Q1. Consider the following statements:

• 1. Glass wool has greater tensile strength than steel.
• 2. Glass wool is fire proof.
• 3. Glass wool has high electrical conductivity and absorbs moisture.
• 4. Glass wool is used to prepare fibre glass.

Which of the statements given above are correct?

• (a) 3 and 4
• (b) 1, 2 and 3
• (c) 1, 2 and 4
• (d) All of these

Q2. Consider the following statements:

• 1. The focal length of the objective of a microscope is less than the focal length of the eyepiece.
• 2. The minimum distance between an object and its real image formed by a convex lens of focal length f, is equal to 24C.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q3. Consider the following statements:

• 1. Branch of Science that deals with the improvement of human race by providing better environmental conditions, is called Euthenics.
• 2. Study of typical behaviour of organisms in their natural habitats, is called Ethology.
• 3. Branch of Science which deals with the study of various aspects of different races of mankind, is called Ethnology.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q4. Which of the following statements are valid for a solution containing a non-volatile solute?

• 1. The solution exhibits a lower vapour pressure than that of the pure solvent.
• 2. The solution exhibits a higher vapour pressure than that of the solvent.
• 3. The freezing point of the solution is less than that of the solvent.
• 4. The freezing point of the solution is more than that of the solvent.

Select the correct answer using the codes given below.

• (a) 1 and 4
• (b) 1 and 3
• (c) 2 and 3
• (d) 2 and 4

Q5. Consider the following statements:

• 1. Compass system is an independent global satellite navigation system of China.
• 2. Compass system is not an extension to the previously deployed Bei Dou-1, a new Global Navigation Satellite System (GNSS).
• 3. The new system will be a constellation of 35 satellites.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q6. Consider the following statements:

• 1. In a charged capacitor, energy is stored in the electric field between the plates.
• 2. The dielectric constant of metals is infinite.
• 3. The field intensity on the surface of a charged conductor is directed normally to the surface.
• 4. Kirchhoff's voltage law is based on the law of conservation of energy.

Which of the statements given above are correct?

• (a) 1, 2 and 3
• (b) 2, 3 and 4
• (c) 1, 3 and 4
• (d) All of these

Q7. Consider the following statements:

• 1. Meiosis takes place in pollen mother cells.
• 2. Each pollen mother cell produces four haploid pollen grains.

Which of the statements given above is/are correct?

• (a) Both 1 and 2
• (b) Only 1
• (c) Only 2
• (d) None of these

Q8. Consider the following statements:

• 1. H₂O exists in liquid state whereas H₂S in gaseous state because hydrogen bond exists in water and does not exist in H₂S.
• 2. The dipole moment helps to predict whether a molecule is polar or non-polar.
• 3. Alcohol is a polar solvent.
• 4. Ionic compounds are insoluble in non-polar solvent.

Which of the statements given above are correct?

• (a) 2 and 3
• (b) 1, 2 and 3
• (c) 1 and 2
• (d) All of these

Q9. Consider the following statements:

• 1. The velocity at which the observer approach a stationary sound source so that the apparent frequency of sound should appear double the actual frequency, is v (v is velocity of sound).
• 2. Change in frequency due to Doppler's effect, is produced when there is a relative motion between the source and the observer.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q10. Consider the following statements:

• 1. In mitochondria, succinate dehydrogenase is located in outer membrane.
• 2. Mitochondria have their own separate protein synthesising machinery independent of nuclear control.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) Neither 1 nor 2

Q11. Consider the following statements about MAVEN:

• 1. It stands for Mars Atmosphere and Volatile Evolution Mission.
• 2. It will provide first of its kind measurements and address key questions about Mars.
• 3. It is a project of European Space Agency.

Which of the statements given above is/are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) Only 2
• (d) All of these

Q12. Consider the following statements:

• 1. The maximum static frictional force is equal to the area of surface in contact.
• 2. The maximum static frictional force is independent of the area of surface in contact.
• 3. The limiting friction is always greater than the dynamic friction.
• 4. The coefficient of friction between two surfaces increases as the surface in contact are made rough.

