MHT - CET MCQ

The truth-table given below is for which gate?

A	B	C
0	0	1
0	1	1
1	0	1
1	1	0

A transistor when connected in common emitter mode has a ____________.

The maximum efficiency of full-wave rectifier is ____________.

What percentage of radioactive substance is left after five half-lives?

A radioactive substance has half life of 3 hours. 75 % of the substance would decay in ____________.

The relation between magnetic moment of revolving electron 'M' and principle quantum number 'n' is ______.

In photoelectric effect, graph of saturation current versus frequency of light is plotted. The nature of the graph will be ____________.

At what frequency (approximate) will the inductive reactance of 4 H inductance be equal to the capacitive reactance of 4 µF capacitance?

With an increase in the frequency of an A.C. supply, the inductive reactance ______.

The readings of ammeter and voltmeter in the following circuit are respectively 

A 60 `Omega` electric heater is connected to a 200 V, 50 Hz mains supply. The peak value of electric current flowing in the circuit is approximately ______.

The mutual inductance between two coils is 0.09 henry. If the current in the primary coil changes from 0 to 20 A in 0.006 s, the e.m.f. induced in the secondary coil at that instant is ____________.

A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field B, as shown in figure. The potential difference developed across the ring when its speed is v, is ____________. 

The magnetic susceptibility of paramagnetic materials is ____________.

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field B `hat"i".` The torque on the coil due to the magnetic field is: ____________.

A galvanometer of resistance 20 Ω has a current sensitivity of 5 div/mA. The instrument has 50 divisions. It can be converted into a voltmeter reading up to 25 volts by connecting a resistance of ______

A voltmeter of range 3 V and resistance 200 `Omega` cannot be converted into an ammeter of rang ____________.

A student connected the circuit as shown in the figure to determine the internal resistance of a cell E1 by potentiometer (E > E1). He is unable to obtain the null point because ______.

The current in the arm CD of the circuit will be

Five identical capacitors, of capacitance 20 µF each, are connected to a battery of 150 V, in a combination as shown in the diagram. What is the total amount of charge stored? 

A plane wavefront of wavelength `lambda`. is incident on a slit of width a. The angular width of principal maximum is ______.

Light waves from two coherent sources arrive at two points on a screen with a path difference of zero and λ/2. The ratio of the intensities at the points is ______

If two waves represented by `"y"_1 = 3 "sin" omega "t"` and `"y"_2 = 5 "sin" (omega "t" + pi/3)` interfere at a point, then the amplitude of the resulting wave will be about ____________.

An organ pipe has a fundamental frequency of 120 Hz. Its fourth overtone is 600 Hz. Find the type of the pipe.

A transverse wave of amplitude 0.05 m and frequency 250 Hz is travelling along a stretched string with a speed of 100 m/s. What would be the displacement of a particle at a distance 1.1 m origin after 0.02 second?

`[sin pi/2=1, cos pi/2=0]`

The total energy of the body executing S.H.M. is E. The kinetic energy of the body, when the displacement is half of the amplitude is ______.

The velocities of a particle performing linear S.H.M are 0.13 m/s and 0.12 m/s, when it is at 0.12 m and 0.13 m from the mean position respectively. If the body starts from mean position, the equation of motion is ____________.

The sum of the absorptance, reflectance, and transmittance of a body is ______.

On the surface of the liquid in equilibrium, molecules of the liquid possess ____________.

A mercury drop of radius 'R' is divided into 27 droplets of same size. The radius 'r' of each droplet is ______.

A disc of mass 10 kg and radius 0.1 m/s rotating at 120 r.p.m. A retarding torque brings it to rest in 10s. If the same torque is due to force applied tangentially on the rim of the disc then magnitude of force is ______.

In the circuit below, A and B represent two inputs and C represents the output. The circuit represents ______. 

The equation of a plane progressive wave is y = 0.09sin8 `pi` `["t" - "x"/20]`.When it is reflected at a rigid support, its amplitude becomes `2/3`rd of its 3 previous value. The equation of the reflected wave is ______.

The wave of the wavelength 30 cm and frequency 100 Hz will be ______.

Two moles of an ideal diatomic gas occupies a volume V at 27° C. The gas expands adiabatically to a volume 2V. Calculate the final temperature of the gas is nearly ____________.

A satellite of mass 'm', revolving round the earth of radius 'r' has kinetic energy (E). Its angular momentum is ______.

Reason of weightlessness in a satellite is ____________.

The moment of the couple is independent of ______

The ratio of the angular speed of minute hand and hour hand of a watch is ____________.

