Chemistry Quiz

Select the correct order of electronegativity(E.N)

The outer electronic configuration of  K, Cu, and Cr are, respectively.

What is the total number of p electrons in a single phosphorus atom in its ground state?

What is the formula for the basic anhydride of Ba(OH)2?

In which of the following compounds is the size of the cation to anion ratio minimum?

Which is the largest stable atom?

Europium belongs to:

The lanthanide contraction is responsible for the fact that:

Which of the following ion has smallest radius?

Select the correct order of ionic radii

How many unpaired electrons are in a gaseous Fe2+ ion in its ground state?

Ionic radii are

An element of atomic number 29 belongs to

Aluminum is diagonally related to

Which electronic configuration of neutral atom will have the highest first ionization potential?

Ce(58) is a member of

Which of the following is isoelectronic with carbon atom?

Select the correct order of Ionization energy.

Of the element given, which has the lowest ionization energy?

Which orbital fills completely immediately before 4f?

Which of the following has the largest atomic size?

Which of the following has the largest radius?

The outer electronic configuration of most electronegative element is

What type of atoms do carbohydrates contain

The vapour density of a gas is 22. Its molecular weight will be.........

The law of reciprocal proportions can be used to determine.......

The modern atomic weight scale is based on.........

The hydrogen phosphate of certain metals has the formula MHPO4. The formula of metal chloride would be

Bassemerisation is  carried out for

The element which is recovered from the electrolytic process is

Chromium is obtained by reducing concentrated Chromite ore with

The most abundant metal in earth crust is

Chemical leaching is useful in the concentration of

The metal which mainly occurs as oxide ore in nature is

A mineral is usually associated with a large amount of unwanted material called

Which one contains both Calcium and Magnesium

If a metal has low oxygen affinity then purification of metal may be carried out by

The extraction of zinc from zinc blende is achieved by

In the alumino-thermite process, Al acts as

The process of isolation of a metal by dissolving the ore in suitable reagent followed by precipitation of metal by a more electropositive metals is called

Highly electropositive metals can not be  commercially  extracted from carbon reduction process at high temperature because these

The equivalent weight of calcium phosphate Ca3(PO4)2 is (Mol. wt. 310)

Which of the following compounds has a negative enthalpy solution?

Among the sodium halide, NaF has the highest melting point because of

Which of the following is different from the other three oxides?

The ionization energy will be higher when the electron is removed from

Which of the following anion has the smallest radius?

Which of the following metals is the highest electropositive in nature?

Choose the correct statement regarding the transition elements.

Transition metals are not characterized by

The nucleus of an element contains 9 protons. Its valency would be

The number of element present in fifth period is

Quantum yield is related to...........

Stress corrosion, fatigue corrosion, and hydrogen embrittlement fall under the category of which type of corrosion?

When Pt and Zn are electrically connected, which one gets corroded?

The type of corrosion that is very dangerous and difficult to monitor is

During electro galvanizing technique, which metal is used to protect steels against corrosion?

Rust is hydrated

Rusting of Iron is enhanced by