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Test: Acids Bases & Salts


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10 Questions MCQ Test Science & Technology for UPSC CSE | Test: Acids Bases & Salts

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Test: Acids Bases & Salts - Question 1

Acid turns blue litmus:

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

Litmus paper is used as an indicator to check acids and bases. Acids turn blue litmus red.

Test: Acids Bases & Salts - Question 2

Which of the following is a strong acid?

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

Sulphuric acid is a strong acid because it is a mineral acid and dissociates completely into ions. It gives more H+ ions than the rest of the acids.

Test: Acids Bases & Salts - Question 3

Which gas is released when acid reacts with metals?

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

Hydrogen gas is formed as the metal reacts with the acid to form a salt. Many, but not all, metals react with acids.

Test: Acids Bases & Salts - Question 4

Acid present in soured curd is:

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

Lactic Acid is present in sour milk or curd. The increased acidity causes the milk proteins (casein) to tangle into strong masses or curds.

Test: Acids Bases & Salts - Question 5

Which of the following is a natural indicator?

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

Turmeric is a natural acid-base indicator. It turns yellow in an acidic medium and changes its colour to red in a basic medium.

Test: Acids Bases & Salts - Question 6

Which of the following acid is present in Tomato?

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

The most abundant acid in tomatoes is citric acid, slightly less acidic than vinegar. Your body depends on citric acid to produce energy. Citric acid can help to prevent future stones from forming.
There are ten different acids in tomatoes, but the largest part is citric acid and malic acid. As the tomato ripens with malic acid decreasing and citric acid increasing. energy.

Test: Acids Bases & Salts - Question 7

In case of indigestion, we use:

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

In case of indigestion, we use antacids. Antacids containing bases reacts with acids present in stomach to neutralise it.

Test: Acids Bases & Salts - Question 8

All acids contain:

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

All acids contain hydrogen in common. When acids is mixed in water hydrogen ion is produced.

Test: Acids Bases & Salts - Question 9

The reaction between acid and base to form salt is called ______.

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

A neutralization reaction is a chemical reaction in which an acid and base quantitatively react together to form salt and water as products.
Acid + Base → Salt + Water

Test: Acids Bases & Salts - Question 10

Which of the following does not form an acidic salt?

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

Carbonic acid is a weak acid.

  • Strong acids make acidic salts with weak bases and neutral salts with strong bases.
  • Weak acids make basic salts with strong bases and neutral with weak bases.
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