Chemistry Question Bank

Equimolar solution of the following were prepared in water separately. Which one of the solutions will record the highest pH? (AIPMT 2008)

Consider the following abbreviations for hydrated What is the correct order of size of these hydrated alkali ions? n n n x Li H O , y Na H O ,z K H O (J & K CET 2006)

In which of the following the hydration energy is higher than the lattice energy? (CBSE AIPMT 2007)

Alkali metals dissolve in liquid ammonia and produces

The alkali metals from salt-like hydride by the direct synthesis at elevated tempeature. The thermal stability of these hydrides decreases in which of the following orders? …

The solubilities of carbonates decrease down the magnesium group due to a decrease in (RPMT 2008)

Magnesium burns in air to produce MgO and …X… with …Y… flame. Here, X and Y refer to

Which one of the following properties of alkali metals increases in magnitude as the atomic number reises? (AIPMT 1989)

Low solubility of LiF in water is due to …A… Here, A refer to

The correct trend of melting point and boiling point of alkali metal halides

Choose the correct statement/statement out of the following (a) f H always became less negative on moving top to bottom for alkali halides (b) f H always becomes less negative from fluoride to iodide for alkali me…

Beryllium and Magnesium are kinetically inert to oxygen and water because of formation of …X.. on their surface. Here, X refer to

Beryllium and magnesium do not impart any colour to the flame test. The reason is that

Match the Column I and Column II according to element and their characteristics colours, appears in flame test and select the correct option from the codes given below. Column I Column II A. Ca 1. Apples green B. Sr 2…

Melting and boiling point of the alkaline earth metal are …X… than the corresponding alkali metal due to …Y… sizes. Here, X and Y refer to s-BLOCK

Alkali metals are generally silvery white but beryllium and magnesium appears to be

Alkaline earth metals are …X… than that of alkali metals. Here, X refer to

Which of the following is correctly represented according to their existence? I. MgCl2 .6H2O II. NaCl. 6H2O III. KCl. 6H2O IV. CaCl2. 6H2O

Assertion (A): The compounds of alkaline earth metals are more extensively hydrated than those of alkali metal. Reason (R): This is due to low hydration energy of alkaline earth metal as compared to alkali metal.

An element that never has a positive oxidation state in any of its

When copper is treated with a certain concentration of nitric acid, nitric oxide and nitrogen dioxide are liberated in equal volumes according to the equation. o xC u yH NO Cu NO NO NO H O -> The coefficients …

Balance the following equation and choose the correct value of sum of coefficients of the products: CS Cl CCl S Cl ->

In the reaction, ->Br2 + xBrO yCr zH O HCrO H , REDOX REACTIONS the coefficients x, y and z are

For the reaction: NH OCl N H Cl -> in basic medium, the coefficients of NH3,OCl and N2H4 for the balanced equation are respectively

In a balanced equation, H SO xHI H S yI zH O -> the value of x, y and z are