MCQ : Is Matter Around Us Pure Chapter 2 Class 9 Science Chemistry
The MCQ for Class 9 Science Chapter 2 Is Matter around us Pure has been given below. There are four option of each question and you have to select any one out of these four options. So, going through this MCQ will help students to score more in exams.
1. Rusting of an article made up of iron is called
(i) corrosion and it is a physical as well as chemical change
(ii) dissolution and it is a physical change
(iii) corrosion and it is a chemical change
(iv) dissolution and it is a chemical change
Answer:
(iii) corrosion and it is a chemical change
2. A mixture of sulphur and carbon disulphide is
(i) heterogeneous and shows tyndall effect
(ii) homogeneous and shows tyndall effect
(iii) heterogeneous and does not show tyndall effect
(iv) homogeneous and does not show tyndall effect
Answer:
(iv) homogeneous and does not show tyndall effect
3. A mixture of sulphur and carbon disulphide is
(i) heterogeneous and shows tyndall effect
(ii) homogeneous and shows tyndall effect
(iii) heterogenoeus and does not show tyndall effect
(iv) homogeneous and does not show tyndall effect
Answer:
(iv) homogeneous and does not show tyndall effect
4. Tincture of iodine has antiseptic properties. This solution is made by dissolving
(i) iodine in potassium iodide
(ii) iodine in vaseline
(iii) iodine in water
(iv) iodine in alcohol
Answer:
(iv) iodine in alcohol
5. Blood and sea water are
(i) both mixtures
(ii) both are compounds
(iii) blood is a mixture whereas sea water is a compound
(iv) blood is a compound and sea water is a mixture
Answer:
(i) both mixtures
6. In a water - sugar solution
(i) water is a solute and sugar is solvent
(ii) water is solvent and sugar is solute
(iii) water is solute and water is also solvent
(iv) none of these
Answer:
(ii) water is solvent and sugar is solute
7. Boron and Carbon are
(i) metalloids
(ii) metalloid and non - metal respectively
(iii) metal
(iv) non- metal and metalloid respectively
Answer:
(ii) metalloid and non - metal respectively
8. Which of the following metod would you use to separate cream from milk ?
(i) fractional distillation
(ii) distillation
(iii) centrifugation
(iv) filtration
Answer:
(iii) centrifugation
9. Cooking of food and digestion of food :
(i) are both physical processes
(ii) are both chemical processes
(iii) cooking is physical whereas digestion is chemical
(iv) cooking is chemical whereas digestion is physical
Answer:
(ii) are both chemical processes
10. Mercury and Bromine are both
(i) liquid at room temperature
(ii) solid at room temperature
(iii) gases at room temperature
(iv) both (i) and (ii)
Answer:
(i) liquid at room temperature
11. Air shows the property of
(i) N2
(ii) O2
(iii) Both (i) and (ii)
(iv) None of these
Answer:
(iii) Both (i) and (ii)
12. The components of water can be separated by
(i) Physical methods
(ii) Chemical methods
(iii) Both
(iv) They can't be seprated
Answer:
(ii) Chemical methods
13. Mixture can be
(i) homogeneous
(ii) heterogeneous
(iii) Both (i) and (ii)
(iv) pure substance
Answer:
(iii) Both (i) and (ii)
14. Brass is a
(i) Compound
(ii) Element
(iii) Homegeneous mixture
(iv) Heterogeneous mixture
Answer:
(iii) Homogeneous mixture
15. Brass is a solution of molten copper in
(i) solid zinc
(ii) molten zinc
(iii) gaseous zinc
(iv) molten tin
Answer:
(ii) molten zinc
16. 24 carat of diamond is equal to
(i) 200mg
(ii) 200g
(iii) 95% mg
(iv) 91% gold
Answer:
(i) 200 mg
17. Diamond is lustrous because
(i) it is colourless
(ii) it is hard
(iii) it is pure
(iv) its reflective index is high
Answer:
(iv) its reflective index is high
18. If we burn graphite,
(i) residue will be left
(ii) no residue will be left
(iii) it will not burn
(iv) it will change into diamond
Answer:
(ii) no residue will be left
19. Nanometer is an
(i) instrument used for measuring micro - distance
(ii) instrument used for measuring macro - distance
(iii) unit for measuring micro - distance
(iv) unit for measuring macro - distance
Answer:
(iii) unit for measuring micro - distance
20. Barometer measures
(i) Pressure
(ii) Atmospheric pressure
(iii) wind velocity
(iv) Gaseous pressure
Answer:
(ii) Atmospheric Pressure
21. Thermometer is an instrument that measures
(i) Temperature of substance
(ii) Heat of substance
(iii) Radiation of substance
(iv) Flow energy in a substance
Answer:
(i) Temperature of substance
22. Anemometer measures :
(i) Amount of haemoglobin in blood
(ii) Pollination of plant by the wind
(iii) Wind resistance
(iv) Wind speed
Answer:
(iv) Wind speed