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Olympiad Test: Acids Bases & Salts - CTET & State TET MCQ


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20 Questions MCQ Test NCERT Textbooks (Class 6 to Class 12) - Olympiad Test: Acids Bases & Salts

Olympiad Test: Acids Bases & Salts for CTET & State TET 2024 is part of NCERT Textbooks (Class 6 to Class 12) preparation. The Olympiad Test: Acids Bases & Salts questions and answers have been prepared according to the CTET & State TET exam syllabus.The Olympiad Test: Acids Bases & Salts MCQs are made for CTET & State TET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Acids Bases & Salts below.
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Olympiad Test: Acids Bases & Salts - Question 1

What is the chemical nature of substances that taste sour and are corrosive in nature?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 1

Substances that taste sour and are corrosive in nature are called acids. The chemical nature of such substances is known as acidic.

Olympiad Test: Acids Bases & Salts - Question 2

Which synthetic indicator is commonly used to test the acidic or basic nature of a substance?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 2

Phenolphthalein is a synthetic indicator commonly used in laboratories to test the acidic or basic nature of a substance. It changes color based on the pH of the solution.

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Olympiad Test: Acids Bases & Salts - Question 3

What is the color change of red litmus paper when dipped in a basic solution?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 3

Red litmus paper turns blue when dipped in a basic solution, indicating the basic nature of the substance.

Olympiad Test: Acids Bases & Salts - Question 4

Which of the following is a strong Base?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 4

Sodium hydroxide is a strong base and highly corrosive in nature.

Olympiad Test: Acids Bases & Salts - Question 5

Sour things contain

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 5

Sour things contain acids. All organic acid obtained from plants and animals are sour in taste. Mineral acids should not be tasted.

Olympiad Test: Acids Bases & Salts - Question 6

What is the chemical name of common salt formed during the neutralization of sodium hydroxide and hydrochloric acid?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 6

Common salt formed during the neutralization of sodium hydroxide and hydrochloric acid is chemically known as Sodium Chloride.

Olympiad Test: Acids Bases & Salts - Question 7

What is the result of the neutralization reaction between hydrochloric acid and sodium hydroxide?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 7

In the neutralization reaction between hydrochloric acid and sodium hydroxide, water is formed along with the salt (sodium chloride).

Olympiad Test: Acids Bases & Salts - Question 8

Why is neutralization considered an exothermic reaction?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 8

 

Neutralization reactions are exothermic because they release heat during the formation of the neutral solution.

Olympiad Test: Acids Bases & Salts - Question 9

Turmeric stains turns into ___________ when washed with soap.

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 9

Turmeric strains on clothes turn into red when washed with soap. Soap is basic in nature and reacts with turmeric to give red colour in presence of water.

Olympiad Test: Acids Bases & Salts - Question 10

How does milk of magnesia provide relief from indigestion?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 10

Milk of magnesia, being a base, neutralizes excess hydrochloric acid in the stomach, providing relief from indigestion.

Olympiad Test: Acids Bases & Salts - Question 11

The reaction in which an acid react with a base to form salt and water is called as

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 11

The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water.

Olympiad Test: Acids Bases & Salts - Question 12

Which of the following in not a natural indicator?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 12

Indicators are substances that give different colour with acid and base. Litmus, turmeric and rose petals are natural indicators while phenolphthalein is a artificial indicator.

Olympiad Test: Acids Bases & Salts - Question 13

Vitamin C is the another name of

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 13

Vitamin C is also known as ascorbic acid. It is a water-soluble vitamin that is necessary for normal growth and development. It is an antioxidant that helps maintain skin, blood vessels, bones and cartilage. It's also known to boost your immune system.

Tartaric acid, Citric acid, and Acetic acid are different types of acids and are not associated with Vitamin C. Tartaric acid is commonly found in grapes and bananas, Citric acid is naturally present in citrus fruits, and Acetic acid is a key component in vinegar.

The correct answer is Ascorbic acid.

 

Olympiad Test: Acids Bases & Salts - Question 14

Which base is commonly used to treat acidic soil?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 14

Acidic soil is treated with bases like slaked lime (calcium hydroxide) to neutralize its acidic nature.

Olympiad Test: Acids Bases & Salts - Question 15

What is the role of bases in treating factory wastes?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 15

Bases are used to neutralize acidic wastes in factories before disposal, preventing harm to aquatic organisms.

Olympiad Test: Acids Bases & Salts - Question 16

The word acid comes from Latin word “acere” which means

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 16

The word acid comes from Latin word acere which means Sour. Acids are sour in taste.

Olympiad Test: Acids Bases & Salts - Question 17

Why does rubbing baking soda over the skin provide relief from ant or bee stings?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 17

Baking soda, being a base, neutralizes the formic acid injected by ants or bees, providing relief from the pain of the sting.

Olympiad Test: Acids Bases & Salts - Question 18

Which natural indicator is extracted from Lichens and comes in the form of strips of two colors - blue and red?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 18

Litmus is extracted from Lichens and comes in the form of strips of two colors - blue litmus paper and red litmus paper.

Olympiad Test: Acids Bases & Salts - Question 19

The found in bites and strings of insect is

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 19

Formic acid is found in bites of strings of insect which cause burning sensation at the site of bite.

Olympiad Test: Acids Bases & Salts - Question 20

What is the color change of turmeric paper when dipped into a basic solution?

Detailed Solution for Olympiad Test: Acids Bases & Salts - Question 20

Turmeric paper turns Red when dipped into a basic solution, indicating the basic nature of the substance.

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