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Page 3 SCHOLASTIC APTITUDE TEST 2019-20 (PHYSICS) 1. Which of the following terms does not represent electrical power in a circuit ? (A) I 2 R (B) IR 2 (C) VI (D) V 2 /R 2. For a steady current I, the amount of heat H produced in time t is (A) IR 2 t (B) IRt 2 (C) I 2 Rt (D) I 2 R 2 t 3. What phenomenon of light causes the blue colour of the sky and the redding of the sun at sunrise or sunset? (A) Reflection (B) Refraction (C) Scattering (D) total internal reflection 4. The power of a lens is -2.5D. Its focal length is (A) - 2.5cm (B) -4D (C) - 40cm (D) - 66.6cm 5. At focus F and between F and 2F, a concave mirror always forms a (A) real, inverted and magnified image (B) virtual, erect and magnified image (C) virtual, inverted and diminished image (D) real, erect and diminished image 6. What is the magnitude of force F on a charge q moving with a velocity v in a perpendicular magnetic field B? (A) qB v (B) vB q (C) qvB (D) qv B 7. Which of the following is most suitable for the core of electromagnets? (A) Air (B) Soft iron (C) Steel (D) Cu-Ni alloy 8. Magnetic fields do not interact with (A) electric charges at rest (B) electric charges in motion (C) permanent magnets at rest (D) permanent magnets in motion 9. Which of the following is correct? (A) Joule = Coulomb ? Volt (B) Joule = Coulomb / Volt (C) Joule = Volt/ Ampere (D) Joule = Ampere/ volt 10. A body can be negatively charged by (A) giving some protons to it (B) removing some neutrons from it (C) giving electrons to it (D) removing some electrons from it Page 4 SCHOLASTIC APTITUDE TEST 2019-20 (PHYSICS) 1. Which of the following terms does not represent electrical power in a circuit ? (A) I 2 R (B) IR 2 (C) VI (D) V 2 /R 2. For a steady current I, the amount of heat H produced in time t is (A) IR 2 t (B) IRt 2 (C) I 2 Rt (D) I 2 R 2 t 3. What phenomenon of light causes the blue colour of the sky and the redding of the sun at sunrise or sunset? (A) Reflection (B) Refraction (C) Scattering (D) total internal reflection 4. The power of a lens is -2.5D. Its focal length is (A) - 2.5cm (B) -4D (C) - 40cm (D) - 66.6cm 5. At focus F and between F and 2F, a concave mirror always forms a (A) real, inverted and magnified image (B) virtual, erect and magnified image (C) virtual, inverted and diminished image (D) real, erect and diminished image 6. What is the magnitude of force F on a charge q moving with a velocity v in a perpendicular magnetic field B? (A) qB v (B) vB q (C) qvB (D) qv B 7. Which of the following is most suitable for the core of electromagnets? (A) Air (B) Soft iron (C) Steel (D) Cu-Ni alloy 8. Magnetic fields do not interact with (A) electric charges at rest (B) electric charges in motion (C) permanent magnets at rest (D) permanent magnets in motion 9. Which of the following is correct? (A) Joule = Coulomb ? Volt (B) Joule = Coulomb / Volt (C) Joule = Volt/ Ampere (D) Joule = Ampere/ volt 10. A body can be negatively charged by (A) giving some protons to it (B) removing some neutrons from it (C) giving electrons to it (D) removing some electrons from it 11. The resistances R1 and R2 are connected in parallel. The equivalent resistance of the combination is (A) 12 RR + (B) 12 RR - (C) 12 12 RR RR + (D) 12 12 RR RR + 12. One ampere is synonymous with (A) Cs -1 (B) JC (C) JC -1 (D) NC -1 13. The ratio of the focal length of spherical mirror to its radius of curvature is (A) 0.5 (B) 1 (C) 2 (D) 3 (CHEMISTRY) 14. Fe2O3 + 2Al? Al2O3 + 2Fe The above reaction is an example of a (A) combination reaction (B) double displacement reaction (C) decomposition reaction (D) displacement reaction 15. Select the mineral acid from the following (A) Acetic Acid (B) Citric acid (C) Hydrochloric acid (D) Lactic acid 16. Which of the following indicators is not an acid- base indicator ? (A) Phenolphthalein (B) Vanilla (C) Litmus (D) Methyl orange 17. Which of the following methods is used to obtain chlorine and hydrogen from sodium chloride? (A) Electrolysis (B) Thermal heating (C) Evaporation (D) Electroplating 18. Which of the following metals does not react with dilute hydrochloric acid to liberate hydrogen gas? (A) Calcium (B) Zinc (C) Iron (D) Silver 19. Which of the following reaction is not a redox reaction ? (A) Mg + Cl2 ? Cu + Cl2 (B) CuO + H2 ? Cu + H2O (C) AgNO3 + NaCl ? AgCl + NaNO3 (D) MnO2 + 4HCl ? MnCl2 + 2H2O + 2Cl2 20. In Aqua regia the ratio of concentrated HCl to concentrated HNO3 is (A) 1 : 3 (B) 3 : 1 (C) 1 : 2 (D) 2 : 1 21. Ethane, with the molecular formula C2H6 has (A) 6 covalent bonds (B) 7 covalent bonds (C) 8 covalent bonds (D) 9 covalent bonds 22. Glacial acetic acid is (A) An aqueous