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13 questions
An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull?
mustard oil
soft drink
coconut oil
kerosene
pick one material from the following which is completely soluble in water
chalk powder
tea leaves
glucose
saw dust
You are provided with the following materials.
i) magnifying glass
ii) mirror
iii) stainless steel plate
iv) glass tumbler
which of the above materials will you identify as transparent?
i and ii
i and iii
i and iv
iii and iv
Boojho found a bag containing the following materials.
i) mirror
ii) paper stained with oil
iii) magnet
iv) glass spectacles
help Boojho in finding out the materials that are opaque.
i only
iv only
i and iii
ii and iv
While doing an activity in class, the teacher asked Paheli to handover a translucent material. Which among the following materials will Paheli pick and give her teacher?
glass tumbler
mirror
muslin cloth
aluminium foil
Which pair of substances among the following would float in a tumbler half filled with water?
cotton thread and thermocol
feather and plastic ball
pin and oil drops
rubber band and coin
Which among the following are commonly used for making safety pins?
wood and glass
plastic and glass
leather and plastic
steel and plastic
Which of the following materials are non lustrous?
gold
silver
diamond
wood
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
Which type of the following materials is used for making the front glass (wind screen) of the car?
transparent
translucent
opaque
all the above
Objects around us are made of different _______________
Materials that can be compressed or scratched easily are called ________ materials.
Vinegar is _______________ in water while kerosene is _____________ in water.
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