Some MCQs for Practice

1. Protista is the connecting link between which groups?
a. Monera and Fungi
b. Monera and Animals
c. Monera and plants
d. Monera and virus

Ans: b

2. Which group is known as 'Jewels of Plant Kingdom'?
a. Chrysophytes
b. Fungi
c. Protists
d. Euglenoids

Ans: a

3. Which group has got lipids capable of storing light?
a. Protists
b. Sporozoans
c. Euglenoids
d. Diatoms

Ans: d

4. Which among the following indicates pertroleum presence?
a. dinoflagellates
b. Chrysophytes
c. Slime moulds
d. Protozoans

Ans: b

5. the protein covering in virus is known as?
a. capsomere
b. capsid
c. peplomere
d. peplid

Ans: b

6. Which of the folowing has double stranded DNA?
a. Adenovorus
b. Cauliflower M.V.
c. Simian virus
d. all the above

Ans: d

7. Φx174 has which type of genetic material?
a. ss-RNA
b. ss-DNA
c. ds-RNA
d. ds-DNA

Ans: b

8. Which among the following is the character of retrovirus?
a. positively stranded ds-DNA
b. positively stranded ss-RNA
c. negatively stranded ds-DNA
d. negatively stranded ss-DNA

Ans: b

9. Which among the following has a helical symmetry?
a. Turnip Mosaic Virus
b. Potato Mosaic Virus
c. Tobacco Mosaic virus
d. Bacteriophage

10. The red pigment that represents the eyespot in Euglenoids is made of________
a. Astaxanthin
b. Protoxanthin
c. Xanthophyll
d. Chorophyll

Ans: a

11. Euglna stores carbohydrates in the form of______________?
a. Amylopectin
b. Paramylum bodies
c. Paramylon
d. both (b) and (c)

Ans:d

12. 'Palmella stage' is present in which of the following?
a. Algae
b. Euglena
c. All of the above
d. None of the above

Ans: c

13. Which group is known as the 'consumer-decomposer' protists?
a. Slime moulds
b. Euglenoids
c. Amoeboids
d. Sporozoans

Ans: a

14. The plasmodium of a slime mould secretes_______
a. lime
b. tanin
c. resin
d. silica

Ans: a

15. Macrocyst formation represents:
a. Asexual reproduction
b. Sexual reproduction
c. Vegetative reproduction
d. None of the above

Ans: b

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GK for AIIMS- 3

This is my third release notes regarding the preparations you should undertake in order to clear the A.I.I.M.S.
Here I am featuring some questions regarding Scientists. Many of these were asked in the previous years papers.

*A petrol fire cannot be extinguished by throwing water on it because the heat of the petrol fire is so intense that the water thrown on it gets evaporated and decomposes quickly or since the density of water is more than the density of petrol, water sinks below the petrol when it is poured over a petrol fire.


*An iron nail floats on mercury but sinks in water because the specific density of iron is lower than that of mercury and higher than that of water.


*Ice floats on water but sinks in alcohol, because the specific density of ice is less than that of water and more than that of alcohol.


*As we go up in the atmosphere, the temperature and pressure decreases.


*If the pressure shown by a barometer rises, it indicates fair weather.


*The density of sea water is higher than the density of river water. Therefore it is easier to swim in the sea than in river. This is why a ship entering from river mouth to sea rises up a little.


*Mercury is used as the liquid in thermometers as it does not wet glass.


*Laws of gravitation and the laws of motion were discovered by Sir Isaac Newton, the author of 'Principia of Mathematica'.


*Inertia is the property or tendency of a body to resist any change in its rest or of uniform motion in a straight line. The word inertia was given by Galileo. The more inertia a body has, the greater is its mass.


*Quantum theory was presented by Max Planck for which he was awarded the Nobel Prize in 1918.


*Escape velocity is the minimum speed which a spacecraft must have to escape Earth's gravitational force. It is 7 miles/s. (11.2 km/s).


*The law of conservation of energy states that energy can neither be created nor be destroyed. It can only be changed from one form to another but the total amount of energy remains constant. This theory was formulated by Albert Einstein.


*A dew drop is spherical because a sphere has a minimum surface area and a dew drop tries to attain this surface area for its equilibrium.


*Raindrops are spherical due to surface tension.


*Anything that occupies space and possesses weight is called matter.


*The force of attraction between like molecules is called cohesion and the force of attraction between unlike molecules is called adhesion.


*Weight can be defined as the force with which the earth attracts a body. Mass remains constant while weight varies.