Which of the statements given above is/are not correct?

• (a) 1 and 2
• (b) Only 1
• (c) 2, 3 and 4
• (d) 3 and 4

Q13. Consider the following statements:

• 1. JJ Thomson was the first one to propose a model for the structure of an atom.
• 2. Rutherford designed an experiment for the arrangement of electrons within an atom. In this experiment, fast moving alpha particles were made to fall on a thin gold foil.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q14. Which is not correct from the point of Magnetic Resonance Imaging (MRI)?

• (a) It is a medical imaging technique used in radiology to visualise internal structures of the body.
• (b) MRI makes use of the property of Nuclear Magnetic Resonance (NMR) to image nuclei of atoms inside the body.
• (c) In MRI, magnetic field is used to align the magnetisation of some atomic nuclei in the body.
• (d) By doing MRI, blockage in arteries can also be found.

Q15. Consider the following statements:

• 1. Liquid state is intermediate between solid state and gaseous state regarding interparticle force of attraction, packing of particles, etc.
• 2. Evaporation increases with increase in surface area, increase in temperature and decrease in intermolecular attractive forces.
• 3. Boiling point of a liquid increases with increase in external pressure.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) 1, 2 and 3

Q16. Haemophilia is a genetic disorder which lead to:

• 1. decrease in haemoglobin level.
• 2. rheumatic heart disease.
• 3. decrease in WBC.
• 4. non-clotting of blood.

Which of the statements given above is/are correct for haemophilia?

• (a) 1 and 2
• (b) 2 and 3
• (c) 3 and 4
• (d) Only 4

Q17. Consider the following statements:

• 1. Gaseous substances whose critical temperatures are above room temperatures, can be liquefied by applying sufficient pressure to the gas.
• 2. Gaseous substances whose critical temperatures are below room temperature, can be liquefied by the application of pressure and lowering of temperature below Tc.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q18. Consider the following statements about recombinant DNA technology:

• 1. Recombinant DNA is DNA that has been created artificially.
• 2. In this, DNA from two or more sources are incorporated into a single recombinant molecule.
• 3. Hepatitis B infection is controlled through the use of a recombinant Hepatitis B vaccine.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q19. Consider the following statements:

• 1. The quality of a musical note depends upon its harmonic content.
• 2. A wave undergoes reflection from a rigid boundary. One of its characteristic parameters that changes, is phase.
• 3. Stationary waves are so called because in them there is no flow of energy.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 3 and 1
• (d) 1, 2 and 3

Q20. Mosquito:

• 1. Culex causes filaria.
• 2. Aedes causes dengue, chikungunya, yellow fever.
• 3. Anopheles causes malaria.

Which of the statements given above are correct about mosquito?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q21. Consider the following statements:

• 1. Density of water is maximum at 277 K.
• 2. Density of water increases from 273 to 277 K and beyond this, decreases as expansion predominates.
• 3. Due to extensive hydrogen bonding, water has a very high heat capacity.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of the above

Q22. Consider the following statements:

• 1. According to de-Broglie hypothesis, particles have wave-like characteristics.
• 2. When an electron and proton have the same de-Broglie wavelength, they will have equal momentum.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q23. Consider the following statements:

• 1. Hepatitis-B causes several times more infections than HIV/AIDS.
• 2. Hepatitis-B can cause liver cancer.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q24. Consider the following statements:

• 1. Genetically Modified Organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques.
• 2. GMOs are used in biological and medical research, production of pharmaceutical drugs etc.
• 3. Plants including algae, jatropha, maize etc., have been genetically modified for the use in producing fuel, known as bio-fuel.

