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Everyday Science (General Science) - MCQs


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Q19.
Which one of the following is not a chemical change ?
  • A. Digestion of food
  • B. Freezing of water
  • C. Curding of milk
  • D. Ripening of fruits

    Discuss    
Q20.
Butter is a colloid formed when
  • A. water is dispersed in water
  • B. fat is dispersed in water.
  • C. fat globules are dispersed in water.
  • D. None of these

    Discuss    
Q21.
Radioactive substance used in dating geological object is
  • A. C-11
  • B. C-12
  • C. C-14
  • D. None of these

    Discuss    
Q22.
The gas used in a refrigerator is
  • A. Cooled down when expanded
  • B. Heated up on flowing
  • C. Cooled down when compressed
  • D. None of these

    Discuss    
Q23.
A radar beam consists of
  • A. microwaves
  • B. X-rays
  • C. ultraviolet rays
  • D. infrared rays

    Discuss    
Q24.
A fuse wire is made of an alloy of
  • A. tin and aluminium
  • B. tin and lead
  • C. tin and copper
  • D. None of these

    Discuss