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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 ? 
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