Q.1: The mixture in which the constituents are uniformly distributed and each part of the mixture has the same properties, is known as _________________ mixture.
a) Homogeneous
b) Heterogeneous
c) None
Q.2: The substances which are mixed to form a mixture are called ____________.
a) constituents
b) components
c) Both
Q.3: Which of the following is an example of heterogeneous mixture ?
a) sugar and water solution
b) salt and water solution
c) oil and water solution
Q.4: Which of the following statements are correct regarding the separation of mixtures ?
i) To obtain useful components.
ii) To remove useful components.
iii) To remove impurities.
a) i and ii
b) i and iii
c) i, ii and iii
Q.5: _______________ means to take out by hand.
a) Hand-picking
b) Threshing
c) Winnowing
Q.6: Threshing can be done by a machine called __________.
a) thresher
b) harvester
c) lawn mower
Q.7: If Neha needs to separate grains from a mixture of grains and husk, then which method of separation she would use ?
a) Hand-picking
b) Threshing
c) Winnowing
Q.8: Two immiscible liquids can be separated from their mixture using ________________.
a) Liebig’s condenser
b) distillation flask
c) separating funnel
Q.9: In loading, ___________ is added to increase the rate of sedimentation.
a) alum
b) sodium
c) sulphur
Q.10: Insoluble substances that are heavier than liquid can be separated by ___________.
a) sedimentation
b) decantation
c) both
Q.11: ______________ are the heavy, insoluble settled particles at the bottom of the liquid.
a) sediments
b) grains
c) mixture
Q.12: Water that we get from waterworks can be made absolutely safe for drinking by using an ____________________.
a) electric water filter
b) electric motor
c) electric ultraviolet water filter
Q.13: _________________ is used by farmers to separate heavier and lighter components of a mixture by wind.
a) Threshing
b) Sieving
c) Winnowing
Q.14: A ____________ is a shallow vessel with small holes.
a) filter paper
b) sieve
c) both
Q.15: Which of the following is insoluble in water ?
a) sand
b) chalk powder
c) both
Q.16: The space between the particles is known as _____________ space.
a) interparticle
b) intersubstance
c) intermixture
Q.17: ______________ can be used to separate components of a mixture of different sizes.
a) Winnowing
b) Sieving
c) Filtration
Q.18: We get salt from sea water by the method of ______________.
a) condensation
b) decantation
c) evaporation
Q.19: Mixture of gases is an example of _____________ mixture.
a) Homogeneous
b) Heterogeneous
c) Both
Q.20: The unwanted particles left behind in the filter paper, in the filtration process, is known as ___________.
a) residue
b) sediment
c) none
Answers:
- a
- c
- c
- b
- a
- a
- c
- c
- a
- c
- a
- c
- c
- b
- c
- a
- b
- c
- a
- a
Happy new year Priyaa
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Thank you dear….🤗❤️
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May you too have joyous and glowing days ahead ☺️❤️
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Thanks much🙏🏻
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Reblogged this on Love and Love Alone.
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Happy New Year 🎉🎊
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Thank you and wish you the same…!!
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🍭🍩🍫💐🍬🧁🍰🍨🍻🍷😁
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🍭🍩🍫💐🍬🧁🍰🍨🍻🍷😁☺️
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