Chemistry Quiz 6

Mass number of an elements represents

Sodium Thiosulphate is used in photography. Its main role in photographic process is due to 

Natural Rubber is a polymer derived from

Identify  ₂₀Ca⁴⁰ and ₁₉K⁴⁰

A white powder insoluble in water dissolves a Ammonium hydroxide. It could be

The blue color of water in the sea is due to 

Which one of the following is Explosive ?

Carborundum is 

A: Si       B: SiC         C: SiO₂        D: SiCl₄

pH of blood is

Petroleum mainly contains

The commonly used refrigerant in refrigerator that does not deplete ozone layer among the given ones is 

The formula of Plaster of Paris is 

A: CaSO₄     B: CaSO₄.H₂O     C: CaSO₄.1/2 H₂O       D: CaSO₄.2H₂O

The number of ions produced from one molecule of K₄Fe (CN)₆ in aqueous solution is

Epsom salt is 

A: ZnSO₄.7H₂O    B: MgSO₄.7H₂O       C: FeSO4.7H₂O      D: None of these

In the percentage of oxygen in a metallic oxide is 40 percent, then its equivalent mass

Which of the following contains poly unsaturated fatty acids in largest

In nature Borax occurs as

The formula which is used to calculate the maximum number of electrons in the principle quantum number is

A: n²     B: 2n²      C: 3n      D: 4n

Trimethyl benzene is called

When silver tarnishes in air it turns black. This indicates presence of

Butanedioic acid is

The acid used in car battery is