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20 questions
Which of the following materials is not lustrous?
Gold
Silver
Wood
Diamond
Which type of the following materials is used for making the front glass (wind screen) of a car?
Transparent
Translucent
Opaque
None of the above
An oiled paper act as a _______ material.
Transparent
Translucent
Hard
Opaque
Take two samples, one is oil and other is water. Mix the two. You observe that
They are soluble.
Oil floats on water
Water floats on oil
None of the above
Which one of the following dissolve in water
Wood
Rock
Sugar
Plastic
Which of the following substance is opaque?
Wood
Glass container
Oily paper
Water
Which of the following does not float on water?
Feather
Paper
Coconut oil
Stone
Find the odd one?
Sugar
Salt
Glucose
Sand
Which of the following statements is not true?
Materials are grouped for convenience.
Materials are grouped to study their properties.
Materials are grouped for fun.
Materials are grouped according to their uses.
select the objects which is lustrous-
steel spoon
cotton shirt
plastic toy
wood
Nisha was making a list of things that are obtained from plants and Amol was making a list of things that can dissolve in water. Which can be grouped in both the list?
Oil
Sugar
Cotton
Table salt
Nina had a mixture of sand and salt. Which of the following properties of salt can she use to separate them?
Salt is white in colour.
Salt dissolves in water.
Salt has a taste.
Salt is a powder.
Ramesh was applying paint on the wall during which some of the paint fell on his hands. Instead of using water, Ramesh used kerosene oil to wash his hands.
Which of the following options explains Ramesh's decision?
Kerosene is softer than water.
Kerosene smells better than water.
Paints dissolve in kerosene and not in water.
Kerosene is more easily available than water.
Which among the following are commonly used for making safety pin?
Wood and Glass
Plastic and Glass
Leather and plastic
Steel and plastic
Materials that allow all the light to pass through them are __________________
Materials that allow some light to pass through them___________
Materials that allow heat to pass through them are ________________ of heat
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