*Density is mass per unit volume of a substance.


*Friction is a force that resists the movement of one surface over another.


*'Tribology' is concerned with studying interacting surfaces in relative motion.


*Elasticity is the ability of a body to return to its original shape and size on the removal of the deforming force.


*Glass is more elastic than steel and steel is more elastic than rubber.


*The oil in the wick of an oil lamp rises due to capillary action.


*Solids retain their shape due to cohesion.


*Strain is proportional to the stress producing it and the ratio is constant for any given material. This is known as Hooke's law.


*Archimedes's principle (Principle of Buoyancy) states that the upward force acting on an object immersed in a fluid is equal to the weight of the fluid that is displaced by the body.


*The theory behind the lever and pulleys was first demonstrated by Archimedes.


*The hydraulic press and hydraulic breaking is based on Pascal's law which states that the pressure applied to an enclosed liquid is transmitted equally to all parts, whatever be the shape of the container.

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GK for AIIMS- 2

This is my second release notes regarding the preparations you should undertake in order to clear the A.I.I.M.S.
Here I am featuring some questions regarding Scientists. Many of these were asked in the previous years papers.







Guttenberg invented the art of printing. The modern printing press was invented by Caxton.


Laws of electrical resistance was discovered by G.S. Ohm.


The microphone was invented by Alexander Graham Bell (1876).

Thomas Alva Edison is known as the wizard of Menlo Park. He is credited with greatest number of inventions.

Nuclear model of the atom was discovered by Rutherford.

Miner's safely lamp was invented by Sir Humphry Davy. He also discovered laughing gas (nitrogens oxide).


John Logie Baird of Scotland invented television in 1926.


Sir Issac Pitman of Britian invented shorthand in 1837.


Samuel Colt of USA invented revolver in 1835.


E.G. Otis of USA invented lift in 1852.


The Swedish Scientist and the founder of Nobel Prize Alfred Nobel invented dynamite gunpowder 1867.


Henri Becquerel discovered radio-activity.


Albert Einstein discovered law of photo electric effect and general theory of relativity.

Law of falling bodies was discovered by Galileo.


Dennis Papin invented pressure cooker in 1675.


James Harrison, in 1851, invented refrigerator.

A.L. Breguet of France invented watch in 1791.


E. Torricelli invented barometer.


Italian scientist C.A. Volta invented electric battery.


Wireless wave invented by G. Marconi (Italy) in 1895.


Robert H. Goddard (USA) invented Liquid Fuel Rocket in 1926.

American scientists John Bardeen, W. Brattain and W. Shockley invented transistor in 1948.

Electric washing machine was invented by an American company named Hurley Machine Company.



Inelastic scattering of light by molecules was discovered by C.V. Raman. It is known as Raman Effect. He won Nobel prize in 1930 for this discovery.


Meghnad Saha (India) developed a consistent theory of spectral sequence of the stars from the point of view of atomic theory. He became the member of Parliament in 1951.


A.P.J. Abdul Kalam is known as Missile Man of India.


E.C.G. Sudarshan invented the theory of tachyons.


The nuclear fission was discovered theory of tachyons.


The nuclear fission was discovered by Otto Hahn.


The fourth dimension in physics was introduced by Albert Einstein.


Edward Teller first developed the idea of hydrogen bomb.

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G.K for AIIMS: 1

This is a general knowledge pack specially prepared for competitive exams like A.I.I.M.S. In this I have given some basic GK regarding the Physics section. I am writing more.

A.I.I.M.S. has 20 GK questions out of which 10 are from Science. And out of this most are from Physics section.

PHYSICS

Echo is due to the reflection or reverberation of sound. For the production of echo there should be a minimum distance of 9 meters between us and the reflecting surface.

Bats can fly in the dark because they can generate ultrasonic sound and if there is any hindrance in their way the sound waves get reflected and they can change their direction. They use this method to catch insects also.

Since sound waves need a medium to travel they cannot be transmitted through vacuum

The audible frequency of human ear is between 20 and 20, 000 Hz.

A speed greater than the speed of sound is referred to as supersonic. Velocity of sound in the air is 330m/s. The velocity of sound increases when the density of the medium through which it passes increases.

Sound consists of waves of alternate compression and rarefaction that transmit kinetic energy through a medium.

The two other units used for measuring temperature are degree Celsius and Fahrenheit.

The SI unit of weight is newtons (N). Force is also measured in newtons.

The SI unit of energy and work is joule (J).

The SI unit of power is watt (W).

