19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
Which of the following metal is used to form useful alloys?
…A…is used in the manufacturing of soft soap. Here, A refer to
…A… is used in devising photoelectric cells. Here, A refer to
Match the Column I and Column II and choose the correct option from the codes give below. Column I Column II A. Potassium 1. Soft soap B. Potassium chloride 2. Fertilizer C. Potassium hydroxide 3. Photoelectric cells …
Anomalous behavior of lithium is due to I. exceptionally small size of its atom II. High polarizing power. III. High Charge Radius ratio. Choose the correct option
Sodium ions found primarily in which part of human body?
Which of the following ion is most abundant within cell fluid?
Which of the following statement (s) is/are correct? I. Sodium and potassium are found on same sides of cell. II. Sodium and potassium are present on opposite side of cell. III. Sodium is found in blood plasma and …
What approximate amount of ATP is used by a resting human in 24 hours?
Beryllium has …A… Property from rest of alkaline earth metals and show diagonal relationship with …B… Here, A and B refer to
Which of the following is not an alkaline earth metal?
Ground state valence shell electronic configuration of barium is
Nature of bonding present in compounds of alkaline earth metals are
The atomic and ionic radii of the alkaline earth metals are …A… than those of the corresponding alkali metals in the corresponding period Here, A refers to
The alkaline earth metals have smaller size than those of corresponding alkali metals, this is due to
Along the group, size and ionization enthalpy of the group II elements(s) … and … respectively.
In which of the following the hydration energy is higher than the lattice energy? (CBSE AIPMT 2007)
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? …
Equimolar solution of the following were prepared in water separately. Which one of the solutions will record the highest pH? (AIPMT 2008)
The correct order of stability for the following superoxides is (EAMCET 2008)
Which of the following on thermal decomposition yields a basic as well as an acidic oxide? (Kerala CEE 2008)
The solubilities of carbonates decrease down the magnesium group due to a decrease in (RPMT 2008)
Which of the following oxides is not expected to react with sodium hydroxide? (CBSE AIPMT 2009)
In the case of alkali metals, the covalent character decreases in the order, (CBSE AIPMT 2009)