MCQ Questions for Class 6 Science: Ch 4 Sorting Materials into Groups

MCQ Questions for Class 6 Science: Ch 4 Sorting Materials into Groups

1. Hardest known natural substance is
(a) Mercury
(b) Wood
(c) Gold
(d) Diamond
► (d) Diamond

2. Chair, table and plough are made up of
(a) Plastic
(b) Iron
(c) Wood
(d) Paper
► (c) Wood

3. Which among the following pair is commonly used for making safety pin?
(a) Wood and glass
(b) Steel and plastic
(c) Leather and plastic
(d) Plastic and glass
► (b) Steel and plastic

4. Which one is not a transparent object?
(a) Clean water
(b) Glass
(c) Thin sheet of plastic
(d) Muddy water
► (d) Muddy water

5. Non-metal which is good conductor of electricity is
(a) Graphite
(b) Diamond
(c) Sulpher
(d) Nitrogen
► (a) Graphite

6. Which type of material is used to make wind screen of a car?
(a) Transparent
(b) Translucent
(c) Opaque
(d) Semi-transparent
► (a) Transparent

7. Which pair of substance float in water
(a) Pin, oil drops
(b) Thermocol, Cotton thread
(c) Plastic ball, feather
(d) Coin, rubber band
► (c) Plastic ball, feather

8. The substance through which light do not pass is called
(a) Opaque object
(b) Translucent object
(c) Semiconductor
(d) Transparent object
► (a) Opaque object

9. Properties of three substances X, Y and Z are given below : X : Heavy and non-magnetic Y : Light and non-magnetic Z : Magnetic If X, Y and Z are of same size and colour then, which of the following can be used to separate these particles from their mixture?
(a) Handpicking followed by filtration
(b) Winnowing followed by magnetic separation
(c) Magnetic separation followed by sieving
(d) Sublimation followed by distillation
► (b) Winnowing followed by magnetic separation

10. Perfume is a substance which is
(a) Malleable
(b) Volatile
(c) Sublime
(d) Non-volatile
► (b) Volatile

11. CNG stands for
(a) Compressed natural gas
(b) Compound natural gas
(c) Common natural gas
(d) Compressed neutral gas
► (a) Compressed natural gas

12. Select the translucent materials from the following?
(a) Glass tumbler
(b) Aluminium foil
(c) Muslin cloth
(d) Mirror
► (c) Muslin cloth

13. Choose the opaque materials from the following
(a) Thin sheet of plastic
(b) Glass container
(c) Wooden door
(d) Clear water
► (c) Wooden door

14. What are the characteristics of metals?
(a) Good conductors of electricity and heat', solid at room temperature; transparent shine brightly when polished.
(b) Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; do not shine at all when polished.
(c) Bad conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films.
(d) Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; shine brightly when polished.
► (d) Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; shine brightly when polished.

15. Metallic object loose their lustre due to
(a) Corrosion
(b) Melting
(c) Wetting
(d) Oiling
► (a) Corrosion

16. Which is soluble in water?
(a) Sand
(b) Sugar
(c) Mustard oil
(d) Plastic
► (b) Sugar

17. The ability of a solute to get dissolved in to a solvent is called
(a) Freezing
(b) Liquidity
(c) Melting
(d) Solubility
► (d) Solubility

18. Which is lighter than water?
(a) Stone
(b) Diamond
(c) Steel
(d) Petrol
► (d) Petrol

19. Select an incorrect reason for separating components of a mixture.
(a) To separate two or more different but useful components.
(b) To remove undesirable and useless components.
(c) To remove pure or harmless components.
(d) To obtain pure sample of a substance.
► (c) To remove pure or harmless components.

20. Which among the following materials are not lustrous
(a) Silver
(b) Gold
(c) Diamond
(d) Wood
► (d) Wood

21. A science teacher labelled three glass slides as P, 0 and R. She painted slide Q with light blue colour, slide R with black colour and slide P was left as such. Then she asked students to put the slide on a white paper having (X) mark on it. Students will be able to see the mark clearly (or partially)
(a) In slide P as it is translucent.
(b) In slide Q as it is translucent
(c) In slide R as it is opaque.
(d) In all the slides as paint does not change the nature of glass.
► (b) In slide Q as it is translucent

22. In which solution, iron nail lose its shine and appear dull?
(a) Coconut oil
(b) Kerosene
(c) Mustard
(d) Soft drink
► (d) Soft drink

23. Which one is a compound?
(a) Gold
(b) Common salt
(c) Silver
(d) Iron
► (b) Common salt

24. Which is a magnetic material?
(a) Copper
(b) Iron
(c) Aluminium
(d) Silver
► (b) Iron

25. If a substance can be beaten into thin sheet, it is called
(a) Brittle
(b) Malleable
(c) Good conductor
(d) Ductile
► (b) Malleable

26. Which of the following does not represent a characteristic of pure substance?
(a) It has a uniform texture throughout (homogeneous).
(b) It has a fixed boiling point or melting point.
(c) It is made up of different types of particles.
(d) It can be an element or a compound.
► (c) It is made up of different types of particles.
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