solution of alcohol (B) Vinegar (C) an aqueous solution of acetic acid (D) 100% pure – ethanoic acid Page 5 SCHOLASTIC APTITUDE TEST 2019-20 (PHYSICS) 1. Which of the following terms does not represent electrical power in a circuit ? (A) I 2 R (B) IR 2 (C) VI (D) V 2 /R 2. For a steady current I, the amount of heat H produced in time t is (A) IR 2 t (B) IRt 2 (C) I 2 Rt (D) I 2 R 2 t 3. What phenomenon of light causes the blue colour of the sky and the redding of the sun at sunrise or sunset? (A) Reflection (B) Refraction (C) Scattering (D) total internal reflection 4. The power of a lens is -2.5D. Its focal length is (A) - 2.5cm (B) -4D (C) - 40cm (D) - 66.6cm 5. At focus F and between F and 2F, a concave mirror always forms a (A) real, inverted and magnified image (B) virtual, erect and magnified image (C) virtual, inverted and diminished image (D) real, erect and diminished image 6. What is the magnitude of force F on a charge q moving with a velocity v in a perpendicular magnetic field B? (A) qB v (B) vB q (C) qvB (D) qv B 7. Which of the following is most suitable for the core of electromagnets? (A) Air (B) Soft iron (C) Steel (D) Cu-Ni alloy 8. Magnetic fields do not interact with (A) electric charges at rest (B) electric charges in motion (C) permanent magnets at rest (D) permanent magnets in motion 9. Which of the following is correct? (A) Joule = Coulomb ? Volt (B) Joule = Coulomb / Volt (C) Joule = Volt/ Ampere (D) Joule = Ampere/ volt 10. A body can be negatively charged by (A) giving some protons to it (B) removing some neutrons from it (C) giving electrons to it (D) removing some electrons from it 11. The resistances R1 and R2 are connected in parallel. The equivalent resistance of the combination is (A) 12 RR + (B) 12 RR - (C) 12 12 RR RR + (D) 12 12 RR RR + 12. One ampere is synonymous with (A) Cs -1 (B) JC (C) JC -1 (D) NC -1 13. The ratio of the focal length of spherical mirror to its radius of curvature is (A) 0.5 (B) 1 (C) 2 (D) 3 (CHEMISTRY) 14. Fe2O3 + 2Al? Al2O3 + 2Fe The above reaction is an example of a (A) combination reaction (B) double displacement reaction (C) decomposition reaction (D) displacement reaction 15. Select the mineral acid from the following (A) Acetic Acid (B) Citric acid (C) Hydrochloric acid (D) Lactic acid 16. Which of the following indicators is not an acid- base indicator ? (A) Phenolphthalein (B) Vanilla (C) Litmus (D) Methyl orange 17. Which of the following methods is used to obtain chlorine and hydrogen from sodium chloride? (A) Electrolysis (B) Thermal heating (C) Evaporation (D) Electroplating 18. Which of the following metals does not react with dilute hydrochloric acid to liberate hydrogen gas? (A) Calcium (B) Zinc (C) Iron (D) Silver 19. Which of the following reaction is not a redox reaction ? (A) Mg + Cl2 ? Cu + Cl2 (B) CuO + H2 ? Cu + H2O (C) AgNO3 + NaCl ? AgCl + NaNO3 (D) MnO2 + 4HCl ? MnCl2 + 2H2O + 2Cl2 20. In Aqua regia the ratio of concentrated HCl to concentrated HNO3 is (A) 1 : 3 (B) 3 : 1 (C) 1 : 2 (D) 2 : 1 21. Ethane, with the molecular formula C2H6 has (A) 6 covalent bonds (B) 7 covalent bonds (C) 8 covalent bonds (D) 9 covalent bonds 22. Glacial acetic acid is (A) An aqueous solution of alcohol (B) Vinegar (C) an aqueous solution of acetic acid (D) 100% pure – ethanoic acid . 23. Which of the following is a non- metal and also a solid? (A) Iodine (B) Mercury (C) Boron (D) Hydrogen 24. Propane has (A) 8 covalent bonds (B) 9 covalent bonds (C) 10 covalent bonds (D) 11 covalent bonds 25. An element has electronic configuration 2, 8, 8, 1. Which statement is not correct about the element ? (A) It is present in group 3 (B) Its valency is one negative (C) It is present in group 1 (D) It is present in 4 th period 26. The property by which a large number of atoms of the same element get linked through covalent bonds forming long chains is called (A) catenation (B) polymerization (C) allotropy (D) addition reaction (BIOLOGY) 27. Saliva contains an enzyme called (A) Amylase (B) Lypase (C) Pepsin (D) Tripsin 28. Regulation of respiration is under the control of (A) Cerebrum (B) cerebellum (C) Medula oblongata (D) Pons 29. Embryo sac is found in (A) endosperm (B) embryo (C) ovule (D) seed 30. A pair of contrasting characters is called (A) Phenotype (B) genotype (C) allele (D) gene 31. Which of the following is not used as biomass? (A) Plant waste (B) Wood (C) Animal waste (D) Human excreta 32. The green plants in a terrestrial ecosystem capture the energy of the sun about (A) 90% (B) 80% (C) 70 % (D) 10% 33. The presence of which microorganism in Ganga water indicates contamination ?Read More
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