Types of Chemical Reactions Flash Cards

Unit 10 > Science > Class 10 > Samacheer Kalvi - English Medium

29 cards in this set.

Mode

H2(g) + Cl29(g)--------> 2HCl(g) is a

b. Combination Reaction

Photolysis is a decomposition reaction caused by ___________

c. light

A reaction between carbon and oxygen is represented by C(s) + O2(g) -------> CO2(g) + Heat. In which of the type(s), the above reaction can be classified? (i) Combination Reaction (ii) Combustion Reaction (iii) Decomposition Reaction (iv) Irreversible Reaction

d. i, ii and iv

The chemical equation Na2 SO4(aq) + BaCl2(aq) -----------> BaSO4(s) + 2NaCl(aq) represents which of the following types of reaction?

c. Precipitation

Which of the following statements are correct about a chemical equilibrium? (i) It is dynamic in nature (ii) The rate of the forward and backward reactions are equal at equilibrium (iii) Irreversible reactions do not attain chemical equilibrium (iv) The concentration of reactants and products may be different

a. i, ii and iii

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.

d. i and iv

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

c. 2CO(g) + O2(g)-----> 2CO2(g)

Which of the following represents a precipitation reaction?

c. A(aq) + B(aq) -------> C(s) + D(aq)

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

c. 1*10^-11 M

Powdered CaCO3 reacts more rapidly than flaky CaCO3 because of ___________.

a. large surface area

A reaction between an acid and a base is called _________________.

Neutrilization

When lithium metal is placed in hydrochloric acid, ________ gas is evolved

Hydrogen

The equilibrium attained during the melting of ice is known as ___________.

Physical equilibrium

The pH of a fruit juice is 5.6. If you add slaked lime to this juice, its pH _____________ (increse/decrese)

Increases

The value of ionic product of water at 250 C is _____________.

1*10^-14

The normal pH of human blood is _________

7.35-7.45

Electrolysis is type of _______________ reaction

decomposition

The number of products formed in a synthesis reaction is _________

one

Chemical volcano is an example for _______________ type of reaction

decomposition

The ion formed by dissolution of H+ in water is called _______________

Hydronium ion

NH4OH(aq) + CH3COOH(aq) ---> CH3COONH4(aq) + H2O(l)

Neutralization

Zn(s) + CuSO4(aq) ----> ZnSO4(aq) + Cu(s)

Single displacement

ZnCO3(s) +heat ----> ZnO(s) + CO2(g)

Thermal decompostion

C2H4(g) + 4O2(g) ----> 2CO2(g) + 2H2O(g) + Heat

Combustion

Silver metal can displace hydrogen gas from nitric acid.

FALSE (Silver metal cannot displace hydrogen gas from nitric acid.)

The pH of rain water containing dissolved gases like SO3, CO2, NO2 will be less than 7.

TRUE

At the equilibrium of a reversible reaction, the concentration of the reactants and the products will be equal.

FALSE (At the equilibrium of a reversible reaction, there is no change in the concentration of the reactants and the products.)

Periodical removal of one of the products of a reversible reaction increases the yield.

TRUE

On dipping a pH paper in a solution, it turns into yellow. Then the solution is basic.

FALSE (On dipping a pH paper in a solution, it turns into yellow. Then the solution is natural.)

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Types of Chemical Reactions Flash Cards

Unit 10 > Science > Class 10 > Samacheer Kalvi - English Medium

29 cards in this set.

Mode Memorize Learn

H2(g) + Cl29(g)--------> 2HCl(g) is a

b. Combination Reaction

Photolysis is a decomposition reaction caused by ___________

c. light

A reaction between carbon and oxygen is represented by C(s) + O2(g) -------> CO2(g) + Heat. In which of the type(s), the above reaction can be classified? (i) Combination Reaction (ii) Combustion Reaction (iii) Decomposition Reaction (iv) Irreversible Reaction

d. i, ii and iv

The chemical equation Na2 SO4(aq) + BaCl2(aq) -----------> BaSO4(s) + 2NaCl(aq) represents which of the following types of reaction?

c. Precipitation

a. i, ii and iii

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.

d. i and iv

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

c. 2CO(g) + O2(g)-----> 2CO2(g)

Which of the following represents a precipitation reaction?

c. A(aq) + B(aq) -------> C(s) + D(aq)

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

c. 1*10^-11 M

Powdered CaCO3 reacts more rapidly than flaky CaCO3 because of ___________.

a. large surface area

A reaction between an acid and a base is called _________________.

Neutrilization

When lithium metal is placed in hydrochloric acid, ________ gas is evolved

Hydrogen

The equilibrium attained during the melting of ice is known as ___________.

Physical equilibrium

The pH of a fruit juice is 5.6. If you add slaked lime to this juice, its pH _____________ (increse/decrese)

Increases

The value of ionic product of water at 250 C is _____________.

1*10^-14

The normal pH of human blood is _________

7.35-7.45

Electrolysis is type of _______________ reaction

decomposition

The number of products formed in a synthesis reaction is _________

one

Chemical volcano is an example for _______________ type of reaction

decomposition

The ion formed by dissolution of H+ in water is called _______________

Hydronium ion

NH4OH(aq) + CH3COOH(aq) ---> CH3COONH4(aq) + H2O(l)

Neutralization

Zn(s) + CuSO4(aq) ----> ZnSO4(aq) + Cu(s)

Single displacement

ZnCO3(s) +heat ----> ZnO(s) + CO2(g)

Thermal decompostion

C2H4(g) + 4O2(g) ----> 2CO2(g) + 2H2O(g) + Heat

Combustion

Silver metal can displace hydrogen gas from nitric acid.

FALSE (Silver metal cannot displace hydrogen gas from nitric acid.)

The pH of rain water containing dissolved gases like SO3, CO2, NO2 will be less than 7.

TRUE

At the equilibrium of a reversible reaction, the concentration of the reactants and the products will be equal.

FALSE (At the equilibrium of a reversible reaction, there is no change in the concentration of the reactants and the products.)

Periodical removal of one of the products of a reversible reaction increases the yield.

TRUE

On dipping a pH paper in a solution, it turns into yellow. Then the solution is basic.

FALSE (On dipping a pH paper in a solution, it turns into yellow. Then the solution is natural.)

Mode