19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statement (s) is/are correct regarding alkali metal halides? I. They possess high melting point and are crystalline in nature. II. They are prepared by reaction of appropriate oxides with aqueou…
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 metals
Potassium is not prepared by Solvay process because …X… is too soluble to be precipitated by addition of ammonium hydrogen carbonate. Here, X refer to
Ground state valence shell electronic configuration of barium is
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Similarity between lithium and magnesium is particularly stricken and arises because of their
Choose the correct statements (s) regarding lithium and alkali metals I. Lithium is much harder. Its m.p and b.p are higher than other alkali metals. II. Lithium is highly reactive and strongest reducing agent in comp…
Choose the incorrect statement out of the following
…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
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
The oxidation state of K in KO₂ is …A… and the bonding type is …B… Here, A and B refer to
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
Choose the correct statements(s) among the following. I. Alkali metal is highly reactive. II. Alkali metal has lowest ionization enthalpy among their respective period. III. Ionization energy of alkali metals increase…
Alkali metals dissolve in liquid ammonia and produces
Choose the correct option from the codes given below regarding elements and their characteristics colour given in Column I and II of the following table. Column I Column II A. Li 1. Crimson red B. Na 2. Yellow C. K 3.…
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
The alkali metal oxides dissolve in water to produce
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
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
…A… has maximum degree of hydration. Here, A refers to
Which of the following is correctly order regarding hydration enthalpies of alkaline earth metals?
Which of the following is correctly represented according to their existence? I. MgCl₂ .6H₂O II. NaCl. 6H₂O III. KCl. 6H₂O IV. CaCl₂. 6H₂O
Alkaline earth metals are …X… than that of alkali metals. Here, X refer to