A. Zinc
B. Phosphorus
C. Sulphur
D. Oxygen
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A. Zinc
A. All metals are ductile.
B. All non-metals are ductile.
C. Generally, metals are ductile.
D. Some non-metals are ductile.
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C. Generally, metals are ductile.
A. Good, Electricity.
B. Bad, Electricity.
C. Bad, Heat
D. None of the above.
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A. Good, Electricity.
A. Hydrogen
B. Oxygen
C. Nitrogen
D. Carbon dioxide.
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A. Hydrogen
A. Malleability.
B. Ductility.
C. Sonorous.
D. Lustrous.
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B. Ductility.
A. Iron.
B. Calcium.
C. Sodium.
D. Aluminium.
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C. Sodium.
[CTET Sep 2014]
A. Copper sulphate and Copper carbonate.
B. Copper hydroxide and Copper carbonate.
C. Copper sulphate and Rust.
D. Copper sulphate and Iron oxide.
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B. Copper hydroxide and Copper carbonate.
A. It is very reactive with oxygen.
B. It reacts vigorously with water.
C. It reacts vigorously with oxygen but does not react with water at all.
D. It reacts vigorously with oxygen and water both.
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D. It reacts vigorously with oxygen and water both.
A. Zinc > Copper > Iron.
B. Copper > Zinc > Iron.
C. Iron > Zinc > Copper.
D. Zinc > Iron > Copper.
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D. Zinc > Iron > Copper.
A. Metallica.
B. Metalloids.
C. Metallurgy.
D. Metaphor.
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B. Metalloids.
A. Generally, non metals react with acids.
B. Sodium is very reactive metal.
C. Copper displaces zinc from zinc sulphate solution.
D. Coal can be drawn into wires.
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B. Sodium is very reactive metal.
A. Lemon pickle will not get spoiled easily and it lasts for a long time.
B. Lemon pickle may get spoiled because acid in lemon will react with aluminium.
C. lemon pickle will last for long time as aluminium do not react with lemon acid.
D. Both A and C.
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B. Lemon pickle may get spoiled because acid in lemon will react with aluminium.
A. Dilute sulphuric acid react with copper to produce hydrogen gas but dilute hydrocholoric acid do not react.
B. Both Dilute sulphuric acid and dilute hydrocholoric acid react with copper to produce hydrogen gas.
C. Both Dilute sulphuric acid and dilute hydrocholoric acid do not react with copper.
D. Dilute hydrochloric acid react with copper to produce hydrogen gas but dilute sulphuric acid do not react.
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A. Dilute sulphuric acid react with copper to produce hydrogen gas but dilute hydrocholoric acid do not react.
[CTET Feb 2016]
C. Zinc is one of the noble metals.
D. Zinc appears below copper in reactivity series.
Select the correct reason(s) from the reasons given by Class VIII students.
1. Only B.
2. A and D.
3. Only A.
4. C and D.
[CTET June 2011]
Q.15. The inner surfaces of food cans are coated with tin and not with zinc because
A. zinc is costlier than tin.
B. zinc is more reactive than tin.
C. zinc has a higher melting point than tin.
D. zinc is less reactive than tin.
[CTET Sep 2015]
[CTET 2011]
Q.17.When an iron nail is dipped in copper sulphate solution, the colour of copper sulphate solution fades and a brownish layer is deposited over the iron nail. This is an example of
A. Combination reaction.
B. Decomposition reaction.
C. Double displacement reaction.
D. Displacement and redox reaction.
[CTET 2012]
Q.18. Phosphorous is kept in water to
A. Purify water.
B. Make water soft.
C. prevent its contact with oxygen.
D. denature it.
[CTET Sep 2014]
Q.19. Select the group of poor conductor of heat from the following:
A. Air, Water and Plastic.
B. Wool, wood and iron.
C. Water, Copper and Wood.
D. Air, Aluminium and Wool.
[CTET 2016]
Q.20. "Sodium and Potassium are stored in Kerosene. Give the reason.". Following reasons are given by VIII Class students.
A. Both are highly reactive and react with carbon dioxide in the atmosphere.
B. Both are highly toxic and give off toxic fumes.
C. Both are highly reactive and react with oxygen in atmosphere.
D. Kerosene helps cut off the reaction of the metals with oxygen in the air.
Select the most appropriate reason(s) given by class VIII students.
1. Only A
2. C & D
3. only B
4. C & B
[CTET Sep 2016]
Q.21. Match the following metals and non metals with their uses:
(a) Iodine (i) Water purification.
(b) Mercury (ii) On wounds
(c) Aluminium (iii) Thermometers.
(d) Chlorine (iv) Food Packaging
A. a-iv, b-ii, c-iii, d-i.
B. a-i, b-ii, c-iii, d--iv.
C. a-ii, b-iii, c-iv, d-i
D a-iii, b-ii, c-iv, d-i
Q.14. "Copper cannot displace zinc from its salt solution. Give the reason." The following reasons are given by class VIII students:
A. Copper is more reactive than zinc.
B. Copper is less reactive than zinc.C. Zinc is one of the noble metals.
D. Zinc appears below copper in reactivity series.
Select the correct reason(s) from the reasons given by Class VIII students.
1. Only B.
2. A and D.
3. Only A.
4. C and D.
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B. Copper is less reactive than zinc.
Q.15. The inner surfaces of food cans are coated with tin and not with zinc because
A. zinc is costlier than tin.
B. zinc is more reactive than tin.
C. zinc has a higher melting point than tin.
D. zinc is less reactive than tin.
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B. zinc is more reactive than tin.
[CTET Sep 2015]
Q.16. Anita prepared a fresh solution of sodium hydroxide in a test tube. She dropped a small piece of aluminium foil into it and then brought a burning match stick near the mouth of the test tube. She hears a pop sound. The pop sound indicates the presence of:
A. Water gas.
B. Oxygen gas.
C. Hydrogen gas.
D. Aluminium gas.
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C. Hydrogen gas.
Q.17.When an iron nail is dipped in copper sulphate solution, the colour of copper sulphate solution fades and a brownish layer is deposited over the iron nail. This is an example of
A. Combination reaction.
B. Decomposition reaction.
C. Double displacement reaction.
D. Displacement and redox reaction.
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D. Displacement and redox reaction.
Q.18. Phosphorous is kept in water to
A. Purify water.
B. Make water soft.
C. prevent its contact with oxygen.
D. denature it.
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C. prevent its contact with oxygen.
[CTET Sep 2014]
A. Air, Water and Plastic.
B. Wool, wood and iron.
C. Water, Copper and Wood.
D. Air, Aluminium and Wool.
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A. Air, Water and Plastic.
[CTET 2016]
A. Both are highly reactive and react with carbon dioxide in the atmosphere.
B. Both are highly toxic and give off toxic fumes.
C. Both are highly reactive and react with oxygen in atmosphere.
D. Kerosene helps cut off the reaction of the metals with oxygen in the air.
Select the most appropriate reason(s) given by class VIII students.
1. Only A
2. C & D
3. only B
4. C & B
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2. C & D
Q.21. Match the following metals and non metals with their uses:
(a) Iodine (i) Water purification.
(b) Mercury (ii) On wounds
(c) Aluminium (iii) Thermometers.
(d) Chlorine (iv) Food Packaging
A. a-iv, b-ii, c-iii, d-i.
B. a-i, b-ii, c-iii, d--iv.
C. a-ii, b-iii, c-iv, d-i
D a-iii, b-ii, c-iv, d-i
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C. a-ii, b-iii, c-iv, d-i
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