Which among the following polymers is obtained first by formation of salt by neutralization and then by step growth polymerization?

Which among the following polymers can NOT be remoulded?

Which among the following polymers is a copolymer?

Identify the side chain –R present in amino acid lysine.

The side chain R in cysteine is ____________.

On hydrolysis sucrose gives ____________.

Aniline on reaction with Bromine water at room temperature gives ____________.

Benzenediazonium chloride on reaction with 'X' gives benzene. Identify X.

Which of the following is obtained on alkaline hydrolysis of 1,1-dichlorocyclohexane?

When ethyl methyl ether is treated with cold concentrated HI, it gives two products. Products formed are ____________.

1-Methoxypropane is a metamer of ____________.

Methoxy ethane on reaction with hot concentrated HI gives ____________.

The most suitable reagent(s) required to prepare 1-iodobutane from but-1-ene is/are ____________.

Identify the name of reaction in which alkyl fluorides are prepared by heating alkyl bromide with metallic fluorides.

How many asymmetric carbon atoms are present in neopentyl chloride?

Identify the increasing order of effective magnetic moment of the following elements in their +2 oxidation state.

[Fe (Z = 26), Co (Z = 27), Ni (Z = 28), Cu (Z = 29)]

Chlorophyll and haemoglobin are complexes of ____________ respectively.

The transition metal(s) present in limonite is(are) ____________.

The number of moles of chlorine required to oxidise 2 mol of iodine to iodate in presence of water is ____________.

The sulfuric acid obtained by contact process is ____________ % pure.

The NICAD cell provides a potential of __________.

A system is changed from an initial state to a final state by a manner such that ∆H = Q. If the change from initial state to final state was made by a different path, then ____________.

The unit of Henry's law constant is ____________.

What type of solution is obtained when benzoic acid is added in Benzene?

The total volume occupied by particles m simple cubic unit cell is ____________.

Optical isomerism is exhibited by ____________.

171 g of sucrose on hydrolysis gives ____________ mole(s) of glucose.

(Atomic wt: C = 12, H = 1, O = 16)

At what temperature the volume of a gas becomes absolutely zero?

Which of the following is INCORRECT for alkali metals?

The below given molecular geometry corresponds to which of the following molecule?

The total energy of an electron in an atom in an orbit is -3.4 eV. Its kinetic and potential energies are, respectively ______.

'The Evil Quartet' is a concept which describes the ______.

Identify the plant species which is present in most number.

Maximum species richness is observed in the ______.

Which of the following is included in species diversity?

Which stage precedes the forest stage during succession in aquatic environments?

______ is the gradual and predictable change in the species composition of a given area.

What is the entire sequence of communities that successively change in a given area called?

The correct description for the interspecific interaction shown in the given figure is ______

Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.

Calculate the birth rate if a population of 150 Paramoecium present in a pool increases to 450 after an hour.

Which phase of the Logistic growth curve shows that the population density has reached the canying capacity in a habitat with limited resources?

Read the following statements and select the correct option.

Statement I: Some snails and fish undergo hibernation to avoid summer heat.

Statement II: Polar bears undergo hibernation in winters as they are unable to migrate

Biopharmaceuticals are proteins, hormones, antibodies, vaccines, or enzymes isolated from ______.

Which of the following is/are the CORRECT step/s involved in construction of a recombinant DNA?

Which of the following is NOT involved in genetic engineering technique?

i. Combining genes from two organisms

ii. Gene cloning

iii. Transfer of lipid molecules

iv. Transfer of genes to new organisms

v. Repairing or replacing the defective genes by healthy genes

vi. Artificial synthesis of new gene

From the following identify the methods of electrophoresis.

Which of the following is TRUE regarding EcoR I?

What happens during the course of sewage decomposition?

Due to which of the following reason/s sewage water cannot be discharged directly into river?

Which of the following is/are the microbial source(s) for the enzyme pectinase?

Identify labels P, Q, R in the given figure of root showing different regions. 

Which of the following set of medications is generally prescribed for malaria?

Which antigen would be present on the RBC surface of a person with A blood?

Identify the factors involved in innate immunity and choose the correct option.

i. Antibodies

ii. Skin

iii. Tears

iv. Neutrophils

v. T-lymphocytes

vi. Macrophages

vii. lgG

viii. Saliva

Due to which property of acquired immune system does a second encounter of the same pathogen brings about a stronger and quicker immune response?

Toxins released by bacteria like tetanus toxin undergo______.

Which cells are play a major role in non-specific defence against viral infections and tumors?

Identify the correct function of the hormone ACTH.

