[Quiz] Science_Chemistry- Free Online Test - 1 (6th STD)

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Subject	Science - Chemistry
Exam Portions	Tamil Nadu Samacheer Kalvi 6th Std Science - Chemistry FULL
Science Chemistry Online Test Series No: 1
No of Questions	20
Duration	10 Min
Difficulty Level	Easy
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1. Which of the following are the non periodic changes?
   
   1.  Season
   2.  Earthquake
   3.  Tsunami
   4.  Earthquake and Tsunami
   
   
2. A: Reaction in which heat is absorbed is said to be exothermic reaction B: Dissolution of glucose in water is an endothermic reaction
   
   1.  Only A is Correct
   2.  Only B is Correct
   3.  Both A and B are Correct
   4.  Neither A nor B is Correct
   
   
3. A: Reaction in which heat is evolved is said to be exothermic reaction B: Dissolution of Detergent in water is an endothermic reaction
   
   1.  Only A is Correct
   2.  Only B is Correct
   3.  Both A and B are Correct
   4.  Neither A nor B is Correct
   
   
4. Velcro, which is used in our footwear was invented by
   
   1.  Galileo
   2.  Neil bohr
   3.  Newton
   4.  George Mestral
   
   
5. Which one among the following is a desirable change?
   
   1.  earthquake
   2.  tsunami
   3.  ripening of fruits
   4.  Curdling of Milk
   
   
6. The method in which the pebbles are separated from sand is
   
   1.  evaporation
   2.  sieving
   3.  sedimentation
   4.  None of the above
   
   
7. What is a supernatant liquid?
   
   1.  super cooled liquid
   2.  liquid collected during condensation
   3.  used to make glasses
   4.  Clear liquid above the sediment during sedimentation process
   
   
8. Which of the following method is used  to separate dissolved solids from the liquid?
   
   1.  Evaporation
   2.  Sieving
   3.  Sedimentation
   4.  None of the above
   
   
9. A: Common salt can only be obtained from sea water. B: One litre of Sea water contains about 3.5 grams of salt. C: Common Salt consists of more than 50 minerals
   
   1.  Both A and B are Correct
   2.  Neither A nor B is Correct
   3.  Only A is wrong
   4.  Only B is wrong
   
   
10. Which of the following are the kind of Thermo setting plastics
    A:PET
    B:PVC
    C:Melamine
    D:Bakelite
    
    1.  A and B
    2.  C and D
    3.  A and C
    4.  B and D
    
    
11. The important constituents of cement are
    
    1.  Lime Stone and Gypsum
    2.  Lime Stone and Clay
    3.  Clay and Gypsum
    4.  Lime stone, Clay and Gypsum
    
    
12. The plastics that can be easily melt and softened by heating is
    
    1.  natural plastics
    2.  artificial plastics
    3.  thermo setting plastics
    4.  thermo plastics
    
    
13. The plastics that cannot be melt and softened by heating is
    
    1.  natural plastics
    2.  artificial plastics
    3.  thermo setting plastics
    4.  thermo plastics
    
    
14. Expand "PVC"
    
    1.  Poly Vernier Chlorine
    2.  Poly Vinyl Coating
    3.  Poly Vinyl Chlorine
    4.  Poly Vinyl Chloride
    
    
15. A: Bakelite is a good conductor of electricity B: Bakelite is used in switches
    
    1.  Neither A nor B is Correct
    2.  Both A and B are Correct
    3.  Only B is wrong
    4.  Only A is wrong
    
    
16. Which of the following substance is used in fire proof clothes?
    
    1.  PET
    2.  Melamine
    3.  PVC
    4.  Bakelite
    
    
17. A: The harappan people were the first to use glass materials B: Glass is made up of silica Only
    
    1.  Only A is wrong
    2.  Only B is wrong
    3.  Both A and B are Correct
    4.  Neither A nor B is Correct
    
    
18. Annealing is a process in which glass is cooled
    
    1.  gradually
    2.  quickly
    3.  very slowly
    4.  none of the above is correct
    
    
19. A: Umbrella is made from material called PVC B: The chemical substance found in the cotton fibre is called cellulose
    
    1.  Both A and B are correct
    2.  Neither A nor B is Correct
    3.  Only A is wrong
    4.  Only B is wrong
    
    
20. India Cement Ltd was started in India in the year
    
    1.  1910
    2.  1914
    3.  1931
    4.  1947
    
    

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