Chemistry GK · all questions

Acid, Base and Salts
practice.

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Q141

The useful element in photography is

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Q142

Tartaric acid is not found in

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Q143

Which of the following solutions is alkaline?

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Q144

Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H⁺ ions. for example HCl, H2SO₄, HNO₃
2. A weak acid that is partially ionized in water produces small amounts of H⁺ ions. for example - CH₃COOH, H₂CO₃, H₂SO₃

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Q145

Which of the following gases in the atmosphere is/are responsible for acid rains?
1. Oxides of sulphur
2. Oxides of nitrogen
3. Oxides of carbon
Select the correct answer:

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Q146

When the pH value increases from 7 to 14, it shows that-

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Q147

Carboxylic acid group can be detected by

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Q148

pH value shows the numeric value of

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Q149

The pH of . . . . . . . . cannot be detected by direct use of pH paper . . . . . . . .

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Q150

As a dehydrating agent to convert ethanol to ethane . . . . . . . . is used.

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Q151

Curd is sour due to the presence of

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Q152

Which of the following properties is true for a tooth paste?

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Q153

Which of the following acid do not contain Oxygen?

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Q154

The pH of water at 25°C is 7. When it is heated to 100°C, the pH of water

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Q155

What is the chemical formula of common salt?

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Q156

Which of the following statements is true/false?
1. An alkali that is completely ionized in water produces a large number of OH^- ions. For example NaOH, KOH
2. An alkali that is partially ionized in water produces a large number of OH⁺ ions. For example KOH

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Q157

Which one of the following is correct? Due to continuous use of calcium superphosphate as fertiliser in soil, the pH of soil increases or decreases.

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Q158

Sour taste of 'Coca cola' is due to the presence of

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Q159

Which of the following is correct regarding buffer solution?

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Q160

Whose chemical formula is NaCl?

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