List of top Chemistry Questions on Metals and Non-Metals asked in Jharkhand Polytechnic

During alloy formation if one of the metal is Hg (Mercury), then the alloy is called as:

Protecting steel and iron from rusting by coating them with a thin layer of zinc is called:

Four metals A, B, C and D were taken in five different solutions of silver nitrate, zinc sulphate, copper sulphate and iron sulphate and the observations have been listed below:

Reactivity order of metals A, B, C and D is:

Which of the following ore is concentrated by Froth floatation process?

Metal items are tarnished when kept open in air for some time. Silver utensils become blackish, copper utensils become greenish due to corrosion. The gases responsible for this corrosion respectively are:

Some metal oxides react with acid as well as base to produce salt and water, these are known as amphoteric oxides. The examples of amphoteric oxides are:

Aqua regia is a mixture of concentrated HCl and concentrated \(HNO_3\) in the ratio of ____________ respectively.

Gold is used in making ornaments because it is :

An element X reacts with oxygen and forms oxide of X which turns red litmus to blue. The element X is a :

Phosphorus is stored in :

When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The green material is a mixture of: