LATEST QUESTIONS FOR PHYSICAL SCIENCE FOR CSIR-JRF NET EXAM 2011

1. What is the name for motion without rotation? A: transitional motion B: translational motion C: non-rotational motion D: ambiguous motion 2. Name this formula: ΔV = βVΔT A: formula for change in velocity B: formula for defining vectors C: formula for change in valence D: formula for volume expansion of solids and liquids 3. What is the common name for the point at which the total force due to gravity can be said to be acting? A: center of motion B: gravitational resistance C: center of gravity D: center of resistance 4. What is resistivity? A: intrinsic resistance to current flow in a material B: intrinsic acceleration of current flow in a material C: intrinsic indifference to current flow in a material D: intrinsic amplification of current flow in a material 5. What is it called when waves are in phase and their amplitudes add together? A: occlusion B: constructive interference C: collusion D: destructive interference 6. What is another name for the ratio of an image’s height to the height of the object it represents? A: ramification B: magnification C: nullification D: resolution 7. In regard to a string, what is the fundamental frequency? A: the highest frequency the string can support B: the median frequency the string can support C: the best frequency the string can support D: the lowest frequency the string can support 8. What kind of oscillation occurs when particles move in the direction of the wave motion? A: latitudinal B: unusual C: longitudinal D: atypical 9. Which law states that the voltage drop across a resistor is proportional to the current carried? A: Mimm’s law B: Ohm’s law C: Planck’s law D: Heisenberg’s law 10. What is electrostatic force? A: static electricity B: the force that exists between stationary charges C: the force that exists between moving charges D: the force that exists when one charge is moving and the other is stationary Answer Key 1. B. Translational motion is any motion that does not include rotation. 2. D. The formula indicates that the change in volume will be equal to the volume multiplied by the change in time and the volume expansion coefficient. 3. C. The center of gravity is determined in order to simplify calculations. 4. A. The resistivity of a material is one of its most important characteristics. 5. B. Constructive interference results in combined wave amplitudes higher than any of the wave amplitudes by themselves. 6. B. Magnification is the ratio of the size of an image to the size of the object that it represents. 7. D. The fundamental frequency is the lowest frequency that can be sustained by a string. 8. C. In longitudinal motion, particles oscillate in the same direction that the wave is moving. 9. B. Ohm’s law asserts that the voltage drop across a resistor will be predictable. 10. B. An electrostatic force exists between any stationary charges. For additional information, we recommend you check out these free MCAT test resources: MCAT Exam Study Guide MCAT Exam Biological Science Questions MCAT Exam Physical Science Questions MCAT Exam Verbal Reasoning Questions MCAT Test Information MCAT Exam Practice Questions Practice Questions(nuclear physics) 1. What is the net static electric charge on a metal sphere having an excess of +3 elementary charges? A. 4.7 x 10 B. 8.4 x 10 C. 4.8 x 10 D. 8.7 x 1019 C 2. A hydrogen atom could have an electron energy level transition from n=2 to n=3 by absorbing a photon having an energy of? A. 1.89 eV B. 2.04 eV C. 2.25 eV D. 2.87 eV 3. Two solid metal blocks are placed in an insulated container. If there is a net flow of heat between the blocks, they must have different? A. Initial temperatures B. Specific Heat values C. Melting points D. Heats of fusion 4. A (P type) semiconductor is formed by adding impurities, which provide extra ____. A. Electrons B. Neutrons C. Photons D. Holes 5. A student measures a current of .05 ampere through a P type semiconductor. If the battery connections are reversed, the current through the semiconductor will be? A. Less than .05 ampere B. Greater than .05 ampere C. The same 6. What is the approximate bind energy of a helium nucleus that has a mass defect of 5.2 x 10-29 kilogram? A. 4.6 x 10 B. 4.6 x 10 C. 4.7 x 10 D. 4.7 x 10-18 7. Which particle cannot be accelerated by a cyclotron? A. Proton B. Neutron C. Electron D. Alpha particle 8. A 96 gram sample of a radioactive nuclide is placed in a container. After 12 minutes only 6 grams of the sample has not yet decayed. What is the half life of the nuclide? A. 3 minutes B. 4 minutes C. 5 minutes D. 6 minutes 9. The principal reason for using neutrons to bombard a nucleus is that neutrons? A. Have a relatively low atomic mass B. Can be easily accelerated C. Have a very high kinetic energy D. Are not repelled by the nucleus 10. What is the magnitude of the gravitational force between an electron and a proton separated by a distance of 1.0 x 10-10 meter? A. 1.0 x 10 B. 1.0 x 10 C. 2.0 x 10 D. 3.05 x 10-47 N 11. A sphere has a net excess charge of –4.8 x 10-19 coulomb. The sphere must have an excess of ______. A. 1 Electron B. 1 Proton C. 3 Electrons D. 3 Protons 12. An excited hydrogen atom returns to its ground state. A possible energy change for the atom is? A. Loss of 10.20 eV B. Gain of 10.20 eV C. Loss of 11.70 eV D. Gain of 11.70 eV 13. During a collision between a proton and an electron there is conservation of _____. A. Energy, only B. Momentum, only C. Energy and Momentum D. Neither Energy or Momentum 14. As the temperature of a surface increases, how does the rate of thermionic emission change? A. Electrons are emitted at a lower rate. B. Electrons are emitted at a higher rate. C. Protons are emitted at a lower rate. D. Protons are emitted at a higher rate. Answer Key 1. C 2. A 3. A 4. D 5. B 6. C 7. B 8. A 9. D 10. B 11. C 12. A 13. C 14. B  General science:1. When the chromosomes line up in mitosis this is known as which phase? A. Telophase B. Anaphase C. Metaphase D. Prophase 2. Which cellular organelle contains enzymes that are considered digestive? A. Golgi Apparatus B. Lysosomes C. Nucleus D. Ribosomes 3. Organs repair themselves through a process of? A. Meiosis B. Mitosis C. Cellular differentiation D. Transformation 4. Which of the following is considered a model for enzyme action? A. Lock and Key model B. Enzyme interaction model C. Transformation model D. Transcription model 5. Which of the following statements about enzymes is not true? A. Enzymes are catalysts. B. Almost all enzymes are proteins. C. Enzymes operate most efficiently at optimum pH. D. Enzymes are destroyed during chemical reactions. 6. Which of the following statements about prostaglandins is not true? A. Prostaglandins promote inflammation. B. Prostaglandins can only constrict blood vessels. C. Prostaglandins are made in the renal medulla. D. Prostaglandins can lead to pain and fever. 7. Cholesterol that is known as (LDL) stands for: A. Low-density lipoproteins B. Low-density lysosomes C. Level-density lipoproteins D. Level-density lysosomes 8. Hardening of the arteries is known as: A. Atheriosclerosis B. Venous narrowing C. Micro-circulation D. Hypertension 9. Litmus paper that is blue will turn/stay _____ in the presence of a strong base. A. Orange B. Red C. Blue D. Green 10. Breathing properly requires the presence of what compound that affects surface tension of alveoli in the lungs? A. Potassium B. Plasma C. Surfactant D. Sodium Chloride 11. Which of the following is not considered a function of the kidneys? A. Secretion B. Reabsorption C. Transport D. Filtration 12. The functional unit of the kidney is known as? A. Medulla B. Glomerulus C. Pyramid D. Nephron 13. Which of the following formulas indicate the ideal gas law? A. PV= knT or PV=RnT B. V=kT C. PV = k D. KTV =PR 14. Which of the following is not considered a characteristic or property of a gas? A. Volume B. Mass C. Pressure D. Particles 15. Which of the following is described in the definition: An object immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object? A. Archimedes' principle B. Charles' law C. Boyle's law D. Anderson's principle 16. Liquids that evaporate quickly are known as _____ liquids. A. Viscous B. Volatile C. Evaporative D. Transient 17. High frequency sound waves are known as: A. Fundamental waves B. Overtones C. Consonance waves D. Dissonance waves 18. What anatomical structure connects the stomach and the mouth? A. Trachea B. Spinal column C. Hepatic duct D. Esophagus Answer Key 1. C 2. B 3. B 4. A 5. D 6. B 7. A 8. A 9. C 10. C 11. C 12. D 13. A 14. D 15. A 16. B 17. B 18. D  Practice Questions 1. The movement of food through the intestines is known as: A. Peristalsis B. Ileum translation C. Microvilli propulsion D. Flexure propulsion 2. The enzyme maltase does the following: A. Breaks down lactose to glucose B. Turns glucose into maltose C. Breaks down maltose to glucose D. Turns glucose into lactose 3. High levels of bilirubin in the blood stream can result in: A. Uric acid overexposure B. Jaundice C. Bile salt production D. Hepatic mutation 4. The symbol B on the periodic table stands for: A. Beryllium B. Boron C. Barium D. Berkelium 5. The symbol Mn on the periodic table stands for: A. Magnesium B. Molybdenum C. Manganese D. Margon 6. The symbol Ca on the periodic table stands for: A. Calcium B. Carbon C. Cobalt D. Chlorine 7. The symbol Br on the periodic table stands for: A. Beryllium B. Boron C. Barium D. Bromine 8. Vinegar is also known as: A. Acetic acid B. Acetone acid C. Sulfuric acid D. Ascorbic acid 9. A Lewis acid is a/an ____ pair acceptor. A. Neutron B. Proton C. Electron D. Ion 10. _____ reactions produce heat. A. Endothermic B. Exothermic C. Hydrogen D. Buffered 11. Which of the following match the definition: The pressure (P) is inversely proportional to the volume (V) of a gas. A. Archimedes' principle B. Charles' law C. Boyle's law D. Anderson's principle 12. The combination of sodium and chlorine to form NaCL is considered a/an ___ bond. A. Ionic B. Covalent C. Hydrogen D. Metallic 13. Outer shell electrons are known as ______ electrons. A. Hybrid B. Valence C. Vector D. Transitional 14. Forces can be indicated on graph paper by the use of _____. A. Empirical rules B. Interaction coefficients C. Variables D. Vectors 15. P1V1 = P2V2 represents: A. Archimedes' principle B. Charles' law C. Boyle's law D. Anderson's principle 16. Which of the following is not considered a primary color of light? A. Green B. Blue C. Red D. Yellow 17. The unit of charge is called the _____. A. Newton B. Coulomb C. Joule D. Watt 18. A/An ______ is a device specifically designed to measure current. A. Ammeter B. Cyclotron C. Resistor D. Capacitor 19. The two bones found in the area between the knee and ankle in humans are known as: A. Femur and Tibia B. Fibula and Tibia C. Ulna and Tibia D. Radius and Tibia 20. _____ is the current flow of one coulomb per second. A. Ampere B. Joule C. Watt D. Kilowatt Answer Key 1. A 2. C 3. B 4. B 5. C 6. A 7. D 8. A 9. C 10. B 11. C 12. A 13. B 14. D 15. C 16. D 17. B 18. A 19. B 20. A  Practice Questions 1. Which of the following is considered a component of lipids? A. Plasma cells B. Fatty acids C. Nucleic acids D. Zinc 2. Down's syndrome affects chromosome ____. A. 13 B. 15 C. 21 D. 23 3. Blood enters the lungs from which chamber of the heart? A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle 4. Excessive consumption of alcohol is most likely to damage which organ of the body over a long period of time? A. Kidney B. Liver C. Pancreas D. Gallbladder 5. Which of the following is not considered a type of radiation ray? A. Gamma B. Beta C. Alpha D. Infrared 6. A molecule of hemoglobin can hold how many molecules of oxygen in the blood for transport? A. 2 B. 4 C. 6 D. 8 7. Which of the following best describes the biomechanics of breathing? A. Pump handle motion B. Lever action C. Inspiration D. Expiration 8. Animals that eat meat almost exclusively are known as: A. Herbivores B. Carnivores C. Arthropods D. Prolific organisms 9. The physical expressions of a gene are known as an organism's: A. Transcription B. Genotype C. Phenotype D. Translation 10. A ball is traveling at a constant velocity of 50 m/s and has been traveling for over 2 minutes. What is the ball's acceleration? A. 0 B. 25 m/s C. 25 m/s D. 50 m/s2 11. Neurons connect together at a ______. A. Synergy B. Terminal site C. Docking station D. Synapse 12. Which