Chemistry Test - 67

Mixtures are combination of two or more substances physically which can be separated in to the original.

Matter can be breakdown into two categories.

1) Pure substances

2) Mixtures

Here in the given options, options A, B, C are pure substances as they are indicated as S & L in brackets. Option D) is an aqueous solution, that can be dissolved in water.

'Minamata' disease was caused by Mercury.

The monomeric unit of orlon polymer is Acrylonitrile. Orlon is also known as Polyacrylonitrile (PAN).

Avogadro's law directly expalins the law of coservation of mass.

The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.

Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

Monosaccharides, also called simple sugars, are the most basic units of carbohydrates. They are fundamental units of carbohydrates and cannot be further hydrolyzed to simpler compounds.

Hence, Monosaccharides can be classified according to the spatial arrangement of their atoms is true about Monosaccharides.

The first indication that a stable nucleus can be broken down was afforded by Rutherford.

The substances that are composed of to or more different elements in fixed proportion by mass are calledcompound.

In isotopes the number of neutrons are different.