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- 1. Multiple Choice
A substance which oxidises itself and reduces other is
known as -
oxidising agent
reducing agent
both of these
none of these
- 2. Multiple Choice
When hydrogen sulphide gas is passed through a blue
solution of copper sulphate, a black precipitate of
copper sulphide is obtained and the sulphuric acid so
formed remains in the solution. The reaction is an
example of-
a combination reaction
a displacement reaction
a decomposition reaction
a double displacement reaction
- 3. Multiple Choice
What happens when copper rod is dipped in iron
sulphate solution?
Copper displaces iron
Blue colour of copper sulphate solution is obtained
No reaction takes place
Reaction is exothermic
- 4. Multiple Choice
A balanced chemical equation is in accordance with-
Avogadro’s law
law of multiple proportion
law of conservation of mass
law of gaseous volumes
- 5. Multiple Choice
A redox reaction is one in which-
both the substance are reduced
both the substance are oxidised
an acid is neutralised by the base
one substance is oxidised while the other is reduced
- 6. Multiple Choice
Answer The question asked in image.
a catalyst
an oxidising agent
a reducing agent
a dehydrating agent
- 7. Multiple Choice
(a)
(b)
(c)
(d)
- 8. Multiple Choice
A reddish brown coloured metal used in electric wires,
when powdered and heated strongly in an open China
dish, its colour turns black. When hydrogen gas is
passed over this black substances, it regain its original
colour. Based on this information, the metal and black
coloured substances are
copper and copper nitrate
silver and silver oxide
copper and copper oxide
aluminium and aluminium oxide
- 9. Multiple Choice
It is a decomposition reaction and endothermic in
nature.
It is a combination reaction.
It is a decomposition reaction and accompanied
by the release of heat.
It is a photochemical decomposition reaction and
exothermic in nature.
- 10. Multiple Choice
True or False: Neutralization reaction is a type of Double Displacement Reaction.
True
False
- 11. Fill in the Blank
The digestion of food in the body is an example of
......... reaction.
- 12. Multiple Choice
True or False: Oxidation is the loss of electrons from a substance.
True
False
- 13. Fill in the Blank
............... of metals and non-metals governs all the displacement reactions.
- 14. Multiple Choice
True or False: Hydrogen Peroxide/H2O2 is stored in .................... .
Transparent Bottles or containers
Translucent Bottles or containers
Coloured Bottles or containers
- 15. Multiple Choice
True Or False: All double displacement reaction produce a precipitate.
True
False
- 16. Multiple Choice
What type of chemical reactions sometimes take place when electricity is passed through water?
Displacement
Combination
Decomposition
Double displacement
- 17. Multiple Choice
Silver when exposed to air attain a blackish layer on it. The black substance is ...................... .
Silver Chloride
Silver Oxide
Silver Bromide
Silver Sulphide
- 18. Multiple Choice
True or False: The process of adding water to calcium oxide to make calcium hydroxide is a exothermic process.
True
False
- 19. Multiple Choice
When ferrous sulphate is heated strongly it undergoes thermal decomposition reaction to produce ................... .
Ferric Oxide, Sulphur Dioxide
Ferrous Oxide, Sulphur Dioxide, Sulphur trioxide
Ferric Oxide, Sulphur Dioxide, Sulphur Trioxide
Ferrous Oxide, Sulphur Trioxide
- 20. Multiple Choice
When we drop some zinc granules in copper sulphate solution, the colour of solution changes from blue to ................
White
Green
Colourless
Violet
- 21. Poll
Do you think this year's Chemistry's syllabus is easy and everyone can score good marks in Chemistry?
Yes
No
At least I can score good marks
At least I cannot score good marks
Maybe
- 22. Poll
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