General Science Class 10

An agreement between a measured value and the accepted true value?

1. Error
2. Accuracy
3. Precision
4. All of these

Spectroscopy is the interaction of light with :

1. Liquid
2. Solid
3. Gas
4. Matter

The Gas is mobile phase in :

1. Liquid chromatography
2. Solid chromatography
3. Gas chromatography
4. None of these

It used to assess concentration or amount of given atomic, molecular or ionic chemical?

1. Chromatography
2. Conductometry
3. Spectroscopy
4. Potentiometry

Soap is the term for a salts of a :

1. Carboxylic acid
2. Citric acid
3. Sulphuric acid
4. Fatty acid

Surfactants reduce the ______ of water.

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

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