Class VI

The materials which do not allow light to pass through them 
  1. Transparent 
  2. Translucent 
  3. Opaque 
  4. All of these 
The material that sinks in water is 
  1. Stone 
  2. Plasstic ball 
  3. Dry leavcs 
  4. Piece of wood 
Which is the hardest material among the following ? 
  1. Sponge 
  2. Rubber 
  3. Wood 
  4. Iron 
The material which has luster 
  1. Iron 
  2. Wood 
  3. Rubber 
  4. Plastic 
A material which dissolves completely in water is called 
  1. Soluble 
  2. Insoluble 
  3. Opaque 
  4. Transparent 
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