Which of the statements given above is/are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) Only 3
• (d) All of these

Q25. A closed bottle containing water at room temperature is taken to the moon and then the lid is opened. The water will:

• (a) boil
• (b) freeze
• (c) decompose into hydrogen and oxygen
• (d) not change at all

Q26. Consider the following statements:

• 1. Sea weeds are important sources of I₂.
• 2. Bleaching powder is obtained by the interaction of Cl₂ and dry slaked lime.
• 3. Chlorine is mixed in water so that bacterias are killed.
• 4. Hydrofluoric acid is not preserved in glass bottle because it reacts with silica of glass.

Which of the statements given above are correct?

• (a) 1, 2 and 3
• (b) 1 and 2
• (c) 2 and 3
• (d) All of these

Q27. Which of the following is not a normal function of the human kidney?

• (a) Regulation of water level in the blood
• (b) Regulation of sugar level in the blood
• (c) Filter out urea
• (d) Secretion of several hormones

Q28. Consider the following statements:

• 1. If a body completely gains its original shape after the removal of forces, it is an elastic body.
• 2. The property to restore the natural shape of a body, is elasticity.
• 3. When a body partially regains its original shape after the removal of deforming force, it is partially elastic.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 1 and 3
• (c) 2 and 3
• (d) All of these

Q29. Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to:

• 1. act as a reducing agent.
• 2. remove silica associated with the iron ore.
• 3. function as fuel to supply heat.
• 4. act as an oxidising agent.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 4
• (c) 1 and 3
• (d) 3 and 4

Q30. Polymerase Chain Reaction (PCR) includes which of the following?

• 1. It is a scientific technique to amplify a single or a few copies of a piece of DNA across several orders of magnitude generating thousands or millions of copies of a particular DNA sequence.
• 2. DNA clearing for sequencing is based on Polymerase Chain Reaction.
• 3. PCR method relies on thermal cycling that consist of cycles of repeated heating and cooling of the reaction.

Select the correct answer using the codes given below.

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q31. Consider the following statements:

• 1. Kidney failure is treated with haemodialysis.
• 2. Kidney stones are madeup of calcium oxalate.
• 3. Urine is yellow in colour due to urochrome pigment.

Which of the statements given above is/are correct?

• (a) 2 and 3
• (b) 1 and 2
• (c) All of the above
• (d) None of the above

Q32. Consider the following statements:

• 1. Methyl alcohol is also called wood spirit because in early stage, it was prepared by the destructive distillation of wood.
• 2. Ethyl alcohol is also called grain alcohol because it is obtained by the starch enriched substance.
• 3. Rectified spirit is also called commercial alcohol.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 1 and 3
• (c) 2 and 3
• (d) All of these

Q33. Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?

• 1. Dispersion
• 2. Refraction
• 3. Internal reflection

Select the correct answer using the codes given below.

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of the above

Q34. Consider the following statements:

• 1. Hardness of water depends upon its soap consuming power.
• 2. Temporary hardness is due to bicarbonates of magnesium and calcium.
• 3. Permanent hardness of water is due to sulphate and/or chloride of calcium and magnesium.
• 4. Permanent hardness can be removed by boiling.

Which of the statements given above are correct?

• (a) 3 and 4
• (b) 1, 2 and 3
• (c) 2 and 3
• (d) All of these

Q35. Consider the following hormones:

• 1. Cytokinin
• 2. Auxin
• 3. Gibberellin
• 4. Abscissic acid

Which of the hormones given above stimulates the plant cells to grow in a manner such that the plant appears to be bent towards light?

• (a) 1 and 2
• (b) 2 and 4
• (c) Only 3
• (d) 3 and 4

Q36. Consider the following statements:

• 1. A thermoelectric refrigerator works on Peltier effect.
• 2. The electrolyte in the dry cell is ammonium chloride.
• 3. The electrolyte in a car battery, is sulphuric acid.
• 4. When a metal is heated, its resistance increases.

Which of the statements given above are correct?

• (a) 1, 2 and 3
• (b) 2, 3 and 4
• (c) 1, 2 and 4
• (d) All of these

Q37. Consider the following with regard to Positron Emission Tomography:

• 1. It is a Nuclear Medical Imaging Technique that produces a three-dimensional image or picture of functional process in the body.
• 2. The system detects pairs of gamma rays emitted indirectly by a positron emitting radionuclide (tracer).

