Acids, Bases and Salts (CBSE (Central Board of Secondary Education- Board Exam) Class-10 Science): Questions 39 - 45 of 65

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 167 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 39

» Acids, Bases and Salts » Chemical Properties of Acids and Bases » Acids and Bases in the Laboratory

Short Answer Question▾

Write in Short

Write down a note on properties of bases?

Question number: 40

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » pH Scale

Short Answer Question▾

Write in Short

What are olfactory indicators?

Question number: 41

» Acids, Bases and Salts » Chemical Properties of Acids and Bases » Acids and Bases in the Laboratory

One Liner Question▾

Write in Brief

In a first aid manual it was suggested that vinegar should be used to treat wasp sting and baking soda for bee stings.

(i) What does this information tell you about the chemical nature of the wasp stings

(ii) If there were no baking soda in the house, what other household substance could you use to treat bee stings?

Question number: 42

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Acid or a Base in a Water Solution

Short Answer Question▾

Write in Short

Sneha and Shivam want to prepare dilute H2SO4. Sneha added concentrated H2SO4 to water slowly with constant stirring& cooling whereas, Shivam added water to concentrated H2SO4. Name the student who was correct and why?

Question number: 43

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Acid or a Base in a Water Solution

Short Answer Question▾

Write in Short

Write a note on, addition of acids and bases into water. What precautions to be taken and why?

Question number: 44

» Acids, Bases and Salts » Salts » Chemicals From Common Salt

MCQ▾

Question

Common salt acts as a raw material for number of chemicals such as:

Choices

Choice (4) Response

a.

Sodium carbonate

AND

Sodium Hydrogen carbonate

b.

Sodium Hydroxide

c.

Bleaching Powder

d.

All a. , b. and c. are correct

Question number: 45

» Acids, Bases and Salts » Chemical Properties of Acids and Bases » Reaction of Metallic Oxides With Acids

MCQ▾

Question

When dilute Hydrochloric acid added to copper oxide in a beaker:

Choices

Choice (4) Response

a.

Copper oxide dissolves

b.

Colour of solution becomes blue green

c.

Copper II chloride formed in reaction

d.

All a. , b. and c. are correct

f Page
Sign In