of the following is another word for the kneecap in the human body? A. Pisiform B. Meniscus C. Popliteal bursa D. Patella 13. Which of the following describes the shoulder joint A. Ball and socket joint B. Saddle joint C. Hinge joint D. Pivot joint 14. The organ of Corti is found in what area of the body? A. Mouth B. Ear C. Nose D. Lungs 15. The condition of rickets is associated with a deficiency in which vitamin? A. A B. C C. D D. Z 16. A steroid is considered a ______. A. Lipid B. Protein C. Enzyme D. Weak acid 17. The X cranial nerve is the ____ nerve. A. Abducens B. Hypoglossal C. Facial D. Vagus 18. Which of the following pH ranges is a strong base? A. 1.3-2.0 B. 4.5-5.2 C. 7.1-9.0 D. 11.2-12.0 19. Which chamber of the heart pumps blood to the systemic circulation? A. Left Atrium B. Right Atrium C. Left Ventricle D. Right Ventricle 20. Which of the following formulas indicates Newton's second law of motion? A. F = ma B. F = mva C. v = d/t D. p = mv Answer Key 1. B 2. C 3. C 4. B 5. D 6. B 7. A 8. B 9. C 10. A 11. D 12. D 13. A 14. B 15. C 16. A 17. D 18. D 19. C 20. A  1. Which element is found in potassium chlorate and zinc nitrate? A. Hydrogen B. Oxygen C. Potassium D. Zinc 2. Atoms of which element have the weakest attraction for electrons? A. Na B. P C. Si D. S 3. Which element is classified as a metalloid? A. Sulfur B. Silicon C. Barium D. Bromine 4. Which metal is most likely obtained by the electrolysis of its fused salt? A. Au B. Ag C. Li D. Zn 5. Because of its high reactivity, which element is never found free in nature? A. O B. F C. N D. Ne 6. Iron corrodes more easily than aluminum and zinc because aluminum and zinc both A. Are reduced B. Are oxidizing agents C. Form oxides that are self-protective D. Form oxides that are very reactive 7. Which substance is produced by the Haber process? A. Aluminum B. Ammonium C. Nitric acid D. Sulfuric acid 8. What is the total number of moles of hydrogen atoms contained in one mole of (NH4)2C2O2? A. 6 B. 2 C. 8 D. 8 E. 4 9. The observed regularities in the properties of elements are periodic functions of their A. Atomic numbers B. Mass numbers C. Oxidation states D. Nonvalence electrons 10. Which physical characteristic of a solution may indicate the presence of a transition element? A. Its density B. Its color C. Its effect on litmus D. Its effect on phenolphthalein 11. Which element has a crystalline lattice composed of positive ions through which electrons flow freely? A. Bromine B. Calcium C. Carbon D. Sulfur 12. Red litmus paper will turn blue when placed in an aqueous solution of A. KCl B. KOH C. CH D. CH3COOH 13. Equilibrium is attained in a chemical cell when cell voltage is equal to A. +1.00 V B. +2.00 V C. 0.00 V D. -1.00 V Answer Key 1. B 2. A 3. B 4. C 5. B 6. C 7. B 8. C 9. A 10. B 11. B 12. B 13. C  Practice Questions 1. An atom with the electron configuration 1s22s22p63s23p63d54s2 has an incomplete A. 2p sublevel B. Second principal energy level C. Third principal energy level D. 4s sublevel 2. What is the total number of electrons in a completely filled fourth principal level? A. 8 B. 10 C. 16 D. 32 3. The characteristic bright line spectrum of an element is produced when its electrons A. Form a covalent bond B. Form an ionic bond C. Move to a higher energy state D. Move to a lower energy state 4. Which emanation has no mass and no charge? A. Alpha B. Beta C. Gamma D. Neutron 5. In which system do molecule-ion attractions exist? A. NaCl(aq) B. NaCl(s) C. C6H12O6(aq) D. C6H12O6(s) 6. A particle accelerator can increase the kinetic energy of A. An alpha particle and a beta particle B. An alpha particle and a neutron C. A gamma ray and a beta particle D. A neutron and a gamma ray 7. What is the total number of electrons needed to completely fill all of the orbitals in an atom's second principal energy level? A. 16 B. 2 C. 8 D. 4 8. An atom in an excited state can have an electron configuration of A. 1s22s2 B. 1s22p1 C. 1s22p2 D. 1s22s22p5 E. 1s22s22p6 9. Compared to the charge and mass of a proton an electron has A. The same charge and smaller mass B. The same charge and the same mass C. The opposite charge and smaller mass