Why Solve Sample Paper?
By solving sample papers of science you are enhancing
your speed to solve the precious time consumed by lengthy questions.
By solving question papers of class 10 science you can
expert any chapter and concept of science.
I have given 14 questions in this sample paper for you. I
hope you love the Sample Paper For Class 10 Science Chapter 1 by NCERT Class 10.
Sample Paper For Class 10 Science Chemical Reactions And Equations
1. Match the following from Column A with their correct
responses in Column B.'
Column A
(i) Combination reaction
(ii) Decompostion reaction
(iii) Displacement reaction
(iv) Redox reaction
Column B
(a) ZnO + C -> Zn + CO
(b) 2H2O -> 2H2 + O2
(c) 2Mg + O2 -> 2MgO
(d) Fe + CuSO4 -> FeSO4 + Cu
2. The Chemical formula of lead sulphate is
(i) Pb2SO4
(ii) PbSO4
(iii) Pb2(SO4)3
(iv) Pb(SO4)2
3. The colour of zinc metal is
(i) Reddish brown
(ii) Silvery
(iii) White
(iv) Grey
4. When you place an iron nail in copper sulphate
solution, the reddish brown coating formed on the nail is
(i) Smooth and shinny
(ii) Rough and granule
(iii) Soft and dull
(iv) Hard and flaky
5. Why oil and fat containing food is flushed with nitrogen?
6. What happens when copper powder is heated?
7. What is the principle of balancing of chemical equation?
8. What is the reason behind the packing of food itmes in aluminium foil?
9. Predict whether gold can displace copper from copper
sulphate solution.
10. What do you mean by term exothermic and endothermic
reactions? Give two example each.
11. What is double displacement reaction?
12. In the reaction PbS + 4H2O -> PbSO4 + 4H2O, which
is oxidising agent and which is reducing agent?
13. Write the formula and then balance the following
equations.
(i) Butane + Oxygen -> Carbon dioxide + Water
(ii) Magnesium + Silver nitrate -> Magnesium nitrate +
Silver
(iii) Lime water + Carbon dioxide -> Calcium carbonate
+ Water
(iv) Sodium + Water -> sodium hydroxide + hydrogen
(v) calcium carbonate + water + Carbon dioxide ->
Calcium bicarbonate
14. There are different types of chemical reactions
occurring around us or being carried out for the benefit of mankind, e.g.
combinaion reactions, decomposition reactions, displacement reactions,
precipitation reactions, redox reactions, photochemical reactions etc.
(i) Combustion of coke is a combination reaction. CO2 is
not a pollutant. Then why is combustion of coke harmful?
(ii) Which reaction followed by two combination reactions
are involved in white whashing of walls?
(iii) From daily life, give one use of tin plating.
(iv) How photochemical reaction have played an important
role in photography?
Conclusion
If you want answer of this sample paper, don't worry, you
can comment down below I will add answer in 24 hours.
If you love the above sample paper you should check out
the website NCERT Class 10 for study material for class 10.
I hope you love the sample paper.
0 Comments