GENERAL SCIENCE CLASS 8 MCQS

A substance which produces hydrogen ion (H+) in the aqueous solution is called:

1. Base
2. Acid
3. Oxidizing agent
4. Reducing agent

A substance which produces hydroxyl ion (OH)- in the aqueous solution is called:

1. Oxidizing agent
2. Reducing agent
3. Base
4. Acid

The resulting solution is neither acidic nor basic neutral. This process is called:

1. Ionization
2. Oxidation
3. Decomposition
4. Neutralization

The reaction in which an acid and a base react to form salt and water only is known as ____ reaction:

1. Neutralization
2. Ionization
3. Oxidation
4. Decomposition

The soapy touching property of substance are known as:

1. Acids
2. Bases
3. Salts
4. Oxides

Tartaric Acid is found in:

1. Orange and Mango
2. Lemon and Apple
3. Tamarind and Grapes
4. All of these

Some fruits like mango, lemon, raw grapes, oranges, etc have a sour taste to the presence of:

1. Tartaric acid
2. Malic acid
3. Oxalic acid
4. Citric acid

Lactic Acid is found in:

1. Yogurt
2. Milk
3. Butter
4. Ice Cream

Ascorbic Acid is found in:

1. Mangoes and Grapes
2. Alma and Citrus Fruits
3. Bananas and Apples
4. Pineapples and Watermelon

Which of the following would be most useful in testing if a substance is either an acid or a base:

1. pH indicator strips
2. Acid-base indicator
3. Litmus paper
4. Filter paper