Which hormone is secreted in response to increasing blood calcium levels?

Which of the following statements is TRUE for Cushing's disease?

Which diseases is caused by the hypersecretion of mineralocorticoids and glucocorticoids?

______ is also known as the milk ejecting hormone.

What is the outcome of hypersecretion of GH in childhood?

Which of the following blood vessels carry oxygenated blood from lungs to heart?

Identify the CORRECT route through which impulse travels in the heart.

______ externally separates ventricles from each other.

By which of the following mitral valve and tricuspid valve are attached to the papillary muscles?

______ is a loose-fitting membrane that encloses the heart and consists of a superficial fibrous layer and a deep serous layer.

Which of the following health condition refers to the type of blood cancer in which uncontrolled increase in number of WBCs occurs?

By which of the following emphysema is characterized?

Which part(s) of plant is/are responsible for synthesis of gibberellins?

Which of the following is the physiological role of auxins?

Coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps.

What is the significance of the above experiment performed by Dr. F. Went?

Which of the following is a NOT a naturally occurring phytohormone?

Plants absorb water from the ______.

Which of the following term correctly describes the microenvironment surrounding the root from which plants absorb water?

______ refers to the water that percolates deep in the soil due to the gravity.

Epiphytic plants like orchids absorb water vapours from air with the help of epiphytic roots having special tissue called ____________.

The cell wall is freely permeable, but the plasma membrane is ______.

Identify the heavily built, short prehistoric man having cranial capacity of about 1400 cc who is known to bury the dead.

Homo erectus probably existed during ____________.

All are features of Homo habilis, EXCEPT ______

The movement of genes into or out of a population is known as ______.

Which is TRUE for industrial melanism?

Using a DNA template, synthesis of a new strand is carried out by which of the following enzyme?

Protein synthesis and cell division is accelerated by the hormone ______.

Which of tbe following is generally used for creating density gradient during centrifugation?

______ heavy isotope was used by Meselson and Stahl during their experiment.

The additional set of proteins required for packaging of chromatin at higher level are called ______.

Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).

Read the following statements and select the correct option.

i. If sperm containing Y chromosome fertilizes the ovum, then diploid zygote is formed that grows into a male child.

ii. If sperm containing X chromosome fertilizes ovum, then diploid zygote is formed, that grows into a female child.

What would be the progeny obtained if a haemophilic male marries a female with normal blood clotting?

Inheritance of hypertrichosis occurs directly from ____________.

AIDS is ______.

What is the function of macrophages in immune defense?

From which germinal layer are eyes derived?

First meiotic division is observed in ____________.

Identify the proper order of spermatogenesis and choose the correct option.

Which of the following correctly describes the rete testis?

Identify the term that correctly describes the transfer of pollen grains through wind.

______ are abiotic agents of pollination.

Which of the following is important for self-pollination?

During which of the following steps does extrusion of second polar body from egg nucleus occur?

Identify the function/s of integuments.

In which of the following manner the arrangement of megaspores in a tetrad is observed in angiosperms?

If a person is sweating and does not drink enough water, the concentration of urine is likely to be ____________ mOsm/L.

Glucose is reabsorbed from the glomerular filtrate mainly in the ____________.

The capillaries of the glomerulus reunite to form _______ which leaves the Bowman's capsule.

In order to carry out excretion, the liver of birds synthesize ____________.

Osmoregulation maintains the osmolarity of blood at about ______.

Match the enzymes of Column-l with the functions of Column-II. Choose the correct option.

	Column-l		Column-II
i.	Enterokinase	a.	Absent in adults
ii.	Rennin	b.	Digests carbohydrates
iii.	Pancreatic Amylase	c.	Converts trypsinogen to trypsin
iv.	Lipase	d.	Hydrolyze fat molecules into fatty acids monoglycerides

Identify the enzyme responsible for conversion of starch to maltose.

Number of teeth present in each jaw is ______.

Identify the INCORRECT statement.

Appendix is a vestigial organ in humans and functional in herbivorous animals for the digestion of ____________.

______ is used for conversion of 3-PGA to 2-PGA in glycolysis.

Glycolysis is the source of energy production in ______.

______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.

Where does the oxidative phosphorylation occur?

Maltose - X + Y, Identify X and Y in the presence of the enzyme maltase.

In which of the following RNA is genetic material?

Identify the option that correctly describes the amphoteric nature of proteins.

____________ are esters of saturated fatty acids with long chain alcohols and ketones.

Chemically all living organisms have three basic types of macromolecules, which are polymers of simple subunits called ____________.