D. The opposite charge and the same mass 10. What is the total number of sublevels in the fourth principal energy level? A. 1 B. 2 C. 3 D. 4 11. Which atom in the ground state has only one unpaired electron in its valence shell? A. Aluminum B. Silicon C. Phosphorus D. Sulfur 12. The shape and bonding of a diatomic bromine molecule are best described as A. Symmetrical and polar B. Symmetrical and nonpolar C. Asymmetrical and polar D. Asymmetrical and nonpolar 13. What is the oxidation number of sulfur in H2SO4? A. 0 B. -2 C. +6 D. +4 14. When alpha particles are used to bombard gold foil, most of the alpha particles pass through undeflected. This result indicates that most of the volume of gold atom consists of A. Neutrons B. Protons C. Deuterons D. Unoccupied space 15. When an alpha particle is emitted by an atom, the atomic number of the atom will A. Decrease by 2 B. Increase by 2 C. Decrease by 4 D. Increase by 4 16. Which of the following element has the corresponding valence subshell of 3p4? Atomic numbers are listed next to the elements. A. Aluminum 13 B. Silicon 14 C. Sulfur 16 D. Chlorine 17 17. Which of the following element has the corresponding valence subshell of 3p6? Atomic numbers are listed next to the elements. A. Sulfur 16 B. Chlorine 17 C. Argon 18 D. Potassium 19 18. Which of the following element has the corresponding valence subshell of 3s1? Atomic numbers are listed next to the elements. A. Neon 10 B. Sodium 11 C. Magnesium 12 D. Aluminum 13 19. Which of the following element has the corresponding valence subshell of 2p4? Atomic numbers are listed next to the elements. A. Nitrogen 7 B. Oxygen 8 C. Neon 10 D. Magnesium 12 20. What is the maximum number of electrons that can be found in the orbital denoted by the letter f? A. 10 B. 14 C. 16 D. 18 Answer Key 1. C 2. D 3. D 4. C 5. A 6. A 7. C 8. B 9. C 10. D 11. A 12. B 13. C 14. D 15. A 16. C 17. C 18. B 19. B 20. B  xam Biological Sciences Practice Questions 1. Which of the following does not help to make up the cytoskeleton? A: microfilaments B: microtubules C: intermediate fibers D: ribosomes 2. What is the name for an enzyme secreted in an inactive form? A: cryogen B: cytogen C: zymogen D: zytogen 3. What is the name of the process whereby prokaryotes divide? A: binary fission B: binary fusion C: binary collision D: binary occlusion 4. What is it called when a single zygote divides into 2 embryos, resulting in identical twins? A: heterozygotic twins B: monozygotic twins C: polyzygotic twins D: homozygotic twins 5. What is the name for the rhythmic movements of the involuntary muscles that move food through the body? A: catharsis B: peritonitis C: peristalsis D: sepsis 6. What is the name of the enzyme produced in the pancreas that hydrolyzes specific peptide bonds and converts chymotrypsinogen to chymotrypsin? A: chymosin B: tryptophan C: trymsin D: trypsin 7. What is the name of the vein that transports glucose and other sugars that are absorbed in digestion to the liver? A: renal vein B: hepatic occludal vein C: carotid vein D: hepatic portal vein 8. What is a heterozygous organism? A: an organism that carries one allele B: an organism that carries two different alleles C: an organism that carries no alleles D: an organism that carries two identical alleles 9. What is the name for the existence of more than one phenotypic forms in a population? A: polymorphism B: heteromorphism C: homomorphism D: monomorphism 10. What is another name for the evolution of a new species? A: individuation B: devolution C: mass production D: speciation Answer Key 1. D. Ribosomes are part of a cell. 2. C. It is important to know the names of all the major types of enzymes. 3. A. Fission means to break apart. 4. B. Monozygotic literally means 'one zygote.' 5. C. There are a number of disorders that can disrupt the process of peristalsis. 6. D. It is important to know the names of all the major enzymes. 7. D. It is important to know the names of all the major veins. 8. B. A heterozygous organism carries multiple different alleles. 9. A. The word polymorphism literally means 'many forms.' 10. D. The word species is contained within speciation.