene in plant is
In photosynthesis carbon dioxide is converted to carbohydrates. It is a process.
Through photosynthesis green plants convert carbon dioxide to the glucose in presence of light.
It is an anabolic process as it involves synthesis of glucose from carbon dioxide and water. It is an endergonic process as it absorbs the photochemical energy from sunlight to synthesize complex glucose molecules.
Hence D is correct.
Which of the following is not an auxin?
Which of the following properties is shown by cytokinins?
Which of the following characteristics is are exhibited by C4 -plants?
I. Kranz anatomy.
II. The first product of photosynthesis is oxaloacetic acid.
III. Both PEP carboxylates and ribulosebiphosphate carboxylate act as carboxylating enzymes.
The correct option is
Which of the following plant keeps its stomata open during night and closed during the day?
Genetic dwarfism can be overcome by
Hormone inducing fruit ripening is
The year 1900 AD is highly significant for geneticists due to
Skin colour is controlled by
Which of the following cross will produce terminal flower in garden pea?
Which one of the following pairs of plants are not seed producers?
Which one of the following is heterosporous?
Gyms revoluta is popularly known as
Match the following with correct combination.
Bacterial endotoxin is
Endosperm of gymnosperms is
First vascular plant is
Diatomaceous earth is obtained from
Which of the following is an epidermal cell containing chloroplast?
The structures present in the roots to absorb water and minerals is
Lady finger belongs to family
The interxylary phloem is found in the stem of
Wound healing is due to
Angular collenchyma occurs in
In pteridophytes, phloem is without
Match the following entities of column I with their respective orders of column II and choose the correct combination form the option.
Agar-agar is produced by
In DNA, when AGCT occurs, their association is as per which of the following pair
A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is
Lactose is composed of
Meiosis is best observed in dividing
Study the following statements and select the correct option.
I. Tapetum nourishes the developing pollen grains.
II. Hilum represents the junction between ovule and funicle.
III. In aquatic plants such as water hyacinth and water lily, pollination is by water.
IV. The primary endosperm nucleus is triploid.
Masses of pollen grains, i.e. ,pollinia is found in
Morphine, which is used as an analgesic is obtained from
Pebrine is a disease of
Factor govering the earth surface is
The direction of energy flow is
If the Bengal tiger become extinct
Biological treatment of water pollution is done with the help of
Directions (Q Nos. 1-5) In the following questions, sentences are given with blanks to be filled in with an appropriate word. Four alternatives are suggested for each questions. Choose the correct alternative out of the four.
Q. The little girl for the light switch in the dark.
The summit meeting provided him the much shot in the arm.
We must the tickets for the movie in advance.
The State Transport Corporation has a loss of &8377; 5 crore this year.
One and you know who among them is the culprit.
Directions (Q Nos. 6-10) In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word.
Directions (Q Nos. 11-15) In the following questions, choose the word opposite in meaning to the given word.
Directions (Q Nos. 16-20) In the following questions, four alternatives are given for the idiom/phrase printed in bold in the sentence. Choose the alternative which best expresses the meaning of the idiom/phrase.
We have to keep our fingers crossed till the final result is declared.
The members of the group were at odds over the selection procedure.
The popularity of the yesteryears’ superstar is on the wane.