Chemistry Class 10th MCQs

When the magnitude of Kc is small, indicates:

1. Reaction mixture contain most of the reactant
2. Reaction mixture contain most of the product
3. Reaction mixture contain almost equal amount of reactant and product
4. Reaction goes to completion

Surfactants reduce the ______ of water:

1. Viscosity
2. Surface tension
3. Boiling point
4. Melting Point

If pH value is greater than 7, then solution is:

1. Acidic
2. Basic
3. Amphoteric
4. Neutral

The carboxylate end of the soap molecule that is attracted to water is called:

1. Hydrophobic end
2. End point
3. Hydrophilic end
4. None

The use of potassium hydroxide produced a:

1. Hard soap
2. Soft soap
3. Moderate soap
4. All of these

The citric acid is used in preparation of cold drinks for:

1. Sweet taste
2. Bitter taste
3. Sour taste
4. Salty taste

The centrifuge machine used for separation of:

1. Juice
2. pH
3. Mud
4. Crystal

The abrasives are:

1. Water
2. Water insoluble minerals
3. Water semi soluble minerals
4. Water absorving minerals

The harvesting is most important step of:

1. Preparation of soap
2. Preparation of cold drinks
3. Preparation of sugar
4. Preparation of medicines

Which of the following is used as jet fuel:

1. Kerosene oil
2. Fuel oil
3. Petrol
4. Diesel oil

Which one of the following is not a fraction of crude oil:

1. Petroleum coke
2. Ammonia
3. Fuel oil
4. Paraffin wax

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