The SI unit of frequency is hertz (Hz).

The SI unit of loudness (sound) is decibel (db).

Calorie is a unit of heat.

The SI unit of electric charge is coulomb.

The SI unit of electric resistance is ohm (O).

The SI unit of potential difference (voltage) is volt (V).

Light year is a unit of distance used in astronomy. It is the distance light travels in one year at the speed of 3,00,000 km/s.

Astronomical unit is another unit of distance in space. It is the mean distance between earth and sun. One light year contains nearly 63282 astronomical units.

Par sec (Parallactic second) is yet another unit of distance in space. One par sec is equal to 3.08×1016m.

I have prepared this with utmost care. I don't think there are any errors in this. Hope this helps you. Best of Luck!

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Some Vital Statisctics:

Total students(approx.):
2005:50,500
2006:53,000
2007:45,200
2008:47,000
*the data is an average collected from various forums. It is an approximation and may vary slightly.

Toppers:
(1st rank)
2005:81%
2006:76.33%
2007:82.5%
2008:75.66%

(2nd rank)
2005: 76.66%
2006: 75.16%
2007: 82%

Cut-off percentage:
(Details of 2008 entrance not known)
General:
2005: 66.16
2006: 68
2007: 72.33

SC Cut off:
2005: 54
2006: 57.6
2007: 58.33

ST cut-off:
2005: 51
2006: 56.8
2007: 58.17

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F.A.Q. on Pattern of Paper

General:
Time allotted: 3hours 30 minutes.
No. of questions: 200
Pattern of questions:
Physics: 60
Chemistry: 60
Biology: 60
G.K.: 20
______________
Total: 200

Assertion Reason type questions:
Out of the 60 questions in PCB, only 20 questions from each are Assertion reason. Rest 40 are normal M.C.Q. with four options. Only one will be correct.

Notification of Exam : Released on January
Date of Exam : Usually June 1
Results : Usually end of June
Commencement of Classes: Beginning of August

Marking Scheme:
Correct answer : 1 mark
Wrong answer : -1/3 mark
Unanswered : 0 mark

Is there a prescribed syllabus?
No.
Generally questions from 10+2 topics are asked. But in some cases, questions can be even asked from graduate level. Being one of the most prestigious institution in India, competition is very high and there is no limit for preparation.

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10 Assorted questions on Porifera.

It is a well noted trend that a lot of questions appearing for competitive medical exams are heavily imbibed from very old NCERT textbooks as well as out-of-syllabus. This series of questions are prepared keeping in mind the extra portions and one-words that frequently come up for the A.I.P.M.T. Prelims, Kerala P.M.T., J.I.P.M.E.R. and also for the A.I.I.M.S. Examinations. I hope this helps you to get some additional useful information.

Self evaluation M.C.Q. Examination:
One question carries 4 marks if correct. If wrong the examinee is awarded -1 marks. There will be no marks for unattempted questions.

Maximum Marks:40
Pass Marks :20
Total time :10 minutes

1. Sponges are proifers because their bodies have:
a. Spicules in skeleton
b. several pores
c. canal system
d. all of these

Ans: b

2. Sycan belongs to the group which are best described as:
a. Unicellular and acellular
b. multicellular without any tissue
c. multicellular without any gastrovascular system
d. multicellular having tissue organisation but no body cavity

Ans: b

3. The phyllum name porifera was coined by_______
a. Robert Grant
b. Robert Koch
c. Robert Brown
d. Robert Frost

Ans: a

4. The study of porifers is called___________
a. Poriferology
b. Sycology
c. Hexactinellidology
d. Parazoology

Ans: d

5. The closest approach to true tissue in sponges are:
a. Ostracoderms
b. Porocytes
c. Pinacocytes
d. Collar cells

Ans: c

6. Sponges of skeleton are made of
a. silicious spicules
b. calcreous spicules
c. spongin fibres
d. all the above

Ans: d

7. Which is the chief nitrogenous waste in sponges?
a. Ammonia
b. Uric acid
c. Urea
d. T.M.A.O.

Ans: a

8. What is(are) the name(s) of the single exit for Sponges?
a. ostia
b. osculum
c. ostiophore
d. both a and b

Ans: b

9. What is the common relation between Porifera and Protozoa?
a. Single cell
b. Cell aggregate
c. Intra cellular Digestion
d. Extra cellular Digestion

Ans: c

10. Name the poriferan larvae.
a. Parenchymula
b. Amphiblastula
c. both (a) and (b)
d. none of the above

Ans: c

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