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Match the Column I with Column II
(a) -> (ii)
(b) -> (ii)
(c) -> (i)
(d) -> (i)
(e) -> (i)
(f) -> (ii)
(g) -> (ii)
(h) -> (ii)
Sam found a bag containing the following materials
(ii) Paper stained with oil
(iv) Glass spectacles
Which is/are these materials are opaque.
(a) (i) only
(b) (iv) only
(c) (i) and (iii)
(d) (ii) and (iv Answer
Fill in the blanks
(a) Materials that do not allow light to pass through them are called ____.
(b) Metals have a shiny appearance called _____.
(c) Materials which can be pressed easily are called _____ materials.
(d) Copper and gold are _______
(e) Dried leaves fallen on the surface of a pond _____ in the pond
(f) ______ and ________ dissolves in water Answer
(f) Oxygen and Carbon-dioxide
State whether the statements given below are True or False.
(i) Wood is opaque, while glass is transparent .
(ii) Materials are grouped for convenience ,study their properties and their uses
(iii) Hydrogen dissolves in water.
(iv) A piece of wood floats on water.
(v) All gases dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in water.
(viii) Nitrogen dissolves in water.
(ix) Salt is soluble in water while sand is not.
(x) cooked rice is a soft material Answer
Why metals often lose their shine and appear dull? Answer:
Because of action of air and moisture
Which of the following materials is not lustrous?
(d) Diamond Answer
How do aquatic plants and animals survive in water? Answer
Aquatic plants and animals survive in water as Oxygen and Carbon dioxide dissolves in water. Dissolved oxygen is available for animal and plants for respiration and survival
Which of the following is a soft material?
(d) None of these Answer
Select odd one out?
(d) Sand Answer
Find the odd one out from the following
(c) Pressure cooker
(d) Eraser Answer
Find the Jumbled word
f. TCASLPI Answer
Which ones are correct
(a) A stone is hard. It therefore sinks in water.
(b) Sponge is soft. It can be compressed easily.
(c) Water in transparent. Things can be clearly seen through it.
(d) All are correct. Answer
Which one is compressible?
d. stone Answer
Which pair of substance float in water?
(a) Pin, oil drops
(b) Coin, rubber band
(c) Plastic ball, feather
(d) Iron nail, cotton thread Answer
Question 15 Crossword Puzzle
2. cotton is a ____materials
4. The materials which are difficult to compress are known as _________
5. Iron,copper , aluminium is called _____
6. The materials through which objects can be seen, but not clearly, are known as _________
8. shiny appearance is termed as ______ Down
1. Opaque material which we got from trees
3. water is a _______ liquid
7. vinegar is ______ in water Answer
Pick one material from the following which is completely soluble in water.
(a) Chalk powder
(b) Tea leaves
(d) Saw dust Answer
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?
(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv) Answer
(c) Question 18
An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull?
(a) Mustard oil
(b) Soft drink
(c) Coconut oil
(d) Kerosene Answer
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