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Published on: 05/12/2020
Create and posted Types of Chemical Reactions English Medium Free Online Test 1 Mark Questions 2020-2021
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Chemically rust is
hydrated ferrous oxide
Ferrous oxide
hydrated ferric oxide
Ferric oxide
2.
The value of ionic product of water at 25°C is ____________
1.00 x 1014
1.00 x 10-14
1.00 X 104
1.00 X 10-4
3.
Pb(NO3)2 + 2KI ⟶ Pbl2 + 2KNO3 is a ______________ reaction
neutralization
Precipitation
decomposition
Combustion
4.
Pick out the metal that displaces hydrogen from hydrochloric acid.
Zinc
Silver
Copper
Gold
5.
Formation of ammonia from nitrogen and hydrogen is an example of __________ reaction.
Thermal decomposition
Combination
Precipitation
Displacement
6.
Which among the following chemical reaction is an example of combination reaction?
(i) H2(g)+ CI2(g) ⟶ 2HCI(g)
(ii) AnOH(aq) + HCl(aq) ⟶ NaCl(aq) + H2O(1)
(iii)2Mg(S)+ O2(g) ⟶ 2MgO(S)
(iv) Zn(S)+ 2HCI(aq) ⟶ ZnCl2 + H2(g)
only (i)
both (i) and (iii)
only (iii)
both (i) and (ii)
7.
8.
9.
A single displacement reaction is represented by X(s) + 2HCl(aq) → XCl2(aq) + H2(g). Which of the following(s) could be X. (i) Zn (ii) Ag (iii) Cu (iv) Mg. Choose the best pair.
i and ii
ii and iii
iii and iv
i and iv
10.
Photolysis is a decomposition reaction caused by __________
heat
electricity
light
mechanical energy
1.
(c)
hydrated ferric oxide
2.
(b)
1.00 x 10-14
3.
(b)
Precipitation
4.
(a)
Zinc
5.
(b)
Combination
6.
(b)
both (i) and (iii)
7.
(d)
8.
(c)
9.
(d)
i and iv
10.
(c)
light
10th Standard Syllabus & Materials
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