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of these

Q38. Consider the following statements:

• 1. The conductivity of electrolyte increases with rise in temperature.
• 2. Voltameter is used in the process of electrolysis.
• 3. Electrolysis of water is also called hydrolysis.

Which of the statements given above is/are correct?

• (a) Only 3
• (b) 1 and 2
• (c) 2 and 3
• (d) All of these

Q39. Consider the following statements:

• 1. Stem develops from plumule.
• 2. Roots develops from radicle.
• 3. Phylloclade is a modification of stem.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of the above

Q40. Consider the following statements:

• 1. In railway track or road, the inner track/edge is comparatively less in height than the outer.
• 2. Washing machine is working on the principle of centrifugation.
• 3. A car takes a turn on level road. It may be thrown outwards because of the lack of centripetal force.

Which of the statements given above is/are correct?

• (a) Only 3
• (b) 1 and 3
• (c) 2 and 3
• (d) All of these

Q41. Consider the following statements:

• 1. Anthrax is a bacterial disease.
• 2. Swine flu is a viral disease.
• 3. Anaplasmosis is a fungal disease.
• 4. Ringworm is a protozoal disease.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 1, 2 and 4
• (c) 2, 3 and 4
• (d) All of the above

Q42. Consider the following statements:

• 1. Boric acid is a mild antiseptic and is used as a food preservative.
• 2. Borax and other borates are used in water-treatment, timber preservation, glass manufacture.
• 3. Sodium peroxoborate is an important constituent of washing powder.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 2 and 3
• (c) 1 and 3
• (d) All of these

Q43. In an experiment to determine the Young's modulus of a material, the suspended mass is doubled. Then, the Young's modulus of the wire:

• (a) becomes double
• (b) becomes four times
• (c) remains unchanged
• (d) becomes holy

Q44. Match of the following:

Codes: A B C D

• (a) 1 2 3 4
• (b) 2 1 3 4
• (c) 2 1 4 3
• (d) 2 4 1 3

Q45. Which of the following statements is/are correct?

• 1. The group of buffalo is herd.
• 2. The group of sheep is flock.
• 3. The group of goat is tribe.
• 4. The group of horse is pack.

Select the correct answer using the codes given below.

• (a) Only 1
• (b) 1, 2 and 3
• (c) 1, 2 and 4
• (d) 2, 3 and 4

Q46. Consider the following statements:

• 1. Gold is the most ductile metal.
• 2. The best conductors of heat are silver and copper.
• 3. Alkali metals (lithium, sodium, potassium) are so soft that they can be cut with a knife.

Which of the statements given above are correct?

• (a) 1 and 2
• (b) 1 and 3
• (c) 2 and 3
• (d) All of these

Q47. A pair of chromosomes in fruit fly and humans determine sex. These are referred to as sex chromosomes. What is the name given to other chromosomes?

• (a) Allosomes
• (b) Autosomes
• (c) Heterosomes
• (d) Homosomes

Q48. The refractive index of a medium is √3. Which one of the following is correct?

• (a) The sine of angle of incidence is √3 times the sine of angle of refraction
• (b) The angle of incidence is twice the angle of refraction
• (c) The sine of angle of refraction is √3 times the sine of angle of incidence
• (d) The angle of refraction is twice the angle of incidence

Q49. Consider the following statements:

• 1. The positive charge is essentially immovable because it contains practically all the mass of the atom.
• 2. Atom is the smallest indivisible particle of an element which takes part in a chemical reaction.

Which of the statements given above is/are correct?

• (a) Only 1
• (b) Only 2
• (c) Both 1 and 2
• (d) None of the above

Q50. Glucose occurs in nature in the combined form as polysaccharides which on hydrolysis yield glucose. These polysaccharides are:

• (a) amylose and amylopectin
• (b) glycogen and cellulose
• (c) starch and cellulose
• (d) All of the above