19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is correct regarding salt of oxo- acids of alkali metals?
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
Lithium being very small in size, which …A… a large CO ion leading to the formation of more stable …B.. and …C.. Here A, B and C refer to
Which of the following ion is most abundant within cell fluid?
The correct order of stability for the following superoxides is (EAMCET 2008)
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
…A… is used in devising photoelectric cells. Here, A refer to
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…
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
Alkali metals dissolve in liquid ammonia and produces
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Which of the following metal salt is mostly hydrated?
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.…
…A… has maximum degree of hydration. Here, A refers 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 readily …X… electron to give monovalent M+ ion. Here, X refer to
The oxidation state of K in KO₂ is …A… and the bonding type is …B… Here, A and B refer to
Similarity between lithium and magnesium is particularly stricken and arises because of their
Choose the incorrect statement out of the following
Which of the following on thermal decomposition yields a basic as well as an acidic oxide? (Kerala CEE 2008)
Which of the following compounds has the lowest melting point? (AIPMT 2011)
In context with beryllium, which one of the following statements is incorrect? (NEET 2016)
Alkali metals show regular trend in their physical and chemical properties with the