Chemical Reactions and Equation (CBSE (Central Board of Secondary Education- Board Exam) Class-10 Science): Questions 67 - 77 of 102

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Question number: 67

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

Short Answer Question▾

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What is respiration in human beings?

Question number: 68

» Chemical Reactions and Equation » Chemical Equations » Writing a Chemical Equation

» Chemical Reactions and Equation » Types of Chemical Reactions » Combination Reaction

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Explain why the marble statues often get corroded slowly when kept in open for a long time?

Question number: 69

» Chemical Reactions and Equation » Types of Chemical Reactions » Combination Reaction

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Name the key ingredient required in the manufacturing of cement?

Question number: 70

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

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Write down the reaction for decomposition of ferrous sulphate?

Question number: 71

» Chemical Reactions and Equation » Types of Chemical Reactions » Double Displacement Reaction

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What is double displacement reaction?

Question number: 72

» Chemical Reactions and Equation » Chemical Equations » Writing a Chemical Equation

» Chemical Reactions and Equation » Chemical Equations » Writing Symbols of Physical States

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What does the symbol (g) used with water represents?

Question number: 73

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

Essay Question▾

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Write a note on process of corrosion?

Explanation

… (136 more words) …

Question number: 74

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

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What is the process of corrosion?

Question number: 75

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

MCQ▾

Question

Slow destruction of metal due to their interaction with the environment is called as:

Choices

Choice (4) Response

a.

Decomposition

b.

Precipitation

c.

Rancidity

d.

Corrosion

Question number: 76

» Chemical Reactions and Equation » Chemical Equations » Writing Symbols of Physical States

MCQ▾

Question

The chemical reactions in which heat is absorbed are called as:

Choices

Choice (4) Response

a.

Endothermic reactions

b.

Reactions with –Heat term on product side

c.

Both a. and b. are correct

d.

None of the above

Question number: 77

» Chemical Reactions and Equation » Chemical Equations » Writing Symbols of Physical States

MCQ▾

Question

Concentration of the reactants is denoted by the:

Choices

Choice (4) Response

a.

dil. (for dilute)

b.

Conc. (for concentration)

c.

Fast or slow

d.

Both a. and b. are correct

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