TN State Board Samacheer Kalvi Online Test for 10th Std - Science - English - Types of Chemical Reactions

Question 1 Of 10

The chemical equation

Neutralisation Combustion Precipitation le displacement

Question 2 Of 10

Which of the following statements are correct about a chemical equilibrium?

i, ii and iii i, ii and iv ii, iii and iv ii and iv

Question 3 Of 10

Photolysis is a decomposition reaction caused by.

heat electricity light anical energy

Question 4 Of 10

The pH of a solution is 3. Its [OH–] concentration is

1 × 10–3 M 3 M 1 × 10–11 M 11 M

Question 5 Of 10

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

Question 6 Of 10

Which of the following is not an “element + element → compound” type reaction?

C(s) + O2(g) → CO2(g) 2K(s) + Br2(l) → 2KBr(s) 2CO(g) + O2(g) → 2CO2(g) s) + 3O2(g) → 2Fe2O3(s)

Question 7 Of 10

H2(g) + Cl2(g) → 2HCl(g) is a

Decomposition Reaction Combination Reaction Single Displacement Reaction le Displacement Reaction

Question 8 Of 10

A reaction between carbon and oxygen is represented by(s) + O2(g) → CO2(g) + Heat. In which of the type(s), the above reaction can be classified?

i and ii i and iv i, ii and iii i, and iv

Question 9 Of 10

Powdered CaCO3 reacts more rapidly than flaky CaCO3 because of.

large surface area high-pressure high concentration temperature

Question 10 Of 10

Which of the following represents a precipitation

A(s) + B(s) → C(s) + D(s) A(s) + B(aq) → C(aq) + D(l) A(aq) + B(aq) → C(s) + D(aq) A(aq) + B(s) → C(aq) + D(l)

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 10th Standard Science - English Medium - Types of Chemical Reactions

Samacheer Kalvi 10th Science - Types of Chemical Reactions - Book Back Questions in English Medium